Author Topic: EEVblog #1007 - Is a $25 Multimeter Any Good  (Read 53688 times)

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Online floobydust

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #450 on: September 17, 2017, 08:28:12 AM »
I have been contacted by  Zotek who claim to be the original designer and manufacturer of the AN8008

What did they say?  :popcorn:

They want to pay me to review their new product  ::)

It seems like a way to get marketing and product exposure.
The fake 61010 claims and poor quality make me ask, how low to go.
Oh wow 10,000 counts and the the rotary switch oxidizes after a couple weeks  :-DD
It's like cheap candy. After the sugar buzz, you faint.

Get a box of them for joeqsmith ;)
 

Online xavier60

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #451 on: September 18, 2017, 06:57:30 PM »
I received a reply from Zotek about the dead spot issue on the millivolt range.
"Thank you for your support to our products. ZT109 can measure voltage larger than 20uV."
This indicates to me that the ZT109 has a +/-20uv dead spot. This would bother me.

« Last Edit: September 18, 2017, 07:00:03 PM by xavier60 »
Hioki AS100D vom, HP 54645A dso, Fluke 87V dmm, AN8008 dmm
 

Offline Fungus

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #452 on: September 18, 2017, 10:12:17 PM »
This indicates to me that the ZT109 has a +/-20uv dead spot. This would bother me.

You buy a $20 meter then can't sleep at night because it has a +/-20uv dead spot? Schadenfreude.
 

Online xavier60

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #453 on: September 18, 2017, 10:20:02 PM »
This indicates to me that the ZT109 has a +/-20uv dead spot. This would bother me.

You buy a $20 meter then can't sleep at night because it has a +/-20uv dead spot? Schadenfreude.
I didn't buy that meter. The meter I did buy, the AN8008, has a +/-5uv dead spot. This isn't a practical problem for what I use it for.
A +/-20uv dead spot could be a problem for what I use the meter for.
The dead spot has been intentionally programmed into the meter.
« Last Edit: September 18, 2017, 10:43:37 PM by xavier60 »
Hioki AS100D vom, HP 54645A dso, Fluke 87V dmm, AN8008 dmm
 

Online floobydust

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #454 on: September 19, 2017, 03:17:10 AM »
The uV deadband seems to be about the DMM IC's quality.

A/D converter and input amp noise, and offset limit the bottom end. Then there is the reference noise also affecting the measurement low end.
The HY12P65 datasheet best is 10uV offset and 2uV noise but some people say the chip-on-board package is lower quality compared to the QFP packaged part.
COB noise is worse, and noise-ranked parts are out there.

So the firmware clips off and filters the uV noise, that seems to be the real "technology" here.
 

Offline Fungus

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #455 on: September 19, 2017, 04:02:42 AM »
We need to step back and look at the forest. At the end of the day it's a $20 meter.

Complaining about stuff like this seems like saying "I bought a Ford Fiesta and it can't even tow a 5000lb boat (can you believe it??)"

 

Offline IanMacdonald

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #456 on: September 19, 2017, 04:05:44 AM »
You buy a $20 meter then can't sleep at night because it has a +/-20uv dead spot? Schadenfreude.

For that price I'm expecting a Higgs detector.  :-DMM

Seriously it's a damn good meter for the money, though temperature would be handy and I'd pay a bit more to have that. Save carrying two meters. 
 

Offline Fungus

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #457 on: September 19, 2017, 06:27:59 AM »
For that price I'm expecting a Higgs detector.  :-DMM

And powered by dilithium crystals.

Seriously it's a damn good meter for the money, though temperature would be handy and I'd pay a bit more to have that. Save carrying two meters.

It's OK, but nothing special apart from the price.

The missing mA range is a bummer I don't see how people can lose sleep over a dead spot in the uV range but not worry about lack of mA. The square wave output is a waste of a selector switch position IMHO.

I actually prefer using my AN860B+ to my AN8008 even though it's bigger. The AN8008 feels really cheap and plasticky in comparison.

I've got my fingers crossed that the AN8008 is just a clever marketing move to sell a load of meters and the 'AN8009' will be the real multimeter - the meter that everybody wanted in the first place, ie. with temperature, mA and the missing REL/MIN/MAX buttons built in. We know the chipset can do it...  :popcorn:

Size-wise, I'd like it to be a little bit bigger than the AN8008. The selector switch could stick out a bit more at the ends instead of having them rounded off into the dial, too.

Also: The AN8008 screen contrast needs a lot of work and the backlight is pathetic.

 

Online xavier60

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #458 on: September 19, 2017, 09:26:35 AM »
Regardless of the low price of these meters, the dead spot is present due to manufactures' choice.
The 1uv resolution is very useful to me for finding shorts on laptop main boards by tracing ground plane voltage drops,
by comparing quick readings.
A slow zero offset drift is no problem. A large +/-20uv dead spot could be a problem. Offset drift will be adding or subtracting to this dead spot.
The AN8008 in Dave's review doesn't seem to have any dead spot.
I didn't buy the AN8008 just because it was cheap. I mainly use Fluke 87V DMMs.
Hioki AS100D vom, HP 54645A dso, Fluke 87V dmm, AN8008 dmm
 

Offline plazma

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Offline Mark Hennessy

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #460 on: October 27, 2017, 08:00:36 PM »
Interesting...

This one adds:

+ Temperature (interesting probe, looks better than the usual exposed bead type)
+ 99.9Mohm range (the 9.99M of the AN8008 is a pain)
+ NCV detection (I don't use this much on DMMs, preferring a dedicated volt-stick, but the chip supports it, so why not?)

And removes:

- Square wave generator. Not a loss IMHO, but others might miss it.

But no changes to the current ranges. An opportunity wasted, sadly - personally I would have preferred them to use the switch position for a mA range rather than the NCV function, but can only assume it was easier for them to do what they've done. Oh well - roll on AN8010 ;)

I'll certainly pick one of these up. I also have a BSIDE ZT301 on the way, so will be adding these to my reviews (along with another half-dozen meters that have arrived since the last update).
 
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Offline Fungus

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #461 on: October 27, 2017, 08:23:55 PM »
New AN8009 version coming to Banggood
https://www.banggood.com/ANENG-AN8009-True-RMS-NCV-Digital-Multimeter-9999-Counts-Backlight-AC-DC-Current-Voltage-Tester-p-1216900.html

With zipper case, NCV and temperature probe. Cool.

I can hear a million AN8008 owners preparing to buy more meters.

(Still no 10mA/100mA ranges though. Or Rel button. Maybe they'll be in the next version, right? The ANENG marketing department is truly the Apple of the multimeter world  :popcorn: )
 

Offline Mark Hennessy

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #462 on: October 27, 2017, 09:33:11 PM »
I can see that case being used with other meters - it's far too big for the AN8009. From the photo, it looks pretty good for a freebie...

Hopefully the meter will be available without all the accessories for less money.
 

Offline Fungus

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #463 on: October 27, 2017, 10:57:17 PM »
I can see that case being used with other meters - it's far too big for the AN8009.

Looks like the meter would fit in sideways.

 

Offline kerrsmith

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #464 on: November 10, 2017, 03:08:07 AM »
Just thought I would mention that Banggood currently have the ANENG AN8008 multimeter on offer with a 25% discount making it about 14 UK pounds:

https://www.banggood.com/ANENG-AN8008-True-RMS-Digital-Multimeter-AC-DC-Current-Voltage-Resistance-Frequency-Capacitance-Test-p-1157985.html?p=2D100314686672015046

This seems to be a really good price for this meter and is the lowest I have seen it - I am always checking their latest deals and this one looks great.
 

Offline Fungus

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #465 on: November 10, 2017, 03:13:51 AM »
Just thought I would mention that Banggood currently have the ANENG AN8008 multimeter on offer with a 25% discount making it about 14 UK pounds:

They just released the AN8009 so that's to be expected.

 

Offline kerrsmith

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #466 on: November 10, 2017, 10:20:23 PM »
Just thought I would mention that Banggood currently have the ANENG AN8008 multimeter on offer with a 25% discount making it about 14 UK pounds:

They just released the AN8009 so that's to be expected.

I had not seen this new model - thanks for letting me know about it. I recently bought the Aneng AN860B+ after reading the reviews on the following site about it:

https://www.markhennessy.co.uk/budget_multimeters/aneng_an860bplus.htm

I also bought a cheapish voltage reference (AD584) to test my multimeters with and this new one was spot on compared to the 'data sheet' that came with the reference.

I always find it quite tricky to decide on what version of a new bit of equipment to buy when there are multiple subtle differences between them so when meters are at these prices it is not too hard a decision to just get more than one.
 

Offline Fungus

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #467 on: November 10, 2017, 10:30:10 PM »
They just released the AN8009 so that's to be expected.

I had not seen this new model

It's only just been released

I recently bought the Aneng AN860B+ after reading the reviews on the following site about it:

I'm a fan of the 860B+.
 

Online JXL

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #468 on: November 12, 2017, 11:33:14 AM »
New AN8009 version coming to Banggood
https://www.banggood.com/ANENG-AN8009-True-RMS-NCV-Digital-Multimeter-9999-Counts-Backlight-AC-DC-Current-Voltage-Tester-p-1216900.html

Ordered the AN8009 after I saw this.  Arrived today.  Temperature measurements in C and F in whole numbers only.  100Mohm range works.  Same 5uV deadband as AN8008.
 

Offline Brumby

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #469 on: November 12, 2017, 11:52:39 AM »
Ordered the AN8009 after I saw this.  Arrived today. 
:-+

Quote
Temperature measurements in C and F in whole numbers only. 
Unfortunate - but, for the number of times I would use it, not a deal breaker.

Quote
100Mohm range works. 
Nice, but I can't remember the last time I measured above 5M - and if I want to do insulation testing, I'd like a few more volts behind it.  There will be some who will find this useful, though.

Quote
Same 5uV deadband as AN8008.
Seems I'll just keep to my AN8008 then.
« Last Edit: November 12, 2017, 11:54:31 AM by Brumby »
 

Offline kerrsmith

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #470 on: November 17, 2017, 09:00:40 PM »
The new ANENG AN8009 is currently on offer on Banggood for 15.42 UK pounds:

https://www.banggood.com/ANENG-AN8009-True-RMS-NCV-Digital-Multimeter-9999-Counts-Backlight-AC-DC-Current-Voltage-Tester-p-1216900.html?p=2D100314686672015046

This is quite a bit lower than on other sites at the minute and looks like it is part of their 'Black Friday' sale. As this item is on offer you can not use any points or coupons on it but the price is still pretty good.

I have been using my ANENG AN860B+ quite a bit in the couple of weeks I have had it and I am really happy with it. Until now I have been using some much cheaper multimeters which worked perfectly well but I recently needed to calibrate a temperature sensor and they did not have enough resolution on the voltage range to get it quite right.

I also saw that the ANENG AN8008 is still on offer:

https://www.banggood.com/ANENG-AN8008-True-RMS-Digital-Multimeter-AC-DC-Current-Voltage-Resistance-Frequency-Capacitance-Test-p-1157985.html?p=2D100314686672015046

I actually bought this the other day as I had quite a few points available and they made it just over 11 UK pounds. I have been looking at the differences between this and the new version and they are very similar but the new one has a resistance range up to 99.99M ohms and it also measures temperature. The older version does have a square wave output function though which could be handy sometimes.

My poor old multimeters which have served me so well for years are now slowly getting pushed further back in the draw where I keep them as my new ones arrive.
« Last Edit: November 24, 2017, 09:47:37 PM by kerrsmith »
 

Offline DavisLV

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #471 on: November 23, 2017, 10:37:16 AM »
Has anyone tested AN8009 in lab conditions (with precise calibration references and/or high-end reference meter) - is it as precise as AN8008?
And what about precision of the 100M range?
 

Offline tzok

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #472 on: November 25, 2017, 09:48:54 AM »
I've noticed that my AN8008 has some small GUI bug - when I press range switch for a first time, the display changes from AUTO to MANUAL, but when I press it for a second time the MANUAL disappears from the screen and never reappears again as long as meter stays in MANUAL mode. Also there seems to be no way to go back to AUTO mode other than by changing function or DC/AC mode.
 

Offline kerrsmith

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #473 on: November 29, 2017, 01:15:02 AM »
I've noticed that my AN8008 has some small GUI bug - when I press range switch for a first time, the display changes from AUTO to MANUAL, but when I press it for a second time the MANUAL disappears from the screen and never reappears again as long as meter stays in MANUAL mode. Also there seems to be no way to go back to AUTO mode other than by changing function or DC/AC mode.

I have watched quite a few Youtube videos on this multimeter and have seen this mentioned several times. It seems to be that once in manual range mode you need to physically move the dial to get out of it as you have noticed yourself. I guess it could be called a bug (or maybe a missing feature?) as it would be handy to toggle the manual range mode on and off but for me I just turn the dial to reset it.
 

Offline tzok

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Re: EEVblog #1007 - Is a $25 Multimeter Any Good
« Reply #474 on: November 29, 2017, 04:11:31 AM »
It seems to be that once in manual range mode you need to physically move the dial to get out of it as you have noticed yourself. I guess it could be called a bug (or maybe a missing feature?)
By bug, I meant the fact, that MANUAL sign disappears after changing range with RANGE button.
 


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