Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 1529455 times)

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Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2700 on: October 12, 2017, 04:17:54 am »
I have been fortunately way too busy to notice his deals until the stuff is all gone :)

475 is cleaning up nicely. Did this corner and the CRT bezel today at lunch time:

 

Offline eeviking

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2701 on: October 12, 2017, 04:39:54 am »
My TEA is getting worse... TopLoser is killing me with those prices. Help please!

Me too.  :-DD

The damn pusher got me twice already, and he is offering free shipping on my next fix.  :scared:

Think I have to become a member in here soon. ;D
 

Offline Cubdriver

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2702 on: October 12, 2017, 04:50:12 am »
I have been fortunately way too busy to notice his deals until the stuff is all gone :)

475 is cleaning up nicely. Did this corner and the CRT bezel today at lunch time:

Looks fantastic!  The nice thing about Tek gear of that era is that the panel markings are in the anodizing itself, rather than being silkscreened on, so short of removing the anodizing they should stay in place.

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2703 on: October 12, 2017, 04:52:40 am »
Because I'm careful with my equipment, I bought a case for my Fluke 87V on eBay. That way, I'm sure it will be safe when it's not in use. Today, I got my 87V out and what do you know: black marks on both sides of the holster from the strap of the case. I've been trying to get them off with soap, methanol or gentle scraping, but no dice. It looks like they're here to stay.

Sometimes you just can't win. Stuff like this kills me.

My TEA is getting worse... TopLoser is killing me with those prices. Help please!
Same here. It's terrible!
That does not sound like Fluke at all, I'd question if the either the meter or the holster are genuine?
Who let Murphy in?
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2704 on: October 12, 2017, 04:56:09 am »
I have been fortunately way too busy to notice his deals until the stuff is all gone :)

475 is cleaning up nicely. Did this corner and the CRT bezel today at lunch time:

Thats really impressive, swap out the BNC's and it'll look like new, great job  :-+
Who let Murphy in?
 

Offline Mr. Scram

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2705 on: October 12, 2017, 05:02:30 am »
That does not sound like Fluke at all, I'd question if the either the meter or the holster are genuine?
The meter and accessories came in the original box and there is nothing that makes me doubt whether its genuine. It all seems to add up, right up to the brand of the battery. I've taken apart the meter to check the board revision too. It would highly surprise me if the holster would be counterfeit.

I've heard about these holsters tarnishing easy before, or more specifically, being next to impossible to clean if tarnished by the wrong thing. It could be very well that the case was badly manufactured or is still outgassing and somehow reacted with the holster.
 

Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2706 on: October 12, 2017, 05:18:37 am »
I have been fortunately way too busy to notice his deals until the stuff is all gone :)

475 is cleaning up nicely. Did this corner and the CRT bezel today at lunch time:

Thats really impressive, swap out the BNC's and it'll look like new, great job  :-+

Unfortunately they are Tek special ones. The ring around the base is the probe sense ring which is used to identify 1x vs 10x probes which makes them difficult to replace. I'll get the Dremel out and polish them up with a little bit of silvo - should do the trick :)
 

Online tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2707 on: October 12, 2017, 05:34:29 am »
Unfortunately they are Tek special ones. The ring around the base is the probe sense ring which is used to identify 1x vs 10x probes which makes them difficult to replace.
Really ?
This I never knew, impressive for such an old scope.  :-+

Cleaning up well.....I guess you'll hang on to this one.
Avid Rabid Hobbyist
 

Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2708 on: October 12, 2017, 05:38:47 am »
Yeah it was a pretty early invention for Tek. I think it appeared on the early 7000 series units as far back as 1969!

I'm going to the grave with this one.
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2709 on: October 12, 2017, 05:59:53 am »
What do you think about the Tek 2645, some people think it may be one of the best, if not the best scope they made?, 300Mhz and 4 channels?
Who let Murphy in?
 

Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2710 on: October 12, 2017, 06:21:04 am »
What do you think about the Tek 2645, some people think it may be one of the best, if not the best scope they made?, 300Mhz and 4 channels?

I like those and the 485. The probes for the 2465's 2+2 channels can be expensive :(
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
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Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2711 on: October 12, 2017, 07:37:04 am »
They’re ok but I’d avoid them for amateur use. They are stacked full of hybrids and ASICs and Dallas NVRAM

The best scope ever made was the 7104 with a 7A29 and 7B10 or a sampling plugin.  Then another shittier 7000 series next to it with a 7L14 SA.

My wife assures me I don’t have the room for them. She’s right :(
 

Offline Mr. Scram

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2712 on: October 12, 2017, 07:52:05 am »
I very gingerly tried to clean the marks off the 87V holster with a scouring pad. The result is that I now have a holster with marks and small scratches.

Today is a write-off. I'm very close to just ordering a spare holster for a ridiculous amount of money, but I know I'd better have a good night's rest first.
 

Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2713 on: October 12, 2017, 08:06:56 am »
My old 77 never had a holster. If it's going to live on the bench, take it off and don't worry about it :)

Incidentally if you want to clean these, chuck the holster in a bowl of water with dish soap for a couple of hours and then all the crud just wipes off.

I am an obsessive compulsive cleaner for ref.
 

Offline khs

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2714 on: October 12, 2017, 08:16:55 am »
The best scope ever made was the 7104 with a 7A29 and 7B10 or a sampling plugin.
I don't agree 100%

My best combination is:
7904, not the 7104 due to the quite sensitive CRT,
7D12/M2 -> get the voltage,
7A26 -> add two channels,
7D15 -> get the frequency and other - and
7B53A. Yes. 7B53A.

The 7D15 together with the 7B53A can count pulses in a burst. For me it's essential. From my knowledge no other oscilloscope can do this.
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2715 on: October 12, 2017, 08:19:30 am »
They’re ok but I’d avoid them for amateur use. They are stacked full of hybrids and ASICs and Dallas NVRAM

The best scope ever made was the 7104 with a 7A29 and 7B10 or a sampling plugin.  Then another shittier 7000 series next to it with a 7L14 SA.

My wife assures me I don’t have the room for them. She’s right :(
You certainly aren't kidding either, just seen inside the bottom of a couple that Dale gad in mailbag section, it's crammed with em, that's off my list then.  :phew:
Who let Murphy in?
 

Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2716 on: October 12, 2017, 08:28:49 am »
Yeah there are a few that aren't very well cooled and tend to blow up as well. Really nice scopes but I wouldn't want to buy one. If I needed one I'd rent one and you can get a nice new mixed signal scope with mega-bandwidth for the same price.

The best scope ever made was the 7104 with a 7A29 and 7B10 or a sampling plugin.
I don't agree 100%

My best combination is:
7904, not the 7104 due to the quite sensitive CRT,
7D12/M2 -> get the voltage,
7A26 -> add two channels,
7D15 -> get the frequency and other - and
7B53A. Yes. 7B53A.

The 7D15 together with the 7B53A can count pulses in a burst. For me it's essential. From my knowledge no other oscilloscope can do this.

I'd go as far as to say all of those and my config next to each other ;)
 

Offline CalMachine

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2717 on: October 12, 2017, 08:29:20 am »
Not your Typical Test Equipment but I like to consider this lucky find, an Artifact! :D

Great Find!  :clap:
..and together with its documentation it's a really precious instrument. Worth the money!  :-+

I have a Philips PM 2535 with a mode for measuring PT100s and show the results in °C with 0.1°C resolution best; that would be like cast pearls before swine.

Do you have an instrument precise enough to use this temperature sensor?
If not so you have to go for it now, urgently!  :popcorn:

I picked up an Instrulab 4221 Thermometer.  It's got accuracies of a few PPM!  I'm in the process of refurbing it
All your volts are belong to me
 

Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2718 on: October 12, 2017, 08:30:29 am »
So we've got volt nuts, time nuts and temp nuts as well now?
 

Offline URI

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2719 on: October 12, 2017, 08:42:18 am »
I picked up an Instrulab 4221 Thermometer.  It's got accuracies of a few PPM!  I'm in the process of refurbing it

Wow, you're in.  >:D

Never heard of an Instrulab 4221. Googled it. Impressive according to the datasheet.  :-+

Yeah, you're going temp-nuts..  :-DD

I'm looking forward to you presenting it here, will you?
A life without TEA is possible but pointless.
 

Offline khs

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2720 on: October 12, 2017, 08:46:58 am »
So we've got volt nuts, time nuts and temp nuts as well now?
You may add HP8152A + HP81521B optical power meter.
 

Online djos

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2721 on: October 12, 2017, 09:23:38 am »
That does not sound like Fluke at all, I'd question if the either the meter or the holster are genuine?
The meter and accessories came in the original box and there is nothing that makes me doubt whether its genuine. It all seems to add up, right up to the brand of the battery. I've taken apart the meter to check the board revision too. It would highly surprise me if the holster would be counterfeit.

I've heard about these holsters tarnishing easy before, or more specifically, being next to impossible to clean if tarnished by the wrong thing. It could be very well that the case was badly manufactured or is still outgassing and somehow reacted with the holster.

I find Isopropyl wipes get almost anything off plastic and rubber cases.
The impossible often has a kind of integrity which the merely improbable lacks.

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Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2722 on: October 12, 2017, 09:28:31 am »
So we've got volt nuts, time nuts and temp nuts as well now?
You may add HP8152A + HP81521B optical power meter.

Photon nuts?
 

Offline CalMachine

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2723 on: October 12, 2017, 09:47:37 am »
I picked up an Instrulab 4221 Thermometer.  It's got accuracies of a few PPM!  I'm in the process of refurbing it

Wow, you're in.  >:D

Never heard of an Instrulab 4221. Googled it. Impressive according to the datasheet.  :-+

Yeah, you're going temp-nuts..  :-DD

I'm looking forward to you presenting it here, will you?

I'll definitely bring a few post-refurb shots here.  There will most likely be a longer thread started in the metrology section!
All your volts are belong to me
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #2724 on: October 12, 2017, 10:21:12 am »
Have we got any truck nuts to go with volt nuts, time nuts and temp nuts??
Who let Murphy in?
 


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