Products > Test Equipment

AN8008 US $19, 9999count, 1uV, 0.01uA, 0.01Ohm, 1pF resolution meter

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Andrey_irk:
Did someone measure temperature stability of the meter? Will it be within specs at say 0C or +40C?
Although I think it is possible to just put in better resistors if you really need it. The reference seems to be OK.

Square wave generator is useful for checking different speakers and buzzers. I'm surprised nobody pointed it out.

P.S. It's funny to see people here discussing a thread on kazus.ru. But yeah, their discussion seems to be the most comprehensive one on that matter. I can try to translate something for you if google fails.

Fungus:

--- Quote from: ocw on July 15, 2017, 01:33:31 pm --- Being required to get a different meter when a reading which you are peaking goes above 1 mA doesn't make sense.

--- End quote ---

True, but owning a second meter is almost a requirement anyway and this one measures everything else] about as well a a 7.5 digit bench meter (according to Dave's video).

For $17-18? Owning one of these is a no-brainer. I'd almost go as far as saying "it's a UT61E killer for a quarter of the price".

(until the next one comes along - this is ANENG's third meter this year based on this chipset)



--- Quote from: Andrey_irk on July 15, 2017, 01:45:19 pm ---Square wave generator is useful for checking different speakers and buzzers. I'm surprised nobody pointed it out.

--- End quote ---

I did, in the main thread.  :popcorn:

tronde:

--- Quote from: matura713 on July 15, 2017, 06:03:30 am ---
yes, but isn't the chipset/hardware difference only that "square wave output" feature on AN8008 (ZT109)? and everything else is exactly the same? I mean (AN8002 + EEPROM hack to 9999 counts) is equal to (AN8008 - digital square wave feature) or there is real difference in accuracy? (BTW, on first glance even both PCBs of AN8008 and AN8002 looks very very similar).

--- End quote ---

You can't get a 9999 reading of AC voltage with the DTM0660 chipset. Around 8500 seems to be the limit, depening of the crest factor.


Reading and writing the PROM in DTM0660 is easy. Even I have managed that.

https://www.eevblog.com/forum/testgear/hacking-the-victor-vc-921/


tronde:

--- Quote from: Fungus on July 15, 2017, 11:00:17 am ---
 And ... what the hell is this? I never saw that on a meter before.


--- End quote ---

The datasheet says battery test for 9V and 1.5V. I guess 40mA load for 1.5V and 24mA for 9V.

matura713:

--- Quote from: tronde on July 15, 2017, 03:45:50 pm ---
You can't get a 9999 reading of AC voltage with the DTM0660 chipset. Around 8500 seems to be the limit, depening of the crest factor.


--- End quote ---

thanks, that means DM1106EN is really upgraded version of DTM0660...

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