Products > Test Equipment
AN8008 US $19, 9999count, 1uV, 0.01uA, 0.01Ohm, 1pF resolution meter
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prof:
Just received mine. A very nice device.

Although I'm using 2 rechargeable AAAs the diode tester has more Oomph than my Fluke. I only did a few quick tests, e.g. I tested the frequency tester quickly against my new frequency generator and it is spot on over the full frequency range it support (seems so be up to around 27MHz here).
Mark Hennessy:

--- Quote from: Fungus on August 30, 2017, 03:16:01 pm ---
--- Quote from: Kalvin on August 30, 2017, 03:00:12 pm ---If you happen to have an excellent AN860B+ and an average AN8008, then the AN8008 may appear to be inferior.

--- End quote ---

That's why I asked what everybody else is seeing.

(I noted in my original post that I'm aware that the meter is in spec)


--- End quote ---

My AN8008 and AN860B+ agree to within +/-1 count on DC volts, and those are within +/-2 counts of the Fluke 187 and BM235 that I've just checked them against. Just a quick test, but earlier, more exhaustive testing didn't raise any concerns. Quite the opposite...
Mark Hennessy:

--- Quote from: prof on August 30, 2017, 06:13:18 pm ---Although I'm using 2 rechargeable AAAs the diode tester has more Oomph than my Fluke.

--- End quote ---

The voltage for diode test is generated by a charge pump and regulator circuit, so is independent of the battery voltage. In a way, it's a shame they didn't make it fractionally higher - say, 3.3V - so people wouldn't assume they're seeing the battery voltage.

On the other hand, the square wave output is a function of the battery voltage.
prof:

--- Quote from: Mark Hennessy on August 30, 2017, 06:27:12 pm ---
--- Quote from: prof on August 30, 2017, 06:13:18 pm ---Although I'm using 2 rechargeable AAAs the diode tester has more Oomph than my Fluke.

--- End quote ---

The voltage for diode test is generated by a charge pump and regulator circuit, so is independent of the battery voltage. In a way, it's a shame they didn't make it fractionally higher - say, 3.3V - so people wouldn't assume they're seeing the battery voltage.

--- End quote ---

Doesn't matter how they do it. My point is it's better than the Fluke despite operating under worse conditions.  ;)
Kalvin:
Quick test: My AN860B+ shows 1.553V, my two AN8008s show 1.555V and 1.554V.
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