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Products => Test Equipment => Topic started by: cncjerry on January 04, 2017, 06:00:01 am

Title: Bunch of keysight U1252B meters around
Post by: cncjerry on January 04, 2017, 06:00:01 am
I noticed recently that there are a number of Keysight U1252B meters coming out of Missouri at what looks like a really good price.  I don't know if they have leads, etc.  When I bought mine it had two sets of leads, two temperature probes w/calibrator, charger etc.  These look like just the meter but it would have to have the charger, I would think.  I'm wondering if this is signaling something?

For the price listed as new on ebay, I'm tempted to pick-up another one.  I love mine. Mine was given to an HP employee, I was told they handed out quite a few of them, as a sales award.

Anyone know if they are being discontinued?
Title: Re: Bunch of keysight U1252B meters around
Post by: PTR_1275 on January 04, 2017, 08:40:41 am
They are listed as brand new so I am assuming they are factory packed. I put a offer in on one, I don't need one but it's a good price and you can't have too many handheld meters can you?
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on January 04, 2017, 04:43:51 pm
It's a hell of a meter for that price.  Mine came with calibration which was extra at the time.  I got one of the sales award packages and I think I paid $250 but the stuff that came with it totaled over $1000 at Zoro Tools.  I then bought the I/R Bluetooth interface and a USB cable.

The only issue with the U1252b is the size.  It is also hard to keep it clean because the external material has a rough feel, I guess for grip, and it collects dirt.  If/when you get your meter you'll want to baby it.
Title: Re: Bunch of keysight U1252B meters around
Post by: mos6502 on January 05, 2017, 01:22:04 pm
So how is it better than Fluke 189 or a Brymen BM869s?
Title: Re: Bunch of keysight U1252B meters around
Post by: saturation on January 05, 2017, 02:19:29 pm
If anyone doesn't have a quality DMM to rival the Fluke 87V this is a steal, while it last.  Keysight meters live up to its spec sheet so what you read is most likely what you will get.


It's a hell of a meter for that price.  Mine came with calibration which was extra at the time.  I got one of the sales award packages and I think I paid $250 but the stuff that came with it totaled over $1000 at Zoro Tools.  I then bought the I/R Bluetooth interface and a USB cable.

The only issue with the U1252b is the size.  It is also hard to keep it clean because the external material has a rough feel, I guess for grip, and it collects dirt.  If/when you get your meter you'll want to baby it.
Title: Re: Bunch of keysight U1252B meters around
Post by: deepskyridge on January 05, 2017, 05:35:11 pm
I just bought one of these on Ebay for $200, pretty cheap for this quality meter.

Thanks for posting this.

Gary
Title: Re: Bunch of keysight U1252B meters around
Post by: PTR_1275 on January 06, 2017, 12:50:26 am
I just accepted the counter offer on one too. $200 plus $45 shipping to aus (works out to about AU$340). Thank you for the heads up, I'll post here when I get it
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on January 06, 2017, 01:12:49 am
I am staring at my own post wondering why I haven't bought another one.  :-//
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 06, 2017, 01:18:29 am
I've bought from that seller before. The meters are new with the standard accessories and warranty.

What's the issue with the size? Too big? I find it's OK; larger than a U1242A, similar in size to my Greenlee (Brymen) DM-820A meter and smaller than a U1282A. The color and texture certainly aren't easy to keep clean, so I mainly use it on my bench.

@cncjerry, sounds like you got quite the uber package via that employee award. :-DMM If you want another, it looks like there are only a couple left.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on January 06, 2017, 05:55:16 am
I am thinking of buying one for my brother... Just kidding, Jim.

Mine came with two sets of leads the second set having all kinds of adapters with large, heavy clamps, pretty useless for electronics work.  They were marked Agilent and I remember the price being like $240 for the set?  I'd have to go back and look.  It had two temp probes plus a temperature probe calibrator/tester that has a slider that allows you to set what should be the temperature and compare against your meter.  I think it is just a variable resistor but I remember it costs like $230 at Zoro.  It also had the extra calibration package which was an option at the time.  There was a free calibration certificate and then this thick package with all the values and test results.  The guy told me they gave them out to the top engineers and sales people at HP.  Funny, the sales guy (like me) didn't know anything about it.  He said, "like the field engineers are going to measure a voltage."  He wanted $250 and I gave him $230 I think.  He even drove it down from Sacramento to Sausalito.  Nice guy.  I kept waiting for him to change his mind while I was drooling.

The only thing I'm not sure of is the reading angle.  My small Fluke, a 117, reads laying flat and I like that for working on open frames.  The Agilent has more of an upright preference, at least mine does.  I really love the two part leads though I know Dave didn't because they were longer. 

As far as calibration goes, it seems to be still pretty close.  This evening I was checking a Kelvin Varley divider for zero and was comparing it to my 3457a.  I would say they were within a uV at zero.  I picked up a Dial-A-Source 46A (love that name) and a Fluke 332D over the weekend.  $75 per so I've been comparing all my meters.  I have Glaucoma and cataracts so I usually need to have a backlight on my meter for contrast.  I found these when I was looking for a u1253b with the OLED display after missing one on craigslist over the weekend.

I hope the start to show up and people report in.

Title: Re: Bunch of keysight U1252B meters around
Post by: EEVblog on January 06, 2017, 06:38:40 am
Anyone know if they are being discontinued?

Likely. They are the old Escort design when Keysight bought Escort, and Keysight have said they want to eventually phase them all out.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 06, 2017, 06:38:18 pm
Looks like he's got a new listing up (or refreshed). Lots of units available. Amazing.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 06, 2017, 06:40:24 pm
Anyone know if they are being discontinued?

Likely. They are the old Escort design when Keysight bought Escort, and Keysight have said they want to eventually phase them all out.

I wonder if there will be a direct replacement. The newer U1280 series is similar, but in a much larger package.
Title: Re: Bunch of keysight U1252B meters around
Post by: noidea on January 08, 2017, 01:23:16 am
Looks like he's got a new listing up (or refreshed). Lots of units available. Amazing.
I wonder where he is getting them from?  In a fit of mee-too-itis I made an offer on the last one of the batch first mentioned. I needn't have rushed now he's selling more!
$200 seems to be the going rate on best offers as that's what I got mine for as well.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on January 08, 2017, 01:41:38 am
He made me an offer to purchase 10 (or more) for a decent price.  After shipping, etc, it would be more hassle.  I would probably break even at 175 a piece plus shipping so now we know the lower limit.  I think he has many, many meters.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 08, 2017, 06:45:39 am
Link? Or name of seller?

Thanks.
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on January 08, 2017, 06:52:38 am
Link? Or name of seller?

Thanks.
Check you PM.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on January 08, 2017, 09:18:07 pm
I noticed recently that there are a number of Keysight U1252B meters coming out of Missouri at what looks like a really good price.  I don't know if they have leads, etc.  When I bought mine it had two sets of leads, two temperature probes w/calibrator, charger etc.  These look like just the meter but it would have to have the charger, I would think.  I'm wondering if this is signaling something?

For the price listed as new on ebay, I'm tempted to pick-up another one.  I love mine. Mine was given to an HP employee, I was told they handed out quite a few of them, as a sales award.

Anyone know if they are being discontinued?
Thanks for the heads-up, I ordered two. (My budget says I'll have to sell one meter, but here in Switzerland I can sell either my used 87V or one of these for more than I paid for it new in USA!)
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 09, 2017, 06:21:44 pm
Anybody use the nominal 9V lithium ion batteries in these meters? The manual seems to indicate you should only use Ni-MH batteries. I know lots of folks use the Lion 9V in their Flukes.

Thoughts?

Edit: I would not use the internal charger with the Lion battery...
Title: Re: Bunch of keysight U1252B meters around
Post by: PedroDaGr8 on January 09, 2017, 07:13:21 pm
I wonder if this is a repeat of the scam that was (and is still) going on with the Harbor Freight Daytona Jacks. They find a popular item, sell it at about 1/2 to 2/3 the going rate, purchase the meters direct from the manufacturer with stolen credit cards. Sometimes you get the meter sometimes you don't, you still get your money back from paypal if you don't. It is a way for them to pull money directly from the stolen cards, so it supports credit card theft. The method is similar, listing a bunch at an already low price and taking even lower offers for it, seller has around 100 reviews. People were getting the HF jacks for $80-90 (store price  is $179 on sale). I am guessing it wasn't JUST limited to jacks but has been going on for a while on eBay. eBay doesn't seem to care.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 09, 2017, 09:53:00 pm
I wonder if this is a repeat of the scam that was (and is still) going on with the Harbor Freight Daytona Jacks. They find a popular item, sell it at about 1/2 to 2/3 the going rate, purchase the meters direct from the manufacturer with stolen credit cards. Sometimes you get the meter sometimes you don't, you still get your money back from paypal if you don't. It is a way for them to pull money directly from the stolen cards, so it supports credit card theft. The method is similar, listing a bunch at an already low price and taking even lower offers for it, seller has around 100 reviews. People were getting the HF jacks for $80-90 (store price  is $179 on sale). I am guessing it wasn't JUST limited to jacks but has been going on for a while on eBay. eBay doesn't seem to care.

It's a five year eBay member with 100% positive feedback on 120 transactions.  So I bet it is legit.
Title: Re: Bunch of keysight U1252B meters around
Post by: PedroDaGr8 on January 09, 2017, 09:58:39 pm
I wonder if this is a repeat of the scam that was (and is still) going on with the Harbor Freight Daytona Jacks. They find a popular item, sell it at about 1/2 to 2/3 the going rate, purchase the meters direct from the manufacturer with stolen credit cards. Sometimes you get the meter sometimes you don't, you still get your money back from paypal if you don't. It is a way for them to pull money directly from the stolen cards, so it supports credit card theft. The method is similar, listing a bunch at an already low price and taking even lower offers for it, seller has around 100 reviews. People were getting the HF jacks for $80-90 (store price  is $179 on sale). I am guessing it wasn't JUST limited to jacks but has been going on for a while on eBay. eBay doesn't seem to care.

It's a five year eBay member with 100% positive feedback on 120 transactions.  So I bet it is legit.
That's what these were too. Mostly accounts from 2008, with limited use. Though later on, new accounts started appearing too. Not saying this is what's happening, just saying keep an eye out for it. If more sellers start appearing at similar,  or lower, prices, then this is more than likely what is going on.

Sent from my LGLS992 using Tapatalk

Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 09, 2017, 10:12:57 pm
44 transactions in the last 6 months.
59 transactions in the last 12 months.

We shall see... mine was marked as shipped today.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 09, 2017, 10:15:12 pm
Anybody use the nominal 9V lithium ion batteries in these meters? The manual seems to indicate you should only use Ni-MH batteries. I know lots of folks use the Lion 9V in their Flukes.

Thoughts?

Edit: I would not use the internal charger with the Lion battery...

I use 8.4V NiMH, so I haven't tried LiIon. The meter supports 7.2V and 8.4V NiMH, but the 8.4V gets up over 10V when full. So, I suppose as long as you charge the LiIon 9V in an appropriate charger, it'll run the meter just fine.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on January 10, 2017, 12:51:51 am
44 transactions in the last 6 months.
59 transactions in the last 12 months.

We shall see... mine was marked as shipped today.
Ditto.
Title: Re: Bunch of keysight U1252B meters around
Post by: ivaylo on January 10, 2017, 02:08:33 am
Beware that that seller (nmori87-us) does not accept returns. I messed up my order, paid, realized I did something I didn't intend to do, asked him to cancel (minutes after I paid, he never shipped anything). He did cancel a couple of days later, but did a partial refund only on the offer amount (minus the $20.65 shipping I also paid). He returned the shipping too, no problem...
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 10, 2017, 03:02:25 am
I use 8.4V NiMH, so I haven't tried LiIon. The meter supports 7.2V and 8.4V NiMH, but the 8.4V gets up over 10V when full. So, I suppose as long as you charge the LiIon 9V in an appropriate charger, it'll run the meter just fine.

Cool. That was my thought. But since I have not played with Lion 9V I just wanted to see if anyone had any good/bad experience with them. Like I said, I have seen YouTube videos where guys use them in Fluke87s with no issue. My Fluke 87 lasts a very long time on a battery, though.

The ability to charge an NiMH battery in the Keysight is pretty slick, especially since most of us have power supplies right on our bench anyway.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 10, 2017, 07:35:52 am
The ability to charge an NiMH battery in the Keysight is pretty slick, especially since most of us have power supplies right on our bench anyway.

And even if you don't have a supply handy, the meter comes with an SMPS one to power the charger in the meter. It's quite nice not having to take the batteries out every time.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on January 11, 2017, 05:44:35 am
The meter charges pretty quickly but, the battery runs out faster than any other meter I own. before purchasing this meter, I doubt I changed batteries once a year; I charge this once a week.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on January 11, 2017, 09:40:12 am
The meter charges pretty quickly but, the battery runs out faster than any other meter I own. before purchasing this meter, I doubt I changed batteries once a year; I charge this once a week.
How much of that can be chalked up to self-discharge in NiMH batteries?

Can the U1525B accept an alkaline 9V battery (obviously without charging it)?
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on January 11, 2017, 09:40:36 am
Can the U1525B accept an alkaline 9V battery (obviously without charging it)?

Yes, as I don't like the NimH cell for those 9V battery, as they're lousy and high self discharge.  :--
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on January 11, 2017, 05:17:52 pm
Cool thanks. Given how little time I actually use a meter, I'll probably end up using primary cells instead of the rechargeable for precisely that reason. (IKEA 9V batteries are very inexpensive, but work great.)
Title: Re: Bunch of keysight U1252B meters around
Post by: mstck on January 11, 2017, 07:36:00 pm
Hi, This looks interesting.  Does the package include the thermocouple? I looked at a manual on-line but I could not determine if they are included or not.

Thanks.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on January 11, 2017, 09:04:12 pm
Hi, This looks interesting.  Does the package include the thermocouple? I looked at a manual on-line but I could not determine if they are included or not.

Thanks.
The manual doesn't include the packing list, but the quick-start guide does. I don't have it in front of me, but I looked at it the other day and I think it's just the meter, a battery, probes (with detachable leads) and the charger. No frills.
Title: Re: Bunch of keysight U1252B meters around
Post by: mstck on January 12, 2017, 12:21:02 am
Thanks Tooki, it is as you said. I found the QSG.

Hi, This looks interesting.  Does the package include the thermocouple? I looked at a manual on-line but I could not determine if they are included or not.

Thanks.
The manual doesn't include the packing list, but the quick-start guide does. I don't have it in front of me, but I looked at it the other day and I think it's just the meter, a battery, probes (with detachable leads) and the charger. No frills.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 12, 2017, 01:29:03 am
Can the U1525B accept an alkaline 9V battery (obviously without charging it)?

Yes, as I don't like the NimH cell for those 9V battery, as they're lousy and high self discharge.  :--

It depends on the battery. The one that came with the meter does OK with holding a charge. I don't use my U1252B for prolonged measurements since I have bench meters for that, so I'm also in the "occasional use" category. The last time I charged the 8.4V battery was October, 2016. The battery level indicator currently shows about 70% charge remaining.

Addendum:

The battery mentioned above is a Powerex Imedion, 8.4V NiMH, 250mAh.

For my transistor tester, I got a Ray-o-vac Recharge Plus 8.4V NiMH, 200mAh. It was last recharged in October as well. Putting it in the U1252B, the battery level indicator shows 75% charge remaining.

Of course, this isn't a true test of the self-discharge rate. Just some anecdotal information.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on January 12, 2017, 01:42:32 am
Cool, thanks bitseeker, in that case the included NiMH will likely do just fine for my needs. (It's not as though it'll be my sole meter. Right now I've got a Keithley 197, a Fluke 87V, and two cheapies.)
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 12, 2017, 01:52:00 am
Yeah, give it a try. At least the meter can use a variety of batteries. So, something's bound to work for you.

Sounds like you're starting a collection already. :-DMM
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on January 12, 2017, 04:35:51 am
Anybody have one show up yet?   I would have expected someone to be reporting in... :-//
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 12, 2017, 01:13:03 pm
USPS shows mine is out for delivery today. We shall see if it is a meter, or a box of rocks!
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 12, 2017, 07:05:42 pm
I've bought from that seller before, so I'd be surprised if it wasn't a meter.

When your meters arrives, be sure to run the battery down approx. 20-30% and verify that the charging circuit brings it back to 100% without overheating. There have been a small quantity of U1250-series meters (both in Agilent and Keysight branding) with bad charge controllers.
Title: Re: Bunch of keysight U1252B meters around
Post by: deepskyridge on January 12, 2017, 09:06:35 pm
Just picked mine up at the Post Office. Brand new meter includes meter, battery, charger, leads and calibration certificate. Will check it against my data precision 8200  for DCV.

Gary
Title: Re: Bunch of keysight U1252B meters around
Post by: msquared on January 12, 2017, 11:46:02 pm
Just got mine from "nmori87-us". Meter was new as described in the listing, everything was in the box. The cal cert had a date of March 2015 so it looks like old stock being sold at a considerable discount. Hard to beat ~50% discount for any new test gear. :)
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on January 13, 2017, 12:17:25 am
Ok, 2 - 0.    :popcorn:

Darn, I keep thinking I need another one incase mine gets dirty.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 13, 2017, 12:20:26 am
Ok, 2 - 0.    :popcorn:

Darn, I keep thinking I need another one incase mine gets dirty.

LOL! I'm sure nmori wouldn't mind. :-DD
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on January 13, 2017, 01:58:03 am
Does it have to be run from battery?
Can it be run just from the wall outlet just like a bench meter?

I have seen some universal ac-dc wall adapters that have 9 volt battery connector.  If I set such adapter to 9 volt dc and hook it up in place of the battery.  Would that work?
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 13, 2017, 03:51:00 am
It doesn't have to be run from a battery. However, using a wall-powered supply in lieu of the battery may result in unexpected issues if the meter ends up no longer floating as a result. If the DC output of the power supply is floating, then it'd probably be fine.

Unless you plan on running the meter for extended periods of time, there's really no need to work around the battery.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on January 13, 2017, 06:25:39 am
The charge plugs are dual socketed and I've been wondering why.  You can plug the leads into it when the charge plugs are in but it doesn't make ensemsince you have to have it in charge to charge.  The other thing I thought strange was the charger is 24v 3.5A.  Seems like overkill for a 9V battery, actually 8.4V rechargeable, right?
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on January 13, 2017, 05:43:20 pm
USPS shows mine is out for delivery today. We shall see if it is a meter, or a box of rocks!
Mine arrived yesterday, at my friend's house in USA. I'll be skyping with him to check the units, but given everyone else's experiences, I doubt there will be any issues.
Title: Re: Bunch of keysight U1252B meters around
Post by: amirm on January 13, 2017, 06:25:57 pm
You guys are terrible with these thread.  I keep buying stuff I don't need because they are discounted!  :D

It says it will be here in 10 days.  Paid $200+shipping.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 13, 2017, 06:39:21 pm
The charge plugs are dual socketed and I've been wondering why.  You can plug the leads into it when the charge plugs are in but it doesn't make ensemsince you have to have it in charge to charge.  The other thing I thought strange was the charger is 24v 3.5A.  Seems like overkill for a 9V battery, actually 8.4V rechargeable, right?

Correct. If you look at the bulge in the middle of the charge cable, you'll notice that it's a section of heat shrink tubing that holds together a plug and jack, probably of the barrel variety. It appears to me that the banana ends are a stock accessory for something and the SMPS is another. Put them together and they work for this use case.

So, perhaps it's simply a matter of utilizing existing parts for cost effectiveness that compensates for the power supply's significantly overrated output.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 13, 2017, 07:38:57 pm
You guys are terrible with these thread.  I keep buying stuff I don't need because they are discounted!  :D

It says it will be here in 10 days.  Paid $200+shipping.

Yeah, I should have spent the $200 on something I don't already have twenty of.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 13, 2017, 10:07:33 pm
You guys are terrible with these thread.  I keep buying stuff I don't need because they are discounted!  :D

It says it will be here in 10 days.  Paid $200+shipping.

Yeah, I should have spent the $200 on something I don't already have twenty of.

Hmm, I still have some room then. I've "stopped" at a baker's dozen.

Yeah, there are many of us who are members of TEA (Test Equipment Anonymous). The forum certainly does feed the habit. :-DD
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 14, 2017, 12:59:23 am
Meter came yesterday, but I was out of town. I am back now, and it is all in perfect order.

Only complaint is that the latch on the continuity tester is pretty slow. Otherwise a pretty nice meter, especially for the price.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 14, 2017, 01:14:48 am
Only complaint is that the latch on the continuity tester is pretty slow. Otherwise a pretty nice meter, especially for the price.

While in the continuity test mode, manually bump it up to one of the M-ohm ranges and it'll be much faster.

Also note that the continuity voltage differs based on the range. It can be as high as 4V, which could be detrimental for some circuits/devices.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 14, 2017, 01:40:40 am
Only complaint is that the latch on the continuity tester is pretty slow. Otherwise a pretty nice meter, especially for the price.

While in the continuity test mode, manually bump it up to one of the M-ohm ranges and it'll be much faster.

Also note that the continuity voltage differs based on the range. It can be as high as 4V, which could be detrimental for some circuits/devices.

Nice trick. Is that note about the speed in the manual? I was reading the manual, but I don't think I got to that part yet. I did see that different ranges use different voltages.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on January 14, 2017, 02:50:11 am
Only complaint is that the latch on the continuity tester is pretty slow. Otherwise a pretty nice meter, especially for the price.

While in the continuity test mode, manually bump it up to one of the M-ohm ranges and it'll be much faster.

Also note that the continuity voltage differs based on the range. It can be as high as 4V, which could be detrimental for some circuits/devices.

Ok, now I don't feel bad about turning you guys onto the seller AND NOT BUYING ONE MYSELF! I never had a problem with the continuity tester as I put it in diode mode usually but I like the idea of bumping it up.  So I gained something.

I have so many meters.  My favorite is an HP handheld still in the original box that the seller taped up and sent to me instead of repacking.  Could have killed him.  I have 4 x 3455A, 3 x 3478a, 2 x 3456a, 2 x 3457a, 2 x 3476b, an HP signature meter to fix them and about 6 or 8 Keithley, plus the Agilent U1252b and a bunch of tossers.  So ok, I need to join the club...

I mean, the meter is nice, do I need another? MAybe to have one on the charger while the other is in use?  OK! I'm going to send him a note and see if he has one without all the charger, leads, etc. that he wants to send me for a deal.

Edit: sent a note, wish me luck.
Title: Re: Bunch of keysight U1252B meters around
Post by: Noize on January 14, 2017, 02:58:25 am
I bought the last one  :phew: Unless he puts up some more. My first professional multi-meter. 8)
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 14, 2017, 03:44:04 am
Only complaint is that the latch on the continuity tester is pretty slow. Otherwise a pretty nice meter, especially for the price.

While in the continuity test mode, manually bump it up to one of the M-ohm ranges and it'll be much faster.

Also note that the continuity voltage differs based on the range. It can be as high as 4V, which could be detrimental for some circuits/devices.

Nice trick. Is that note about the speed in the manual? I was reading the manual, but I don't think I got to that part yet. I did see that different ranges use different voltages.

I don't recall seeing it in the manual. The lag annoyed me so I messed with it for a while and discovered the trick. I assumed that the lag is due to the auto-ranging, but that wouldn't explain why it needs to be in the upper ranges to achieve that speed. Perhaps the lower source voltage in the upper ranges enables the meter to measure low resistance more quickly. I'd be interested to know the real reason.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 14, 2017, 03:53:08 am
Ok, now I don't feel bad about turning you guys onto the seller AND NOT BUYING ONE MYSELF! I never had a problem with the continuity tester as I put it in diode mode usually but I like the idea of bumping it up.  So I gained something.

Sharing is what it's all about. :-+

I never posted much about the U1250 because it seemed like it wasn't of much interest on the forum. Most folks had Fluke 87V or U1272A. It was surprising to see all the activity this thread generated for the meter. Nice to have some company now. :-DMM

Quote
I have so many meters.  My favorite is an HP handheld still in the original box that the seller taped up and sent to me instead of repacking.  Could have killed him.  I have 4 x 3455A, 3 x 3478a, 2 x 3456a, 2 x 3457a, 2 x 3476b, an HP signature meter to fix them and about 6 or 8 Keithley, plus the Agilent U1252b and a bunch of tossers.  So ok, I need to join the club...

Welcome to the club!

Quote
I mean, the meter is nice, do I need another? MAybe to have one on the charger while the other is in use?  OK! I'm going to send him a note and see if he has one without all the charger, leads, etc. that he wants to send me for a deal.

Well done. We didn't even have to try to convince you. :-DD

Quote
Edit: sent a note, wish me luck.

Good luck. From what I've seen, he's selling all new packaged meters. Let us know how you make out.
Title: Re: Bunch of keysight U1252B meters around
Post by: nanofrog on January 14, 2017, 06:03:50 am
Only complaint is that the latch on the continuity tester is pretty slow.
Another trick IME is to use better probes.

For example, continuity is quick on my Probemaster sets, but is slow with the stock leads that cam with it. Even after giving them a good clean with alcohol. Stock leads are fine otherwise, other than them being on the stiff side for silicone insulation.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 14, 2017, 03:13:05 pm
Really? The probes affect the latching speed of the continuity detector? Easy enough to test, but that doesn't seem right. I mean, what is the mechanism by which they make any difference?

I will give it a shot. these probes are OK, but not my favorites. The wires feel plastic, and the metal portion of the probe tips is miniscule. I didn't seem to be able to pull of a "cap" to expose more metal. I only pulled and twisted lightly because I didn't want to damage them.
Title: Re: Bunch of keysight U1252B meters around
Post by: amirm on January 14, 2017, 05:46:23 pm
Really? The probes affect the latching speed of the continuity detector? Easy enough to test, but that doesn't seem right. I mean, what is the mechanism by which they make any difference?
For a long time I had suspected this being a problem.  And member here did a great video showing this:

https://www.youtube.com/watch?v=7YMpoy4Nuqk (https://www.youtube.com/watch?v=7YMpoy4Nuqk)

I think the issue is that a poor probe requires fair amount of pressure to get low resistance whereas a good probe does that with slightest amount of pressure.  Try that.  Short out the probe and see how sensitive it is to amount of pressure you put on them to register low resistance.

Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 14, 2017, 10:09:20 pm
Poor conductivity of probes can certainly degrade continuity detection speed. However, that's a separate issue from the meter being slow when in auto-range or low-range continuity modes.

On the U1250-series continuity is slow. The fastest continuity response is only achieved on the 50 M-Ohm or 500 M-Ohm range, even with gold plated ProbeMaster probes.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on January 14, 2017, 11:14:44 pm
Really? The probes affect the latching speed of the continuity detector? Easy enough to test, but that doesn't seem right. I mean, what is the mechanism by which they make any difference?

I will give it a shot. these probes are OK, but not my favorites. The wires feel plastic, and the metal portion of the probe tips is miniscule. I didn't seem to be able to pull of a "cap" to expose more metal. I only pulled and twisted lightly because I didn't want to damage them.
The included probes are safety probes. (Apparently back in the Agilent days they included both the "short" safety probes and "long" normal ones. Now it's just the short ones.)

As for it affecting continuity, you'd be amazed. On my secondary cheapie meters with unlatched continuity, the included cheapie probes, as well as Fluke TL175 probes, are scratchy and horrible. The gold plated Probemaster probes? Nearly perfect, smooth continuity. If you want I can make a demo video with the cheapie meters, but my Fluke 87V is currently loaned out to a friend so I can't show you the effect in comparison.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 15, 2017, 12:03:38 am
The Fluke TL175s were bad? Uh Oh, those are some of my favorite probes! Mine are never scratchy with the Fluke 87V, of course that meter latches quickly, as does my Keithley 2100. The Fluke 27 is pretty slow.

I just compared the Agilent probes with two other pairs of probes and found no difference in latching speed. Perhaps I need to try these ProbeMaster probes...

My other favorite type of probe are the Elwyn military surplus probes. These are pretty cheap on eBay from the right seller (I got 5 pair for $35 once). They are rubber leads, which are actually AMAZING to hold and use. I know silicone is all the rage, and nice silicone leads are a treat to work with, but good old fashioned rubber is *amazing*, and lasts quite a long time if you keep it lubed with silicone lube every year or so. I have a number of older meters (older bench meters and analog meters) that do not take the modern safety shrouded banana plugs. So the Elwyn leads are also nice for those meters. The bananas are VERY tight.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 15, 2017, 01:11:17 am
I just compared the Agilent probes with two other pairs of probes and found no difference in latching speed. Perhaps I need to try these ProbeMaster probes...

They are nice. Just be aware that they're really sharp, too. I've stabbed myself a couple of times. All of mine have banana plugs with retractable shrouds so they work in both kinds of jacks.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 15, 2017, 02:30:05 am
Yeah, those Elwyn probes are crazy sharp too. I have stabbed myself with them.
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on January 15, 2017, 03:33:05 am
and lasts quite a long time if you keep it lubed with silicone lube every year or so.
Any suggestions for lube?  Sylglide from NAPA?
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 15, 2017, 04:29:11 am
and lasts quite a long time if you keep it lubed with silicone lube every year or so.
Any suggestions for lube?  Sylglide from NAPA?

I use CRC Di-electric grease. I smear it on the rubber and let it sit a day or two. Then I wipe it down with a rag. YMMV
Title: Re: Bunch of keysight U1252B meters around
Post by: SeanB on January 15, 2017, 07:48:13 am
and lasts quite a long time if you keep it lubed with silicone lube every year or so.
Any suggestions for lube?  Sylglide from NAPA?

I use CRC Di-electric grease. I smear it on the rubber and let it sit a day or two. Then I wipe it down with a rag. YMMV

Tyre shine ( the clear one in a bottle) works well. I use some Dash S that I bought in 5l a good few years ago, and it works well on vinyl, vulcanised rubber, silicone and fibreglass. I use it inside the car as well on the interior, but do not use it on vinyl seats if you want to stay in them.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on January 15, 2017, 12:02:05 pm
The Fluke TL175s were bad? Uh Oh, those are some of my favorite probes! Mine are never scratchy with the Fluke 87V, of course that meter latches quickly, as does my Keithley 2100. The Fluke 27 is pretty slow.

I just compared the Agilent probes with two other pairs of probes and found no difference in latching speed. Perhaps I need to try these ProbeMaster probes...
The Fluke leads are great, but the Probemaster ones are just another league altogether. The Fluke 87V masks the scratchiness of whatever leads you use (a testament to the 87V's engineers, if you ask me!). In contrast, a cheapie unlatched continuity tester hides nothing, showing you acoustically the differences in the contact properties of different probes.

What I was able to quantify in brief testing is this: with the Probemaster leads, the resistance when shorting the probes against one another changes very little whether it's a light touch or pressing hard; it's very, very low. With every other lead, the resistance with a light touch is higher than when pressing hard. How big this difference is depends on the leads (the Flukes not as much, cheapie ones and old Oldaker ones, much more so). I think this has not only to do with the material of the plating, but with the surface texture. (The Probemasters are extremely smooth, whereas the others have a bit more texture to them, reducing the contact area with a light touch.)
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 15, 2017, 04:43:28 pm
So how long does the gold plating on the ProbeMasters last? I am fairly gentle with my probes, but they do get rubbed and held against metal all the time.

Also, is it best just to get them factory direct? Or is there some cheaper source? They are not too pricey even from the factory.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 16, 2017, 04:50:08 am
I treat equipment well, so it all tends to last a long time. I don't know how long the plating will last. YMMV. Suffice it to say, the probes aren't priced like they're made of solid gold, so replacing them when the time comes is not painful.

Someone mentioned in one of the threads that Simon might be importing ProbeMaster probes to Europe. As far as I know, they're only sold directly to the public.
Title: Re: Bunch of keysight U1252B meters around
Post by: nanofrog on January 16, 2017, 07:23:29 pm
So how long does the gold plating on the ProbeMasters last? I am fairly gentle with my probes, but they do get rubbed and held against metal all the time.

Also, is it best just to get them factory direct? Or is there some cheaper source? They are not too pricey even from the factory.
FWIW, my oldest set is ~8yrs old, and the plating is still in excellent condition (no signs of peeling or anything).
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on January 17, 2017, 12:49:20 am
So how long does the gold plating on the ProbeMasters last? I am fairly gentle with my probes, but they do get rubbed and held against metal all the time.

Also, is it best just to get them factory direct? Or is there some cheaper source? They are not too pricey even from the factory.
I only just got mine a year ago and I'm not a heavy user, so alas I can't give you any experience on longevity.

I don't think ProbeMaster sells to distributors (at least within USA), they've been catalog direct-sales only as long as I can remember (which goes back to the 1980s).
Title: Re: Bunch of keysight U1252B meters around
Post by: bobaru on January 20, 2017, 05:04:03 pm
Looks like the seller has another batch available again.   Currently listing more than 10 available.   They probably won't last long.   I got one on the first round.    Highly recommended.

-bob
Title: Re: Bunch of keysight U1252B meters around
Post by: amirm on January 20, 2017, 05:20:08 pm
I got mine a couple of days ago.  The meter was in a loose bag which made me a bit suspicious that it was repackaged.  But otherwise, all is well.

It is a nice meter other than the continuity section as reported.  I wanted to test with probemaster probes but they have walked away from bench so could not.  :D

Tested the voltage rage with my reference and it reads a tad low compared to the reference and my Keithly.  I think it was 4.996 instead of 5.001 or something like that.  Better than my Fluke and other meters though.

Didn't know it came with rechargeable 9 volt battery.

The dial is a bit too small but has a very nice feel.

Overall I am pretty happy with it. 
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 20, 2017, 11:14:44 pm
Odd, mine came in the original box with sealed packaging.

Great deal.
Title: Re: Bunch of keysight U1252B meters around
Post by: amirm on January 21, 2017, 12:59:32 am
Sorry was not clear.  Mine came in the original box.  But the meter itself was in a plastic bag that didn't look like factory.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 21, 2017, 02:06:18 am
Ah, mine was in what looked like a factory sealed bag. The accessories and manual were sealed.

Anyway, it works well.
Title: Re: Bunch of keysight U1252B meters around
Post by: ocw on January 23, 2017, 12:30:31 am
Quote
Tested the voltage rage with my reference and it reads a tad low compared to the reference and my Keithly.  I think it was 4.996 instead of 5.001 or something like that.


I purchased one as well.  I was disappointed that the least significant digit, even the two least significant digits at times, would take almost 30 seconds before a voltage reading would finally settle at its most accurate value (those digits would slowly increase).  After that amount of time the reading was within its 0.025% accuracy specification.  1 - 10 volt readings were more likely to be that way.  I compared its reading with a similar reading via my 34401A meter at the same time and the 34401A reading was steady.

I saw a similar drift on the U1252B current readings over an amp.
Title: Re: Bunch of keysight U1252B meters around
Post by: amirm on January 24, 2017, 07:02:36 am
Yeh, I noticed the same thing.  My Keithly is lightning fast and accurate.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 24, 2017, 07:43:51 am
Comparing handheld DMMs to much more capable (and expensive) bench ones isn't going to end well. Use each for its strengths.
Title: Re: Bunch of keysight U1252B meters around
Post by: ocw on January 24, 2017, 04:30:47 pm
Quote
Comparing handheld DMMs to much more capable (and expensive) bench ones isn't going to end well. Use each for its strengths.

If you want to compare apples to apples, my U1252B just took 25 seconds to get a precise reading of 2.4982 volts.  My "economy" Mastech MS8218 took under 3 seconds to settle to 2.4985 volts.  Part of that 3 seconds was probably the stabilization of the source voltage.  I would expect the Keysight meter to come closer to matching the Mastech on reading speed for full resolution.
Title: Re: Bunch of keysight U1252B meters around
Post by: ArcticGeek on January 24, 2017, 04:38:17 pm
Regarding the slow readings, one thing you might want to check is that the Low Pass Filter is turned off in the configuration settings.   I don't recall if the U1252B has the LPF or not, but the U1272A will be slow until you disable the LPF....just a thought.
Title: Re: Bunch of keysight U1252B meters around
Post by: ocw on January 24, 2017, 05:55:52 pm
Quote
Regarding the slow readings, one thing you might want to check is that the Low Pass Filter is turned off in the configuration settings.

Thanks!  I forgot to double check.  While my U1252B was still in its default settings which is supposed to be with the DC filter off, it actually was on.  After turning it off the reading went almost immediately to 2.4986 volts on the U1252B--the reading never made it quite that high with the filter on.  My MS8218 is still looking good with its 2.4985 volt reading.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 24, 2017, 06:51:23 pm
If I recall correctly, Keysight changed the firmware of many of their DMMs to have the LPF on by default. They used to be off by default.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 25, 2017, 08:13:01 am
So I was at my local electronics store and noticed they had the ProbeMaster probes. So I grabbed a set (like $1 more than online, but I support my guy).

They are very nice probes. I already stabbed myself! Ouch!

There was no effect on the speed of the continuity tester on the U1252B. It is still only fast on the 51Meg or 510Meg scale.

But the probes are very nice, and feel great in the hands. It is a toss up between the Fluke Twist ones, the Probemater, and the surplus Elwyn probes. They all have their strengths and weaknesses.
Title: Re: Bunch of keysight U1252B meters around
Post by: eeviking on January 25, 2017, 06:52:42 pm
If I recall correctly, Keysight changed the firmware of many of their DMMs to have the LPF on by default. They used to be off by default.

From the U1252B user guide:
Filter defaults
Firmware version Default setting
2.17 and below oFF
2.18 and above oN

Still waiting for the one I ordered, should be here tomorrow  :)
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 25, 2017, 10:51:39 pm
So I was at my local electronics store and noticed they had the ProbeMaster probes. So I grabbed a set (like $1 more than online, but I support my guy).

They are very nice probes. I already stabbed myself! Ouch!

LOL! Welcome to the club. You're now official.
Title: Re: Bunch of keysight U1252B meters around
Post by: iainwhite on January 25, 2017, 11:20:03 pm
thanks to this thread, I now have a U1252B and set of Probemasters -  maybe i'm getting ready for T.E.A. membership?
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 26, 2017, 02:55:09 am
thanks to this thread, I now have a U1252B and set of Probemasters -  maybe i'm getting ready for T.E.A. membership?

No worries. You've got a few DMMs to go, yet. But you can still stop by and say, "hi". We're a friendly lot.
Title: Re: Bunch of keysight U1252B meters around
Post by: mrrrwhat on January 28, 2017, 10:12:20 am
Do anybody know how to upgrade U1252B firmware?
I can't find any information form official website
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 28, 2017, 11:19:15 pm
If I remember correctly, only the U1253B firmware can be field updated by using the USB-to-IR cable. U1251B and U1252B have to be updated by Keysight.

Of course, if there is a DIY way to do it, I'd be interested as well.
Title: Re: Bunch of keysight U1252B meters around
Post by: nanofrog on January 29, 2017, 12:07:44 am
If I remember correctly, only the U1253B firmware can be field updated by using the USB-to-IR cable. U1251B and U1252B have to be updated by Keysight.
IIRC, the U1252B can be upgraded the same way (via USB - IR).

Unlike the U1253B however, they've not released any firmware updates for the U1252B (just checked to be sure). They have updated the logging software.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on January 29, 2017, 12:10:19 am
Did you have an issue with the existing firmware?
Title: Re: Bunch of keysight U1252B meters around
Post by: nanofrog on January 29, 2017, 12:33:24 am
Did you have an issue with the existing firmware?
No, not at all.  ;D
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on January 29, 2017, 12:36:18 am
I didn't, either. However, there are various things I'd enhance about the meter, which may or may not be firmware related. :-DMM
Title: Re: Bunch of keysight U1252B meters around
Post by: iainwhite on January 29, 2017, 01:54:41 am
Looks like the latest firmware is more than a year old:

Version:    3.1.51130.01
Release Date:    2015-12-03

according to the 1253B tech support page  Here  (http://www.keysight.com/main/techSupport.jspx?cc=US&lc=eng&nid=-33167.920237&pid=1765026&pageMode=OV)
Title: Re: Bunch of keysight U1252B meters around
Post by: nanofrog on January 29, 2017, 01:58:15 am
Looks like the latest firmware is more than a year old:

Version:    3.1.51130.01
Release Date:    2015-12-03

according to the 1253B tech support page  Here  (http://www.keysight.com/main/techSupport.jspx?cc=US&lc=eng&nid=-33167.920237&pid=1765026&pageMode=OV)
That revision number is for the logging software if you look closer.  ;)
Title: Re: Bunch of keysight U1252B meters around
Post by: iainwhite on January 29, 2017, 02:09:03 am
oops, my bad
Title: Re: Bunch of keysight U1252B meters around
Post by: TimFox on January 31, 2017, 07:31:43 pm
Regarding the slow readings, one thing you might want to check is that the Low Pass Filter is turned off in the configuration settings.   I don't recall if the U1252B has the LPF or not, but the U1272A will be slow until you disable the LPF....just a thought.
I did not receive a full manual, only the quick-start guide with my U1252B.  The unit seems to work fine, but I don't know how to enable/disable the LPF--please advise.
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on January 31, 2017, 07:52:23 pm
http://cp.literature.agilent.com/litweb/pdf/U1251-90036.pdf (http://cp.literature.agilent.com/litweb/pdf/U1251-90036.pdf)
Title: Re: Bunch of keysight U1252B meters around
Post by: TimFox on February 01, 2017, 02:19:40 pm
Thanks.
Title: Re: Bunch of keysight U1252B meters around
Post by: mrrrwhat on February 01, 2017, 05:59:16 pm
I have got one from "nmori87-us".The cal cert had a date of october 2012 :(
The meter measure DCV,ACV and resistance have last digi "floating"
(the last digi go up and down quickly)
Is that normal or the meter have problem?
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 07, 2017, 07:18:04 am
Bought one of these meters as a stop gap until I spring for a bench DMM. Not a bad meter for $200 but looking at the internals I can't see why people paid $500+ for these things. IMO Fluke build quality trumps these things outright. I know the specs on the U1252B marginally beat the 87-V but I have an original 87 series 1 that is 31 years old and works perfectly, even the display. Don't think this Agilent will get there but for $200 not bad.
Title: Re: Bunch of keysight U1252B meters around
Post by: darkstar49 on February 07, 2017, 10:49:47 am

You've more luck than I did... within 6 years, one dead 189, and one dead 289 2 weeks ago...

I'm also waiting for one of these 1252B that I bought last week... can't be worse than what I experienced with Fluke...
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on February 07, 2017, 04:10:20 pm
As the owner of this thread I hereby declare that there will not be a Fluke v. Agilent discussion on this thread as Agilent wins hands down.  Just look at the color.

The guy selling them is pressing me to buy 10 so he still has quite a few.  Anyone looking for a meter in the 200$ class needs to look no further.
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 07, 2017, 06:13:31 pm

You've more luck than I did... within 6 years, one dead 189, and one dead 289 2 weeks ago...

I'm also waiting for one of these 1252B that I bought last week... can't be worse than what I experienced with Fluke...

I'm not sure the 180 or 280 series from Fluke are all that hot. I come from the 077,079, 087 179 meters with some gen 1 100 series I keep in my vehicles. Admittedly Fluke as not really impressed me with anything above an 87-V. I have a 179 but still prefer the 079 form factor which is purely subjective. I will say my meters don't get stress tested as I don't use them to make a living but having meters that are decades old and still working does mean something.
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 07, 2017, 06:18:54 pm
As the owner of this thread I hereby declare that there will not be a Fluke v. Agilent discussion on this thread as Agilent wins hands down.  Just look at the color.

Too funny...

The guy selling them is pressing me to buy 10 so he still has quite a few.  Anyone looking for a meter in the 200$ class needs to look no further.

Don't tell me that, I am trying to talk myself out of buying another one. I don't need it....  Did anyone get to the how/why these are selling at this price? They don't seem to be discontinued from what I can see.
Title: Re: Bunch of keysight U1252B meters around
Post by: bobaru on February 07, 2017, 11:48:33 pm
Just a guess on my part, but maybe they were closed out because it was cheaper to dump them on the market with an out of date calibration certificate than it would be to "refurbish" them and run them through another calibration.

-bob
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on February 08, 2017, 12:00:44 am
I have been thinking...  I want to buy two.  I am not going to buy ten.

Can we organize some kind of group buy.  Groups based on region.  I am in NE Indiana.  Is there enough people here from my area who want one (or more) and want the price break, that buying ten, will bring?

My region is something like:
Huntington
Fort Wayne
Auburn
Columbia City

Is there enough interested people?
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 08, 2017, 03:56:05 am
I have been thinking...  I want to buy two.  I am not going to buy ten.

Can we organize some kind of group buy.  Groups based on region.  I am in NE Indiana.  Is there enough people here from my area who want one (or more) and want the price break, that buying ten, will bring?

My region is something like:
Huntington
Fort Wayne
Auburn
Columbia City

Is there enough interested people?

Well, I just bought the last one in the current auction. A group buy would have been a nice option. It would be interesting to see if the seller has more to offer though I won't be buying any more.
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 08, 2017, 04:05:11 am
Just a guess on my part, but maybe they were closed out because it was cheaper to dump them on the market with an out of date calibration certificate than it would be to "refurbish" them and run them through another calibration.

-bob

Good point. My meter is dated 2013. Didn't bother to open the cal cert. .....Wow, as I write this it looks like a new batch is already up for auction. Got to wonder how many he has.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on February 08, 2017, 04:17:53 pm
For the record, my cal cert was dated late 2015. I got one of the first batch.

It is a good meter. I prefer the UI over my Fluke 87V. I doubt it is as rugged, though. One of the best parts being that the current reading does not default to AC like the stupid Fluke does.

I think I need to lengthen the auto-turn off time. I lengthened the auto dim of the back light to 90 sec, which is pretty good. I wish you could tell it not to increase the auto off time if the value being measured varied by more than 10%. I find it will shut off right when I am taking a reading.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on February 08, 2017, 06:32:35 pm
Since it's easy to recharge the battery via the DMM, I just turned off both auto-off timers.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on February 08, 2017, 08:35:29 pm
Since it's easy to recharge the battery via the DMM, I just turned off both auto-off timers.

I was tempted to turn them off too, but I know I have left meters on, like my bench meters, or my Fluke 27 (which you can almost just leave on, as the battery lasts forever). Since I only have one battery for it that would mean I could not use it (and can't be good for the battery). Of course I have over 25 OTHER meters I could use... but they are not orange!
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on February 08, 2017, 08:51:05 pm
NiMH batteries do not mind being deep discharged. (It's lead-acid and Li-ion batteries that don't tolerate deep discharging.)
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on February 08, 2017, 09:00:08 pm
The ability to lengthen the auto-off to up to 90 minutes is very nice, though honestly setting it to 30 minutes (like the Fluke 87V) is more than adequate for me most of the time.   Unless I was data logging, I can't think of a reason I would want to turn it off completely.  If I did I'd be doing a lot of charging or battery changes... ::)  But that's just me.

FWIW - my cal certificate is dated June 2013
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on February 08, 2017, 09:11:49 pm
NiMH batteries do not mind being deep discharged. (It's lead-acid and Li-ion batteries that don't tolerate deep discharging.)

NiMH may be more tolerant of deep discharging, but they still only have a finite number of cycles. If I was running them dead every few days they won't last very long.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on February 08, 2017, 09:49:46 pm
Of course I have over 25 OTHER meters I could use... but they are not orange!

Ah, yes. TEA has its downsides. :-DD
Title: Re: Bunch of keysight U1252B meters around
Post by: Luap2 on February 09, 2017, 04:07:46 am
I pulled the seller up and got one for my self.  Thanks to org poster for bringing it up here.  Shows he still had 6.                            Now I just have to wait for the post man
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on February 09, 2017, 05:10:24 am
He pinged me again yesterday asking if I want 10, so he has more. 

The meter turns off all the time on me.  I really don't like that feature as the other poster mentioned it is easy to charge.

I wish they made one the size of the Fluke 115 with all the features of the 1252.  I like the size and weight of the 115 as the 1252 is pretty big when space is at a premium.  I'll bet a lot of you guys were surprised at the size if you had never seen one in the flesh before.
Title: Re: Bunch of keysight U1252B meters around
Post by: noidea on February 09, 2017, 05:53:10 am
Size is a relative thing, in a fit of madness I bought one of these just after I had ordered BM257s off Franky to replace an old Fluke 12 that got dropped one to many times :( RIP.  whilst the 257s is shorter I actually find it bulkier as it's a lot thicker with the holster on it. So for something that gets slipped into a laptop satchel pretty often I seem to be using it more than the 257s.
Did anyone else get a set of stick on skins with theit metet? I dare you to post a pic of your meter in use in public if you did! I have a 1 year old daughter who has decided my multimeters are great toys as there's lots of buttons to press that go Beep, I don't think she would leave it alone if I stuck the ladybird one on.
Title: Re: Bunch of keysight U1252B meters around
Post by: EEVblog on February 09, 2017, 06:07:52 am
I was going to suggest people could possibly buy these at bulk discount and resell them for a profit. The original boxes really help a lot in re-sale. Are they essentially new old stock?
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on February 09, 2017, 06:44:47 am
I like the size. Bigger that my Brymen 257 (except thickness) but smaller than my Fluke 87V and much smaller than my Fluke 27.

For a bench meter I'm liking the lack of rubber bumper guard. The case has that grippy orange rubberized plastic in just the right places to keep if from slipping out of your hands or off the bench.  I give it a big  :-+ for ergonomics.

I would not take it outdoors or up on a roof for solar panel work. The Fluke's are for that.

The sticker "skins" came with mine but none of them really do it for me.

Are they essentially new old stock?

Yes, I think so. At least that's what mine looks like.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on February 09, 2017, 08:41:32 am
Did anyone else get a set of stick on skins with theit metet? I dare you to post a pic of your meter in use in public if you did! I have a 1 year old daughter who has decided my multimeters are great toys as there's lots of buttons to press that go Beep, I don't think she would leave it alone if I stuck the ladybird one on.

Yep! Weird skins... Ladybug on a meter? Maybe the 'Merican flag one, but still... pretty weird.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on February 09, 2017, 08:44:57 am
I was going to suggest people could possibly buy these at bulk discount and resell them for a profit. The original boxes really help a lot in re-sale. Are they essentially new old stock?

Yes, NOS. Mine was from late 2015. Others are from 2013.

I think you would have to buy a bunch of them to get much of a discount, though. I got mine from right around $200 with Make Offer; that was for one. Anyone getting a significantly better offer for a lot of them?
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on February 09, 2017, 10:13:30 am
Just a note for new U1252B owners, watch out for the DC jack to banana connectors, from the AC/DC adaptor that is shrink wrapped, its cheap stuff and mine is rusted inside at the soldering points.  :--

Better cut/peel off the shrink wrap and inspect yours.
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on February 09, 2017, 11:24:32 am
I was going to suggest people could possibly buy these at bulk discount and resell them for a profit. The original boxes really help a lot in re-sale. Are they essentially new old stock?
With a deep enough discount that might be OK but the numbers aren't that great if you have to pay import to get them to the UK or (maybe) Aus

He's selling at $225 at present for one. Let's say he accepts $200 - with postage and import duties (added by ebay so I assume he's using the Global Shipping Programme) and the poor UKP exchange rates that will be about £240.

You can buy one new, with warranty, from RS or Farnell for £476.40 which limits your ebay resale price - lets say you can make £380 so that's £140 "profit" - less about £60 ebay+paypal fees, less a tenner to post it out so maybe £70 gross. You have to take the hit on any returns at that and if it were me the Government would want £28 in income tax (yes, I do declare my ebay sales).

Oh, and you need to either buy up the whole stock or wait until he has sold all of his because if you look at recently completed sales it's clear non-one else is managing to sell any U1252B's on ebay at the moment.

I'm not saying I wouldn't do it but I'd need to be thinking of at least 30-40 units for it to be worthwhile.
Title: Re: Bunch of keysight U1252B meters around
Post by: EEVblog on February 09, 2017, 11:31:02 am
Yes, NOS. Mine was from late 2015. Others are from 2013.

I think you would have to buy a bunch of them to get much of a discount, though. I got mine from right around $200 with Make Offer; that was for one. Anyone getting a significantly better offer for a lot of them?

If someone bought all this guys stock and they suddenly vanished at that price I recon you could resell them for $300+ with a decent ad and photos spruiking them.
Title: Re: Bunch of keysight U1252B meters around
Post by: EEVblog on February 09, 2017, 11:34:15 am
I'm not saying I wouldn't do it but I'd need to be thinking of at least 30-40 units for it to be worthwhile.

I was talking about US people mostly. Overseas adds too much extra expense.
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on February 09, 2017, 11:40:03 am
I'm not saying I wouldn't do it but I'd need to be thinking of at least 30-40 units for it to be worthwhile.

I was talking about US people mostly. Overseas adds too much extra expense.
Yeah, the numbers would stack up better in the 'States but selling at $300 you'd still hand about $45 to ebay and paypal plus your own shipping on top of that so I'd want to be a fair bit less than $200 on the purchase price.

It really makes me wonder what he paid for them, given that it appears to be worth it for him to sell at $225.
Title: Re: Bunch of keysight U1252B meters around
Post by: EEVblog on February 09, 2017, 11:53:51 am
It really makes me wonder what he paid for them, given that it appears to be worth it for him to sell at $225.

Reminds me of the 50+ Fluke meters I bought from RS Components and resold on ebay for 5 times what I payed for them  ;D
Someone at RS goofed the website price and I ordered a bulk lot before they figured it out. I actually ordered more but they cancelled the 2nd order.
Title: Re: Bunch of keysight U1252B meters around
Post by: Kennylxix on February 09, 2017, 12:36:31 pm
Well I just lowered his supply by one :)
Title: Re: Bunch of keysight U1252B meters around
Post by: noidea on February 09, 2017, 01:17:02 pm
I would not take it outdoors or up on a roof for solar panel work. The Fluke's are for that.

Why not? I was troubleshooting a large 3 phase inverter driven air conditioning unit with mine the other day. I must say I am liking the dual display it's the first meter I've owned with it and it is quite handy.
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on February 09, 2017, 01:28:28 pm
Well I just lowered his supply by one :)
Likewise but I'm going to stick at one.

I hope that you made an offer - I tried $185 which was halfway between $200 which he accepts routinely and $170 which was the highest that I could find that he has previously declined but no luck. I went with his $200 counteroffer.

The justification for another meter is marginal TBH but the price is too good to pass.
Title: Re: Bunch of keysight U1252B meters around
Post by: natman69 on February 09, 2017, 02:27:41 pm
Please, can someone confirm that the battery charger can be used in Europe (230V, 50Hz)?

Thank you
Title: Re: Bunch of keysight U1252B meters around
Post by: mrrrwhat on February 09, 2017, 03:15:41 pm
Please, can someone confirm that the battery charger can be used in Europe (230V, 50Hz)?

Thank you

Yes, the changer is 100v to 240v
Title: Re: Bunch of keysight U1252B meters around
Post by: noidea on February 09, 2017, 03:19:25 pm
Please, can someone confirm that the battery charger can be used in Europe (230V, 50Hz)?

Hi Natman
I'm using one in Australia (240V, 50Hz) no problems the charger has an IEC socket in it so you just need a local power cord, failing that you can just stick a 9V dry cell battery in it  :)
Title: Re: Bunch of keysight U1252B meters around
Post by: eeviking on February 09, 2017, 04:48:53 pm
Mine had a cal. date of 31-mar-2015. I got it for 200$
Don't like the probes, they look cheap and are not very sharp, prefer the ones from my U1231A
Anyone know if they plan to make a new U1252C model ?
Title: Re: Bunch of keysight U1252B meters around
Post by: Kennylxix on February 09, 2017, 05:19:42 pm
Same  $200
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on February 09, 2017, 11:14:55 pm
I would not take it outdoors or up on a roof for solar panel work. The Fluke's are for that.

Why not? I was troubleshooting a large 3 phase inverter driven air conditioning unit with mine the other day. I must say I am liking the dual display it's the first meter I've owned with it and it is quite handy.

You're right of course - it will work just fine outdoors. It's just that it does not seem to me that it would hold up to the same kind of physical abuse as my Flukes.  The face and dial have no protection from the abuse my clumsy hands are capable of dishing out. It's too precious to risk breaking it or scratching up - especially when it's high resolution is unneeded for my outside uses.    On the other hand, I'm confident my Fluke 27 could be dropped from my roof or be lost in a snow bank until spring and still work like new.
Title: Re: Bunch of keysight U1252B meters around
Post by: EEVblog on February 09, 2017, 11:59:13 pm
Anyone know if they plan to make a new U1252C model ?

That entire line of meters was designed by Escort. Agilent/Keysight bought out Escort and have been slowly discontinuing all their products.
Almost certain they won't release a follow-up based on that design.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on February 10, 2017, 03:28:07 am
I was going to suggest people could possibly buy these at bulk discount and resell them for a profit. The original boxes really help a lot in re-sale. Are they essentially new old stock?

I'll share.  He wants $150 for 10 plus $50 shipping.  I can't see how to make a profit on that number.  If one fails you would lose, unless you negotiated rights of return on the failed units. I was thinking buy ten sell nine. I would do it if I had 9 friends (that need a meter, I'm not that lonely but I don't use facebook).  So I would think he got them for less than $100.  Also, I would bet he bought out someone's inventory opposed to direct from Keysight.
Title: Re: Bunch of keysight U1252B meters around
Post by: bobaru on February 10, 2017, 05:13:53 am
That number would work if you could hold out until the original seller ran out of inventory.    No telling how long that might be though.    Everyone else is selling new units for close to 400.

-bob

 
Title: Re: Bunch of keysight U1252B meters around
Post by: eeviking on February 10, 2017, 04:04:36 pm
Anyone know if they plan to make a new U1252C model ?

That entire line of meters was designed by Escort. Agilent/Keysight bought out Escort and have been slowly discontinuing all their products.
Almost certain they won't release a follow-up based on that design.

I know, but I was thinking of a new design as they did with the U1242.
Would like to see a U1252C in the same form factor as the U1242C. The U1280 style is way to big and bulky.
Btw. is the switch on the U1242C as crappy as on the U1280 series?
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 10, 2017, 05:01:55 pm
Not to change the subject but after having purchased two of these meters it just reaffirms in my mind how far off track HP/Agilent/Keysight have strayed. Other than some performance specifications I don't see how Keysight thinks this meter competes with the 87-V, its obvious rival. Depending on where you quire it (outside of eBay obviously) they are $30-$100 more expensive than the 87-V. I my mind the U1252B falls short on build quality, battery life, orange color scheme (subjective), including stickers, sorry "skins" with a professional piece of test equipment (also subjective). Who are they targeting this thing at? Then there is the intended Keysight soft case, U1174A. The meter barley fits in this thing. Now I understand Fluke is exclusively a meter company where Keysight makes damn near everything test. I also think is is possible Keysight may not necessarily want to supplant Fluke but wants to have product in the space. That would make sense until you consider how you position your product in terms of price. If you are more expensive then the established brand you better be better in nearly every respect, or at least comparable. If not you end up sitting on a lot of product and short selling on eBay.

Now before everyone jumps down my throat I did buy two of these meters. At $200 each you honestly can't beat them but when I was seriously looking to replace my 30+ year old 87 I looked at the 87-V, U1252B and U1253B. I didn't pull the trigger on any of them due to cost but I did walk away thinking these Agilent(at the time) meters did not compare with the Fluke. When all of these meters are $450+ the equation is very different.
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on February 10, 2017, 07:47:43 pm
I agree that $450 is too much for one of these. But I also think it is too much for the Fluke 87V  ( I paid $200 for mine in a NOS eBay deal).

I have both and comparing the two - they just seem like very different beasts.

While the Fluke 87V is a great electronics bench meter is is also a larger,  time tested, very rugged meter that can stand up to a lot of physical abuse and keep going -  meaning it is at home away from the bench as well.

I'm loving my new Agilent U1252b.  The extra resolution and other features missing on the Fluke means it is even more useful as an electronics bench meter IMHO.  Battery life is shorter but the recharge option is nice.  Subjectively, the backlight is nicer and I like the orange color.  The smaller form factor feels less clunky in my hand and on the bench , but it also seems more fragile to me. 

I'm sure my Fluke 87 will still be used and accurate in 30 years. I'm not so sure that will be the case with the Agilent.

Just different meters - each fill an niche for me.
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on February 10, 2017, 07:57:15 pm
Also beware of the printed label, these Agilent's Escort models are susceptible of chipping/fading.

My Fluke dmms that are older and even experienced harsher treatment don't have this problem.

I own U1242B and U1252B as these have identical case molding types and label printing.

This is what happened to mine, never used in harsh place nor sweaty fingers.

(https://www.eevblog.com/forum/testgear/(rant)-keysightagilent-uses-cheap-paint-for-label/?action=dlattach;attach=168660;image)
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on February 10, 2017, 08:47:02 pm
Also beware of the printed label, these Agilent's Escort models are susceptible of chipping/fading.

I guess that's what the extra skins are for!
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on February 10, 2017, 09:18:33 pm
Having used the Fluke 87V for years I gotta say I much prefer this Keysight. Sure, the Fluke is more rugged to put in a toolbox, but for electronics use the dual display of the Keysight (which can read AC and DC at the same time to handle biases AC signals), the far superior backlight, superior screen in general, the adjustable backlight and meter timeout turnoff settings, and the current mode that doesn't default to AC like the Fluke make the Keysight a clear winner for non-industrial use.

I mean how many times have you wondered what the bad reading was on the 87 when in current mode only to realize you were in AC current?

How many times have you had to turn the backlight back on on the Fluke?


The orange is a lot nicer than the yellow too.

I do agree both are overpriced.
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 10, 2017, 10:32:25 pm
Also beware of the printed label, these Agilent's Escort models are susceptible of chipping/fading.

I guess that's what the extra skins are for!

So if you apply a skin you can never peal it off!!!!  :-DD
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 12, 2017, 02:07:52 am
I just boughtone for $202 plus shipping which was my 3rd offer.  Seems reasonable for a meter that's going for $575 on Amazon.  I have a nice Fluke 177 but I think this is better for electronic workbench work, especially the dual meter functionality - thanks for the heads up guys.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on February 12, 2017, 09:54:06 am
Not to change the subject but after having purchased two of these meters it just reaffirms in my mind how far off track HP/Agilent/Keysight have strayed. Other than some performance specifications I don't see how Keysight thinks this meter competes with the 87-V, its obvious rival. Depending on where you quire it (outside of eBay obviously) they are $30-$100 more expensive than the 87-V. I my mind the U1252B falls short on build quality, battery life, orange color scheme (subjective), including stickers, sorry "skins" with a professional piece of[…]
Ummm… you do realize this meter is from the product line Keysight is killing off? As others have said, this model is one of the old designs from Escort, which Agilent-at-the-time purchased. One by one they've been replacing the Escort models with "native" Keysight designs, which by all accounts are much superior. So I think your choice of words, "strayed" is kind of off-base.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 12, 2017, 10:55:26 am
Wow! It may be last year's model but, having just read through the spec sheet, I am definitely NOT having buyers remorse  :D
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on February 12, 2017, 06:39:53 pm
Wow! It may be last year's model but, having just read through the spec sheet, I am definitely NOT having buyers remorse  :D

I think you'll be very happy with it.  The accuracy of mine surpasses the already impressive specs. 

After using it for several days now, I had reason to use both is and my Fluke 87V simultaneously on a project and I couldn't believe how much nicer the screen/backlight is on it. The extra resolution and dual display also came in handy and meant I didn't need to fire up one of my bench meters.

I'm liking it more an more every day.  No question it's a bargain for $200.
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 13, 2017, 03:55:45 am
Ummm… you do realize this meter is from the product line Keysight is killing off? As others have said, this model is one of the old designs from Escort, which Agilent-at-the-time purchased. One by one they've been replacing the Escort models with "native" Keysight designs, which by all accounts are much superior. So I think your choice of words, "strayed" is kind of off-base.

I've seen the "new" ones at Fry's. My comments stand.  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: electrolust on February 13, 2017, 07:42:36 am
I just boughtone for $202 plus shipping which was my 3rd offer.  Seems reasonable for a meter that's going for $575 on Amazon.  I have a nice Fluke 177 but I think this is better for electronic workbench work, especially the dual meter functionality - thanks for the heads up guys.

Not really fair to pick the highest price as a comparison.  Keysight themselves sells it for $426 shipped, on ebay.  Apparently MSRP is $485?  I wonder how folks can sell it for higher than MSRP esp. on Amazon.

Anyway, a bargain regardless.  I snagged one @ $200.  I think I'm now officially out of the novice league now that I own too many DMMs.  :-DMM
Title: Re: Bunch of keysight U1252B meters around
Post by: natman69 on February 13, 2017, 09:18:16 am
After reading this thread, I've a Keysight U1252B on my way... :popcorn:

I've noticed that in EU the ir to usb data cable is about 50 euro.

It's time to do a diy cable!  ;)

Title: Re: Bunch of keysight U1252B meters around
Post by: Kennylxix on February 13, 2017, 10:22:53 am
I just boughtone for $202 plus shipping which was my 3rd offer.  Seems reasonable for a meter that's going for $575 on Amazon.  I have a nice Fluke 177 but I think this is better for electronic workbench work, especially the dual meter functionality - thanks for the heads up guys.


Anyway, a bargain regardless.  I snagged one @ $200.  I think I'm now officially out of the novice league now that I own too many DMMs.  :-DMM

I'm not sure what you mean.   I wasn't aware it was possible to have too many dmms :)
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 13, 2017, 10:51:32 am
After reading this thread, I've a Keysight U1252B on my way... :popcorn:

I've noticed that in EU the ir to usb data cable is about 50 euro.

It's time to do a diy cable!  ;)
Glad to hear you snagged one :D  I was thinking the same about a DIY cable but Allied only wants $32 (plus tax and shipping no doubt) here in the US for a U1173B. Even if this is as simple as taking an FT232R based USB-serial board like the one from Sparkfun and adding IR TX/RX diodes, it hardly seems worth the trouble for that kind of money.
Title: Re: Bunch of keysight U1252B meters around
Post by: natman69 on February 13, 2017, 11:07:17 am
After reading this thread, I've a Keysight U1252B on my way... :popcorn:

I've noticed that in EU the ir to usb data cable is about 50 euro.

It's time to do a diy cable!  ;)
Glad to hear you snagged one :D  I was thinking the same about a DIY cable but Allied only wants $32 (plus tax and shipping no doubt) here in the US for a U1173B. Even if this is as simple as taking an FT232R based USB-serial board like the one from Sparkfun and adding IR TX/RX diodes, it hardly seems worth the trouble for that kind of money.

Probably, you're right! I've noticed that RS sells it at 37 euro + tax and shipping.  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 13, 2017, 11:34:27 am
There's also the wireless U1117A IR-to-Bluetooth Adapter that goes for around $99.  Be careful if you choose this route as the U1177A (all orange) is very similar, only about $50, but only works with Android (not iPhone) and PC but, by some reports, the U1177A is buggy.  If I were going this route, I would look for the newer U1117A (orange and black).
Title: Re: Bunch of keysight U1252B meters around
Post by: natman69 on February 13, 2017, 04:05:13 pm
There's also the wireless U1117A IR-to-Bluetooth Adapter that goes for around $99.  Be careful if you choose this route as the U1177A (all orange) is very similar, only about $50, but only works with Android (not iPhone) and PC but, by some reports, the U1177A is buggy.  If I were going this route, I would look for the newer U1117A (orange and black).

Thank you for your suggestions!
Title: Re: Bunch of keysight U1252B meters around
Post by: scopeman on February 14, 2017, 02:30:02 am
Just bought one at a 200.00 make offer. As if I need another multimeter.

However I have a couple of HP branded DMM's (E2373 (Gray) and a 971A (Yellow)) I bought at a hamfest probably close to 20 years ago (I think they are the ones that Fluke sued them over, similar to the older Fluke 77 design, which are also great meters) that were made by Y-HP (Yokogawa - HP) that have been excellent meters and seem to run forever on a 9V battery.

If the U1252B is half as good overall as those two meters it will be a great meter.

Sam
W3OHM
Title: Re: Bunch of keysight U1252B meters around
Post by: electrolust on February 14, 2017, 08:36:42 am
Sam
W3OHM

Is that really your call sign?   8)

You sir probably are the most deserving of yet another DMM.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 14, 2017, 11:43:05 am
Glad to hear another purchase has been made.  Hopefully the guy who sold me mine will now ship it to me along with Sam's.

The accuracy of the U1252B is astounding, 0.05% on many ranges!  I also like the fact that it has a very low current range, 500 uA with a resolution of 0.01 uA, that's 10 nA!  I admit that there's the +- digits to affect that but even so, this is pretty awesome.  I do low current design work and the only meter I have that is better than this is an Agilent 34461A bench 6.5 digit multimeter (Basic accuracy: 0.0035% DC, 0.06% AC and DC current resolution down to 1 nA) which cost $1,000 after discount.

I'm on the fence about buying the U1117A Bluetooth-IR adapter, at $100 it's half the price of the meter.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on February 14, 2017, 07:31:13 pm
I'm on the fence about buying the U1117A Bluetooth-IR adapter, at $100 it's half the price of the meter.

It's all in how you look at it. Alternatively, you saved more than the cost of a U1117A, so buying one is practically free. Imagine if you had paid regular price for the DMM and then had to shell out another $100. ;D
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on February 15, 2017, 02:14:54 am
Ordered two.  Should be here next week or sooner.
Title: Re: Bunch of keysight U1252B meters around
Post by: Luap2 on February 15, 2017, 03:26:41 am
Got mine today ( Yea ) Date on cal. cert is  October 2012. Wonder if he running out ? Any one else have one with that old of a date?
the battery  was dead of course  but charged up in 35-40 min. Now  time to do some reading and watch some video's on this unit.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 15, 2017, 10:45:18 am
2012 seems a long time ago, I'd worry that the rechargeable battery is OK, NimH are better than NiCads for shelf life but 5 years may be long enough for them to be dead.  Spec sheet says that batteries can be:
 9 V alkaline battery (ANSI/NEDA 1604A or IEC 6LR61)
 9 V carbon-zinc battery (ANSI/NEDA 1604D or IEC6F22)
 7.2 V or 8.4 V Ni-MH rechargeable battery
I wonder what the rechargables are like?  Are they just regular 9v rechargeable? If so Harbor freight almost give them away.

I just got an eBay message saying mine had shipped.  When I checked the tracking number with USPS, it said the mailing label was printed at 1:49 am today (Wednesday) although the order was placed and paid for last Saturday (4 days ago).  It's supposed to arrive next Saturday.
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on February 15, 2017, 01:36:59 pm
I just got an eBay message saying mine had shipped.  When I checked the tracking number with USPS, it said the mailing label was printed at 1:49 am today (Wednesday) although the order was placed and paid for last Saturday (4 days ago).  It's supposed to arrive next Saturday.
Yes, mine "shipped" 4 days ago but USPS tracking says it is still to arrive with them - it does not exactly instil confidence  :(
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 15, 2017, 01:59:40 pm
Doc, I checked nmori87-us's eBay records and his scores are very high and has been around since 2012.  I suspect that, now he has 2 or 3 orders, a trip to the Post Office is on his to do list.  Having paid through PayPal, I'm not worried about the money.
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on February 15, 2017, 02:31:40 pm
Doc, I checked nmori87-us's eBay records and his scores are very high and has been around since 2012.  I suspect that, now he has 2 or 3 orders, a trip to the Post Office is on his to do list.  Having paid through PayPal, I'm not worried about the money.
Agree, I'm not too worried at the moment, but I'm always a little happier once I can see from the tracking that the parcel is actually moving.

I think he has had more than 2 or 3 orders recently though :)
Title: Re: Bunch of keysight U1252B meters around
Post by: akimmet on February 15, 2017, 04:07:17 pm
I received mine earlier this week, and I'm happy with it so far. Mine came with a May 2014 calibration.
The only thing I don't like are the included safety probes, and the slow continuity beeper (even when using the manual range trick mentioned in this thread).
I thought the orange back-light would be annoying, but it really isn't.

I can't seem to understand why some here are complaining about the color.
Sure, yellow would be better but I don't think Keysight would like another lawsuit.

I just got an eBay message saying mine had shipped.  When I checked the tracking number with USPS, it said the mailing label was printed at 1:49 am today (Wednesday) although the order was placed and paid for last Saturday (4 days ago).  It's supposed to arrive next Saturday.
Yes, mine "shipped" 4 days ago but USPS tracking says it is still to arrive with them - it does not exactly instil confidence  :(

I had the same problem with the tracking number with mine, I didn't get any updates at all until the day it arrived.
This has been a common occurrence with USPS lately. I have been told it is because the originating postman is too lazy to scan it when they pick it up. 
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 15, 2017, 04:13:35 pm
I just got an eBay message saying mine had shipped.  When I checked the tracking number with USPS, it said the mailing label was printed at 1:49 am today (Wednesday) although the order was placed and paid for last Saturday (4 days ago).  It's supposed to arrive next Saturday.
Yes, mine "shipped" 4 days ago but USPS tracking says it is still to arrive with them - it does not exactly instil confidence  :(

My second unit that received earlier this week has a 2012 cal date and is at least a year or more older than the first unit I ordered. The included 9v is an older 7.2V that is only taking a 1/2 charge after two charging sessions. Charge drops to 25% after <10 minutes of use. This battery is toast. I will be replacing both Ni-MH batteries so not an issue for me. With the meters side by side the older unit back light is much more yellow than orange. Not a big deal but the deep orange of the newer unit provides better contrast and is a bit easier to read. That one will clearly be my bench meter. The older meter I received has a Newark inventory bar code label on the box. I suspect it may have been a return of some type, maybe warranty return.
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 15, 2017, 04:19:21 pm

........I wonder what the rechargables are like?  Are they just regular 9v rechargeable? If so Harbor freight almost give them away.


No, the Ni-MH batteries are the high current type 250mAh-300mAh types. Standard, cheap NiMH are 175mAh batteries. I am replacing them with Powerex Precharged 9V Rechargeable Low Self Discharge NiMH Battery (MHR84VP). 8.4V, 300mAh.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on February 15, 2017, 06:16:21 pm
I had the same problem with the tracking number with mine, I didn't get any updates at all until the day it arrived.
This has been a common occurrence with USPS lately. I have been told it is because the originating postman is too lazy to scan it when they pick it up.

I've had that happen with tracking before, too, as has a friend of mine. Not unusual, unfortunately.
Title: Re: Bunch of keysight U1252B meters around
Post by: jimdeane on February 15, 2017, 07:16:36 pm
If someone wouldn't mind PM'ing me the seller, I'd like to follow him on Ebay.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on February 15, 2017, 11:26:20 pm
Jim, see reply #174 (https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/msg1137303/#msg1137303).
Title: Re: Bunch of keysight U1252B meters around
Post by: jpk42 on February 16, 2017, 06:25:59 am
How do these compare with a Fluke 179? Looking at getting one of the two for my primary multimeter, but I'm not sure what word on the street (aka here) is about which one is better....
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 16, 2017, 07:53:27 am
How do these compare with a Fluke 179? Looking at getting one of the two for my primary multimeter, but I'm not sure what word on the street (aka here) is about which one is better....
Other than temperature, I don't see the Fluke 179 as being much better than the Fluke 117 which I own and can be got for well under $200.

The Fluke 179's DC current only goes down to 0.01 mA at 1% +3 digits accuracy - on top of that it's is only a 1000 count meter.  Apart from being more awesome in every respect, the U1252B has 0.05% accuracy on many ranges and is a 50000 count meter.  It also has a very low current range, 500 uA with a resolution of 0.01 uA, that's 10 nA!  And then there's all the connectivty and data logging capability.  The Fluke 179 frequency range maxes out at 100 kHz while the U1252B goes up to 20 MHz and has a built in signal generator.  IMHO, comparing the Fluke 179 to the U1252B is like comparing a Ford Fusion to a Ferrari.
If you can get a U1252B for $200, JFBI (just f***ing buy it).
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on February 16, 2017, 08:07:04 am
How do these compare with a Fluke 179? Looking at getting one of the two for my primary multimeter, but I'm not sure what word on the street (aka here) is about which one is better....


Yep, the U1252B has much higher resolution and better accuracy. More features - dual display and others.

For a quick comparison, Wytncls multimeter spreadsheet (https://www.eevblog.com/forum/testgear/multimeter-spreadsheet/)helps.

"better" is a subjective term.  For example the Fluke may be more rugged and durable - or not. I have no experience with it. But based on specifications and features, the U1252B beats it easily. They're not even in the same class in that regard.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 16, 2017, 11:05:22 am
I forgot about the dual display, I'm looking forward to that.  I own a Fluke 117 and it's a great meter for basic electrical work but is limited for electronic workbench use.  An 'equivalent' Fluke might be the 87V which has 0.05% accuracy, a uA range, and a (single) 19999 display but it's not as good as the U1252B IMHO and is sold by Amazon for $400.  My tracking number still draws a blank  :(
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 16, 2017, 12:27:24 pm
...the Ni-MH batteries are the high current type 250mAh-300mAh types. Standard, cheap NiMH are 175mAh batteries. I am replacing them with Powerex Precharged 9V Rechargeable Low Self Discharge NiMH Battery (MHR84VP). 8.4V, 300mAh.
Thanks, I just ordered a Powerex MHR84VP 300mAh battery on Amazon Prime.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 16, 2017, 03:17:37 pm
Just contacted nmori87-us via eBay asking if he'd actually put my meter into USPS and he claimed he dropped if off last night just before the Post Office closed; if that's true, there's a chance it will arrive on Friday, more likely Saturday.  Not exactly full marks for shipping speed given we are forced to pay for priority mail  >:(

Thought you guys waiting would want to know this as I assume he would have droped all our meters off at the same time.
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 16, 2017, 04:45:23 pm
Just contacted nmori87-us via eBay asking if he'd actually put my meter into USPS and he claimed he dropped if off last night just before the Post Office closed; if that's true, there's a chance it will arrive on Friday, more likely Saturday.  Not exactly full marks for shipping speed given we are forced to pay for priority mail  >:(

Thought you guys waiting would want to know this as I assume he would have droped all our meters off at the same time.

I noticed that with my second meter but if you look at the rate at which he is selling them he would be going to the post every day. I think it was a week before mine was marked shipped. Once the meter hits the post it will ship pretty fast. Mine was express air in two days to CA.  The delay seems to be the seller queuing them up until he gets to the post.
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on February 16, 2017, 06:04:11 pm
Yeah,  that seller took 3 days to ship mine. I sent a message after 2 days and the response was " I'll be bringing it to the post office tomorrow".

FWIW mine came with a Powerex battery - at least 3 years old I suspect since the meter's cal certificate is dated June 2013. But it still had about 60% charge according to the meter bar gragh.
Title: Re: Bunch of keysight U1252B meters around
Post by: Luap2 on February 16, 2017, 07:24:16 pm
I noticed my battery lasting only 2 or so hours so ordered, off Amazon one of the powerex . My local battery's plus told me powerex stopped selling the 8.4 volt 300mah Batterys  in 2016  any one know if that is true?

I believe it took 3 to  days for my meter to get shipped once I placed the order  but once in the hands of USPS I got in 3 days. I like the pri. flat rate box's.  Living in Alaska some sellers if given the chance will charge way to much they ( the pri. boxes' ) are cheep and fast   
 
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 16, 2017, 09:23:02 pm
I noticed my battery lasting only 2 or so hours so ordered, off Amazon one of the powerex . My local battery's plus told me powerex stopped selling the 8.4 volt 300mah Batterys  in 2016  any one know if that is true?

Looks like they are still available on their site. No mention of discontinued. Don't know if they will standardize on the 9.6V battery option.

http://www.mahaenergy.com/powerex-batteries/ (http://www.mahaenergy.com/powerex-batteries/)

Personally I am going with these. Don't see them going anywhere soon.

http://www.mahaenergy.com/powerex-precharged (http://www.mahaenergy.com/powerex-precharged)
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 17, 2017, 12:10:14 am
Finally, I see information against the tracking number - it was accepted at the Post Office today at 12:41 pm, the order was placed last Saturday, so it's taken 5 days to get from the buyer to the Post Office. It's supposed to arrive Saturday but I'll be away.
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on February 17, 2017, 12:44:00 am
Regarding tracking number.

It seems there is some trouble with using tracking numbers though ebay.

What you can do is copy the tracking number from ebay, then go to USPS website and paste tracking number there.

Also.  It seems google has been thinking about all the tracking people are doing on their packages.  When I put "usps tracking" into google search, the very first thing that shows up in the results page is the applet? to paste the tracking number.  Paste the number in the text window, Track Via USPS button turns blue, click it and it will take you to your package tracking on USPS website.



(https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/?action=dlattach;attach=292859)
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 17, 2017, 01:04:18 am
Thanks, I already did it that way but I agree that eBay deals in non-real-time data
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on February 17, 2017, 09:07:36 am
Thanks, I already did it that way but I agree that eBay deals in non-real-time data
Same here, all I get is that the label has been generated so the tracking number is valid, but no tracking.

I've let the seller know.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 17, 2017, 09:28:17 am
Well something's on the way to me, it left Kansas City at 1:20 am today with an expected delivery date of tomorrow.
Title: Re: Bunch of keysight U1252B meters around
Post by: Lbud4 on February 17, 2017, 06:36:42 pm
Received my meter. Looks good. Cal is from 2012
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on February 17, 2017, 09:17:18 pm
It seems USPS doesn't update tracking very well. Sellers says he sent mine out on Wed. It's Fri now, and the USPS website says "USPS Awaiting Item".
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on February 17, 2017, 10:33:40 pm
With various shippers, including USPS, I've had packages delivered before the tracking system had tracking info available. ::facepalm::
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on February 17, 2017, 10:44:06 pm
Glad everyone is enjoying the meters. Instead of buying another I gave mine a good cleaning...

Has anyone figured out how to calibrate the meter? 

Also, what is the highest capacity battery that can be installed in the meter while maintaining the charging system?  Or is there an external charger that would allow me to keep a battery on trickle while using another that can then be swapped in? I saw the powered posts.

Thanks
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on February 17, 2017, 11:29:34 pm
I have not seen info about a maximum capacity for the rechargeable battery, just the two supported voltages. The only things that come to mind that could occur should you get one that has too much capacity is that (1) the charging circuitry could be overworked from running too long or, more likely, (2) an overcharge timer would terminate the charging cycle.

I don't know for sure that there is a charge cutoff timeout, but there typically is one for NiMH chargers in case the delta V or delta T sense doesn't trigger.
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 18, 2017, 12:26:34 am
I have not seen info about a maximum capacity for the rechargeable battery, just the two supported voltages. The only things that come to mind that could occur should you get one that has too much capacity is that (1) the charging circuitry could be overworked from running too long or, more likely, (2) an overcharge timer would terminate the charging cycle.

I don't know for sure that there is a charge cutoff timeout, but there typically is one for NiMH chargers in case the delta V or delta T sense doesn't trigger.

I see there are 9.6V Ni-MH batteries available but I stuck with the high cap 8.4V I am not sure the built-in charging system could charge the 9.6V to full cap. The  documentation does not address this configuration.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on February 18, 2017, 01:07:45 am
Yeah, I'm not sure. With an 8.4V battery, it's at approximately 10-11V when full.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on February 18, 2017, 04:47:07 am
Not to go off on a tangent, but I wonder why we can get 2800mAH out of a 1.2V cell but only 300mAH out of an 8.4V cell.  I would think we should get 400maH but that is only the mathematical coincidence.

I saw those batteries and I have a charger I guess that will work, so I am going to get two and leave one on the charger all the time.
Title: Re: Bunch of keysight U1252B meters around
Post by: kgharibyan on February 18, 2017, 05:22:41 am
Received mine, cal is Dec. 2015, nice item


Sent from my iPad using Tapatalk
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on February 18, 2017, 08:00:54 am
Not to go off on a tangent, but I wonder why we can get 2800mAH out of a 1.2V cell but only 300mAH out of an 8.4V cell.  I would think we should get 400maH but that is only the mathematical coincidence.

Calculate the miliWATT hours and I think you'll have your answer.

You could also use lithium rechargeable 9V batteries, though you can't use the built in charger...
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 18, 2017, 10:09:47 am
Not to go off on a tangent, but I wonder why we can get 2800mAH out of a 1.2V cell but only 300mAH out of an 8.4V cell.  I would think we should get 400maH but that is only the mathematical coincidence.

Calculate the miliWATT hours and I think you'll have your answer.

You could also use lithium rechargeable 9V batteries, though you can't use the built in charger...
To add to this.  The 8.4 volt battery has 6 x 300mAh cells inside it; you're trying to compare that to one 2800mAh cell.  Depending on the manufacturer, cells can have different capacities, obviously bigger cells have bigger capacities but better manufacturers get more mAh from the same size cell.  'Normal' rechargable 8.4 volt (6 x 1.4 volt) batteries in the PP9 format are only 175 mAh but the the Powerex brand claims to give you 300 mAh plus they claim a much longer shelf time (lower internal discharge).

As FlyingHacker has already said, work out the power using P = V x A.  A single cell NimH rated at 2800 mAh gives 1.4 x 2800 = 3920 mWh or 3.92 Wh, the Powerex 8.4 v, 300 mAh battery should give 8.4 x 300 = 2,500 mWh or 2.5 Wh.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 18, 2017, 01:40:11 pm
My tracking says "out for delivery"  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on February 18, 2017, 04:38:22 pm
As FlyingHacker has already said, work out the power using P = V x A.  A single cell NimH rated at 2800 mAh gives 1.4 x 2800 = 3920 mWh or 3.92 Wh, the Powerex 8.4 v, 300 mAh battery should give 8.4 x 300 = 2,500 mWh or 2.5 Wh.

Yep. So they are close. You would think the 9V has more volume and ought to have more power, but I think this is due to two factors: A) With the higher voltage the 9V requires multiple internal cells, and thus has more empty space B) Supply and Demand dictates that a lot more research be done into AA and AAA sized batteries, as they are much more ubiquitous.
Title: Re: Bunch of keysight U1252B meters around
Post by: Luap2 on February 19, 2017, 03:05:25 am
Have Had mine a week only thing I see on the down side is a small blemish on the screen and needing a new Battery. I can live with those 2 very small thing no problem.
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on February 19, 2017, 05:52:01 am
Have Had mine a week only thing I see on the down side is a small blemish on the screen and needing a new Battery. I can live with those 2 very small thing no problem.

Mine has a very small - about 1 mm diameter - blemish on the outer piece of plastic overlying the lcd screen.  It's in the top right quadrant - above the digits and it doesn't really bother me but I'm going to see if I can buff it out with some Novus plastic polish.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on February 19, 2017, 07:14:44 am
Mine, which wasn't one of these, has two little dots on the display. I would say the entire defect is less than a mm.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 19, 2017, 01:06:00 pm
Mine arrived yesterday, about 3 hours after I'd left for 8 days away.  The blemishes and minor screen defects that everyone seems to be finding make me I wonder if these are seconds?  I don't mind for the price but they are being sold as 'new'.
Title: Re: Bunch of keysight U1252B meters around
Post by: PTR_1275 on February 19, 2017, 03:31:33 pm
Mine had a cal certificate from 2015 and I was worried about the screen cover because there were a few marks under the screen protector. Normally I leave screen protectors on, but I removed this one and gave the screen a wipe with my finger and the mark was gone.

There was no doubt in my mind that mine was new, everything looked as I would expect it to come from the factory.

I bought a case from RS for it to protect it a bit when not being used (this is my first new handheld meter and I've recently gotten cases for all my flukes too). I am not a fan of the leads / probes that come with the meter so I've put a spare of my TL75 fluke leads in the case and put the keysight set in my spares drawer. I much prefer the fluke leads (or any that don't have banana plugs at both ends that you plug the pointy probe into) as they are quicker to get out of the case and use.
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on February 19, 2017, 05:13:14 pm
Mine had no blemishes at all. Seemed new, but older stock, cal late 2015.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 20, 2017, 05:50:32 pm
I'm on the fence about buying the U1117A Bluetooth-IR adapter, at $100 it's half the price of the meter.

It's all in how you look at it. Alternatively, you saved more than the cost of a U1117A, so buying one is practically free. Imagine if you had paid regular price for the DMM and then had to shell out another $100. ;D
I gave in and ordered a U1117A today from Allied Electronics, it was just over $100 with shipping.  I like the feature of a free App for my phone and I can also link it to my workbench PC using Bluetooth.

My U1252B is sitting unopened at my neighbor's house.  I am sitting in my cruise ship room in the Caribbean, it's an enormous ship, 5 times bigger than the Titanic according to onc article I read today - it's called The Allure of the Seas and the internet service is amazingly good.  I get back next Sunday (the 26th) when my U1117A should also have arrived, I'll report cal date and condition then.
Title: Re: Bunch of keysight U1252B meters around
Post by: sdouble on February 20, 2017, 10:01:24 pm
mine got shipped 4 days after the (paypal) money transfer occured. It 's currently over the ocean, slowly reaching its new country : france
Title: Re: Bunch of keysight U1252B meters around
Post by: RGK on February 22, 2017, 03:37:56 am
Bought & paid 2/12.
Left origin post office 2/16 with 2/18 expected delivery.
Tracking ceased 2/17 while "in transit to destination".
No new tracking progress or delivery as of 2/21 late PM.
Seller is responsive, but nothing to do but wait at this point.

Waiting for toys is hard.

BK

Title: Re: Bunch of keysight U1252B meters around
Post by: loxodes on February 22, 2017, 04:51:49 am
Bought & paid 2/12.
Left origin post office 2/16 with 2/18 expected delivery.
Tracking ceased 2/17 while "in transit to destination".
No new tracking progress or delivery as of 2/21 late PM.
Seller is responsive, but nothing to do but wait at this point.

I'm in the same position. Bought and paid on 2/12, left the origin post office on 2/16, "in transit to destination" on 2/17, and nothing since then..
From what I understand, "in transit to destination" is an automated message if USPS hasn't scanned the package in over 18 hours...
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on February 22, 2017, 09:33:48 am
Mine arrived yesterday.  Calibration certificates dated 2012 and 2013.

Ordered Feb 11.
Shipped Feb 16.
Arrived to local Post Office Feb 18.
Feb 20 was holiday, no delivery.
Delivered on 21.

USPS tracking was ok, I think.
Title: Re: Bunch of keysight U1252B meters around
Post by: natman69 on February 22, 2017, 03:53:17 pm
My U1252B arrived today. It was calibrated in april 2014.
It has a label "Peerless Electronic Supplies, Louisville KY" on the box.
It's clear and unused.

I've registered it on Keysight web portal and it has only a month of residual warranty.

This is my first serious multimeter!
I've noticed that if I put the knob on ac voltage without a source signal the value on the screen isn't zero but it keeps oscillating on about 6mV.
Is it thermal noise? Is it normal? Is it due to old calibration?
Even in dc voltage the reading fluctuates on 0.1mV.

Tomorrow I'll try to do some real measurement "on the bench".

Title: Re: Bunch of keysight U1252B meters around
Post by: iainwhite on February 22, 2017, 04:11:21 pm
I've noticed that if I put the knob on ac voltage without a source signal the value on the screen isn't zero but it keeps oscillating on about 6mV.

Might possibly be the Low Pass Filter setting?
See Post #85 (https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/msg1120588/#msg1120588)
Title: Re: Bunch of keysight U1252B meters around
Post by: PedroDaGr8 on February 22, 2017, 04:20:02 pm
My U1252B arrived today. It was calibrated in april 2014.
It has a label "Peerless Electronic Supplies, Louisville KY" on the box.
It's clear and unused.

I've registered it on Keysight web portal and it has only a month of residual warranty.

This is my first serious multimeter!
I've noticed that if I put the knob on ac voltage without a source signal the value on the screen isn't zero but it keeps oscillating on about 6mV.
Is it thermal noise? Is it normal? Is it due to old calibration?
Even in dc voltage the reading fluctuates on 0.1mV.

Tomorrow I'll try to do some real measurement "on the bench".
Entirely normal, remember it is a really high impedance input. This means it doesn't take much charge to register a voltage.

Sent from my LGLS992 using Tapatalk

Title: Re: Bunch of keysight U1252B meters around
Post by: deepskyridge on February 22, 2017, 09:02:14 pm
Glad everyone is enjoying the meters. Instead of buying another I gave mine a good cleaning...

Has anyone figured out how to calibrate the meter? 

Also, what is the highest capacity battery that can be installed in the meter while maintaining the charging system?  Or is there an external charger that would allow me to keep a battery on trickle while using another that can then be swapped in? I saw the powered posts.

Thanks

Here is a link to a Agilent document for the U1252B, it includes calibration procedures.

cp.literature.agilent.com/litweb/pdf/U1251-90036.pdf (http://cp.literature.agilent.com/litweb/pdf/U1251-90036.pdf)

Gary
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on February 22, 2017, 09:13:31 pm
Why not this manual that appears to be a bit more up to date.

http://literature.cdn.keysight.com/litweb/pdf/U1251-90036.pdf?id=1820177 (http://literature.cdn.keysight.com/litweb/pdf/U1251-90036.pdf?id=1820177)
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on February 22, 2017, 09:51:44 pm
Thanks, unimorpheus. The newest edition I had was 19. I didn't know it was up to 20, now.
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on February 23, 2017, 01:01:53 am
I paid on 13-Feb.
Seller says he put it in the mail 15-Feb.
Estimated delivery was 21-Feb
Now, 22-Feb end of day, USPS website still says "USPS Awaiting Item"
 :-//
Title: Re: Bunch of keysight U1252B meters around
Post by: ocw on February 23, 2017, 02:27:02 pm
I purchased two of the U1252B meters.  The first was purchased relatively early in the offering from Centerview, Missouri while the second one was purchased about two weeks ago.  The first meter received had a Keysight logo and had a calibration date of 05-Feb-2015.  The second meter came with an Agilent logo and had a calibration date of 08-Apr-2014.  The first meter appeared to be in an untouched box and came with the nice U1174A case.  The second meter came in what looked like a scavenged box.  The case and most of the packing material inside was missing.  Both meters came with a still sealed battery and with its meter face protection still in place.

I like to give my new meters "proof of performance" accuracy testing.  The results of that are attached.

For voltage accuracy I have a variety of voltage references.  With those being just simple home-made projects, the accuracy of my Agilent 34401A is better.  I used the 34401A to first confirm that the accuracy of the references are within their specifications and then I use the 34401A's reading as the voltage calibration standard to rate the U1252B's.  With the voltage standard's IC always being listed, the data can also be used to compare a variety of voltage references.

For resistance accuracy I used a fair number of mostly 0.01% resistors as references.

For current measurement I prefer to make the measurements with my most frequent circumstances when I measure current.  That's when I am NOT measuring a constant current source.  The added series resistance of a meter for current measurement can cause problems with the circuit that I'm trying to measure.  Sure, there are ways around that, but given a choice I'd prefer a meter which has me playing those games as little as possible.  So, my accuracy measurements are to a current determined by a precisely measured voltage and a precision (typically 0.01%) resistor.  I then rate the accuracy of the measurement two ways.  First, it's simply to the V/R current without considering the meter insertion resistance.  Then I add the effect of that resistance to that accuracy calculation for a different accuracy figure.  That second figure should match the manufacturer's specifications.  For higher currents the two accuracies can be very different.  For currents around 200 mA the U1252B's corrected accuracy was often around 0.1% while the uncorrected accuracy was over 17%.  Its spec sheet accuracy for that current is 0.2%.

I typically mark the shunt resistance of meters on them.  It's a good reminder of the meter's limitations.  Listing those two or three fixed values is more useful for me than trying to indicate the infinite number of actual burden voltages.

I used a similar technique for AC current accuracy measurement.  I have a OPA548 following my function generator to provide up to 2 amps RMS AC output.  The power line voltage here doesn't have enough stability to be suitable for use for meter accuracy verification.

At the end my report I show a picture of a recent test which I made using one of the U1252B's for a stability check of one of my current to voltage converters which I built.  It shows the stability of a 3.6 pA reading.  That was produced for testing by using a 3.6 volt battery and a 1T ohm resistor.  While the noise level negates the value of it, it's still nice to have 1 aA current resolution on the U1252B, improving to 0.1 aA with the 34401A.  I have managed the power line noise and am learning to deal with the op amp, Johnson, and cosmic ray noise.  The pictured current was using a converter having an ADA4530-1 op amp.  I have a second converter using an AD8067 for low current RF measurement.  More on the converters perhaps later.
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on February 25, 2017, 05:06:45 am
I paid on 13-Feb.
Seller says he put it in the mail 15-Feb.
Estimated delivery was 21-Feb
Now, 22-Feb end of day, USPS website still says "USPS Awaiting Item"
 :-//

Mine got returned to sender for some damn reason.
Gotta wait another week.
:rant:
Title: Re: Bunch of keysight U1252B meters around
Post by: RGK on February 25, 2017, 06:21:57 am
I paid on 13-Feb.
Seller says he put it in the mail 15-Feb.
Estimated delivery was 21-Feb
Now, 22-Feb end of day, USPS website still says "USPS Awaiting Item"
 :-//

Mine got returned to sender for some damn reason.
Gotta wait another week.
:rant:

Yep, several of us in the same position today it seems.  Hoping for a smoother second trip!

BK
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 25, 2017, 01:04:35 pm
Hmmm, what are the chances that 2 parcels from the same sender both get returned to sender?  I suspect that they were never given to USPS, I bugged the sender a couple of times before mine got sent.
Title: Re: Bunch of keysight U1252B meters around
Post by: kado on February 25, 2017, 02:19:57 pm
My actual shipping status:

Übersicht
Shipped from the Global Shipping Center to International Destination
Erlanger Kentucky 41025-2501 Thu Feb 23 13:34:00 GMT-07:00 2017
Customs Documentation and Labeling

Erlanger Kentucky 41025-2501 Wed Feb 22 13:51:00 GMT-07:00 2017
Delay at Global Shipping Center - Special Handling Review

Erlanger Kentucky 41025-2501 Tue Feb 21 01:58:00 GMT-07:00 2017
Processing at Global Shipping Center

Erlanger Kentucky 41025-2501 Mon Feb 20 19:24:00 GMT-07:00 2017
Arrived at Global Shipping Center

ERLANGER KY 41025 Sun Feb 19 07:20:00 GMT-07:00 2017
In Transit-Arrived at USPS Facility

CINCINNATI OH 45234 Sat Feb 18 22:12:00 GMT-07:00 2017
In Transit-Departed USPS Facility

CINCINNATI OH 45235 Sat Feb 18 13:11:00 GMT-07:00 2017
In Transit-Arrived at Post Office

CINCINNATI OH 45235 Sat Feb 18 12:26:00 GMT-07:00 2017
In Transit-Arrived at USPS Destination Facility

CINCINNATI OH 45235 Fri Feb 17 20:35:00 GMT-07:00 2017
In Transit-Departed USPS Facility

KANSAS CITY KS 66106 Thu Feb 16 23:44:00 GMT-07:00 2017
In Transit-Arrived at USPS Origin Facility

KANSAS CITY KS 66106 Thu Feb 16 21:11:00 GMT-07:00 2017
In Transit-Departed Post Office

WARRENSBURG MO 64093 Thu Feb 16 16:33:00 GMT-07:00 2017
In Transit-Acceptance

WARRENSBURG MO 64093 Thu Feb 16 12:41:00 GMT-07:00 2017

What means *Delay at Global Shipping Center - Special Handling Review* ???
Fault declaration or poor packing?

Karsten

Title: Re: Bunch of keysight U1252B meters around
Post by: sdouble on February 25, 2017, 07:55:34 pm
I bought 4 units. Took 4 days to ship and 1 week to get to france.
Packaging was not new (partially damaged for all 4). Agilent brand. Calibration date : october 2012.
Title: Re: Bunch of keysight U1252B meters around
Post by: MechEng2015 on February 25, 2017, 08:29:06 pm
Bought and paid for one on 2/17.
Seller claimed it shipped 2/22.
Tracking (USPS) as of 2/25 shows label created on 2/18 but item not yet received.
Seller says there were about 10 shipments not scanned and has opened an inquiry.

Title: Re: Bunch of keysight U1252B meters around
Post by: RGK on February 25, 2017, 10:35:06 pm
Bought and paid for one on 2/17.
Seller claimed it shipped 2/22.
Tracking (USPS) as of 2/25 shows label created on 2/18 but item not yet received.
Seller says there were about 10 shipments not scanned and has opened an inquiry.

Some not scanned and some returned to sender.  We can only speculate, but smells like improper packaging/labeling/postage on the recent crop.  Hoping that the re-shipments promised for today go as planned and per USPS Priority Mail requirements!

BK
Title: Re: Bunch of keysight U1252B meters around
Post by: Lbud4 on February 26, 2017, 12:13:44 am
I received my first meter just fine. Waiting on the second now. Unfortunately, USPS sucks. It might not be the seller. He has been very responsive to me.


Sent from my iPad using Tapatalk Pro
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on February 26, 2017, 03:21:47 am
How to find which firmware I have?
Title: Re: Bunch of keysight U1252B meters around
Post by: natman69 on February 26, 2017, 09:07:04 am
I think the only way to get the firmware version is using a data cable and the Keysight data logger software.
My DMM (built feb-2014) has firmware v2.18.
I haven't found a newer firmware on Keysight web site.
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on February 26, 2017, 12:25:33 pm
Bought and paid for one on 2/17.
Seller claimed it shipped 2/22.
Tracking (USPS) as of 2/25 shows label created on 2/18 but item not yet received.
Seller says there were about 10 shipments not scanned and has opened an inquiry.

Some not scanned and some returned to sender.  We can only speculate, but smells like improper packaging/labeling/postage on the recent crop.  Hoping that the re-shipments promised for today go as planned and per USPS Priority Mail requirements!

BK
Same story here.

Given the fact that the seller has been fairly responsive and, especially, that a 2nd attempt has now reached the Global Shipping hub I am prepared to give him the benefit of the doubt.

Hopefully this one will make it all the way to the UK without being mangled. Not that the GSP has the best of reputations for safe shipping.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 26, 2017, 01:03:19 pm
Sorry to hear about you guys' meters not making it :(  Mine is sitting at my neighbor's house (they sent me a picture) so I should catch up with it later today.  My U1117A Class 1 Bluetooth - IR link is also should be there.  Hope I got a good meter.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 26, 2017, 01:08:35 pm
What means *Delay at Global Shipping Center - Special Handling Review* ???
Fault declaration or poor packing?

Karsten
It's probably that the customs guys have looked at the parcel scan and are trying to figure out what it is so they can charge you some taxes.  I can't even send my granddaughter in the UK clothes without the pedantic customs guys writing to the recipient saying they owe VAT - even when it's genuinely marked as an unsolicited gift.
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on February 26, 2017, 02:00:01 pm
Sorry to hear about you guys' meters not making it :(  Mine is sitting at my neighbor's house (they sent me a picture) so I should catch up with it later today.  My U1117A Class 1 Bluetooth - IR link is also should be there.  Hope I got a good meter.

You won't regret that U1117A purchase, coupled with U1252B, it will be a very handy and quite powerful remote measurement & logging tool, I used it a lot.  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 26, 2017, 05:08:13 pm
Yes, the more I thought about it, the more the idea of having a remote reading capability appealed to me, especially on my iPhone and I can connect to Bluetooth on my big dual monitor PC.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 27, 2017, 12:35:26 am
Well I made it home safely and was united with my new meter.  It is 'Agilent' branded with a Cal date of Apr 10th, 2014.  It came in an Agilent U1252B box and includes the weird skins, a shrink-wrapped Powerex 250 mAh NimH battery that seems to be fully charged, the Cal certificate, the charger setup, and a nice set of Agilent U1166A test leads that include probes and croc clips.  It seems to be unmarked / flawless and a first power up indicates that it's working well.  I included a pic for y'all.
Title: Re: Bunch of keysight U1252B meters around
Post by: noidea on February 27, 2017, 02:21:53 am
My U1252B arrived today. It was calibrated in april 2014.
It has a label "Peerless Electronic Supplies, Louisville KY" on the box.
It's clear and unused.
I've registered it on Keysight web portal and it has only a month of residual warranty.

Mine came through the same supply path but cal date is April 15 so hopefully has a little more warranty left  :-+

Packaging for international transport was pretty ordinary, the meter was floating around in a plastic bag with the other bits and pieces in the Keysight box which had then been placed into
a USPS shoebox. I would have thought the Keysight packaging would have at least had some bubblewrap covering the meter.  :--
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 27, 2017, 11:42:11 am
@Noidea My meter was packed exactly as you described, the USPS box was actually 6 inches longer than the Agilent box inside and there was zero packing so the Agilent box could slide up and down inside the USPS box, a piece of crushed newspaper each end would have helped!  Inside the Agilent box, the meter was in a thin plastic bag rattling around with all the other stuff; I agree that, for a $400+ (list) product, you'd think they would at least have put the meter in a bubble-wrap bag.

Anyway, mine survived the journey unscathed.  I set up and tested the U1117A this morning, it came with Energizer lithium AAA batteries (classy) and works well :)
Title: Re: Bunch of keysight U1252B meters around
Post by: K5HJ on February 27, 2017, 08:14:50 pm
Power on with the Null button pressed to see firmware version.
Title: Re: Bunch of keysight U1252B meters around
Post by: BU508A on February 27, 2017, 09:53:18 pm
Seven minutes after I received the "you have bought the U1252B meter" confirmation email from ebay it was marked as "item sent".

That was pretty quick.  :o  *wow*   Red Flash, is that you?  ;D

So, let's see how long it'll take to arrive here in Germany.
Title: Re: Bunch of keysight U1252B meters around
Post by: Luap2 on February 28, 2017, 01:40:25 am
Now that I see how to get the firmware Version up,  217 is what a meter with a calb cert due on Oct 2013 has for firmware.
Some one with a much more resent Cal date care to post there  firmware version . Also anyone know if there is page on the website
(Keysight) giving the changes with each version
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on February 28, 2017, 02:57:57 am
Oct. 2016: v218
Title: Re: Bunch of keysight U1252B meters around
Post by: MatteoX on February 28, 2017, 03:05:38 am
April 2015 - ver. 218
Title: Re: Bunch of keysight U1252B meters around
Post by: RGK on February 28, 2017, 03:32:25 am
I received my first meter just fine. Waiting on the second now. Unfortunately, USPS sucks. It might not be the seller. He has been very responsive to me.

Still waiting for my meter to re-ship.  Seller already missed two promised re-ship dates.  Paid on 2/12 with expedited shipping, so this is getting tiresome.  USPS would not seem to be part of the problem here.  >:(

BK

*edit* Package now in transit again - fingers crossed.
Title: Re: Bunch of keysight U1252B meters around
Post by: natman69 on February 28, 2017, 08:17:20 am
April 2014: v218
Title: Re: Bunch of keysight U1252B meters around
Post by: electrolust on February 28, 2017, 08:55:13 am
Also.  It seems google has been thinking about all the tracking people are doing on their packages.  When I put "usps tracking" into google search, the very first thing that shows up in the results page is the applet? to paste the tracking number.  Paste the number in the text window, Track Via USPS button turns blue, click it and it will take you to your package tracking on USPS website.

Google has thought about this for years.  You don't have to do any of that.  Just type (or paste) the tracking number directly into the search box of your browser, if you're configured to use either Google or DuckDuckGo.  If you use Chrome, just type/enter the number directly into the "onebar" or whatever it's called.

You'll then directly be taken to the tracking page.  Doesn't matter if it's UPS, USPS, FedEx, DHL, perhaps others.  Saves a few clicks from what you're doing and you don't need to know the shipper.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on February 28, 2017, 12:55:48 pm
April 2014: v218

I just looked on the Keysight website but I can't find any firmware listings or downloads for the U1252B, interesting that my Agilent-branded, 2014 Cal-date meter has the same software vn as later Keysight-branded ones.
Title: Re: Bunch of keysight U1252B meters around
Post by: Jono427 on February 28, 2017, 02:39:02 pm
And in for one - instantly accepted $200
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on February 28, 2017, 10:22:48 pm
I just looked on the Keysight website but I can't find any firmware listings or downloads for the U1252B

IIRC, the U1250 series meters aren't updated by the customer. The U1253B had a customer-installable update, but it was a change to an EEPROM value via software tool, not firmware.
Title: Re: Bunch of keysight U1252B meters around
Post by: RGK on March 02, 2017, 03:25:54 am
Seller came through for me - arrived today.   :-+

Agilent branded with May 2013 cal cert.  Box/accessories/meter appear brand new and never touched.  Charging battery now.

I removed the large rectangular LCD protector obviously intended only for shipping.  Is there a second sturdier LCD protector underneath that shipping one?  Seem to have a 4mm bubble or blister on the screen that can be pressed down, but pops back up momentarily.  I can live with it - not sure I want to start lifting what might NOT be an LCD protector and regret it later.

BK
Title: Re: Bunch of keysight U1252B meters around
Post by: usagi on March 02, 2017, 06:48:42 am
legit!

purchased 3 on monday. got them today! very suprised they arrived this quickly.

 :-DMM  :-DMM  :-DMM

these are brand spanking new. everything is sealed, including the battery. not a scratch on anything. even has a bit of new electronics smell.

agilent branded, Jun 2012 cert. firmware 217.

unbelievable deal.
Title: Re: Bunch of keysight U1252B meters around
Post by: aargee on March 02, 2017, 07:29:27 am
There we go.. joined the club.

Now the wait for transit to Australia.

Workbench is getting an overhaul..
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on March 02, 2017, 11:31:53 am
legit!

purchased 3 on monday. got them today! very suprised they arrived this quickly.

these are brand spanking new. everything is sealed, including the battery. not a scratch on anything. even has a bit of new electronics smell.

agilent branded, Jun 2012 cert. firmware 217.

unbelievable deal.
I gues sthe seller, or USPS, has sorted his delivery issues out.

International shipping is, ahem, somewhat different - still waiting for mine. It appears to have reached the UK but once again we have the final courier tracking it as "label generated" but not on the move.

I hope it does not go missing

At least we can't blame this one on the vendor   :-\
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on March 04, 2017, 02:48:19 pm
Finally arrived  :-+ :)

3 and a half weeks and one lost to the USPS.

Aug 2013 cal, Agilent branded with v 217 firmware. Newer would have been nice as there will be no manufacturer warranty left but I'm not complaining. Not much point in registering with Keysight.

Accuracy seems fine, it agrees (to the last digit) with my Keithley 2015 that my DMMCheck has drifted high (currently measuring 5.0012V), it looks as though the Tenma 72-7732A that I bought from Top Loser is reading a bit low at 4.996V (though technically still within spec which is 0.05% plus 5 counts).

The included power supply (24V @ 2.5A) appears to be total overkill for charging a 250mAh 8.4V NiMH battery, and who thought having the PSU plug into the current range was a good idea?

Packing similar to everyone else, in my case a sad bit of bubble wrap inside the USPS box which was insufficient to stop the Agilent box from moving around.
Title: Re: Bunch of keysight U1252B meters around
Post by: RGK on March 04, 2017, 07:32:08 pm
On batteries:

The (unsealed/uninstalled) white Powerex 7.2V 300mAh battery included with my May 2013 meter charged quickly in the meter but did not indicate 100% on the bar graph.  Lasted <2hrs of continuous use.  Ordered an Ansmann 6F22 8.4V 300mAh low discharge replacement, figuring the original was done.

Charged the Powerex again, and this time it took significantly longer and the bar graph indicated 100%.  Battery never got warm during charge.  I defeated the auto power off and got ~40hrs of continuous use.  When the bar graph reached ~50% the low battery symbol started to flash and very quickly thereafter the meter powered off.

I'll see how much run time the new Ansmann provides.  The low discharge chemistry will be nice.  There is a setup setting to choose between 8.4V and 7.2V battery types.

So, cycle the included battery a few times, just like the manual says, before you rush out and buy a new battery for your U1252B!

BK

*edit* Just noticed towards the end of the third Powerex charge the battery surface temperature was a toasty 48C.

Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on March 04, 2017, 11:34:42 pm

*edit* Just noticed towards the end of the third Powerex charge the battery surface temperature was a toasty 48C.

Easier to just replace w/ new. No second guessing.
Title: Re: Bunch of keysight U1252B meters around
Post by: RGK on March 04, 2017, 11:49:03 pm

*edit* Just noticed towards the end of the third Powerex charge the battery surface temperature was a toasty 48C.

Easier to just replace w/ new. No second guessing.

Indeed.  New Ansmann battery is charging now to top it off.  I expect this one to also get warm.  Now I have a backup battery in the Powerex.

BK
Title: Re: Bunch of keysight U1252B meters around
Post by: BU508A on March 07, 2017, 08:24:43 pm
Received today my U1252B
Order date: 20170227
Firmware v. 2.17
Calibration date: 20120604

See pictures

Title: Re: Bunch of keysight U1252B meters around
Post by: Luap2 on March 07, 2017, 08:49:49 pm
BU508A  Even though I have had mine for 2 weeks or so, your pictures brought back the unboxing thrill thanks 
Title: Re: Bunch of keysight U1252B meters around
Post by: usagi on March 08, 2017, 05:31:04 am
can anyone recommend a good screen protector for these?
Title: Re: Bunch of keysight U1252B meters around
Post by: unimorpheus on March 08, 2017, 03:40:44 pm
can anyone recommend a good screen protector for these?

I just leave the one it came with on. Cut around the screen with an x-acto blade in the gap between the screen and case to remove the overhang. My 20+ year old Fluke 87 still has the screen protector on that it shipped with.
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on March 08, 2017, 03:47:09 pm
can anyone recommend a good screen protector for these?

Use smart phone screen protector, so many types, they're quite large and can be trim to fit it perfectly.

My fav is the hazy non reflective one.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on March 08, 2017, 05:25:36 pm
Yes, smartphone screen protector. Get a big one to protect two DMMs. What? Don't have two DMMs? How can that be?
Title: Re: Bunch of keysight U1252B meters around
Post by: Luap2 on March 12, 2017, 05:54:33 am
I had to replace the M/A fuse today. At the local elect. supply store it was 9.95    Anyone ordered some  from one of the big elect. supply houses in the US or Is that the going price? 
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on March 12, 2017, 11:36:48 am
I had to replace the M/A fuse today. At the local elect. supply store it was 9.95    Anyone ordered some  from one of the big elect. supply houses in the US or Is that the going price?
HRC fuses are expensive. There is at least one multi-page thread on here just about the cost of multimeter fuses…
Title: Re: Bunch of keysight U1252B meters around
Post by: usagi on March 12, 2017, 10:53:26 pm
wonder if there will be another batch for sale.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on March 13, 2017, 03:46:38 am
New batch listed. Going to get more, usagi? :-DMM

Update: The seller said that he's got plenty of these available, so if anyone wants needs to buy more than one, you don't have to worry about depriving someone else from being able to get one.
Title: Re: Bunch of keysight U1252B meters around
Post by: Iwanushka on March 15, 2017, 10:49:58 pm
Mine should arrive tomorrow if local guys won't f**kup as always took two weeks to get it from US to LTU (in EU) via ebay shipping, will have to check invoices I think they charged ~20-30usd more than what total near buy button showed.

Edit: mine just arrived, everything is brand new even the battery is sealed, cal is 31-Aug-2012, FW: V2.17;
        now need to figure out why ebay charged more than it showed at buy button, but I don't have time and I think 20usd is not a problem, after all it costed me 320usd (220 for seller instead of 200 which he accepted, and 102 usd for shipping+customs, Ebay showed total: Meter 200, shipping 45, 65 for customs, ebay instantly took 45+65 for the shipping/customs and later charged 220 for meter to the seller WTF? it should have been 200 for meter, 45 for shipping +65 for customs)

Best Regards,
Mantas
Title: Re: Bunch of keysight U1252B meters around
Post by: aargee on March 16, 2017, 12:03:13 am
Arrived yesterday... seems to be working well.

30 June 2012 Cal, 2.17 FW

My screen had a large over-size protection sheet on it, underneath was another 'fitted' screen protector underneath on the screen.
Title: Re: Bunch of keysight U1252B meters around
Post by: BU508A on March 17, 2017, 08:37:48 am
This is the output of the square wave generator of the U1252B I received some days ago:

Title: Re: Bunch of keysight U1252B meters around
Post by: usagi on March 18, 2017, 12:20:10 pm
i'm going to have a go using the laser cutter at work to cut some glass screen protectors.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on March 18, 2017, 12:34:15 pm
i'm going to have a go using the laser cutter at work to cut some glass screen protectors.
Any chance you could make a few and send some my way? 0:)
Title: Re: Bunch of keysight U1252B meters around
Post by: nanofrog on March 18, 2017, 03:14:21 pm
My screen had a large over-size protection sheet on it, underneath was another 'fitted' screen protector underneath on the screen.
FWIW, mine did as well.

I bought mine from Arrow years ago when Agilent was running a $100 rebate. It was still quite a deal, so I'm not suffering buyer's remorse.  :P
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on March 19, 2017, 09:28:47 pm
I paid on 13-Feb.
Seller says he put it in the mail 15-Feb.
Estimated delivery was 21-Feb
Now, 22-Feb end of day, USPS website still says "USPS Awaiting Item"
 :-//

Mine got returned to sender for some damn reason.
Gotta wait another week.
:rant:
My meter finally arrived at my parcel receiver on Mar 1. I finally got around to picking it up the other day. Declared it at the border but they didn't ask for any tax or duty  :-+

I got a cal cert from June 2013. Also in the box, was a quick start guide (no manual), a bunch of regulatory paperwork, and some stupid skins. The display had a protective film over it to protect during transportation, which I pulled off. Beneath that is a another fitted film, which protects the plastic display cover. That plastic display cover is integrated into the meter shell, which when you lift off, reveals the actual LCD display glass inside, STD free!

The meter comes with some nice silicone probe leads. They are the kind with shrouded 4mm plugs at both ends (90deg @ the meter), so you can change out the implements. You get some OK looking croc clips, and some not especially sharp probes, which have thick plastic sleeves covering all but the last few millimeters. I was unable to remove the sleeves, meaning that they will not fit into tight sockets. I'm glad I recently bought a nice separate Mueller probe kit. The probes also come with some little plastic condoms, which I think are for protecting the tips. They are complete rubbish though because they fall off really easily.

Inside the meter are some fancy, German made, sand filled fuses. The battery cover is kind of fiddly to install and takes some getting used to. I haven't figured out the tilting bale yet. It looks like you can use it to hang the meter, but it's not immediately obvious how. The back cover screws into threaded inserts, and the whole shell feels pretty robust and has a molded rubberized grip. The display is sharp and visible from all angles, and the backlight is nice and bright. The smooth plastic window is very prone to reflections though.

The meter is supposed to be powered by a standard PP3 9V battery, or the included rechargeable 7.2V, 300mAh NiMH battery. The battery that came with my meter was totally flat, and wouldn't charge. I take issue with this, because the meter is being sold as "Brand new and undamaged". I think the seller needs to disclose in the item description that the battery will not work. The included Powerex MH-72V300 battery is no longer in production and has been superseded by the MHR84VP, which presumably has a longer shelf life. For charging you get a rather large 24V, 2.5A switcher power brick. The power supply has banana jacks, which plug into the meter probe sockets for charging. This is nice, because if you don't have the brick, you can charge it from a lab power supply. However, this system can also destroy your meter if you don't have it in the OFF position. Presumably, there is charge control circuitry inside the meter which steps down the voltage. One major complaint I have with this system, is that there is no charge indication whatsoever, so you have no idea what it's doing. It needs an LED or something, which tells you if it's actually charging, and when it is complete. (Unless I'm missing something due to my faulty battery). The little brochure says not to charge the battery if capacity is still over 90%, so it sounds like the meter is not smart enough to terminate charging by itself.

That's my first impression. I haven't used the meter much yet, but I tried the continuity test and it doesn't feel very good. It's noticeably slow, and flaky. When you hold the probes together you don't get steady tone unless you really force it.
Title: Re: Bunch of keysight U1252B meters around
Post by: nanofrog on March 19, 2017, 09:46:13 pm
. I haven't used the meter much yet, but I tried the continuity test and it doesn't feel very good. It's noticeably slow, and flaky. When you hold the probes together you don't get steady tone unless you really force it.
Try cleaning the probe tips, and see if that helps (common enough complaint; also keep in mind it's not a latching continuity meter).  ;)

Mine did the same thing with the stock probes (cleaning helped), but it was fixed instantly when I used a Probemaster set.
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on March 19, 2017, 09:51:26 pm
. I haven't used the meter much yet, but I tried the continuity test and it doesn't feel very good. It's noticeably slow, and flaky. When you hold the probes together you don't get steady tone unless you really force it.
Try cleaning the probe tips, and see if that helps (common enough complaint; also keep in mind it's not a latching continuity meter).  ;)

Mine did the same thing with the stock probes (cleaning helped), but it was fixed instantly when I used a Probemaster set.
It also helps to set a fixed range - it still autoranges in continuity so you get a little delay while it decides what range to use, then another little delay while it decides if it needs to beep.
Title: Re: Bunch of keysight U1252B meters around
Post by: usagi on March 19, 2017, 10:17:27 pm
i find it baffling to nitpick over a $12 battery for an excellent BNIB meter that is >50% off street price.

sorta like complaining about getting a brand new $150,000 ferrari for $60k and complaining about a flat battery.
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on March 19, 2017, 10:55:22 pm
i find it baffling to nitpick over a $12 battery for an excellent BNIB meter that is >50% off street price.

sorta like complaining about getting a brand new $150,000 ferrari for $60k and complaining about a flat battery.
Totally irrelevant. If you buy a "brand new" car, and it doesn't run because the battery is faulty, then you are entitled to new battery.

I cleaned the tips with IPA which helped a bit with continuity. Setting the range to megaohms helped a bit too, but it still doesn't work as well as my cheap-o meter.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on March 20, 2017, 12:25:23 am
It's not surprising that the battery would be flat given that it's been sitting in the box for almost four years. It would've been better had the listing said, "New old stock".
Title: Re: Bunch of keysight U1252B meters around
Post by: sdouble on March 20, 2017, 02:02:03 am

I cleaned the tips with IPA which helped a bit with continuity. Setting the range to megaohms helped a bit too, but it still doesn't work as well as my cheap-o meter.
why would you want to use a good beer to clean a tip ? :o
.

..
...
 :-DD
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on March 20, 2017, 03:03:12 am
It's not surprising that the battery would be flat given that it's been sitting in the box for almost four years. It would've been better had the listing said, "New old stock".
That's exactly what I was thinking. Or "As-is"


why would you want to use a good beer to clean a tip ? :o
Perish the thought!


Title: Re: Bunch of keysight U1252B meters around
Post by: Iwanushka on March 20, 2017, 11:05:02 pm
My battery from 2012 meter charged, just fine, and meter tells you when it's finished, but that battery is useless, It will self-discharge in 6 months (I bought one meter from Farnell at end of 2014 at full EU price  |O) and I have to charge that crap every 6 months with 0 use, also sometimes it does not charge from the first time, keep it plugged for 10 min disconnect wait some time then connect and there we go it's charging, Need to get some Lithium batteries for those meters, but then I need to find quality charger :(

Edit: Conclusion don't worry about that battery its POS that will need to be charged every few months even if meter is never used and get quality Lithium batteries.
Title: Re: Bunch of keysight U1252B meters around
Post by: aargee on March 21, 2017, 01:23:45 am
Never use it for six months?  :scared:

I know what you mean though, these rechargeables are not really up to the task. How are you finding the meter running from a Lithium battery?

The battery supplied with mine charged just fine.
Title: Re: Bunch of keysight U1252B meters around
Post by: 1Ghz on March 21, 2017, 01:53:06 am
July 2012: v217

Great deal!  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on March 21, 2017, 04:50:46 am
The 8.4V Powerex that came with my meter has been holding charge very well. I last charged it five months ago and, after a few hours total runtime, it's still at 70%.
Title: Re: Bunch of keysight U1252B meters around
Post by: Iwanushka on March 21, 2017, 11:12:21 am
Never use it for six months?  :scared:
you know how it is, either you have tools but don't have time or vice versa, also I have too many meters, thus my primary one is Amprobe 35XP-A when I'm not working on my projects that need more digits  :-DD, it's still kicking after almost 10 years, and I hate the idea to keep something like u1252b in tools box with all metal saws, screw drivers, hammers, and so on.


I know what you mean though, these rechargeables are not really up to the task. How are you finding the meter running from a Lithium battery?

I still have to buy the battery/charger but never have time for that...
Title: Re: Bunch of keysight U1252B meters around
Post by: Fohdeesha on March 26, 2017, 02:00:44 pm
Can someone with this meter confirm the backlight behavior? Is there a way to keep the backlight on indefinitely or does it always time out?
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on March 26, 2017, 02:03:56 pm
Can someone with this meter confirm the backlight behavior? Is there a way to keep the backlight on indefinitely or does it always time out?
Set the backlight timer to "off", see the manual.
Title: Re: Bunch of keysight U1252B meters around
Post by: mstck on March 26, 2017, 09:13:01 pm
I just couldn't resist. Just received my meter. 2012 version. Looks good. The 7.2V battery  appears to have accepted the charge and the meter works OK.  However when I push the batter test the bar graph advances to 2.6 on the display.  Took the battery out and measured the terminal voltage  at 6.7V.  Is this to be expected?
I note that the meter can take a 9V alkaline battery also. If you decide to use one of these, do you have to change the battery voltage in the setup  to 8.4V. Currently mine is set to 7.2
Title: Re: Bunch of keysight U1252B meters around
Post by: Fohdeesha on March 27, 2017, 12:55:03 am
Can someone with this meter confirm the backlight behavior? Is there a way to keep the backlight on indefinitely or does it always time out?
Set the backlight timer to "off", see the manual.

Awesome! Exactly the capability I was looking for. Going to bite the bullet and order one next week. Will be my first non garbage (unii-t) meter
Title: Re: Bunch of keysight U1252B meters around
Post by: Iwanushka on March 27, 2017, 11:41:25 pm
I note that the meter can take a 9V alkaline battery also. If you decide to use one of these, do you have to change the battery voltage in the setup  to 8.4V. Currently mine is set to 7.2

This setting is for charging battery using Agilent Brick, if you have 8.4V battery and you want to charge it via meter's charger/brick you set it to 8.4V and so on. If you use regular battery it does not matter what setting you have.

Note: you can't charge Lithium batteries, only NiMH and maybe NiCad too, check manual!.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on March 28, 2017, 12:22:07 am
However when I push the batter test the bar graph advances to 2.6 on the display.  Took the battery out and measured the terminal voltage  at 6.7V.  Is this to be expected?

The bar graph display is 0-100% for battery charge level, rather than voltage.
Title: Re: Bunch of keysight U1252B meters around
Post by: Heffa on March 31, 2017, 06:49:50 am
One more unit (hopefully soon) on the way to Sweden  :)

Thanks for the heads-up on this!
Title: Re: Bunch of keysight U1252B meters around
Post by: BU508A on March 31, 2017, 07:34:16 am
However when I push the batter test the bar graph advances to 2.6 on the display.  Took the battery out and measured the terminal voltage  at 6.7V.  Is this to be expected?

The bar graph display is 0-100% for battery charge level, rather than voltage.

I've kicked out the Powerex MiMH battery, since I do not trust this thing after 5 years not used etc.
I replaced it with this:
http://cpc.farnell.com/ansmann/5035453/battery-9v-300mah-precharged-1pk/dp/BT04675 (http://cpc.farnell.com/ansmann/5035453/battery-9v-300mah-precharged-1pk/dp/BT04675)

It is working very well.
Title: Re: Bunch of keysight U1252B meters around
Post by: Jono427 on March 31, 2017, 03:19:23 pm
https://servicenotes.literature.keysight.com/litapp/SearchSN.do?method=openExternalSNSearch&prodNum=u1252b

FYI - might want to check if you serial is in any of these (depending on how you use it).

Not sure if you can get the free piece for U1252B-06 still, but mine is not in that serial range anyway.
Title: Re: Bunch of keysight U1252B meters around
Post by: Iwanushka on March 31, 2017, 06:17:55 pm
https://servicenotes.literature.keysight.com/litapp/SearchSN.do?method=openExternalSNSearch&prodNum=u1252b

FYI - might want to check if you serial is in any of these (depending on how you use it).

Not sure if you can get the free piece for U1252B-06 still, but mine is not in that serial range anyway.

My Both DMMs have serials with MY533 (got it from Farnell) and MY532 got it of Ebay, so both of them are in oldest 3 Lists,but only A-ERR worries me, Lets hope they will work w/o issues for rest of their lives.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on March 31, 2017, 08:24:07 pm
There was a second screen protector fitted on my meter by the way and I regret removing it.  The underlying plastic screen marks easily.  I'm going to purchase a cell phone cover that spans the screen and cut it to fit.

Yep, should have left well enough alone.  It is clearer but they put that second protector on there for a reason.

Glad everyone is enjoying their meters.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on April 01, 2017, 04:34:17 am
And they did a pretty nice job with that screen protector. I didn't even notice it until someone mentioned it in this thread. I had to take a really close look to see that the corners were cut with a larger radius.
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on April 04, 2017, 08:07:56 pm
Well, here's a thing :)

I arrived home to find a 2nd U1252B - or rather the first, which seems to have emerged from a USPS generated wormhole.

I'll see how the seller wants to handle it
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on April 04, 2017, 08:14:00 pm
Heh, just the other day, the USPS finally delivered to me an eBay purchase that was shipped, and supposedly delivered according to the tracking info, four months ago. Four months! :palm:
Title: Re: Bunch of keysight U1252B meters around
Post by: PTR_1275 on April 04, 2017, 10:49:11 pm
The boss at my new work saw my meter and really liked it. After letting the other engineers use it for a few days they liked it for measurements away from the benches so he bought 4 of them. They arrived yesterday and were all agilent branded ones, so a bit older than my keysight branded one. I'll check the cal certificates to see what age they are. The low pass filter for DC was off by default on the agilent ones (but it was on with my keysight). The seller seems to still have lots of them available, has anyone worked out where they came from yet?
Title: Re: Bunch of keysight U1252B meters around
Post by: Octane on April 05, 2017, 12:07:17 am
Thanks for the brilliant info! Bought one for $200+shipping!
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on April 05, 2017, 03:04:17 am
The seller seems to still have lots of them available, has anyone worked out where they came from yet?

Yep, he still has lots of them. They were from a large job lot purchase of Agilent/Keysight equipment for an industrial project some years ago. Apparently, they didn't use/need the DMMs that were part of the purchase, hence their still being new in the box.
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on April 06, 2017, 08:51:32 am
Well I now have a spare :)

If anyone in the UK wants to buy it then PM me

Aug 2013 cal v217 firmware. Looks to be in spec compared with my DMMCheck/Keithley 2015 but I can't do an exhaustive calibration check.

£200 if anyone wants it - that's cheaper than buying off nmori87-us which comes to about £237 after all charges and fees, even if you offer him $200.
Title: Re: Bunch of keysight U1252B meters around
Post by: Metermeister on April 06, 2017, 09:51:54 pm
Can someone tell me how this model stacks up against the Keysight U1251B.
I was about to purchase the latter but now I'm intrigued. TIA
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on April 06, 2017, 10:49:02 pm
Can someone tell me how this model stacks up against the Keysight U1251B.
I was about to purchase the latter but now I'm intrigued. TIA
The accuracy of the U1251B is a little lower and a few features are missing, compared to the U1252B.
I have the U1253B, which is the same as the U1252B it just has the OLED display.

Charging the battery for the U1253B takes 3 hours!



Title: Re: Bunch of keysight U1252B meters around
Post by: Octane on April 08, 2017, 12:17:43 am
Got mine today. Packaging was less then ideal (not padding in between USPS box and meter box), but it survived.
Batterie was empty, but it seems that I can charge it. It says "bAt" on display and something like ~205 m counting down (I assume this are minutes till full!?)

Calibration certificate is from: September 15th, 2012. So rather old. Couldn't look the firmware version up yet.
BTW, it is an "Agilent" one.

After removing the first screen protector I saw a bubble under the second one and decided to remove the second one as well.
Wrong move.  |O Now I have the sticky stuff messing up the display and no alcohol at hand for cleaning it. I hope I can fix that.
Otherwise it looks good.

I have to confirm that the seller immediately marks it as shipped in eBay, but in my case it only took I'm about a day to bring it to the post office. The shipping from there was pretty fast.

Michael
Title: Re: Bunch of keysight U1252B meters around
Post by: slothsd on April 08, 2017, 12:39:45 am
Received mine today. Packing is same as poster above with no bubble wrap inside. Cal cert is 31 Aug 2012 and is Agilent branded. Haven't used the packed NiMH bat and instead used an alkaline 9V bat. NiMH measured 2.5V with the meter.

Best offer is was $200 immediate. Tried $195 and the seller came back with $215 so $200 looks to be the sweet spot.

Ordered 31 March and shipped April 4th.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on April 08, 2017, 04:44:39 am
Batterie was empty, but it seems that I can charge it. It says "bAt" on display and something like ~205 m counting down (I assume this are minutes till full!?)

The charge circuit monitors the battery to determine when it's full. The countdown timer is just a backup in case it doesn't detect when the battery is full.

Quote
Calibration certificate is from: September 15th, 2012. So rather old. Couldn't look the firmware version up yet.

Turn off the meter. Hold down the Null button. Turn on. Release the Null button and the version will be displayed. The latest is 218.

Quote
I have to confirm that the seller immediately marks it as shipped in eBay, but in my case it only took I'm about a day to bring it to the post office. The shipping from there was pretty fast.

If a seller purchases shipping via eBay, then eBay will immediately mark the item as shipped and insert the tracking number. eBay doesn't track when it is actually handed off to the carrier.
Title: Re: Bunch of keysight U1252B meters around
Post by: Octane on April 08, 2017, 05:21:56 am
The charge circuit monitors the battery to determine when it's full. The countdown timer is just a backup in case it doesn't detect when the battery is full.
Thanks, just read that in the manual.

Quote
Turn off the meter. Hold down the Null button. Turn on. Release the Null button and the version will be displayed. The latest is 218.
Ah, there we go. FW version is 217. This can't be upgraded in the field, correct?

Quote
If a seller purchases shipping via eBay, then eBay will immediately mark the item as shipped and insert the tracking number. eBay doesn't track when it is actually handed off to the carrier.
Ok, didn't know that. Not very clever....
Title: Re: Bunch of keysight U1252B meters around
Post by: Iwanushka on April 08, 2017, 07:30:30 pm
You can ignore 218 FW as far as I know it just enables LPF by default, which you can and need to do in Setup to make it immune to RF noise.
Title: Re: Bunch of keysight U1252B meters around
Post by: famalex on April 08, 2017, 10:43:18 pm
Well, I received my second u1252b two days ago.  The first was Keysight brand, I bought it six months ago,  and the "new" is Agilent. The seller has  warned me about it. Calibration certificate  (of course) is from 2012, FW 217.  Surely,  the battery lost its original capacity,  the time for full charging was only 20 min. Absolutely natural inevitable degradation. Everything is normal here.   After initial switching on I saw some glare and several (normally inactive) segments on the display. I thought that my device, or at least the display, is dead.  Fortunately this abnormality gradually disappeared after 10-15 min of working. LCD displays also degrade when not working for many time, but this is reversible.  In any case,  I hope so.  We will see.  Oh yeah,  the rotary switch! It is wery tight. Certainly for the strong men.   It is necessary to hold the device with both hands to switch it!  Maybe I need to grease it?...   Okay,  okay, I'm joking.  As regards the accuracy,  needs some time to draw conclusions. Perhaps, I  send it for calibration (€60).
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on April 08, 2017, 10:54:38 pm
The NiMH battery, after sitting in storage for a long time, may also come back after a few charge-discharge cycles. So, don't give up on it just yet.

A little lubrication on the rotary switch, if accessible, may help. Otherwise, it'll probably loosen up with some use.
Title: Re: Bunch of keysight U1252B meters around
Post by: Iwanushka on April 08, 2017, 11:56:17 pm
Rotary switch on u1252b is firm and needs more force than squishy/loose ones like on u1282a or u1272a, u1272a is better than u1282a but I hate them it's hard to tell if you set it right, best one from agilent for me is u1252b rotary switch

Edit: and yes NiMH batteries recover after a few cycles
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on April 09, 2017, 07:11:06 am
USPS shows mine is out for delivery today. We shall see if it is a meter, or a box of rocks!
Mine arrived yesterday, at my friend's house in USA. I'll be skyping with him to check the units, but given everyone else's experiences, I doubt there will be any issues.
So my friend brought me one of the meters on his visit over here. Keysight branded, firmware 2.18, calibration cert is from March 18, 2015. Powerex battery came with 60% charge. I turned off the LPF, since it slows down the measurement speed so much as to make me rip my hair out. (Since I also picked up a Keithley 2015 recently, I've become spoiled with regards to measurement speed.)
Title: Re: Bunch of keysight U1252B meters around
Post by: Kuro on April 10, 2017, 07:10:54 pm
Let us know how much the customs officers made you bleed...
Title: Re: Bunch of keysight U1252B meters around
Post by: Iwanushka on April 10, 2017, 11:44:14 pm
Let us know how much the customs officers made you bleed...

In EU Ebay took care for me of all that, shipping was 45$ customs/VAT/w.e 65$ +200$ for meter total ~302 euros.
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on April 11, 2017, 07:09:45 am
I have ordered one from the USA and when the one from grumpydoc became available, I bought his as well.
Seems to be a real good deal and good addition to my U1253B
 
Title: Re: Bunch of keysight U1252B meters around
Post by: Metermeister on April 11, 2017, 08:00:26 pm
Anyone here buy one off this seller since April 7?? I bought one Friday 9am April 7.....I communicated with the seller and he said he would ship either Sat morning  (April 8) or Monday.....Well ...Monday evening nothing changed ..Still said Item not shipped...soooo..I emailed the seller..he said sorry..it's going out tonight....
Well Tuesday afternoon..
.no indicator ...shipping status hasn't changed..still says Item Paid (April 7) but not shipped....I just sent off another email but no response as of yet....Honestly...I'm sure he's just slowwww at shipping..but I'm surprised not 1 negative feedback. It's now been 5 days...I'm paid the equivalent of over 300$ Canadian...so I'm not super impressed. I'm also an Ebay seller..my items always ship in 24hrs or less.

Sigh hhhh.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on April 11, 2017, 11:24:58 pm
He's legitimate, though some have reported that stuff occasionally ships late. It seems like yours fell into one of those times.

Unfortunately, not all eBay sellers are punctual. It's good that you're prompt with shipping. I always include in my feedback if someone ships promptly, packs well, communicates well, etc., because so many fail at the basics.
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on April 13, 2017, 08:28:02 pm
Well I now have a spare :)

If anyone in the UK wants to buy it then PM me

Aug 2013 cal v217 firmware. Looks to be in spec compared with my DMMCheck/Keithley 2015 but I can't do an exhaustive calibration check.

£200 if anyone wants it - that's cheaper than buying off nmori87-us which comes to about £237 after all charges and fees, even if you offer him $200.
I bought this one from grumpydoc, it arrive today and works perfectly.
What a great deal, thanks!

Title: Re: Bunch of keysight U1252B meters around
Post by: caa028 on April 14, 2017, 08:38:49 pm
Just got one from nmori87-us - Agilent branded, calibration from June 2012, f/w 217. Everything seems to be brand new and working fine.

What is the recommendation for the data cable/adapter (IR-USB or IR-BT)?

Thank you!
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on April 14, 2017, 10:53:53 pm
Just got one from nmori87-us - Agilent branded, calibration from June 2012, f/w 217. Everything seems to be brand new and working fine.

What is the recommendation for the data cable/adapter (IR-USB or IR-BT)?

Thank you!
I am planning to buy data cable/adapter that Keysight has on its website for this dmm.
Is there some other option?
Title: Re: Bunch of keysight U1252B meters around
Post by: caa028 on April 15, 2017, 02:33:00 pm
There are at least 3 options: U1117A IR-BT at $100, U1177A IR-BT at $50 and U1173B IR-USB at $33. I wonder, what is a better/future proof option not relying on outdated USB drivers, obsolete s/w, etc... preferably with opensource support.
Title: Re: Bunch of keysight U1252B meters around
Post by: caa028 on April 15, 2017, 02:58:57 pm
Found my answers (about U1173A/B and U1177A) on sigrok website.
 - U1173A has Prolific PL2303HX inside;
 - U1173B - Prolific PL2303TA;
 - U1177A - CSR BC417...
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on April 15, 2017, 03:02:33 pm
I use U1117A with U1252B, the range is quite good and the BT signal is really strong even across few rooms with concrete walls.

Used Keysight's provided apps on Android and the prog for Windows ran on laptop Win7 without any problem.

All this time uses Eneloop AAAs without problem and battery life is quite good I should say.

Friend has U1177A and complaining the BT signal is not strong enough and really want to switch to U1117A after trying with mine.

The U1177A's BT is only rated for 10 meters range, while U1117A is at 100 meters, that is 10 times more.
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on April 15, 2017, 03:25:46 pm
I have just ordered :

4 x U1117A
1 x U1115A

This way I can look at 4 meters at the same time
Funnily, the Adroid and iOS apps can only handle 3 instruments at the same time.

Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on April 15, 2017, 03:38:08 pm
Funnily, the Adroid and iOS apps can only handle 3 meters at the same time.

If my memory serves me well, last time my U1117A was used at friend's laptop running Win 7 with a USB BT adapter if I'm not mistaken, and it was across 2 rooms without complain.

Didn't aware the 3 meters limitation on smartphone, as all this time when I used on my Android phone, it was only few meters within line of sight and in the same room, never tried that further. A note to self for testing that next time, thanks.


Edit : Ignore this post, it was a misunderstanding ...  :-DD
Title: Re: Bunch of keysight U1252B meters around
Post by: 2N3055 on April 15, 2017, 03:59:43 pm
LOL he meant 3 and 4 instruments (multimeters), not the distance.. He wasn't very clear though...
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on April 15, 2017, 04:10:22 pm
LOL he meant 3 and 4 instruments (multimeters), not the distance.. He wasn't very clear though...

 :palm: :-DD
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on April 15, 2017, 04:52:36 pm
LOL he meant 3 and 4 instruments (multimeters), not the distance.. He wasn't very clear though...

 :palm: :-DD
Reading that again, it is pretty funny.
Corrected that sentence.
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on April 15, 2017, 05:16:02 pm
I recently picked up an 1177A for $29 at Fry's.  For that price I can live with the short BT range. I'm most likely to use it with a laptop for data logging, etc.     I wish it worked with IOS though. :(  I do have an old android phone I can use it with.
Title: Re: Bunch of keysight U1252B meters around
Post by: dimkasta on April 15, 2017, 07:10:26 pm
Any buyers from EU?
Are you guys paying for GSP?
I don't really need one but look how orange it is :)

Sent from my HUAWEI NXT-L29 using Tapatalk

Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on April 15, 2017, 07:48:58 pm
I don't really need one but look how orange it is :)

Well, its a clear sign you've been infected by these "orange" colored thingy, next, its just the matter of time the "yellow" one will arrive too.  Welcome to ... ->  TEA (https://www.eevblog.com/forum/chat/test-equipment-anonymous-(tea)-group-therapy-thread/) <- ...  >:D
Title: Re: Bunch of keysight U1252B meters around
Post by: Heffa on April 15, 2017, 07:50:31 pm
Any buyers from EU?
Are you guys paying for GSP?
Yes, Sweden here. I had to pay for the GSP, which really sucks - way more expensive than other shipping, much slower & zero chance of slipping through without having to pay for customs  :P
Title: Re: Bunch of keysight U1252B meters around
Post by: dimkasta on April 15, 2017, 08:15:57 pm
Yes, Sweden here. I had to pay for the GSP, which really sucks - way more expensive than other shipping, much slower & zero chance of slipping through without having to pay for customs  [emoji14]

Isn t it optional? And doesn't it include customs?
Title: Re: Bunch of keysight U1252B meters around
Post by: Heffa on April 15, 2017, 08:42:38 pm
Isn t it optional? And doesn't it include customs?
It was the only shipping alternative for me as far as I could see... and customs isn't included, but is (automatically) added on top of shipping & handling at checkout  :(
Title: Re: Bunch of keysight U1252B meters around
Post by: caa028 on April 15, 2017, 11:50:32 pm
Thanks to mtdoc, I've just picked-up a U1177A at my local Fry's for $29. I don't have any apple devices - if it works with Android/Linux, it's all I need.

While at Fry's I've noticed some ads for Keysight DMMs... they are clearing U1253B, U1242B and U1273A.
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on April 16, 2017, 05:18:00 am
While at Fry's I've noticed some ads for Keysight DMMs... they are clearing U1253B, U1242B and U1273A.
Got prices?
Title: Re: Bunch of keysight U1252B meters around
Post by: caa028 on April 16, 2017, 03:47:03 pm
Didn't bother writing the prices down while at the store... Fry's website shows U1253B at $275, U1242B at $135 and U1273A at $241.
Title: Re: Bunch of keysight U1252B meters around
Post by: electrolust on April 17, 2017, 06:51:12 am
While at Fry's I've noticed some ads for Keysight DMMs... they are clearing U1253B, U1242B and U1273A.
Got prices?

They are clearing all keysight, incl. scopes.  50%.  There's a thread about it in buy/sell.  You have to pick up in person.  Oh and the website is atrocious.  Anyway I also got an 1177A.
Title: Re: Bunch of keysight U1252B meters around
Post by: Heffa on April 20, 2017, 08:51:56 am
I received my U1252B yesterday, 20 days to Sweden with the eBay Global Shipping program...

My meter was calibrated June 2012, and the battery was of course dead.

Anyway, i am very satisfied with my buy so far  :-DMM
Title: Re: Bunch of keysight U1252B meters around
Post by: Metermeister on April 30, 2017, 11:42:12 pm
Looks like they are all gone....Kudos to those who took the leap of faith and have an awesome multimeter for little money..myself included!
This was definately a great albeit rare deal!
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on May 01, 2017, 01:10:50 am
I find it hard to believe they are gone, and if so, I wish I had bought another.  It's a great meter for the money.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on May 01, 2017, 02:58:36 am
Last I heard, he had lots of meters. So, probably not gone just yet. However, Jerry, you might want to get one this time around. I don't know how long they'll last.
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on May 01, 2017, 10:17:02 am
My second U1252B unit arrived from the USA in perfect condition.

And the Keysight IR to bluetooth interface arrived from the German distributor.
I am kind of amazed how good the free software works on the iPad with up to three DMM's at the time.


Thanks for the great suggestion, to get one of these handhelds.

Title: Re: Bunch of keysight U1252B meters around
Post by: WackyGerman on May 01, 2017, 10:25:36 am
My second U1252B unit arrived from the USA in perfect condition.

And the Keysight IR to bluetooth interface arrived from the German distributor.
I am kind of amazed how good the free software works on the iPad with up to three DMM's at the time.


Thanks for the great suggestion, to get one of these handhelds.

It also really works well on a windows pc . I downloaded , installed and started it . No issues .  :-+ :-+ :-+ :-+ :-+ keysight
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on May 01, 2017, 10:37:32 am

It also really works well on a windows pc . I downloaded , installed and started it . No issues .  :-+ :-+ :-+ :-+ :-+ keysight
I have not even tried it on a windows PC

Here are some screen shots of the iPad app
Especially the fact, that you can use math to combine 3 DMMs to a fourth measurement is a really great feature.
And it works so perfectly.

Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on May 01, 2017, 10:42:43 am
And these are the possible math operators in the iPad app.
Title: Re: Bunch of keysight U1252B meters around
Post by: WackyGerman on May 01, 2017, 11:06:39 am
The same with android phone  ;D . But not perfectly . The decimal point in the logging diagram is not correct . It shows 2.3345 kV instead of 233.45 V  ;D
Title: Re: Bunch of keysight U1252B meters around
Post by: Kuro on May 01, 2017, 12:17:46 pm
Hello folks - my 2 units Agilent U1252B have arrived yesterday - everything is OK - properly shipped.
The units have calibration documents from mid 2012 - one of the Powerex NiMH 9V rechargeable batteries was dead - both have been replaced - I would recommend this seller.

Did it pass through customs or does eBay have a way around that with their global shipping thing? Did you pay a lot in duties and taxes?
Title: Re: Bunch of keysight U1252B meters around
Post by: FlyingHacker on May 01, 2017, 05:58:33 pm
So these iPad/phone apps are connected using the U1117A, right? Is that all that is needed in addition to the meter? How does it receive multiple meters at the same time? Do you have to aim IR ports at the U1117A?

Oh, it looks like you need one U1117A per meter??
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on May 01, 2017, 06:05:07 pm
Yes, one interface per meter. If you're using a PC, you can also use the IR-to-USB cable.
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on May 01, 2017, 06:08:30 pm
So these iPad/phone apps are connected using the U1117A, right?

Yes


Is that all that is needed in addition to the meter?

Yes


How does it receive multiple meters at the same time?

Through Bluetooth "wireless" connections


Do you have to aim IR ports at the U1117A?

Aim ? No, you just snap in the BT dongle at the back of the meter like this ..

(https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/?action=dlattach;attach=308493;image)


Oh, it looks like you need one U1117A per meter??

Yes, each meter need it's own U1117A or U1177A.
Title: Re: Bunch of keysight U1252B meters around
Post by: Metermeister on May 03, 2017, 02:50:46 pm
No..all units are sold. EBay link is gone. There is no more left. :box:
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on May 03, 2017, 05:59:22 pm
The eBay listing has gone away multiple times before. So, that's just circumstantial.

I just sent a message to get a definitive answer.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on May 03, 2017, 06:32:09 pm
They're not gone yet. It's just a delay getting a new listing online. So, if you want one (or another one), just wait for the listing to re-appear.
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on May 03, 2017, 06:48:54 pm
They're not gone yet. It's just a delay getting a new listing online. So, if you want one (or another one), just wait for the listing to re-appear.

Oh damn!  You mean the temptation to buy a second one is going to continue.  When will this torture end? :-[
Title: Re: Bunch of keysight U1252B meters around
Post by: gnavigator1007 on May 03, 2017, 06:52:19 pm
Thanks bitseeker! Not sure why I dragged my feet so much pulling the trigger on one or two of these. Not going to miss out this time.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on May 03, 2017, 07:29:19 pm
Oh damn!  You mean the temptation to buy a second one is going to continue.  When will this torture end? :-[

Hmm, let me see: When they run out or when you get your second, whichever comes first. It's TEA time! ;D

Thanks bitseeker! Not sure why I dragged my feet so much pulling the trigger on one or two of these. Not going to miss out this time.

Sure thing. Enjoy!


Disclaimer: I'm not the seller, nor affiliated, just a fellow customer on this wild ride.
Title: Re: Bunch of keysight U1252B meters around
Post by: Metermeister on May 03, 2017, 10:14:07 pm
Interesting last week he told me he was down to his last 10 units and once gone they were gone...
I guess never say never...
Title: Re: Bunch of keysight U1252B meters around
Post by: BU508A on May 04, 2017, 01:14:02 pm
They are back again.
http://www.ebay.com/itm/292105636056 (http://www.ebay.com/itm/292105636056)
Title: Re: Bunch of keysight U1252B meters around
Post by: TimFox on May 04, 2017, 08:05:56 pm
But now it's gone again--listing terminated by seller.
Title: Re: Bunch of keysight U1252B meters around
Post by: hendorog on May 12, 2017, 06:45:11 am
aaaaand they are back again

http://www.ebay.com/itm/292114412374 (http://www.ebay.com/itm/292114412374)
Title: Re: Bunch of keysight U1252B meters around
Post by: coromonadalix on May 12, 2017, 09:57:09 am
I love the : new old stock digital multi meter description  loll
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on May 12, 2017, 06:23:25 pm
Yeah, more accurate description now.
Title: Re: Bunch of keysight U1252B meters around
Post by: usagi on May 12, 2017, 08:48:17 pm
fantastic meter for a phenomenal price. just the thing to feed one's GAS.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on May 12, 2017, 08:54:02 pm
Yup. Get 'em while you can. Don't have GAS? Then, just get one. :-DD
Title: Re: Bunch of keysight U1252B meters around
Post by: jpb on May 12, 2017, 09:28:20 pm
These are tempting, but in the UK the price comes to around £240 presumably without warranty and can get new-old-stock Gossen Metrahit Xtra for just under £300 with warranty from Test Tools or get an 87 V off e-bay for similar prices (£240 for "new" just doing a quick scan) so it is not a no-brainer.
The 50000 count is nice but then I have three bench meters for high resolution measurements (2 6.5 digit and 1 5.5 digit).
I'll keep dithering until the opportunity is gone, but I don't really need another meter I just want one!
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on May 12, 2017, 09:39:13 pm
I'll keep dithering until the opportunity is gone, but I don't really need another meter I just want one!

That's one way to fight GAS...until the next opportunity comes along.

Seriously, though, it may not be a good deal to all locations.
Title: Re: Bunch of keysight U1252B meters around
Post by: hli on May 15, 2017, 01:49:03 pm
I got mine on Thursday. Calibration data was in 2013, but it seems its not in spec anymore. I'm using a home-made multi-reference setup for checking (as I do with my other DMMs too), and I get different values depending on input polarity:
Even assuming my refs are not exactly on the exact voltages (my other DMMs seem agree on 2.496 and 4.994V for these two ranges) the U1252B is out more than it should. And I would expect to be the readings to be the same regardless of input polarity. Is there any way to calibrate / change that zero point.?
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on May 15, 2017, 11:00:25 pm
Well I have just joined the Orange Multimeter club :)

Seller accepted $200 offer and the exchange rate £1 = $1.25 so not too bad really.

Now to see how long it takes to arrive :)

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on May 16, 2017, 12:22:11 am
Welcome to the club, Fraser. :-DMM
Title: Re: Bunch of keysight U1252B meters around
Post by: coromonadalix on May 16, 2017, 12:52:58 am
Dont give an leg and arm for a Gossen Metrahit like i did,    loll
Title: Re: Bunch of keysight U1252B meters around
Post by: mstck on May 16, 2017, 03:37:49 am
Has anyone replaced the battery with a Lithium Ion rechargeable?  If so, what has the performance been like? I appreciate that you would have to use an external charger  for the Li battery. After several charge/discharge  cycles, the supplied battery for my unit  still completely  discharges in a few weeks.  Looking for a replacement.
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on May 16, 2017, 03:57:56 am
I had a GAS attack and ordered a second one.  Now I'll wait for a good deal on a second U1177a so I can log power, etc... :)
Title: Re: Bunch of keysight U1252B meters around
Post by: hli on May 16, 2017, 08:45:33 pm
  • This phenomena can happen if your 9V battery is almost empty
  • In the manual U1251-90036.PDF you can find procedure to calibrate in chapter 6 - search Keysight online to retrieve the manual.
Both tips were indeed correct.
Although I fully charged the battery when I got the meter (iot was at about 60% or so, and it took like 30 minutes), it was now at 20%, and did not even fully charge after two full runs over 220 minutes. With a fresh 9V battery the difference drops about 1/3rd - better, but still not good. Shorting the inputs reads about 30mV still.
Since I don't have any really accurate voltage source (esp. not at the voltages required for full calibration) I cheated a little bit: I did only the first step of the cailibration for DC volts and DC milli volts, which is just a shorted input. After that I exited the calibration mode, which saved the new zero point. Now thereading are consistent across polarities, and the measurements are well within spec.

Many thanks!

hli
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on May 16, 2017, 09:04:30 pm
Bought the U1177A Bluetooth adapter for my meter .... it will be my first and only wireless logging multimeter  :)

Paid £37.55 delivered for my U1177A. Best price I could find in the UK. The USB cable was £32 so it was an easy decision to go with the BT adapter.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: aargee on May 17, 2017, 02:05:40 am
Does the U1177A have a USB connection or do you need Bluetooth connectivity to use on a PC?
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on May 17, 2017, 03:23:10 am
Does the U1177A have a USB connection or do you need Bluetooth connectivity to use on a PC?

No USB, only thru BT.

For common pc or laptop, you need to have BT USB dongle, but they're dirt cheap anyway.
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on May 17, 2017, 04:32:12 am
I was considering hacking my U1177A when it arrives to access the IR transceiver so that a USB bridge chip may be connected to it. Then again, the BT solution provides wireless convenience so I will see how I get on with it before doing any hacking :)

From what I have read on the datasheets for the 1117A and 1177A, only the 1117A can communicate with an iOS device. That struck me as quite odd as it is just a IR serial to BT converter. Anyone know why an iOS device would not be able to talk to the 1177A via the BT link ? Put me out of my misery and explain it to me please :)

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on May 17, 2017, 07:40:40 am
From what I have read on the datasheets for the 1117A and 1177A, only the 1117A can communicate with an iOS device. That struck me as quite odd as it is just a IR serial to BT converter. Anyone know why an iOS device would not be able to talk to the 1177A via the BT link ? Put me out of my misery and explain it to me please :)

Fraser

I have three 1177A U1117A BT adapters by now and they are working perfectly alright with iOS 8 and 9 and 10
(Typo fixed)

Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on May 17, 2017, 09:00:21 am
Thanks HighVoltage.

Looks like some Marketing bull or a mistake then. The 1117A brochure has a specs comparison with the 1177A and shows the 1177A as Android only,  with the 1117A being Android and iOS. I thought that sounded a bit unlikely.

Many thanks for confirming the situation for me :)

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on May 17, 2017, 10:00:09 am
Ooops
Sorry, that was a typo.

I have three of the Keysight U1117A Bluetooth/ IR-Adapter and they work perfectly with iOS 8,9,10
No experience on my side with the U1177A

I paid 113 euro each for the U1117A BT adapters minus a little discount for the distributor.


Title: U1252B vs 87 ?
Post by: Geoff_S on May 17, 2017, 11:05:32 am
So there seems to be a lot to like about these U1252B's vs the ole standard Fluke 87V.  I'm thinking about getting one to replace my 87V.  But what are the downsides - shorter battery life, less rugged, anything else ??
Title: Re: U1252B vs 87 ?
Post by: BravoV on May 17, 2017, 11:26:16 am
So there seems to be a lot to like about these U1252B's vs the ole standard Fluke 87V.  I'm thinking about getting one to replace my 87V.  But what are the downsides - shorter battery life, less rugged, anything else ??

Few personal words, so take it with grain of salt.

Own both, spec wise, U1252B has more bell & whistles and probably more suitable for low voltage electronics like at the bench, while 87V is more on electrician's side, subjective of course.

Physically, may be its just me, the U1252B's plastic feels a bit flimsy compared to 87V that feels solid and nice, its hard to explain, you have to feel it in your palm to get it.

Also 87V has detachable rubber jacket that imo its much-much better rubber/silicon material, while the U1252B's bumper rubber is not detachable and also abit stiff and feels cheap.
Title: Re: U1252B vs 87 ?
Post by: orin on May 17, 2017, 04:32:35 pm
So there seems to be a lot to like about these U1252B's vs the ole standard Fluke 87V.  I'm thinking about getting one to replace my 87V.  But what are the downsides - shorter battery life, less rugged, anything else ??

Main disadvantages:

Continuity tester on the U1252B is terrible compared to the Fluke - even with Fluke probes (I tried).

Having to recharge the battery.


At the same price as an 87V, it wouldn't be my first choice.  At the current price, it makes a good backup to the Fluke.

When less accuracy is required, I actually prefer my old Fluke 111 due to its faster response.  Both the bigger meters take longer to auto-range.

Title: Re: U1252B vs 87 ?
Post by: grumpydoc on May 17, 2017, 04:42:42 pm
Continuity tester on the U1252B is terrible compared to the Fluke - even with Fluke probes (I tried).
Turn off auto ranging & leave it on the \$ 500 \Omega \$ range
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on May 17, 2017, 04:57:01 pm
I have yet to receive my U1252B but some of my simple thoughts on the meter purchase

When it comes to multimeters I am a simple soul who was brought up on basic decent quality digital Multimeters from the likes of Beckman and analogue multimeters from AVO and Sanwa. I still know my way around the inside and outside of an AVO 8  ;D

I went through a stage of buying many multimeters, I still do not truly know why.... shiny object syndrome I suspect  ;D Amongst my 'hoard' I have everything from cheap UNI-T handhelds through to quality Wavetek, FLUKE, AVO, Metrix and Avantest multimeters. Some are handhelds, others are bench type.  I have the obligitory super simple wallet types and probe types from Wavetek in case of need as well. Great for a portable kit but not the most versatile of instruments !

I am a RF Tech by trade but my 'thing' is thermal camera use and repair. If I am honest, even a simple digital multimeter will suffice when doing repairs. Super accuracy is not normally an issue when you have no schematics and values against which to reference  ;D My lab is more maintenance than R&D station.

I bought a FLUKE 87 III soon after joining this forum as I appreciated Dave's  comments on having at least one really nice quality multimeter with a decent continuity response time. I paid £120 for an 'as new' 87 III and I love it. It is my go-to multimeter and I use it all the time.  I truly have no 'need' for any other multimeters and so I shall rehome my large collection of unused meters soon. I have amazing FLUKE and Advantest Bench multimeters that claim great accuracy.... but I do not truthfully need such levels of accuracy in my daily work. They are nice to look at though  ;D

I recently purchased some Keysight U5855A thermal cameras and when searching for Keysight on the forum found this thread. I have never been taht sure about Agilent multimeters and would admit to sitting in the FLUKE fan club as a rule. On this occasion, however, the contents of this thread and teh U1252B's ability to be wirelessly linked to a computer or tablet appealed. I have logging multimeters but they are cheap and nasty units with RS232/USB cable connectivity.The U1252B would blow such cheapo meters away me thinks. The price of these NOS meters was right as well. A new FLUKE is hard for me to justify as I have the, still great condition, 87 III. The U1252B offers me additional capabilities beyond those of the 87 III. For that reason I bout one, plus the optional IR BT interface. I do not think I will be disappointed somehow.

I will likely reduce my multimeter collection to the FLUKE 87 III, Agilent U1252B, a couple of AVO and ISO-Tech high end multimeters and a sprinkling of probe/wallet Wavetek meters. The rest can serve new owners. This purchase will likely lead to the rationalisation of my crazy stick of new and unused multimeters that I have accrued over the years  :D Their sale may even pay for the new U1252B  :-+

My sincere thanks to all who have participated in this great thread, and especially the OP for starting it  :-+

Fraser
Title: Re: U1252B vs 87 ?
Post by: tooki on May 17, 2017, 05:38:29 pm
So there seems to be a lot to like about these U1252B's vs the ole standard Fluke 87V.  I'm thinking about getting one to replace my 87V.  But what are the downsides - shorter battery life, less rugged, anything else ??
I think that move would be frustrating.

Above all, autoranging is slow. Much slower than the 87V, and infinitely slower than my bench meter (K2015).

Turn off auto ranging & leave it on the \$ 500 \Omega \$ range
Even manually ranged, using gold ProbeMaster probes, it's still absurdly slow. Absolutely useless for catching transient shorts, as well as for finding pins by dragging the probe across a row quickly. It has to be the worst continuity I've ever seen or used.

On the positive side, it's accurate, has wider measurement range than most meters (measures down to 1pF resolution), has a great LCD, data logging, etc.

In a nutshell, it makes a great addition to my meters, but I'd be hesitant to replace another high-quality meter with it.
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on May 17, 2017, 06:44:23 pm
I find the U252B much more enjoyable to use compared to my Fluke 87V.  It's size, screen visibility and features I find more appealing than the Fluke.  It does have it's weak points but overall I prefer it.   But it really is best kept on the electronics bench since it is surely no where near as rugged and durable as the Fluke. Also, I'm betting that the Fluke will hold its accuracy better over time.  For that reason alone, I'll keep and continue to use the 87V. I expect it will be passed down to my kids and then to grandkids..

Looks like some Marketing bull or a mistake then. The 1117A brochure has a specs comparison with the 1177A and shows the 1177A as Android only,  with the 1117A being Android and iOS. I thought that sounded a bit unlikely.

Keep in mind that the 1177A does work very well with Windows as well.  I have mostly iOS devices but just can justify the much higher price for an 1117A just for that use. I happen to have a couple of outdated/unused Android devices I can use but a cheap Android phone or tablet dedicated for that use could also be purchased for the price difference.
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on May 17, 2017, 09:46:25 pm
I just received my second one of these meters. Unfortunately this one appears to be defective. AC voltage readings are wildly incorrect. I've initiated a return or exchange on eBay.

FWIW, the first one of these meters I purchased several months ago continues to perform flawlessly.
Title: Re: Bunch of keysight U1252B meters around
Post by: -jeffB on May 18, 2017, 02:14:10 am
I apparently missed this batch by a few minutes.  :( I was getting ready to arrange my payment method when I got notification that it was no longer available, about half an hour ago. Up until the last minute, the auction still showed "more than 10 available".
Title: Re: Bunch of keysight U1252B meters around
Post by: hendorog on May 18, 2017, 02:57:04 am
I apparently missed this batch by a few minutes.  :( I was getting ready to arrange my payment method when I got notification that it was no longer available, about half an hour ago. Up until the last minute, the auction still showed "more than 10 available".

Looks like it's been pulled, so maybe will return.

I got a couple of these from the previous batch for $190. Shame the exchange rate isn't what it used to be.
I put one of mine up on www.trademe.co.nz (http://www.trademe.co.nz) (local auction site). It's currently sitting well below what it cost and is past reserve - so someone (else) might get lucky...

Ordered an 1177A yesterday from RS for the one I'm keeping, and it arrived this morning.
Very simple to setup on Android and PC (ignoring the huge download required of course)
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on May 18, 2017, 06:25:56 am
My 1177A BT adapter arrived from Rapid(UK) a few minutes ago. Now I just need the meter  :)

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on May 18, 2017, 04:01:31 pm
In case anyone is interested, I attach the FCC internal pictures of the U1117A IR BT module (2AC-WAU1117A )

Interestingly the FCC ID of 2AC-WAU1177A comes up as not found on the FCC database. A bit weird as it should be there.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on May 19, 2017, 07:45:24 am
So, they are using some kind of OEM BT module on the U1117A?
May be that module has a different FCC release number?
Title: Re: U1252B vs 87 ?
Post by: FlyingHacker on May 21, 2017, 03:24:10 am
Continuity tester on the U1252B is terrible compared to the Fluke - even with Fluke probes (I tried).
Turn off auto ranging & leave it on the \$ 500 \Omega \$ range

Yes, better, but no where near as good as a Fluke, or my keithley 2100. Those two will catch anything when you drag your probes across stuff. I found the Keysight was not beeping if I quickly raked the (Probemaster) probes across the pins on a connector I was wiring up. I had to go more slowly.

That said, I would rather use the Keysight than the 87V for any other task. Though I really like bench meters for bench use. no batteries to fuss with, etc.  and my Fluke 8100B Nixie tube bench meter is tough to beat for size and readability of display!
Title: Re: Bunch of keysight U1252B meters around
Post by: richnormand on May 24, 2017, 11:16:45 pm
Well, OK, hmmm, I admit I got one too. Excellent meter for the price.


There has been a few comments in this thread about the Bluetooth attachment and some mention of the IR usb link for the U1252B.

Hope this might be useful for some that have a good  "junk" box to make an IR to USB adapter. I came around this website:
https://www.medo64.com/agir/ (https://www.medo64.com/agir/)

Since it looked like I had most of the components or close equivalents around and I was just putting an order to my pcb maker so I included his board also.
The wooden part is made from 1/4" flooring plywood and it is a friction fit as shown in the photo and is quite secure.

Downloaded the Keysight software and all is good.

I find the "talk" option very useful while under the binocular microscope while probing a circuit as I do not have to remove my eyes from it.

 :)
 
Title: Re: Bunch of keysight U1252B meters around
Post by: bsudbrink on May 30, 2017, 05:16:02 pm
Did anyone else order one of these the last time the lot was up on ebay (around May 16th)?  Do you have yours yet?
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 05, 2017, 02:42:57 am
Heads up, there are more meters coming. nmori told me that he has a few U1252B left and will be listing new-old stock of U1252A and U1253A (i.e., the blue versions). The specs of the A version are almost identical to the B, but the A has higher input impedance and higher frequency sensitivity on AC and AC+DC. The U1252A also includes a carrying case, unlike the U1252B.

Here's a comparison datasheet that has both the A and B series on it in case you're curious: http://manualzz.com/doc/15034034/datasheet-for-u1252b-50000-count-handheld-dmm (http://manualzz.com/doc/15034034/datasheet-for-u1252b-50000-count-handheld-dmm)

He said that the calibrations on the A are from 2013 and earlier.


Updating with links:

 - U1252B (orange, LCD): http://www.ebay.com/itm/292140659554 (http://www.ebay.com/itm/292140659554)

 - U1252A (blue, LCD): http://www.ebay.com/itm/292147737467 (http://www.ebay.com/itm/292147737467)

 - U1253A (blue, OLED): http://www.ebay.com/itm/292147735479 (http://www.ebay.com/itm/292147735479)

Disclaimer: These are not my listings nor inventory. I'm just a fellow purchaser. :-DMM
Title: Re: Bunch of keysight U1252B meters around
Post by: PTR_1275 on June 05, 2017, 05:47:26 am
They're listed here

https://www.ebay.com.au/itm/292140659554 (https://www.ebay.com.au/itm/292140659554)

Looking through the specs, the U1252A model came with the carry case and some extra leads (smt grabbers). I hope the ones he has come with those bits
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 06, 2017, 04:07:05 am
PTR: Note that that listing is for the U1252B. The A versions aren't up yet.

Yes, he said that the U1252A he has comes with the carrying case and the U1253A has extra leads. I don't know if the U1252A has the grabbers that are in the comparison table. I'd assume so, but it'd be best to ask him.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on June 06, 2017, 10:11:54 pm
I see someone is trying to sell one locally on Craig's list for $370USD.  I'll bet it was purchased from ebay. 
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 06, 2017, 10:18:00 pm
I wouldn't be surprised. That's a healthy margin. Then again, I constantly see people selling the free Harbor Freight DMMs on Craigslist for $3 - 20.
Title: Re: Bunch of keysight U1252B meters around
Post by: bsudbrink on June 08, 2017, 01:49:14 am
Mine finally arrived today.  Cal 12/2011.  Oldest I see in this thread.  The whole thing has a slightly "musty basement" smell.  It will air out I'm sure and there is no evidence of water damage on the box but the staples in the quick start guide are very rusted which worries me a little.  Minimal check shows correct operation for AC and DC volts, Ohms and continuity. Battery had 70 percent charge and quickly charged up to full.  In about 20 minutes of fooling around (a good bit with the backlight on) it has discharged to 75 percent.  Serial number MY514...
Title: Re: Bunch of keysight U1252B meters around
Post by: damn_dirty_ape on June 08, 2017, 11:21:27 pm
I just ordered one.  This is going to be the first piece of equipment that cost me over 100 bucks, hopefully it's worth it :)
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 09, 2017, 01:48:28 am
I suppose that depends on what you're using it for and what your expectations are as compared to a meter that's less than $100. For example, if a $20 DMM does everything you need it to, then a $200 one (that was $400+ retail) may not be worth it.
Title: Re: Bunch of keysight U1252B meters around
Post by: damn_dirty_ape on June 09, 2017, 01:57:21 pm
The meter I have no doesn't measure low resistance values, so I'm sure this one will do a lot better.  The spec sheet says it has a resolution of 10 mOhms, I'm not sure if that means it can measure down that far, but if it can do 10ths of an ohm I'll be happy.  The square waveform generator might come in handy as well  :-DMM
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 09, 2017, 04:01:49 pm
The meter I have no doesn't measure low resistance values, so I'm sure this one will do a lot better.  The spec sheet says it has a resolution of 10 mOhms, I'm not sure if that means it can measure down that far, but if it can do 10ths of an ohm I'll be happy.  The square waveform generator might come in handy as well  :-DMM
What do you think resolution means? (Not being flippant, honestly just making sure it means what you think it means.)

Even my $6 eBay cheapie does 1/10 ohms (100mOhm). The U1252 does 10mOhm, i.e. it measures down to 1/100 ohms. So you can measure a resistance from zero up to 510 ohms and see its resistance in 1/100ths of an ohm. Of course, you have to zero out test lead resistance for that to be useful, since test leads can be anywhere from a few mOhm to over an ohm on crappy ones, or if you're using a crappy breadboard to hold the DUT.
Title: Re: Bunch of keysight U1252B meters around
Post by: damn_dirty_ape on June 09, 2017, 04:04:31 pm
I want to be able to measure very low resistances.  I don't have the money for something that does 4 wire, which I think is needed to get good results at really low levels.  Please let me know if I'm wrong about this
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 09, 2017, 04:08:37 pm
I've already answered that question, but I don't think you understood the answer.

What do you consider a "very low resistance"?
Title: Re: Bunch of keysight U1252B meters around
Post by: damn_dirty_ape on June 09, 2017, 04:16:13 pm
My idea of low resistance would be 0.01 ohms.  I know the spec sheet says that is the resolution, but I wasn't sure if there is some kind of floor that it can't get under because it is only two wire.  Really, if I can get  under a couple tenths of an ohm I will be happy.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 09, 2017, 04:20:12 pm
If you want to measure a 0.01 ohm resistor, then this meter won't do it. The potential error of the meter is larger than the thing you want to measure.

If you want to measure a 10 ohm resistor in 0.01 ohm steps, then this meter will do it just fine, provided you don't need to know exactly. (Will it tell you that, for example, one 10 ohm resistor is 0.03 ohms higher resistance than another? Yes. But you won't know the absolute value to anything more than the tolerance of the meter.)


See why I asked you if you understand resolution? Your questions are telling me that you don't. (Not trying to be rude, just to educate.)
Title: Re: Bunch of keysight U1252B meters around
Post by: damn_dirty_ape on June 09, 2017, 04:28:16 pm
Please educate this dumb dirty ape, tooki.  What is the error of this meter?  I read the spec sheet that says 0.05+10 in the 500 ohm range, which should be .05% but I don't get the +10 part.  Can this meter measure 0.1 ohms accurately?
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on June 09, 2017, 04:41:48 pm
Can this meter measure 0.1 ohms accurately?
Not very

Even if it were perfect the resolution is 10milli ohms

That is, 500 ohms is displayed as 500.00 ohms, so the value is displayed in 0.01 ohm steps.

So if you are trying to measure 0.1 ohms it can only do so to a precision of 10% of the value.

The +10 on the precision means that the value displayed is accurate to 0.05% but also +/- 10 counts - i.e the last digit is unreliable.

So, that really means you can only rely on the 500.0 part of the display

Now the precision for your 0.1 ohm resistor is effectively 100% - it could reasonably display anything from 0.0 ohms to 0.2 ohms for that 0.1ohm resistor and still be "in spec"

HTH
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 09, 2017, 04:48:01 pm
Please educate this dumb dirty ape, tooki.  What is the error of this meter?  I read the spec sheet that says 0.05+10 in the 500 ohm range, which should be .05% but I don't get the +10 part.  Can this meter measure 0.1 ohms accurately?
The +10 means ten counts, and the % means % of full scale (for the range). So in the 500 ohm range, that means an error (in either direction) of 0.05% of 500.00, which is 0.25 ohms, plus an error of 10 counts either way. Since on that range, there are two decimal places, this means that on that range, the 10 count error means 0.1 ohm.

So for example, with a device that's exactly 100.00 ohms, the spec says the reading could be anywhere from 99.65 ohms (100-0.25-0.10) to 100.35 ohms (100+0.25+.10) and be within spec. Edit: More experienced folks: Am I correct on this? Or is the % error actually % of the DUT, e.g. 100-0.05-0.10=99.85 ohms through 100+0.05+0.10=100.15 ohms?


I still want you to attempt to explain what you think resolution means. Your final question there is still indicating that you don't.
Title: Re: Bunch of keysight U1252B meters around
Post by: damn_dirty_ape on June 09, 2017, 04:50:39 pm
Thanks for that explanation, both tooki and grump :)

I think resolution is a bit like dynamic range, as in the smallest step that the reading will change by.  I don't think this is related to accuracy, but to the precision of the instrument.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 09, 2017, 04:56:14 pm
Yep, resolution is the size of the steps. So you can't realistically expect to measure things that are only as large as a few of those steps.

That's why I was asking what the "small resistances" are that you want to measure. If you wanna measure 100 ohm resistors, this will work great. If you want to measure 1 ohm resistors, you really need a different tool.


BTW, don't think that 4-wire resistance is prohibitively expensive; a Keithley 197, for example, can be had for around a hundred bucks.
Title: Re: Bunch of keysight U1252B meters around
Post by: damn_dirty_ape on June 09, 2017, 05:06:36 pm
Nice, thanks for the suggestion. 

The way I understand it now, this meter can measure to about +- 0.25 ohms, which should be great for me.  Plus data logging, signal generator, I'm excited :)  Thanks for the help!
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on June 09, 2017, 05:07:24 pm
The +10 means ten counts, and the % means % of full scale (for the range).
Nearly - the 0.05% is of the reading, not full scale.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 09, 2017, 05:11:32 pm
The +10 means ten counts, and the % means % of full scale (for the range).
Nearly - the 0.05% is of the reading, not full scale.
Heh, thanks! You wrote this literally as I was editing my post to ask this very question!!!!
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 10, 2017, 08:49:51 pm
Mine finally arrived today.  Cal 12/2011.  Oldest I see in this thread.  The whole thing has a slightly "musty basement" smell.
Same here.  Same cal date; same musty smell.  It was between the U1252B and the Brymen 869s -- for roughly the same price.  I wanted the 20MHz frequency counter in the U1252B.  If it were not for that one feature, I'd have gone for the Brymen.

Now I'm just waiting for the next batch of EEVBlog DMMs to show up on Amazon.

:-DMM
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on June 10, 2017, 09:19:00 pm
My meter just arrived :)

It is in new condition with no musty smell or evidence of exposure to damp.

Calibrated in 2012.

The supplied battery is being changed for a nice fresh Varta 'low self discharge rate' Ni-Mh replacement

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 11, 2017, 12:40:47 am
The frequency counter on this U1252B is very accurate.  I'm testing it with my SDG2000X and it's giving me perfect results up to 20MHz.  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on June 11, 2017, 02:27:27 pm
My U1252B has passed its testing today without any issues. The original Powerex '9V' battery was reading only 2.6V upon arrival. No surprises there , and due to the long storage period. When being charged it multi-tripped the delta V monitoring smart charger at between 10mAh and 25mAh capacity ! I now have the battery charging very gently on a CC lab power supply to bring all the cells up to full charge. I will check the batteries cell balance and capacity on my analyser later. I have fitted the nice new and fresh LSD VARTA 8.4V battery and that will remain in the meter.

In case any readers are unaware..... the Powerex is a 7.2V 300mAh conventional Ni-Mh battery. It is not a low self discharge type. This means that it will discharge over a period of months, even if not used. I purchased a VARTA (Made in Japan) 8.4V 200mAh Low self Discharge (LSD) battery. I understand the cells in this VARTA branded battery are Sanyo Eneloops.
Make sure you buy one made in Japan and not China though as the Chinese versions do not use Sanyo Eneloop cells.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: mark03 on June 11, 2017, 07:22:18 pm
My U1252B arrived yesterday with a cal date of 9/2011 (a new record?) and very strong musty/moldy smell.  I replaced the battery with a new Powerex 8.4V/300mAh and turned it on.  First impression, wow, the low digits really zoom around---I'm only used to cheap slow meters.

Unfortunately there seems to be a problem.  Measuring the old Powerex battery, I got 37 mV.  Strange, let's try a fresh AA cell.  Also 37 mV.  Switching to manual ranging, I get 3.7 mV on a low range, 37 mV on the next, 370 mV on the next, then approximately correct readings (1.5x V) on the highest ranges.  :palm:

It was easy to open the case and examine the PCB so I did, and despite the strong odor I cannot see any obvious signs of water damage or residue.

Anyone know if these symptoms are indicative of a bad calibration, or something more serious?
Title: Re: Bunch of keysight U1252B meters around
Post by: rattnallen on June 11, 2017, 08:24:57 pm
My U1252B seems to work ok except in the MOhm ranges.

When testing with 5*1MOhm in series I get 4.0155MOhm in the 5MOhm range, 8.767MOhm in the 51MOhm range and 8.77MOhm int the 510MOhm range  :(
When checking whitn another DMM I get 4.92MOhm.

Calibrated 06/2013.
Title: Re: Bunch of keysight U1252B meters around
Post by: ocw on June 11, 2017, 09:26:43 pm
Quote
My U1252B seems to work ok except in the MOhm ranges.

My U1252B measured a 1.000M 0.01% resistor as 0.99990M (-0.01%).  It measured a 100.0M 0.5% resistor as 100.04M (+0.04%).  I measured the DC voltage, AC voltage and resistance accuracy of my U1252 (Keysight calibrated 05Feb2015) as:

  VDC           % Error
24.993 mV     0.0104%
50.053         0.0014
74.97           0.0004
100.02         -0.0028
249.82         -0.0144
500.33         -0.0094
0.7496 V        0.0185
0.9999         -0.0008
1.2504         0.0335
1.8002         0.0133
2.0480         0.0005   
2.4999         0.0032
2.9978         0.0090
3.3003         0.0067
4.0961         0.0039   
5.0001         0.0012
7.494           -0.0081
9.998           -0.0108

  VAC          % Error
3.5380 V         0.070%
Frequency Accuracy:  -91 PPM   
   
  OHMS         % Error
0.21             5.0000%
0.99             -1.0000
5.01             0.2000
10.00           0.0000
49.99           -0.0200
99.98           -0.0200
249.91           -0.0360
349.94           -0.0171
499.9           -0.0200
1,000.0           0.0000
2,499.9           -0.0040
5,000.0           0.0000
8,999            -0.0111
9,895            -0.0505
10,001           0.0100   
49,890           -0.0200
100,010           0.0100
0.99990M        -0.0100
100.04M           0.040

Not having a feedback mode for current measurement, those readings had significant errors when the effects of its 101, 2.3 and 0.045 shunt resistors where not taken into account.  The corrected readings met its specifications.  I think we now have the parts available to add the feedback mode in meters without having a huge increase in the complete meter price.

Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 12, 2017, 02:07:52 am
Updated my previous post with links to the "A" series listings.

https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/msg1225433/#msg1225433 (https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/msg1225433/#msg1225433)

Disclaimer: These are not my listings nor inventory. I'm just a fellow purchaser. :-DMM
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on June 12, 2017, 02:58:13 am
My U1252B seems to work ok except in the MOhm ranges.

When testing with 5*1MOhm in series I get 4.0155MOhm in the 5MOhm range, 8.767MOhm in the 51MOhm range and 8.77MOhm int the 510MOhm range  :(
When checking whitn another DMM I get 4.92MOhm.

Calibrated 06/2013.

I would try going through the calibration procedure which can be found in the manual (available online). It's easy to do. My second meter was slighly out of spec so I did the calibration and it brought it back into spec. You will need another reliable DMM, stable power supply and resistors to produce the required voltage and resistor values.
Title: Re: Bunch of keysight U1252B meters around
Post by: bsudbrink on June 12, 2017, 04:17:26 pm
My U1252B arrived yesterday with a cal date of 9/2011 (a new record?) and very strong musty/moldy smell.
On mine, that seems to have cleared out of the meter and leads pretty quickly.  Were the staples on your quick start guide rusted?

I replaced the battery with a new Powerex 8.4V/300mAh and turned it on.
After a couple of charge/discharge cycles, the battery supplied with mine seems to be behaving itself.

First impression, wow, the low digits really zoom around---I'm only used to cheap slow meters.
I'll add a "me too".  On the low resistance ranges, I can get the digits "zooming" just by shaking the leads around.

Unfortunately there seems to be a problem.  Measuring the old Powerex battery, I got 37 mV.  Strange, let's try a fresh AA cell.  Also 37 mV.  Switching to manual ranging, I get 3.7 mV on a low range, 37 mV on the next, 370 mV on the next, then approximately correct readings (1.5x V) on the highest ranges.  :palm:
I put a couple of batteries on mine and seemed to get reasonable measurements.  I'll hook it up to my bench supply tonight and test a little more extensively.

It was easy to open the case and examine the PCB so I did, and despite the strong odor I cannot see any obvious signs of water damage or residue.
I haven't opened mine up in case I have to send it back.

I want to add that I got a very nice email from the seller, nmori87-us, indicating that he reads (or is made aware of) this forum and will stand behind these meters if there is a problem.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 13, 2017, 02:26:38 am
I want to add that I got a very nice email from the seller, nmori87-us, indicating that he reads (or is made aware of) this forum and will stand behind these meters if there is a problem.

Good to hear, bsudbrink. I've been conversing with nmori periodically, so he is aware of this thread and our e-community. I'm sure he's sold quite a lot of meters here and does want them to work out for everyone.
Title: Re: Bunch of keysight U1252B meters around
Post by: mark03 on June 13, 2017, 03:39:51 am
My U1252B arrived yesterday with a cal date of 9/2011 (a new record?) and very strong musty/moldy smell.
On mine, that seems to have cleared out of the meter and leads pretty quickly.  Were the staples on your quick start guide rusted?
Yes, very rusted.  I hadn't noticed until just now.

Unfortunately there seems to be a problem.  Measuring the old Powerex battery, I got 37 mV.  Strange, let's try a fresh AA cell.  Also 37 mV.  Switching to manual ranging, I get 3.7 mV on a low range, 37 mV on the next, 370 mV on the next, then approximately correct readings (1.5x V) on the highest ranges.  :palm:
I put a couple of batteries on mine and seemed to get reasonable measurements.  I'll hook it up to my bench supply tonight and test a little more extensively.
Let us know how it performs.  It's encouraging that the seller would take a return if necessary, but I'd really like to avoid that.  I was hoping someone would chime in with knowledge about how the calibration system works.  The way mine is behaving doesn't seem like it could be explained by component drift.  But if the calibration constants are kept in nonvolatile storage, and that were corrupted somehow...?

I don't have the equipment here for even a rough calibration, so I'd rather not go down that route unless there is reason to believe that the errors I'm seeing could originate in the digital domain.  If the root cause is analog in nature, I'd be much less optimistic.
Title: Re: Bunch of keysight U1252B meters around
Post by: bsudbrink on June 13, 2017, 03:41:05 pm
Ok, I put three 1K resistors in series as a load and ran it through its paces.  My supply is a Siglent SPD3303X-E (Yea, yea, I didn't use banana leads!) so I have "resolution" down to 10mV from the supply and 3.333mV in the load.  I got a consistent 4mV disagreement between the 3303 display and the 1252 across the load.  That is for example, the 3303 display said 1.27 and the 1252 said 1.2662 with the last digit "wiggling around".  Like several others in the thread, this is by far the most precise instrument I own and I'm not yet familiar with it, but I assume that the discrepancy is the voltage drop across the wires between the 3303 and the load.  I got expected values inside the load (1/3rd or 2/3rd of the total).  So, all-in-all, it looks like my 1252 is good for DC volts.  Sorry about yours.
Title: Re: Bunch of keysight U1252B meters around
Post by: BMCha on June 15, 2017, 03:10:17 am
I've been thinking about picking one of these up.

As discussed earlier, the current listings have both the 1252A and 1252B. Looking at the posted datasheets the only real difference for the A from the B, other than extra frequency support in the high AC ranges, seems to be the higher input impedance at low voltages.

1) are there any practical issues that would arise from the impedance difference? I'll admit that I'm not too knowledgeable about what that means for the DMM's capabilities.
2) is there anything else I'm missing? If the minor datasheet differences aren't important, it looks like the A might be a good choice -- seems to come with a few extras and despite it's being older I'm getting the impression that the cal dates on the B's are around the same time by now.

Also despite rereading the last few pages I'm having trouble telling whether the current batch of B's is having problems or not (and who knows about the A's). I see that the seller is going to stand behind the products but I'd like to avoid any defect problems if possible. Should I be worried about anything here?
Finally, (hope I'm not asking too many questions here) does the older cal date have any practical consequences for a hobbyist use-case? I like the high count and accuracy figures for these meters, but if they've drifted too far out of spec that's somewhat moot (and I don't have the equipment to do a nice calibration myself). It sounds like most people have been getting good results but the cal dates appear to be sliding backwards as the seller goes through stock.

Thanks!
Title: Re: Bunch of keysight U1252B meters around
Post by: PTR_1275 on June 15, 2017, 06:25:29 am
I just bought a U1177a Bluetooth module for my meter, the instructions are vague but seem simple. Turn on, connect via iPhone or iPad settings (Bluetooth), pair, open app and use it.

However I cannot connect via my iPhone or iPad and am pulling my hair out a bit. My mate can see it with his android phone. Is there anything that I'm missing? Anyone here have the Bluetooth module and had the same issue?
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on June 15, 2017, 07:58:49 am
I just bought a U1177a Bluetooth module for my meter, the instructions are vague but seem simple. Turn on, connect via iPhone or iPad settings (Bluetooth), pair, open app and use it.

However I cannot connect via my iPhone or iPad and am pulling my hair out a bit. My mate can see it with his android phone. Is there anything that I'm missing? Anyone here have the Bluetooth module and had the same issue?

(https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/?action=dlattach;attach=324088;image)
Title: Re: Bunch of keysight U1252B meters around
Post by: PTR_1275 on June 15, 2017, 08:04:22 am
Ahhh crap. I didn't find that in anything I looked at.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 15, 2017, 08:58:33 am
I just bought a U1177a Bluetooth module for my meter, the instructions are vague but seem simple. Turn on, connect via iPhone or iPad settings (Bluetooth), pair, open app and use it.

However I cannot connect via my iPhone or iPad and am pulling my hair out a bit. My mate can see it with his android phone. Is there anything that I'm missing? Anyone here have the Bluetooth module and had the same issue?

(https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/?action=dlattach;attach=324088;image)
How odd, given that iOS has had robust Bluetooth support for a long time, and that both the 1177A and 1117A use the same Bluetooth profile. (It's not that the 1177A uses a weird Bluetooth type, either, it's just BT 2.1.)
Title: Re: Bunch of keysight U1252B meters around
Post by: BravoV on June 15, 2017, 09:08:22 am
How odd, given that iOS has had robust Bluetooth support for a long time, and that both the 1177A and 1117A use the same Bluetooth profile. (It's not that the 1177A uses a weird Bluetooth type, either, it's just BT 2.1.)

I'm guessing its more business decision/reason rather than technical one, cause the 1177A product is quite old, and Keysight probably just doesn't want to re-invest more to develop IOS application for it.

If I'm not mistaken, this 1177A was released when they just acquired the Escort brand and the whole DMM business, re-branded all Escort's meter, and Agilent (before Keysight) was just starting the handheld DMM business.

Remembered this quite well when 1177A was released many-many years ago, IOS was not supported from the beginning.
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on June 15, 2017, 09:34:59 am
I did fall for this a few weeks ago as well and bought a cheap U1177A and was surprised my iPad could not see it.

Now I have a few U1117A and they work perfectly alright. It is really nice to have up to three DMM hooked up via BT to the iPad and have one additional number as math, based on measurements of the three DMM.

Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 15, 2017, 11:13:52 am
How odd, given that iOS has had robust Bluetooth support for a long time, and that both the 1177A and 1117A use the same Bluetooth profile. (It's not that the 1177A uses a weird Bluetooth type, either, it's just BT 2.1.)
What are you smoking? iOS has intentionally crippled BT support.  It does not support SPP without using Apple's MFI chip (the Apple tax chip).
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 15, 2017, 11:44:42 am
How odd, given that iOS has had robust Bluetooth support for a long time, and that both the 1177A and 1117A use the same Bluetooth profile. (It's not that the 1177A uses a weird Bluetooth type, either, it's just BT 2.1.)
What are you smoking? iOS has intentionally crippled BT support.  It does not support SPP without using Apple's MFI chip (the Apple tax chip).
Ok, let's try this using civilized language:

Actually, iOS only supports SPP as part of the MFI program, requiring the addition of an MFI chip from Apple
Oh, I didn't know that. That's lame.

When I said "robust", I was thinking that it's been reliable (like Mac OS X's BT support, and unlike Windows historically). I thought apps could use profiles beyond the ones iOS supports natively, didn't realize that wasn't the case.
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on June 15, 2017, 01:15:33 pm
A-Ha! Now I understand why the 1117A BT module is so expensive when compared to the older1177A that I have. I paid around £35 for mine and do not need iOS support. I own many Android phones and tablets for use in the lab as 'hosts' only. They can be be bought on eBay so cheaply that it makes sense for me to buy a used Android tablet for use with the 1177A. Still cheaper than buying a 1117A and it does not tie up my iPad.

So Apple have effectively locked down their BT like they did their USB accessories.... adding significant additional cost to any product that supports iOS. I did not need a reason to avoid iOS products in the lab, but that sure is a big one for me. I buy great quality used Android phones and tablets for around £30 in the UK. Virtually a disposable host for my FLIR One G2 thermal cameras, Smart universal battery chargers and now my Keysight multimeter :)

I say, buy a cheap 1177A and a cheap used Android device and enjoy both the saving and the added freedom of not needing to use your iOS device for lab work :) Yes I know the 1117A has a longer range...... but my lab is not that large and with distance  the reliability of connection can reduce anyway.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 15, 2017, 01:26:01 pm
As best I can tell, the MFI chips cost about a dollar, so it's not as though its material cost is responsible for the cost differential.
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 15, 2017, 02:35:08 pm
As best I can tell, the MFI chips cost about a dollar, so it's not as though its material cost is responsible for the cost differential.
You are just speculating.

The cost of the chips varies greatly depending on volume -- and many other factors.  The Apple MFI chip cost is not the only material cost associated with MFI support.  I'm not sure what your background is, but I can assure you that there are significant additional costs to product development beyond the chip cost.  I could go into details, but this is not the place for it.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 15, 2017, 05:24:40 pm
As best I can tell, the MFI chips cost about a dollar, so it's not as though its material cost is responsible for the cost differential.
You are just speculating.

The cost of the chips varies greatly depending on volume -- and many other factors.  The Apple MFI chip cost is not the only material cost associated with MFI support.  I'm not sure what your background is, but I can assure you that there are significant additional costs to product development beyond the chip cost.  I could go into details, but this is not the place for it.
Actually I wasn't speculating as such, I was going by the (admittedly unreliable) numbers I found in discussions about it when I was googling the topic.

As for the cost of the chip not being the only factor, that's why I expressly stated that the material cost of the chip isn't responsible. I didn't say anything about the other costs of MFI support.
Title: Re: Bunch of keysight U1252B meters around
Post by: Old Printer on June 15, 2017, 07:11:26 pm
I have become a more serious electronics hobbyist of late and have been assembling a "bench". It would not qualify as a lab by any means. I have TEK 475 & 2225 scopes that both work well, but neither one has been calibrated since the 90's. I have a low cost frequency counter and wave generator. My main "meter" is a yellow RadioShack 2200087 46 range RMS handheld that is probably 20 years old and went for about $65 new. It has the RS232 PC interface if I could find a computer with a 232 port :) My goal or interest is just to learn the fundamentals of analog and digital electronics and build some projects like a bench power supply and microprocessor related circuits and maybe some current & resistance reference type gear. I have a thing about accuracy and like my stuff to be as close to dead on as I can afford, probably over the top. I feel like my next purchase should be along the lines of an accurate DMM. A bench unit would be fine with me, but on the surface this looks like a very good deal with the exception of a few lately showing up a bit off. Not having anyway to check it, I am not sure I would trust it without having it calibrated or at least checked by someone with some known good equipment. I don't know anyone like that so I would have to pay someone to do it, or am I miss reading some of the more recent posts. Thanks for taking the time to read this. Dave
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 15, 2017, 07:54:05 pm
Actually I wasn't speculating as such, I was going by the (admittedly unreliable) numbers I found in discussions about it when I was googling the topic.

As for the cost of the chip not being the only factor, that's why I expressly stated that the material cost of the chip isn't responsible. I didn't say anything about the other costs of MFI support.
Not speculating but presenting "facts" based on unreliable data found on the interwebs, by someone with no clue how Apple's MFI program works?   :bullshit:

I'll leave this here: http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories- (http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories-)

Up until a few years ago, the price was an order of magnitude more that what you quote.  It is certainly a heftier chunk than you seem to want others to believe.  Why?
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on June 15, 2017, 08:22:44 pm
Not speculating but presenting "facts" based on unreliable data found on the interwebs, by someone with no clue how Apple's MFI program works?   :bullshit:

I'll leave this here: http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories- (http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories-)

Up until a few years ago, the price was an order of magnitude more that what you quote.  It is certainly a heftier chunk than you seem to want others to believe.  Why?

What does this have to do with the Keysight Bluetooth Adapter?
Does Keysight have to pay a license fee to Apple for each U1117A adapter they sell in order to have the iPad be able to link to the adapter?

Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 15, 2017, 10:18:45 pm
What does this have to do with the Keysight Bluetooth Adapter?
Does Keysight have to pay a license fee to Apple for each U1117A adapter they sell in order to have the iPad be able to link to the adapter?
Yes they do.
Title: Re: Bunch of keysight U1252B meters around
Post by: hendorog on June 15, 2017, 10:34:20 pm
Actually I wasn't speculating as such, I was going by the (admittedly unreliable) numbers I found in discussions about it when I was googling the topic.

As for the cost of the chip not being the only factor, that's why I expressly stated that the material cost of the chip isn't responsible. I didn't say anything about the other costs of MFI support.
Not speculating but presenting "facts" based on unreliable data found on the interwebs, by someone with no clue how Apple's MFI program works?   :bullshit:

I'll leave this here: http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories- (http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories-)

Up until a few years ago, the price was an order of magnitude more that what you quote.  It is certainly a heftier chunk than you seem to want others to believe.  Why?

Was this really presented as a "fact"?
Quote
"As best I can tell, the MFI chips cost about a dollar"

Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 15, 2017, 11:15:25 pm
Actually I wasn't speculating as such, I was going by the (admittedly unreliable) numbers I found in discussions about it when I was googling the topic.

As for the cost of the chip not being the only factor, that's why I expressly stated that the material cost of the chip isn't responsible. I didn't say anything about the other costs of MFI support.
Not speculating but presenting "facts" based on unreliable data found on the interwebs, by someone with no clue how Apple's MFI program works?   :bullshit:

I'll leave this here: http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories- (http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories-)

Up until a few years ago, the price was an order of magnitude more that what you quote.  It is certainly a heftier chunk than you seem to want others to believe.  Why?
At no point did I claim or pretend to be an authority. Every claim I made was couched in weasel words, rather deliberately, because I am not an authority on this. Never claimed I was, never claimed they were facts. Get off your high horse. Isn't Colorado a state with medical weed? Might wanna take some, calm your nerves a bit...

What does this have to do with the Keysight Bluetooth Adapter?
Does Keysight have to pay a license fee to Apple for each U1117A adapter they sell in order to have the iPad be able to link to the adapter?
It appears so. Probably a couple of dollars per unit. (DISCLAIMER FOR COLORADO.ROB THAT I DON'T KNOW THIS FOR 100% FACT. DON'T TAKE THIS AS FACT. JUST GOING BY ESTIMATES FROM INTERWEBS. NOT GOSPEL. NO WARRANTIES, EXPRESS OR IMPLIED. 'N STUFF.)

 
Was this really presented as a "fact"?
Quote
"As best I can tell, the MFI chips cost about a dollar"
Thank you.
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 16, 2017, 01:12:51 am
:horse:

Doesn't really matter.  iOS users will pay.
 \$\Omega\$
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on June 16, 2017, 01:27:32 am
I say, buy a cheap 1177A and a cheap used Android device and enjoy both the saving and the added freedom of not needing to use your iOS device for lab work :) Yes I know the 1117A has a longer range...... but my lab is not that large and with distance  the reliability of connection can reduce anyway.

Fraser
I think I will do exactly that.  Any suggestions on the tablet? 
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 16, 2017, 02:15:36 am
As discussed earlier, the current listings have both the 1252A and 1252B. Looking at the posted datasheets the only real difference for the A from the B, other than extra frequency support in the high AC ranges, seems to be the higher input impedance at low voltages.

Yep, that's about the gist of it. I haven't looked to see if there are any design issues as a consequence of the differences between the A and B.

Quote
1) are there any practical issues that would arise from the impedance difference? I'll admit that I'm not too knowledgeable about what that means for the DMM's capabilities.

The higher impedance is useful if you'll be measuring circuits that have high impedances. You want the meter's impedance to be much higher than the things you're measuring in order to minimize the meter's effect on the circuit. In general, though, the lower impedance of the B should not be a problem. It's still plenty high. The higher impedance of the A might make it more sensitive to noise, but I haven't heard of any complaints. Some bench multimeters have even higher input impedance.

Quote
2) is there anything else I'm missing? If the minor datasheet differences aren't important, it looks like the A might be a good choice -- seems to come with a few extras and despite it's being older I'm getting the impression that the cal dates on the B's are around the same time by now.

I haven't heard anything specifically about the A models from nmori (no purchases mentioned here yet), so I don't know how they compare to his B models. I quite like the color of the A models, though I got a B one before the A's showed up.

Quote
Also despite rereading the last few pages I'm having trouble telling whether the current batch of B's is having problems or not (and who knows about the A's). I see that the seller is going to stand behind the products but I'd like to avoid any defect problems if possible. Should I be worried about anything here?

It seems a couple of units had issues and are being taken care of by the seller. There's no way to know in advance, apart from opening and testing, if a unit might have a defect. For the bargain price on new-old-stock, you take some risk, but it's not such a big deal since the seller is responding to any issues. Many of us bought them.

Quote
Finally, (hope I'm not asking too many questions here) does the older cal date have any practical consequences for a hobbyist use-case?

Unless you need to measure something and know for sure that it is X, not X+0.001 nor X-0.001, for example, there's no practical consequence for hobby use if the meter has drifted a little.

For most electronics, knowing that a value is in the right ballpark is often sufficient. Whether your 5V power rail measures 4.9, 5.0, or 5.1 volts usually won't have an adverse effect on your circuit. If your project requires a meter that is calibrated, you'll know it because you designed it that way, it's documented with such requirements, or you have to adhere to some standards that require it.

Quote
I like the high count and accuracy figures for these meters, but if they've drifted too far out of spec that's somewhat moot (and I don't have the equipment to do a nice calibration myself).

Being out of spec doesn't render useless the meter's high count and resolution. You'll still be able to maintain more decimal places at higher measurements than with a lower-count meter. You'll also still be able to detect smaller changes in values (i.e., the difference between two readings) than with meters that have lower resolution. What you lose with significant drift is accuracy, i.e., the ability to know the absolute value of a measurement relative to a known standard.

Quote
It sounds like most people have been getting good results but the cal dates appear to be sliding backwards as the seller goes through stock.

Yes, that does seem to be the case.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 16, 2017, 02:20:23 am
My goal or interest is just to learn the fundamentals of analog and digital electronics and build some projects like a bench power supply and microprocessor related circuits and maybe some current & resistance reference type gear. I have a thing about accuracy and like my stuff to be as close to dead on as I can afford, probably over the top. I feel like my next purchase should be along the lines of an accurate DMM. A bench unit would be fine with me, but on the surface this looks like a very good deal with the exception of a few lately showing up a bit off. Not having anyway to check it, I am not sure I would trust it without having it calibrated or at least checked by someone with some known good equipment. I don't know anyone like that so I would have to pay someone to do it, or am I miss reading some of the more recent posts. Thanks for taking the time to read this. Dave

Welcome to the forum, Old Printer. See my reply to BMCha, above, which covers some of the things you're asking, especially with regard to accuracy, calibration, and drift.

Bottom line: If you want/need high accuracy, then regardless which meter you buy, have it calibrated and adjusted to satisfy your requirements. For most uses, the expense is not necessary.
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 16, 2017, 05:07:07 pm
Quote from:  bitseeker
I haven't heard anything specifically about the A models from nmori (no purchases mentioned here yet), so I don't know how they compare to his B models. I quite like the color of the A models, though I got a B one before the A's showed up.
I guess I'm the only one here to have taken the plunge on the A model.  It should be arriving today or tomorrow.  I'll give a rundown on what's in the box and how old the cal certs are.

I like the color of the U1253A's he's selling (http://"http://www.ebay.com/itm/Agilent-U1253A/292147735479") (darker blue) better than the light blue of the U1252A but the price is higher, the battery life is abysmal if the handheld meter spreadsheet is to be believed, and they are reportedly impossible to read outdoors.

One thing to note about nmori is that he seems to only ship midweek, so if you buy over the weekend, expect a few days delay in shipment.  He still hasn't provided a tracking number for the last order.  He is quick to follow up on messages, however he did not follow through on his promise to post the tracking number.

The U1252B I received was musty-smelling and 6 years new-old stock.  The meter is fine.  The battery is holding its charge.  And rubbing the meter down with some isopropyl alcohol took care of the musty smell.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 16, 2017, 05:35:06 pm
I guess I'm the only one here to have taken the plunge on the A model.  It should be arriving today or tomorrow.  I'll give a rundown on what's in the box and how old the cal certs are.

I like the color of the U1253A's he's selling (http://"http://www.ebay.com/itm/Agilent-U1253A/292147735479") (darker blue) better than the light blue of the U1252A but the price is higher, the battery life is abysmal if the handheld meter spreadsheet is to be believed, and they are reportedly impossible to read outdoors.
I would have, had I known he had other models beyond the '52B available. (I got two of them, both ended up being fairly recent stock.) The A's come with accessories I might have liked, and I like the blue a lot better than the orange. ::shrug:: (I suppose that the orange backlight is easier to read than blue, but the OLED woulda been nice.)

Still kicking myself for not pouncing 2 years ago when Distrelec was selling off the U1273AX (the extended temp OLED model) for less than $500...  |O
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on June 16, 2017, 07:17:47 pm

Still kicking myself for not pouncing 2 years ago when Distrelec was selling off the U1273AX (the extended temp OLED model) for less than $500...  |O
The U1273AX are still sold for around $500 to $ 550
But do you really need the - 40°C to + 55°C temperature range?
The U1273A is a hundred $ cheaper and works really well in the lab under normal temperature condition.
A really good alternative for the U1252B, once the ebay seller runs out.


Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on June 16, 2017, 07:51:27 pm
On the OLED model, I liked OLED until I personally experienced OLED failure on several pieces of expensive equipment. The OEM's for the equipment stated that OLED had a very limited life and the issue was causing them a lot of warranty claims and concern. LCD had not caused such issues for them.

If a meter effectively has a 'ticking' OLED 'End of Life' clock in it, I am not interested in owning it. I like equipment to have longevity. For anyone wondering, my OLED display failures were on White/Blue displays of LigiCube forensic hard disk copiers. The displays just faded until they were totally dark.

I understand that OLED displays contain organic components in their construction. I do not know if the ageing issue continues whether the display is on or off. If it is age related rather than use, New Old Stock units could already be well on the way to OLED display failure.

Am I right in thinking that Keysight effectively abandoned support for the OLED equipped meters ? Could this be because of the OLED issue ?

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on June 16, 2017, 09:08:49 pm
I have several OLED display instruments and as far as I can tell, none of them have faded so far over several years.
On the other hand many of my instruments with VFD have gone darker really quickly.

I think the only Keysight bench top DMM with OLED was the 34450A and it is still available new.
And the handheld DMM U1253B, U1273A are still available.
Which OLED instrument has been abandoned?

Title: Re: Bunch of keysight U1252B meters around
Post by: gnavigator1007 on June 16, 2017, 09:34:38 pm
Just won a u1273 yesterday from ebay. Display looked good in the pics, but we'll see.  Couldn't stop myself there, so I ended up also ordering one of the u1252a's within an hour from nmori. 
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on June 16, 2017, 09:49:31 pm
High-Voltage,

It was a previous thread that I saw that made me think Keysight were abandoning the U1253......

https://www.eevblog.com/forum/testgear/replacing-oled-screen-on-an-agilent-u1253a-multimeter/msg483912/#msg483912 (https://www.eevblog.com/forum/testgear/replacing-oled-screen-on-an-agilent-u1253a-multimeter/msg483912/#msg483912)

Post number 4 to be specific. I see that this applied to the U1253A though and the U1253B remains current. My mistake.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 17, 2017, 02:47:24 am
I understand that OLED displays contain organic components in their construction. I do not know if the ageing issue continues whether the display is on or off. If it is age related rather than use, New Old Stock units could already be well on the way to OLED display failure.

As far as I know, OLEDs age when power is applied to them and the blue LEDs age faster than red or green, resulting in color shifting, in addition to loss of brightness, over time.

I haven't heard anything about their off-state longevity. However, I have a Samsung Galaxy S phone with an AMOLED display from 2010 that still looks great, despite its age, because it has low on-time.
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 17, 2017, 04:01:06 am
OK, I have the U1252A in hand.  I won't go into the details of the meter's capabilities.  If you are looking for that, see the the handheld DMM spreadsheet.  I'm just going to talk about the condition of the meter I received from nmori (from an eBay listing (http://"http://www.ebay.com/itm/Agilent-U1252A-With-Carrying-Case/292147737467")) today.  I have a U1252B from nmori (http://"http://www.ebay.com/itm/Agilent-U1252b-Digital-Multimeter/292140659554") and will offer some comparisons with that meter. I have attached a few photos of the U1252A meter, soft case and leads.

This is a high-end meter that is being sold as "new-old stock".  The meter is no longer produced by Keysight.  The price on these meters is a good deal below what most others are asking.  From that standpoint, it is a good deal for a quality meter.  Like the U1252B I received, these meters appear to have been in storage for over 5 years.  This meter comes with a few extras that were not included with the U1252B: a soft case, and a few extra probe tips.  The meter itself is an older model than the U1252B, but it has pretty much the same specs.  The most notable difference is that the meter is blue instead of safety orange, and has a blue backlight.

The cal cert is from September 2011, which is the same time frame as the U1252B I received.  Some people are receiving even older cal dates than this on their U1252B meters now.  The meter appeared to be new, in the box.  I found it odd that the protective covers were not on the probe tips when I removed them from the bag.

First impressions: if you are allergic to mold spores, I'd steer clear of this one.  The black soft case had white/grey powdery residue on the sides and corners [see photo] which appeared to be mold spores.  However none of it smelled moldy like the U1252B I received did.  And spraying it off with canned air seemed to clean it up.  The meter itself was in perfect condition.  The case seems to have protected the meter from the elements some.

The blue color is a lot darker than I was expecting which was a pleasant surprise.  I wasn't sure I really wanted a baby blue DMM as some photos suggest.  This is a good medium blue color.

The 7.2V NiMH battery was dead, so I popped in a fully charged 8.4V NiMH.  The meter turned on and passed its first few tests with flying colors.  The meter seems to be as well calibrated as the U1252B -- but that is with some very cursory checks.  My U1252B seems to be still within spec.

The probe set this meter comes with is a bit... umm... odd.  It comes with:
First, it only comes with one black mini-grabber instead of a red/black pair.  If you look closely at the marketing photos, that's what you'll see.  The mini-grabber and fine-tipped probes are designed to fit over a 19mm tip probe.  You may notice that this set does not come with a 19mm tip probe.  The mini-grabber does not fit any probe I own.  It certainly does not fit the 4mm probes shipped with the meter.  Neither do the fine tip probes.  One imagines they would both fit an Agilent/Keysight 19mm probe but I cannot test that.  So the mini-grabber and fine-tipped probes are useless as shipped.  The fine tipped probes at least fit the 19mm probe tips from my bench DMM.  The alligator clips and the SMT grabbers fit directly on the test leads rather than sliding over a probe tip so they work just fine.  Whoever came up with the probe selection is first in line for the 'B' Ark if I have any say in the matter.

I went through the setup menu, which is lacking a couple options from the U1252B.  The option I was looking for was the option to switch the battery voltage from 7.2V to 8.4V.  The other missing option is the "Filter" option.  The firmware revision is reported as "0.91". The Keysight parts list shows that the 8.4V battery is a replacement for the 7.2V battery, so one supposes it will work.  I plan to just charge the 7.2V battery that came with it and use that.  The battery that came with the 1252B is working just fine.  I expect this one to function as well.

I really thought I would be a fan of the blue backlight.  But side-by-side, the orange backlight of the U1252B seems to provide better contrast for my eyes.  If I were younger, I'd probably prefer the blue.  But as I get older, I just want something easy on the eyes.

The soft case (once cleaned up) is decent and will fit the leads and a set of probe tips.  Don't expect to fit all of the grabbers, clips and tips.  It won't fit the charger and power cord.  It is not heavily padded but should protect the meter from damage in a toolbox.  There is a pocket in the front but I don't recommend putting more than the quick start guide in there.  Anything substantial in there will likely rub against and damage the meter's display when the case is zipped closed.

To summarize, it's a decent meter for a decent price.  For me, the U1252A is likely to be a backup to the U1252B rather than the other way around.  My recommendation: unless you just must have the blue DMM or think you'll get some value from the case and SMT grabbers, get the U1252B and invest in a good probe kit (http://"http://amzn.to/2sCG0dr").  But either meter is a great option at this price.

Update 1: The NiMH battery in the U1252A needs to be replaced.  Fully charged, it lasted 3 hours the first time, then only 2 after the second charge.  A trivial expense and not really a surprise.
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on June 17, 2017, 10:13:48 am
Thank you for the summary of the U1252A :)

I have some Agilent probe kits that look to be the same as the one supplied with your meter. I bought them at a very good price and they do fit my FLUKE meter probes. I shall dig out a set and compare them toy your picture.

I believe I saw these sets of probes being sold recently on eBay for £24. IIRC, I paid £10 per set a few years ago when a seller had a bulk lot to dispose of.

I was wondering whether I would have preferred the U1252A to my U1253B but you kind review has convinced me I did make the right decision for me. I already have the probe sets and I like to buy nice padded cases to protect my better meters from impacts etc. For me, the U1252A offers no advantages.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on June 17, 2017, 11:32:30 am
Pictures of my two types of Agilent lead set

These do fit other meter probes and meters like my original Fluke 87III and its probes.

I would have thought the leads, type 34138A, should have been provided with the U1252A. The leads that were provided appear to be an additional lead set designed to be sold for use with the normal long probe tip type probes.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: Old Printer on June 17, 2017, 01:59:37 pm
Bitseeker, thanks formthenwelcome and the info. I will be reading along and see what developers. Dave
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 17, 2017, 06:15:55 pm
So I discovered one downside to the U1252B (presumably applies to the whole U125x series): the diode test only goes to 2.1V, meaning it can't measure most modern LEDs. It lights them, but can't measure the Vf, just like my K197. Luckily my 87V and K2015 have no trouble with this. (My cheapie Mastech MY64, and random VC830L fail to even light a 3V LED, never mind measure it.)
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 17, 2017, 08:57:04 pm
Yeah, the manual says it will measure up to about 2.1V.  I'm not sure what the intention is of showing "4.2" for the diode spec for this meter in the handheld DMM spreadsheet.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 18, 2017, 03:07:18 am
Thanks for the comparison, colorado.rob. I wonder if a firmware upgrade (if somehow possible) would enable it to support both voltages like the 52B or if the hardware is different.
Title: Re: Bunch of keysight U1252B meters around
Post by: Keysight DanielBogdanoff on June 19, 2017, 08:50:50 pm
I'll check with the handheld folks and see what they say.
Title: Re: Bunch of keysight U1252B meters around
Post by: lowimpedance on June 20, 2017, 12:04:03 am
Pictures of my two types of Agilent lead set

These do fit other meter probes and meters like my original Fluke 87III and its probes.

I would have thought the leads, type 34138A, should have been provided with the U1252A. The leads that were provided appear to be an additional lead set designed to be sold for use with the normal long probe tip type probes.

Fraser
Fraser , does one of your sets leads appear to have some white powdery residue on them ?. I have one set that seems to have it while another set does not !.
The set that does have it most certainly did not when I bought it so was it storage in the plastic wallet or something about the materials used in the leads  :-//.
Note that the environment that my lead sets live in is always temp. and humidity controlled so mold is not likely.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 20, 2017, 02:17:50 am
Isn't that just talc to keep the silicone from being sticky??
Title: Re: Bunch of keysight U1252B meters around
Post by: lowimpedance on June 20, 2017, 03:16:38 am
Strange then it did not have it when I bought the set but appeared to develop over some when stored in the wallet they came in. Unfortunately I don't know the approximate 'time ' frame required to develop.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 20, 2017, 03:41:42 am
It would've been interesting to compare, under a microscope, the "dust" from your probes with the spores from colorado.rob's case.
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on June 20, 2017, 10:02:55 am
Regarding the white powder on the leads. My leads are military surplus unissued stock. I has
I had assumed that they were covered with talc as I have previously seen on Silicon leads. No idea what the dust is though. It was there from the day I openened the sealed plastic bag in which the leads were packed for the MoD.
The leads were packed with Solica Gell sachets, so damp is unlikely to be the cause.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 21, 2017, 03:30:17 pm
It would've been interesting to compare, under a microscope, the "dust" from your probes with the spores from colorado.rob's case.
Well, since you asked and I happen to have a cheapo USB microscope, here you go.  I'm not able to interpret these images.  That's not one of my areas of expertise.

Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 21, 2017, 04:24:58 pm
Probably need a lot more magnification, but it looks mold-like. However, I am not an expert on such flora, either.
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on June 21, 2017, 04:39:16 pm
That appears to be a mold formation as I have seen such before.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: SeanB on June 21, 2017, 06:24:03 pm
Mould, wash in a strong warm bleach solution, leaving the leads in contact with the strong bleach for at least 5 minutes, and scrub with either a cloth or a plastic brush. Should kill it all. Rinse in clean water, and dry thoroughly after the wash.
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 21, 2017, 07:02:00 pm
Mould, wash in a strong warm bleach solution, leaving the leads in contact with the strong bleach for at least 5 minutes, and scrub with either a cloth or a plastic brush. Should kill it all. Rinse in clean water, and dry thoroughly after the wash.

Those pictures are not of leads.  They are of crevices in the soft case that comes with the U1252A DMMs sold on eBay.
Title: Re: Bunch of keysight U1252B meters around
Post by: Keysight DanielBogdanoff on June 28, 2017, 06:49:43 am
Thanks for the comparison, colorado.rob. I wonder if a firmware upgrade (if somehow possible) would enable it to support both voltages like the 52B or if the hardware is different.

Here's the feedback from the team regarding the firmware question:

"Unfortunately firmware upgrade would not able to enhance this feature to able to measure modern LED as this is limit by both hardware and firmware in the unit itself,  which the meter measurement is only able to measure and display up to 2.1V for the diode test.

Some of the users would have asked what the maximum open circuit for the diode measurement, therefore this is the reason why we stated the open circuit info in datasheet."
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 28, 2017, 02:44:05 pm
I think the big question on everyone's mind was "is it possible to update the firmware on these units and, if so, how?"

It's obvious that there have been firmware updates, but there is no data about specific firmware versions and their respective changes on Keysight's support sight that I could find.  Nor is there information about whether one would want a firmware update or how to go about getting the firmware updated.

Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on June 28, 2017, 02:49:05 pm
I thought there was a post in this thread saying that the firmware was not upgradable. But AFAIK the only differences in recent firmware is whether the slow-as-heck filter is on by default. (On older firmware it's off, on newer it's on.)
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 28, 2017, 05:37:43 pm
The only difference I recall for the 51 and 52 is the default filter setting, as tooki said. On the 53, which is customer-upgradable, there was a fix for the battery charger, which had a problem undercharging batteries.
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on June 28, 2017, 07:17:51 pm
The U1252A that I have does not have does not have a filter function or 8.4V battery support in its menu system.  Depending on how these features are implemented (in HW/SW), they could be firmware updates.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on June 28, 2017, 10:58:00 pm
Interesting. I guess the filter is a feature of the B versions.
Title: Re: Bunch of keysight U1252B meters around
Post by: mark03 on June 30, 2017, 10:54:13 pm
A quick update on my DOA U1252B:  I received a replacement meter today from nmori87-us, and the new unit (cal date Nov 2011) is working fine  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: bsudbrink on July 02, 2017, 12:13:16 am
How's the smell?
Title: Re: Bunch of keysight U1252B meters around
Post by: mark03 on July 02, 2017, 03:03:56 pm
How's the smell?
Considerably less of an odor on the replacement, although as others have pointed out, after some days/weeks in the open, the smell largely dissipates.
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on July 02, 2017, 05:40:15 pm
Just wipe it down with isopropyl alcohol to eliminate the smell.
Title: Re: Bunch of keysight U1252B meters around
Post by: VK5RC on July 04, 2017, 12:02:01 am
For information, I have a MY50******  U1253B, ie 7yr old, which is my first grab dmm even on the bench, gets about 1-2hrs of on time per week. I switch off between readings. Stored in a cool place (14-26C range).
 
No oled fading of note.

Poor readability in daylight but fantastic inside.
Bought a NOS U1252b - no problems either.
Rob
Title: Re: Bunch of keysight U1252B meters around
Post by: Prime on July 08, 2017, 08:01:01 am
The seller lists 3 different models, do they all come with bags and probes? 
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on July 08, 2017, 11:39:32 am
The seller lists 3 different models, do they all come with bags and probes?
The last two pages of this thread cover that extensively.
Title: Re: Bunch of keysight U1252B meters around
Post by: Prime on July 08, 2017, 12:02:07 pm
The seller lists 3 different models, do they all come with bags and probes?
The last two pages of this thread cover that extensively.

You mean here, page 17?

https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/400/ (https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/400/)
Title: Re: Bunch of keysight U1252B meters around
Post by: shteii01 on July 08, 2017, 07:14:55 pm
Probes, yes.
Bags, no.
Title: Re: Bunch of keysight U1252B meters around
Post by: Prime on July 13, 2017, 10:54:53 pm
Ordered one, no feedback from the seller though. How long does he normally take to dispatch?
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on July 13, 2017, 11:01:57 pm
Within a few days. He seems to ship once or twice a week.
Title: Re: Bunch of keysight U1252B meters around
Post by: ollopa on July 30, 2017, 08:31:09 am
The probe set this meter comes with is a bit... umm... odd.  It comes with:
  • Test leads (2)
  • 4mm tip probes (2)
  • Alligator clips (2)
  • Fine tip probes (2)
  • SMT grabbers (2)
  • Mini-grabber (1)

I'm wondering if your meter was packed with the wrong probe kit or if it was opened and missing pieces.

I just received my meter from nmori, 2010 cal date, and it came with the U1168A probe kit that includes both 4mm and 19mm probe tips:
http://www.keysight.com/en/pd-1639316-pn-U1168A/standard-test-lead-kit-with-19-mm-and-4-mm-probe-tips?cc=US&lc=eng (http://www.keysight.com/en/pd-1639316-pn-U1168A/standard-test-lead-kit-with-19-mm-and-4-mm-probe-tips?cc=US&lc=eng)

(http://static3.shop033.com/resources/4D/1101/picture/7E/15800958.jpg)


First, it only comes with one black mini-grabber instead of a red/black pair.

Yes, that appears to be normal with this kit.  It's an L shaped rather than a U shaped hook on the grabber, so it won't grip incredibly securely.  On the other hand, it's ideal for clipping your ground lead onto the edge of sheet metal.

In my kit, everything fits fine over the included 19mm probe tips. 
Title: Re: Bunch of keysight U1252B meters around
Post by: WhichEnt2 on July 30, 2017, 11:04:39 am
Is there any possibility to convince the seller to send one of his meters to non-listing country?  He don't decline that possibility, but seems to be not interested in that. A couple of days and still don't even define the shipping rate.

Quote
I just received my meter from nmori, 2010 cal date
What model exactly do you bought? Could you please check the firmware version?

Looks like reported year of cal date constantly decreasing through time.
The first meters on the thread have calibration on 2015 or so.
Title: Re: Bunch of keysight U1252B meters around
Post by: ollopa on July 30, 2017, 04:36:09 pm
U1252A, V0.91 with 7.01.09 at the top.

It also had the moldy case issue, but I sprayed it down with rubbing alcohol last night and it appears fine this morning.
Title: Re: Bunch of keysight U1252B meters around
Post by: WhichEnt2 on July 30, 2017, 05:04:04 pm
U1252A, V0.91 with 7.01.09 at the top.

It also had the moldy case issue, but I sprayed it down with rubbing alcohol last night and it appears fine this morning.
Much thanks.

Is there any last batch u1252b owners? It would be nice to observe the current situation about cal dates and firmware versions of it.
Title: Re: Bunch of keysight U1252B meters around
Post by: mtdoc on July 30, 2017, 05:54:36 pm

First, it only comes with one black mini-grabber instead of a red/black pair.

Yes, that appears to be normal with this kit.  It's an L shaped rather than a U shaped hook on the grabber, so it won't grip incredibly securely.  On the other hand, it's ideal for clipping your ground lead onto the edge of sheet metal.

In my kit, everything fits fine over the included 19mm probe tips.

Neither of mine came with any minigrabber :(   Both came with lead cables, normal probe tips, alligator clips.
Title: Re: Bunch of keysight U1252B meters around
Post by: nanofrog on July 30, 2017, 06:47:40 pm
I bought my U1252B years before the NOS models that have shown up on eBay, but I don't regret the purchase. I did get a $100 rebate though, which I spent on additional accessories (so it was like buying the meter and getting a bunch of free stuff to sweeten the pot).  :P

FWIW, it was factory calibrated on 11 May 2011, and I purchased it that year (thought it was back in 2009  :-[  :palm:).

As per accessories, it only came with a basic lead set (silicone test leads + 19mm & 4mm probes).
I also purchased the following:
Title: Re: Bunch of keysight U1252B meters around
Post by: ollopa on July 30, 2017, 09:48:50 pm
That's normal for the B model.

The 1252A's that are up for sale had a free case and probe set upgrade option.  The B's did not.

I purchased a brand new U1252B from Keysight last year and it appears to be the same thing as the Agilent branded version.  It does not come with a case or with grabbers, and the part number for the basic probe set appears to be U1251-62100 (no 1 at the end).

I've seen two part numbers for the A model probe set:  U1251-62101 and U1168-62101.  Looking closely at colorado.rob's picture and nmori's eBay picture for the U1252A, they both show the U1251-62101 probe kit without the 19mm tips.

Now right on the side of the box, it says that the U1252A includes 4mm and 19mm tips.  I feel like this might have been a big screwup at Agilent when packing these kits.  My kit came with the U1168-62101 probe kit which has the 19mm tips.  I think either Agilent forgot to put the 19mm tips into a batch of U1251-62101 probe kits or somehow they've vanished from nmori's stock.

I considered the possibility that this was just a clip on accessory pack for 19mm tips but then why would it include the probe leads?  I think it makes more sense that it was supposed to include the 19mm tips, like my kit, and perhaps somebody on the line didn't realize that there's a difference between the two tips and thought she was only supposed to pack 1 set of tips instead of 2.

The Keysight rep, if he's still trolling this forum, should investigate this issue with the Malaysia team and offer to trade up the sets missing 19mm tips with a new U1168A probe kit.  Sure these are old stock of an EOL product from before the Keysight split, but the same people behind this product are with Keysight and in my opinion they should endeavor to understand this order fulfillment mistake and make good on their product.

Also I'm not so sure that the mold issue is a result of how these meters were stored.  The boxes, calibration certificates, and everything else appears to show no signs of moisture or mold.  It's also strange that whatever is on the carry case did not transfer to its surroundings.  Maybe it's not really mold?  In any case, I think it's an issue with the material that the case manufacturer used, as they all seem to be contaminated to some extent.
Title: Re: Bunch of keysight U1252B meters around
Post by: gnavigator1007 on July 31, 2017, 12:11:01 am
It's mold. Doesn't take away from it being a good deal tho. Simple exposure to warehouse humidity and cleans easily enough. Would have been reasonable for Keysight to make good on fulfillment back when they were actually selling these units, but these are from a third party seller so don't think they owe anybody anything.
Title: Re: Bunch of keysight U1252B meters around
Post by: ollopa on July 31, 2017, 02:55:31 am
Well I don't have enough experience with mold to to know one way or another, but it just brushes off and wipes away with a little alcohol far easier than any any kind of mold or mildew I've ever dealt with before.  If it is mold then that's a plus because it is extremely easy to deal with.

Warehouse humidity is a hypothesis but I think it's notable than nothing else inside or outside of the box was affected.  There's no way mold came in from the outside world -- the spores would have had to be on the bag material when it was packaged up and it's more like prolonged lack of exposure allowed them to not die rather than an ideal environment allowed them to thrive.

When you talk about moldy product from humid storage, I expect to find surface rust on metal parts, discolored and deformed cardboard packaging, crumpled and water-stained paper, etc.  At least in the case of my meter, you would never get the impression from the packaging that it spent any time at all in humid storage.  After reading this thread, I was expecting far worse...

I find it difficult to believe that a third party seller would rummage through several of the probe kits to go after the 19mm tips, yet leave the leads and all the 19mm accessories behind.  It's far more likely that it left the factory that way, which points to a serious process deficiency.  It's not about whether or not they have a legal obligation to anybody -- it's about PR and brand positioning to maintain their assertion that they are #1 in the T&M industry.

I think we were all suitably impressed when Fluke made good (https://hardware.slashdot.org/story/14/03/21/1720255/fluke-donates-multimeters-to-sparkfun-as-goodwill-gesture) with a bunch of people who weren't even their customers.  They were willing to spend $30k to prevent their name from being associated with a bad thought because somebody over there understands marketing and brand building.

Legally, Keysight can do whatever they want but this forum attracts a lot of eyes and their handheld DMM reputation is not doing so well after the assembly and inspection disaster, moldmaster 9000 carry cases, and Russian roulette probe kits.  There are two ways to see this type of situation from a branding and management point of view:  Either you see this as a need to shift the blame around until you aren't responsible, which does nothing to change people's perception about the company, or you see it as an opportunity to stand behind your product and make good on your marketing rhetoric.
Title: Re: Bunch of keysight U1252B meters around
Post by: gnavigator1007 on July 31, 2017, 03:50:36 am
Does seem likely enough that mold spores were packaged along with the other contents of the box. Not much of an issue. As you said it is easy enough to clean. I agree nmori didn't go rummaging through these. Seems reasonable enough to me that the mix up could be a factor in why these were not previously sold and are now available at a cheaper price from a 3rd party liquidator. Mistakes happen. This would only be an issue if they had been sold back in the day like this. I don't doubt that they would have made right with their customers at the time. As to the Fluke / SparkFun drama, seems a bit ridiculous to praise them for flexing legal muscle over a color. Sure, they have to show that they've defended their trademark, but those meters that were destroyed were not labelled "Fluke". While it didn't hurt their reputation for quality in my eyes, the only "brand building" I took away from it was that they would rather hurt a smaller company than let someone else play with their crayons.
Title: Re: Bunch of keysight U1252B meters around
Post by: BMCha on August 01, 2017, 04:58:37 am
That's normal for the B model.

The 1252A's that are up for sale had a free case and probe set upgrade option.  The B's did not.

I purchased a brand new U1252B from Keysight last year and it appears to be the same thing as the Agilent branded version.  It does not come with a case or with grabbers, and the part number for the basic probe set appears to be U1251-62100 (no 1 at the end).

I've seen two part numbers for the A model probe set:  U1251-62101 and U1168-62101.  Looking closely at colorado.rob's picture and nmori's eBay picture for the U1252A, they both show the U1251-62101 probe kit without the 19mm tips.

Now right on the side of the box, it says that the U1252A includes 4mm and 19mm tips.  I feel like this might have been a big screwup at Agilent when packing these kits.  My kit came with the U1168-62101 probe kit which has the 19mm tips.  I think either Agilent forgot to put the 19mm tips into a batch of U1251-62101 probe kits or somehow they've vanished from nmori's stock.

I considered the possibility that this was just a clip on accessory pack for 19mm tips but then why would it include the probe leads?  I think it makes more sense that it was supposed to include the 19mm tips, like my kit, and perhaps somebody on the line didn't realize that there's a difference between the two tips and thought she was only supposed to pack 1 set of tips instead of 2.

The Keysight rep, if he's still trolling this forum, should investigate this issue with the Malaysia team and offer to trade up the sets missing 19mm tips with a new U1168A probe kit.  Sure these are old stock of an EOL product from before the Keysight split, but the same people behind this product are with Keysight and in my opinion they should endeavor to understand this order fulfillment mistake and make good on their product.

Also I'm not so sure that the mold issue is a result of how these meters were stored.  The boxes, calibration certificates, and everything else appears to show no signs of moisture or mold.  It's also strange that whatever is on the carry case did not transfer to its surroundings.  Maybe it's not really mold?  In any case, I think it's an issue with the material that the case manufacturer used, as they all seem to be contaminated to some extent.

I got one of the A's a few weeks ago. Cal date is September 2011 and it did not come with the 19mm tips, only the 4mm. On the side of the box there's one bullet point that was covered up (presumably at the factory) with a piece of blue tape exactly matching the box color. I pulled it up and while it took some of the box along with it it's clear that the original bullet point was "Test Probes (19mm Tips)". I will also note that right below this (uncovered) is the line "Test Probes (4mm Tips)".

It seems like somewhere along the line they changed the probe set to not include the 19mm tips and had the boxes modified accordingly. Interesting that they didn't bother removing or otherwise changing the included accessories that require the 19mm tips.
Title: Re: Bunch of keysight U1252B meters around
Post by: ollopa on August 01, 2017, 06:27:37 am
That is very interesting.  Hopefully others will chime in and state if they also had the blue tape on the box or not.
You have to wonder if the person who made that call realized the significance of not including the 19mm tips.
Title: Re: Bunch of keysight U1252B meters around
Post by: gnavigator1007 on August 01, 2017, 07:53:03 am
This it's an interesting observation.  I hadn't noticed the tape, but it is there. Mine has a cal date of September 13, 2011
Title: Re: Bunch of keysight U1252B meters around
Post by: nanofrog on August 01, 2017, 10:45:02 am
Perhaps it has to do with the date the 4mm probe requirement went into effect, and they weren't sure if the 19mm probes could still be included, so removed them & covered the 19mm text of included accessories (CYA mentality).

FWIW mine is a B model, and was calibrated in May 2011 and it came with both 19mm & 4mm probes. I can't recall the exact date the 4mm probe requirement went into effect, but mid 2011 seems about right.

As per bullet points, the box mine came in doesn't even mention probes at all; probes are only mentioned under the Recommended Accessories headings on the sides & have photos of the P/N's just above the text.
Title: Re: Bunch of keysight U1252B meters around
Post by: WhichEnt2 on August 01, 2017, 10:56:48 am
Could anyone please send me the seller's e-mail in PM?
Nmori told that he not able to sell it on ebay outside of their global shipping program.
Title: Re: Bunch of keysight U1252B meters around
Post by: colorado.rob on August 01, 2017, 12:25:26 pm
I sell online and there are places that are a pain to ship to.  It's not worth the time. Use a remailer service that sends bulk shipments to your country.  You pay domestic shipping to the seller and a fee to the remailer.
Title: Re: Bunch of keysight U1252B meters around
Post by: WhichEnt2 on August 01, 2017, 12:51:12 pm
I sell online and there are places that are a pain to ship to.  It's not worth the time. Use a remailer service that sends bulk shipments to your country.  You pay domestic shipping to the seller and a fee to the remailer.
I receive some stuff through mail-forwarders and trusted one make too much overhead for $200 dmm.
If you do not ship to such places - you simply declare it without wasting any time, don't it?

He offered a deal outside of ebay 2 times, on the first attempt I send him my email address in attachment. The game of patience is near to end.

I rather create a long-term WTB for this meter on this forum and if it doesn't work at all I then decide not to want this meter anymore.
Upd: https://www.eevblog.com/forum/buysellwanted/wtb-agilent-keysight-u1252b/ (https://www.eevblog.com/forum/buysellwanted/wtb-agilent-keysight-u1252b/)
Title: Re: Bunch of keysight U1252B meters around
Post by: bsudbrink on August 01, 2017, 07:25:45 pm
Warehouse humidity is a hypothesis but I think it's notable than nothing else inside or outside of the box was affected.

Um, for several of us (I have a B) the staples on the quick start guide were corroded to black dust. On another note, there was no visible mold on mine, but it had a "funky" smell. I did not treat mine in any way but the smell is gone (to my nose anyway).
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on August 01, 2017, 08:07:23 pm
My 'B' model had a single patch of mold on the rear of the meter near the IR port.

The meter was in a plastic bag and the staples on the handbook were slightly rusty. The meter did not smell musty though.
I have no idea where the mold came from but wondered if it was just in the air when packed and grew over a prolonged period of time in appropriate conditions. It was interesting that the mold was only in one very defined patch on my meter. Most strange I must say. The mold has not in any way effected the meters looks or functionality.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: Nmori87 on August 03, 2017, 11:48:42 am
New to the site, wanted to thank bitseeker for posting my meters on here. Let me know if you all have any questions about them.
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on August 03, 2017, 12:32:15 pm
Nmori87,

Welcome :)

And thank you for making these lovely meters available at reasonable cost.

Fraser
Title: Re: Bunch of keysight U1252B meters around
Post by: HighVoltage on August 03, 2017, 02:43:10 pm
New to the site, wanted to thank bitseeker for posting my meters on here. Let me know if you all have any questions about them.

Hello Nmori87 and welcome here.
I bought one from you and I am very happy with it.
It was Agilent branded.
Some people got a Keysight branded one, do you still have some of those?
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on August 03, 2017, 06:32:29 pm
New to the site, wanted to thank bitseeker for posting my meters on here. Let me know if you all have any questions about them.

Hey, good to see you here, Nmori! Welcome to the forum. cncjerry originally started the thread, but I'm happy to have been able to help out with updates, relaying questions, etc.
Title: Re: Bunch of keysight U1252B meters around
Post by: BU508A on August 03, 2017, 08:50:42 pm
New to the site, wanted to thank bitseeker for posting my meters on here. Let me know if you all have any questions about them.

No questions at all. I've bought one of the U1252B from you (Agilent branded) and I am happy with it.  :-+

Thank you for making these DMMs available for a reasonable price. Very appreciated.

Andreas
Title: Re: Bunch of keysight U1252B meters around
Post by: deepskyridge on August 03, 2017, 08:55:39 pm
New to the site, wanted to thank bitseeker for posting my meters on here. Let me know if you all have any questions about them.

Welcome to the forum, I got one of the Keysight meters and am very happy with it, use it all the time.

Gary
Title: Re: Bunch of keysight U1252B meters around
Post by: VK5RC on August 03, 2017, 09:13:32 pm
Thanks nmori, another happy customer here!
Title: Re: Bunch of keysight U1252B meters around
Post by: Nmori87 on August 04, 2017, 01:29:09 am
Not yet but I am hoping to have some of the new keysight ones available later this year
Title: Re: Bunch of keysight U1252B meters around
Post by: usagi on August 04, 2017, 10:00:04 am
very happy with my meters, thanks to nmori  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: PTR_1275 on August 04, 2017, 10:38:38 am
Another happy customer here, I've got a keysight one and my boss then bought 4 of them and got Agilent ones (I can at least tell which one is mine at work easily)

I've been avoiding temptation to click buy it now on another one or 2 of these, but I hope to do so soon
Title: Re: Bunch of keysight U1252B meters around
Post by: ollopa on August 04, 2017, 10:41:49 am
My question is where did these meters come from?
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on August 04, 2017, 10:42:31 am
Hi Nmori, I too bought a U1252B from you and I'm VERY happy with the meter.
Title: Re: Bunch of keysight U1252B meters around
Post by: grumpydoc on August 04, 2017, 11:11:35 am
+1  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: sibeen on August 04, 2017, 11:24:46 am
+2  :)

As that was how many meters I bought. Very happy with them.
Title: Re: Bunch of keysight U1252B meters around
Post by: Nmori87 on August 07, 2017, 04:00:15 pm
I'm getting ready to lower the price on the u1252a's if anyone is interested
Title: Re: Bunch of keysight U1252B meters around
Post by: WhichEnt2 on August 11, 2017, 01:58:59 pm
Received today one of this http://www.ebay.com/itm/142463366624 (http://www.ebay.com/itm/142463366624) u1252a. Meter is almost like new, beside some light wiping marks at lens. I don't even found any dust under buttons and rotary switch.
Firmware - 0.91, date - 7.01.09 He also have some u1273, u1272.

Power on with the "dual" button pressed shows firmware version on primary and date on secondary display. This is the date of production?
Also I don't find no traces in "user's and service guide"  of any power-up option like "null", mentioned above in the thread.
Title: Re: Bunch of keysight U1252B meters around
Post by: Nmori87 on August 30, 2017, 10:26:38 am
The u1252a models are 180$ now through eBay. I would sell them for 170$ with PayPal friends and family also
Title: Re: Bunch of keysight U1252B meters around
Post by: WhichEnt2 on September 03, 2017, 01:38:48 pm
I don't find any valuable teardowns on this meter except two videos on the youtube so I decide to post it here.

(https://s26.postimg.org/fieqc04n9/20170822_001.jpg) (http://postimg.org/image/fieqc04n9/) (https://s26.postimg.org/8t86vzjb9/20170822_002.jpg) (http://postimg.org/image/8t86vzjb9/) (https://s26.postimg.org/ndp9qte9x/20170822_004.jpg) (http://postimg.org/image/ndp9qte9x/)

(https://s26.postimg.org/6h4sc4w3p/20170822_012.jpg) (http://postimg.org/image/6h4sc4w3p/) (https://s26.postimg.org/86dvk7bt1/20170822_015.jpg) (http://postimg.org/image/86dvk7bt1/) (https://s26.postimg.org/5dko06bgl/20170822_016.jpg) (http://postimg.org/image/5dko06bgl/)

(https://s26.postimg.org/muorvac91/20170822_018.jpg) (http://postimg.org/image/muorvac91/) (https://s26.postimg.org/6ieq5jxxh/20170822_019.jpg) (http://postimg.org/image/6ieq5jxxh/) (https://s26.postimg.org/prbsvki2t/20170822_022.jpg) (http://postimg.org/image/prbsvki2t/)

(https://s26.postimg.org/s7dm9f05h/20170822_023.jpg) (http://postimg.org/image/s7dm9f05h/) (https://s26.postimg.org/fvapvxcat/20170822_025.jpg) (http://postimg.org/image/fvapvxcat/) (https://s26.postimg.org/tq90ee6px/20170822_026.jpg) (http://postimg.org/image/tq90ee6px/)

(https://s26.postimg.org/o3cngx479/20170822_027.jpg) (http://postimg.org/image/o3cngx479/) (https://s26.postimg.org/a4p4vxtol/20170822_028.jpg) (http://postimg.org/image/a4p4vxtol/) (https://s26.postimg.org/d6fx5w6th/20170822_031.jpg) (http://postimg.org/image/d6fx5w6th/)

(https://s26.postimg.org/wfczvwqyt/20170822_032.jpg) (http://postimg.org/image/wfczvwqyt/) (https://s26.postimg.org/4znxebgqt/20170822_038.jpg) (http://postimg.org/image/4znxebgqt/) (https://s26.postimg.org/3og65ul51/20170822_039.jpg) (http://postimg.org/image/3og65ul51/)

(https://s26.postimg.org/892cks4ud/20170822_040.jpg) (http://postimg.org/image/892cks4ud/)

These two stickers on top half of case seems to be removed from that shielded unit.
It's looks like traces of repair when that unit being removed and label from it being transferred to the meter insides.
Title: Re: Bunch of keysight U1252B meters around
Post by: Nmori87 on September 05, 2017, 01:15:52 pm
What kind of pricing would get these Agilent u1252a meters moving?
Title: Re: Bunch of keysight U1252B meters around
Post by: gnavigator1007 on September 05, 2017, 04:05:16 pm
Are you offering free shipping?
Title: Re: Bunch of keysight U1252B meters around
Post by: Nmori87 on September 05, 2017, 08:06:29 pm
I would like to do free shipping and no eBay because they kill me in fees
Title: Re: Bunch of keysight U1252B meters around
Post by: Nmori87 on September 05, 2017, 08:11:01 pm
If anyone is interested in one of the meters or multiple (I have 39 left) email me at nmori87@gmail.com. Would like to stick to PayPal friends and family
Title: Re: Bunch of keysight U1252B meters around
Post by: Nmori87 on September 05, 2017, 11:12:14 pm
The meters I have available are the u1252a meters. Thanks
Title: Re: Bunch of keysight U1252B meters around
Post by: eeviking on September 26, 2017, 01:43:04 pm
If anyone in UK/EU still need a U1252B TopLoser have one for 200£
https://www.eevblog.com/forum/buysellwanted/fs-(uk)-keysight-u1252b-meter/ (https://www.eevblog.com/forum/buysellwanted/fs-(uk)-keysight-u1252b-meter/)
Title: Re: Bunch of keysight U1252B meters around
Post by: wizard1 on January 09, 2018, 10:41:15 pm
FYI I bought one of the U1252b meters from Nmori87 with a 2011 calibration certificate. As it turns out the ACV and DC/ACV positions were reporting the wrong values. Just a note in case you purchase one of these. Hopefully it was just the meter I received that had issues.
Title: Re: Bunch of keysight U1252B meters around
Post by: cncjerry on January 10, 2018, 01:41:46 am
New to the site, wanted to thank bitseeker for posting my meters on here. Let me know if you all have any questions about them.

hey, what about the guy that found them on eBay and started the thread?  Go check your eBay messages, I am LPfinder on eBay.

Glad it all worked out.  I've been a big proponent of the U1252b, especially at the price you have them.

Jerry
Title: Re: Bunch of keysight U1252B meters around
Post by: wizard1 on February 21, 2018, 06:23:13 pm
Followup to my last post on the AC DC calibration issue. The meter went back to Keysight for repair due to what I thought was a incorrect reading in the presence of RF. They reported the meter was working as designed and indicated it was out of calibration, but didn't indicate by how much. As you can imagine it wasn't critical. However, I did find a bug in the manual for this meter. The input impedance is NOT 10Mohm for voltages >3V or <-2V. Instead it is 5Mohm. Turns out that was my issue...  :palm:

I do still recommend the meters from Nmori87, they are a great value!
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on March 05, 2018, 12:48:46 am
I find the lock on the battery cover is really finicky and tight, requiring a lot of force. I ended turn it too far and shearing off the anemic little plastic lock pin.It still kind of stays on with friction at least. I hate plastic slotted locks.  :rant:
Title: Re: Bunch of keysight U1252B meters around
Post by: Terry01 on March 05, 2018, 12:58:57 am
How hard would it be to get one of those plastic lock pins printed on a 3D printer? The Fluke 289 has 1 too.
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on March 05, 2018, 01:24:23 am
How hard would it be to get one of those plastic lock pins printed on a 3D printer?
As hard as it would be for me to get a 3d printer I guess. And as far as I know, you cannot print fibreglass reinforcement, so it would be much weaker.
Title: Re: Bunch of keysight U1252B meters around
Post by: Terry01 on March 05, 2018, 09:10:20 am
Ah, ok just a thought. The ones for the 289 are a PITA to get. There are some 289 lock pins on Ebay but they have to come from the US and it works out quite expensive by the time you pay shipping too!
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on March 05, 2018, 11:30:38 am
How hard would it be to get one of those plastic lock pins printed on a 3D printer?
As hard as it would be for me to get a 3d printer I guess. And as far as I know, you cannot print fibreglass reinforcement, so it would be much weaker.
If someone comes up with an stl design file, I will print one for you on my 3D printer.
Title: Re: Bunch of keysight U1252B meters around
Post by: Fraser on March 05, 2018, 01:13:03 pm
Just for info folks,

I am having a major disposal session of test equipment and have decided I do not need my U1252B that was bought from the seller detailed in this thread. It is still in the box, as received and has never seen service. I also bought the Bluetooth Module (10m Range version) for it. I will list it in the buy and sell section soon but any expressions of interest may be sent to me by OP if you cannot wait. I am not looking to make money on the unit so fear not, I am not profiteering  :) I just do not need the unit, simple as that.

I also have a brand new Agilent 1231A that will be looking for a new home at a small price.

Fraser
United Kingdom
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 16, 2018, 10:52:32 pm
Is anybody else having issues with charging?

I've got the dial on OFF/CHARGE, the neg charge lead in COM and the pos in CHG. There is 24V on the leads. But the meter doesn't do anything. No beeps, nothing on the display, and 0V on the battery terminals. The meter works fine otherwise. Fuses are fine.
Title: Re: Bunch of keysight U1252B meters around
Post by: bsudbrink on November 16, 2018, 10:59:36 pm
Well, the rechargable battery that came with mine has progressively held less and less charge, so I gave up on it and switched to using off the shelf 9V batteries.  Battery actually.  I have not "run down" the first battery yet.
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 16, 2018, 11:11:12 pm
OK so I just gave up and started putting the meter aside, and it came alive.  :bullshit: It seems to be charging now.

I'm not sure if it's because some time had passed, or if I bumped some connections.  If this is how it's supposed to work, it's kind of unpredictable and unfriendly.
Title: Re: Bunch of keysight U1252B meters around
Post by: PTR_1275 on November 16, 2018, 11:28:12 pm
The first meter I bought was reasonably new. The next 4 were a fair bit older. The batteries too had started lasting less and less. I’ve replaced them with new rechargeable batteries (and changed the voltage setting in the menu) and they haven’t needed to be charged for many weeks now.

What was the date on the calibration certificate? That will give you an idea how long the battery was sitting around for
Title: Re: Bunch of keysight U1252B meters around
Post by: bsudbrink on November 16, 2018, 11:43:17 pm
I’ve replaced them with new rechargeable batteries (and changed the voltage setting in the menu) and they haven’t needed to be charged for many weeks now.
Would you mind sharing the brand and specs?  Thanks!
Title: Re: Bunch of keysight U1252B meters around
Post by: PTR_1275 on November 17, 2018, 03:52:37 am
I just bought the varta rechargeable 9v. They’re only 200mah, but they don’t move far from the bench and with the amount we have, we are not concerned about one being on charge every now and then because we will just grab another one.
Title: Re: Bunch of keysight U1252B meters around
Post by: maginnovision on November 17, 2018, 04:17:02 am
I use the powerex 8.4V 300mAh rechargeable in mine.
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 20, 2018, 07:21:25 am
Is anybody else having issues with charging?

I've got the dial on OFF/CHARGE, the neg charge lead in COM and the pos in CHG. There is 24V on the leads. But the meter doesn't do anything. No beeps, nothing on the display, and 0V on the battery terminals. The meter works fine otherwise. Fuses are fine.

Well I finally found out the problem. The knob is f*cked, like someone dropped it on its face. If you pull up on it then it starts to charge. Anybody else experience this? Not exactly what I expected from a $700 meter sold as "Brand New In Box".
Title: Re: Bunch of keysight U1252B meters around
Post by: Terry01 on November 20, 2018, 08:52:20 am
Is anybody else having issues with charging?

I've got the dial on OFF/CHARGE, the neg charge lead in COM and the pos in CHG. There is 24V on the leads. But the meter doesn't do anything. No beeps, nothing on the display, and 0V on the battery terminals. The meter works fine otherwise. Fuses are fine.

Well I finally found out the problem. The knob is f*cked, like someone dropped it on its face. If you pull up on it then it starts to charge. Anybody else experience this? Not exactly what I expected from a $700 meter sold as "Brand New In Box".

Return it. If the knob is fkd and it's brand new it should be changed no problems....right? ???
Title: Re: Bunch of keysight U1252B meters around
Post by: r0d3z1 on November 20, 2018, 09:02:56 am
If anyone is interested in one of the meters or multiple (I have 39 left) email me at nmori87@gmail.com. Would like to stick to PayPal friends and family

do you still have one ?
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 20, 2018, 10:44:46 am
Is anybody else having issues with charging?

I've got the dial on OFF/CHARGE, the neg charge lead in COM and the pos in CHG. There is 24V on the leads. But the meter doesn't do anything. No beeps, nothing on the display, and 0V on the battery terminals. The meter works fine otherwise. Fuses are fine.

Well I finally found out the problem. The knob is f*cked, like someone dropped it on its face. If you pull up on it then it starts to charge. Anybody else experience this? Not exactly what I expected from a $700 meter sold as "Brand New In Box".

Return it. If the knob is fkd and it's brand new it should be changed no problems....right? ???

Wrong. When you jump in at the end of a topic then at least skim page one so you have some idea what it's about.

These meters were sold on eBay. No returns accepted. Such are the pitfalls. I'll double check but I'm sure it's far out of warranty.

Definitely not one the kind of meter that survives Dave's drop tests.
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 20, 2018, 10:46:41 am
If anyone is interested in one of the meters or multiple (I have 39 left) email me at nmori87@gmail.com. Would like to stick to PayPal friends and family

do you still have one ?

You are more than a year too late. The listing is gone and the seller doesn't have any items for sale.
Title: Re: Bunch of keysight U1252B meters around
Post by: Terry01 on November 20, 2018, 10:59:35 am
Sorry for trying to help! Good enough for you got a duff meter  ;D
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on November 20, 2018, 03:48:40 pm
Wrong. When you jump in at the end of a topic then at least skim page one so you have some idea what it's about.

These meters were sold on eBay. No returns accepted. Such are the pitfalls. I'll double check but I'm sure it's far out of warranty.

Definitely not one the kind of meter that survives Dave's drop tests.
Wow, rude much?

If you mention it being sold “new in box”, then it’s fair to assume it was a recent purchase and that buyer protections would apply. You’re out of line jumping down someone’s throat over this.

If it’s not a recent purchase, did the problem show up from the beginning, or later on? If it was the former, then you should have dealt with it then. If it was the latter, then it’s possible it wasn’t DOA after all...
Title: Re: Bunch of keysight U1252B meters around
Post by: Terry01 on November 20, 2018, 05:10:45 pm
Wrong. When you jump in at the end of a topic then at least skim page one so you have some idea what it's about.

These meters were sold on eBay. No returns accepted. Such are the pitfalls. I'll double check but I'm sure it's far out of warranty.

Definitely not one the kind of meter that survives Dave's drop tests.
Wow, rude much?

If you mention it being sold “new in box”, then it’s fair to assume it was a recent purchase and that buyer protections would apply. You’re out of line jumping down someone’s throat over this.

If it’s not a recent purchase, did the problem show up from the beginning, or later on? If it was the former, then you should have dealt with it then. If it was the latter, then it’s possible it wasn’t DOA after all...

Thank you.... that's what I thought!  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 20, 2018, 09:30:48 pm
I'm not trying to be rude it's just the truth. If you are about to give an answer that is really obvious to everybody, then you're probably missing something.

The problem was always there, but I couldn't say for certain that it wasn't user error, or crap battery. I didn't deal with it straight away so shame on me.  I only now discovered the cause more than a year later.

I'll open it up and take a closer look. Hopefully it's repairable.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on November 20, 2018, 11:45:06 pm
(You might need to fix your quoting there, Terry01!)
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on November 20, 2018, 11:47:13 pm
I'm not trying to be rude it's just the truth. If you are about to give an answer that is really obvious to everybody, then you're probably missing something.
It's you who's missing something, not everyone else. You didn't state originally when you got it, or how, and the clues you did provide hinted towards a recent purchase, as I explained. That's on you, and nobody else.
Title: Re: Bunch of keysight U1252B meters around
Post by: Terry01 on November 20, 2018, 11:58:46 pm
I'm not trying to be rude it's just the truth. If you are about to give an answer that is really obvious to everybody, then you're probably missing something.

The problem was always there, but I couldn't say for certain that it wasn't user error, or crap battery. I didn't deal with it straight away so shame on me.  I only now discovered the cause more than a year later.

I'll open it up and take a closer look. Hopefully it's repairable.

If that's the case, then the truth is, i shouldn't have bothered myself trying to be nice and help you and just called you a "clown" for not checking it ASAP considering it came from ebay. What a moron!

Since you've decided being brutally honest is best, i think your an "ignorant so & so" who will never admit when they are wrong so lets just ignore each other from here on in and we'll get on fine!

Hope you break a nail opening your bust meter!
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 21, 2018, 07:18:34 am
Quote from: tooki
You didn't state originally when you got it, or how
Again, this entire topic is about specific eBay listing by a particular seller. I described my original purchase a page or two back in a long post. Several paragraphs.

i shouldn't have bothered myself trying to be nice and help you and just called you a "clown" for not checking it ASAP considering it came from ebay. What a moron!

Since you've decided being brutally honest is best, i think your an "ignorant so & so" who will never admit when they are wrong so lets just ignore each other from here on in and we'll get on fine!
Call me whatever you like if it makes you feel good. I will be the first to admit when I'm wrong.  In fact, I already did, if you hadn't noticed. The thing is, I wasn't expecting sympathy. I was just sharing my experience with the other buyers. The knob shouldn't fail on a $700 meter. Now I'm going to cry myself to sleep about you ignoring me.
Title: Re: Bunch of keysight U1252B meters around
Post by: rsjsouza on November 21, 2018, 12:39:20 pm
Folks, let's simmer down, please.

timelessbeing, although the thread talks about meters purchased at eBay, it is not uncommon for people to do cross posting without regard for the main subject - you've been long enough on this forum to realize that.

That is probably what Terry01 was alluding with his reference to simply return it, added to the fact that you mentioned a "New in box" and $700 meter 1-1/2 year after the initial post (as also said by tooki). From my POV I agree with them that a bit of context was necessary, but only due to past history of cross posting by other users.

On the other hand, in a bad day I could see Terry01's reply as sarcastic or dismissive, but to be honest not much else.
Title: Re: Bunch of keysight U1252B meters around
Post by: Terry01 on November 21, 2018, 02:34:08 pm
Folks, let's simmer down, please.

timelessbeing, although the thread talks about meters purchased at eBay, it is not uncommon for people to do cross posting without regard for the main subject - you've been long enough on this forum to realize that.

That is probably what Terry01 was alluding with his reference to simply return it, added to the fact that you mentioned a "New in box" and $700 meter 1-1/2 year after the initial post (as also said by tooki). From my POV I agree with them that a bit of context was necessary, but only due to past history of cross posting by other users.

On the other hand, in a bad day I could see Terry01's reply as sarcastic or dismissive, but to be honest not much else.

Spot on!  :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on November 21, 2018, 03:43:50 pm
Quote from: tooki
You didn't state originally when you got it, or how
Again, this entire topic is about specific eBay listing by a particular seller. I described my original purchase a page or two back in a long post. Several paragraphs.
Bruh… :palm:  no, not "a page or two" back. Twelve pages back, 20 months ago (https://www.eevblog.com/forum/testgear/bunch-of-keysight-u1252b-meters-around/msg1164897/#msg1164897). From your mention of "new in box", etc., there was absolutely no reason for anyone to assume this was an old purchase and go back through the thread. You made it sound like a recent purchase, and as I said, that's on you. Stop trying to portray it as others' laziness when it's your lousy wording and bad attitude that's caused this kerfuffle.

Nor is there any requirement that posts in this thread be from people who bought from this eBay seller, anyway!
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 21, 2018, 08:27:33 pm
Hmm , 12 pages back eh. Ok that's further than I thought "bruh".

But all the context was right there on the same page. In fact the seller himself is advertising there.

"Just return it" is just a stupid answer.
Title: Re: Bunch of keysight U1252B meters around
Post by: tooki on November 21, 2018, 10:11:39 pm
No it’s not when you describe it as “new in box”. That implies a recent purchase. You cannot expect people to infer from “new in box” that you bought it 20 months ago.
Title: Re: Bunch of keysight U1252B meters around
Post by: Terry01 on November 21, 2018, 10:34:02 pm
Hmm , 12 pages back eh. Ok that's further than I thought "bruh".

But all the context was right there on the same page. In fact the seller himself is advertising there.

"Just return it" is just a stupid answer.

It's not me that's got a duff meter, so as it turns out your not looking too bright yourself are you Einstein?

The only "stupid" thing I did was waste a couple mins trying to help you.

Like I said before a duff meter is good enough for you! I hope the next one you buy is a duffer too!

I won't waste another second on you, your obviously a stubborn old fool who thinks everyone else is wrong barring you! The posts are here for everyone to make their own mind up and I doubt the other people would have posted did so thinking they'd jump on the "wrong wagon" with you.

That's good enough for me!

Thread will now be ignored and thanks very much guys for trying to make this old fool see sense too. I feel it's a lost cause unfortunately  :(
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on November 22, 2018, 11:55:50 am
Hmm , 12 pages back eh. Ok that's further than I thought "bruh".

But all the context was right there on the same page. In fact the seller himself is advertising there.

"Just return it" is just a stupid answer.

It's not me that's got a duff meter, so as it turns out your not looking too bright yourself are you Einstein?

The only "stupid" thing I did was waste a couple mins trying to help you.

Like I said before a duff meter is good enough for you! I hope the next one you buy is a duffer too!

I won't waste another second on you, your obviously a stubborn old fool who thinks everyone else is wrong barring you! The posts are here for everyone to make their own mind up and I doubt the other people would have posted did so thinking they'd jump on the "wrong wagon" with you.

That's good enough for me!

Thread will now be ignored and thanks very much guys for trying to make this old fool see sense too. I feel it's a lost cause unfortunately  :(
Rab, is that you?
https://www.youtube.com/watch?v=6oU3p4fSjxI (https://www.youtube.com/watch?v=6oU3p4fSjxI)
Title: Re: Bunch of keysight U1252B meters around
Post by: Pete2 on November 23, 2018, 05:29:15 am
I have one of these meters bought new years ago for work. And I'll never get a one with a charging function again! The meter cooks the NiMH battery, i.e. it clearly overcharges it (yes, battery voltage set correctly at 8.4 V). I had one that got so hot during charging the label melted. And also, the battery life sucks (partly because of the self-discharge if not used).

Other than that, it seems like a very accurate meter, although a bit annoying is that AC voltage is the first in the rotary from OFF so most of the time you have to turn it twice (I hardly ever measure AC). And continuity is always via Shift, defaults to Ohms.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on November 23, 2018, 05:53:16 am
Cooking the battery is a defect. I sent mine back for a replacement.
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 23, 2018, 08:29:31 am
Mine gets hot too. The manual says it trickle charges once the battery is full, but even the trickle current must be pretty high.
Title: Re: Bunch of keysight U1252B meters around
Post by: Gandalf_Sr on November 23, 2018, 01:23:10 pm
I bought a new rechargeable battery for mine and plug it in once every blue moon but I take it off as soon as it beeps at me that it's charged.  I also discovered that you can plug in to charge from any old bench PSU, just set the right voltage and off you go.  I guess this must've pre-dated the era when the PSU 'talked' to the device and refused to work if it wasn't the actual manufacturers charger (like Apple do now).
Title: Re: Bunch of keysight U1252B meters around
Post by: chronos42 on November 23, 2018, 06:27:03 pm
Mine gets hot too. The manual says it trickle charges once the battery is full, but even the trickle current must be pretty high.

Hi,

i bought two of these mysterious NOS 1252B from the well known US seller. Both meters seems not pre used and worked perfectly, excecpt the accu, the powerex accus were completely dead. I replaced the accus and also found out that they are running hot after charging.

I don't want blame the seller for this issue and also I don't want send the meters back in the US, so I reverse engineered the charge circuit and found an easy solution for the problem.
In short words: There is an issue with the mosfet that switches the charge current off after the charging is completed. The Ugs cutoff voltage from the build in mosfet does not fit to the actual cutoff voltage from the controller circuit.

To solve this problem I had to modify one resistor.
Change R13 (showed in the attached picture) to 20k.
That worked for my meters without any unwanted side effects.
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 23, 2018, 07:45:56 pm
Thanks. Nice work. What is the original resistor value? Did you draw a schematic?

The powerex in mine seemed dead too. I "recovered" it by forcing a higher voltage into it.
Title: Re: Bunch of keysight U1252B meters around
Post by: chronos42 on November 23, 2018, 07:50:43 pm
Hi,

sorry I have forgotten the original value and lost my handwritten schematics, I did this about one year ago.
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on November 24, 2018, 02:42:55 am
Nice find, chronos. I sent mine back to Keysight since they said that they wanted to see what the cause of the problem was. They never told me what the problem was. They just gave me a new meter. Of course, that's only useful if you're not too far from one of their locations.

Thanks for sharing your fix. :-+
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on November 24, 2018, 07:52:03 am
bitseeker, how old was your meter and what was the warranty status? Did you also buy yours from the ebay seller nmori?
Title: Re: Bunch of keysight U1252B meters around
Post by: bitseeker on November 24, 2018, 05:20:56 pm
Mine was still under warranty at the time. I bought it before this eBay deal was available.
Title: Re: Bunch of keysight U1252B meters around
Post by: 1design on November 25, 2018, 04:39:17 pm
The original resistor is 100k. I replaced mine with a 22k I had at hand, will see if it helps next time I charge it. Thanks for the mod!

Title: Re: Bunch of keysight U1252B meters around
Post by: Lincent on April 30, 2019, 04:55:30 pm
I put the Li-ion battery purchased on Aliexpress. Measured capacity 650 mah.
Built-in PCB protects against overcharging at 8.44 volts, and against overdischarge.
It is perfectly charged by the built-in charging of the meter U1252A and there is no danger of overcharging.
In the photo the charge limit and the type of viscera.
Title: Re: Bunch of keysight U1252B meters around
Post by: timelessbeing on April 30, 2019, 09:25:25 pm
Thanks. What was the price? Can you give a link please?
Title: Re: Bunch of keysight U1252B meters around
Post by: Lincent on May 01, 2019, 12:09:16 am
I took a year ago, 2 pcs at a discount for 10 USD this product (https://ru.aliexpress.com/item/2pcs-Doublepow-1000mAh-9V-Lithium-Battery-Li-ion-LSD-Rechargeable-Battery-with-1200-Cycle-for-Multimeter/32827433230.html). Now the price is about 7 USD for 1 pc.

I found my review to the seller for this purchase:
Quote
600-650mAh battery instead of the declared 1000mAh. This is very bad. In the photo measurement. Discharged with current 150 mA fore disconnecting with built-in protection at 5.72 volts. Charged with an initial current of 150mA with a voltage of 8.47 volts. When charging / discharging 8.4-6.0V, the capacity will be approximately 0.6Ah, so be careful that it does not bulge. Protection shuts off charge at 8.52 volts. Overcharge / discharge protection works. Inside there are two cans of Li 722337 and a protection board. In general, everything is fine, except for capacity. Buy and return on the dispute about 40%.