Products > Test Equipment

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

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deflicted:
Anybody measure the open circuit voltage in diode test mode yet? Neither the eBay listings nor the specs on the Zotek site seem to give a value for that.

ocw:

--- Quote ---Anybody measure the open circuit voltage in diode test mode yet? Neither the eBay listings nor the specs on the Zotek site seem to give a value for that.
--- End quote ---

The diode test voltage is 3.223 volts.
The short detect voltage is 1.0070 volts.
The k ohm resistance measurement voltage appears to be the same 1.0070 volts.
The M ohm resistance measurement voltage is 0.5309 volts.

ocw:

--- Quote ---The M ohm resistance measurement voltage is 0.5309 volts.
--- End quote ---

I was going too fast on that one--the M ohm resistance measurement voltage is also 1.0070 volts unloaded.  I forgot to use my high impedance electrometer for that...

deflicted:

--- Quote from: ocw on July 13, 2017, 12:55:49 am ---
--- Quote ---The M ohm resistance measurement voltage is 0.5309 volts.
--- End quote ---

I was going too fast on that one--the M ohm resistance measurement voltage is also 1.0070 volts unloaded.  I forgot to use my high impedance electrometer for that...

--- End quote ---

Thanks. I was kind of scratching my head about that, wondering why a DMM would output a lower voltage for a M ohm range than for a k ohm range. I don't know enough to know whether or not you'd expect that in a DMM, but it seemed counterintuitive.

RedSky:
How noisy is the meter when measuring microvolts?   say shorting the leads what does the display read?
I'd like to see the accuracy comparison with a high end bench or hand held multimeter at the microvolts level.  I mean i'm not expecting much considering its a $20 meter, but a bit of fun to see.

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