Products > Test Equipment

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

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evava:
Yes, I almost forgot: when you dont understand whats going on, look at it with scope  ;)

Thank you all for explanation!

P.S. no such behavior with my UT61e - maybe it has something with high input impedance (>3GOhm supposedly on 220mV range, so 10MOhm is negligible probably)

JohnPen:
I tried the 10M test with my 8008 with the following results.

10 M carbon film resistor on mV range and resistor connected directly between the sockets on the 8008. The meter was freestanding well away from any other equipment.

Initially reading cycled between -108 mV and -111mV after a few minutes it cycled around -114/116 mV.

Interestingly if one held the resistor's connection to the COM socket between finger and thumb the reading dropped to ~74 mV.

Heating just the resistor a few degrees, as expected, increased the mV reading quite rapidly 200mV plus.

None of this really matters too much for normal everyday use of course.  Still a very useful, versatile meter for low voltage/current electronics work.  Especially for the price.

John

coromonadalix:
There is a new model look a like : SURPEER AV4     it is a 20000 counts model ???? maybe worth checking ? sure it is not a 20$ meter ...

on Ebay: http://www.ebay.com/itm/digital-multimeter-true-rms-4-1-2-voltmeter-with-auto-range-multi-meter/112444656128?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D2%26asc%3D41376%26meid%3Dbdba934ac7de4c11bf5d7231a7c8164c%26pid%3D100005%26rk%3D4%26rkt%3D6%26sd%3D152355178736

ebastler:

--- Quote from: coromonadalix on July 30, 2017, 06:39:49 pm ---There is a new model look a like : SURPEER AV4     it is a 20000 counts model ???? maybe worth checking ? sure it is not a 20$ meter ...

--- End quote ---

Not an AN8008 competitor, due to the price and the larger form factor. But it looks somewhat promising -- might even have proper fuses?
Although the 600V CAT IV rating and the claim that it is "FDA certified" do not instill confidence...  ::)

bitseeker:

--- Quote from: ebastler on July 30, 2017, 06:54:13 pm ---Although the 600V CAT IV rating and the claim that it is "FDA certified" do not instill confidence...  ::)

--- End quote ---

FDA certified! Never saw that before. Apparently, True RMS by Amazon. Excellent. Covering as many bases in one product as possible. ::)

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