| Products > Test Equipment |
| AN8008 US $19, 9999count, 1uV, 0.01uA, 0.01Ohm, 1pF resolution meter |
| << < (66/172) > >> |
| Titan 4380:
I received one of these meters about a week ago and feel rather indifferent about it. The first thing that hits you is that it is tiny. If you are used to holding a chunky Fluke in your hand, this thing feels minuscule .Dave's video on this meter is bang on. For the money it is a great meter with surprisingly accurate DC measurements, but I definitely won't be sticking any of its probes into a wall socket. The square wave generator setting does a great job and produces very nice patterns on my 2000 series scope right up to 5000khz with no overshoot or distortion. At the moment Aldi is selling a 6000 count meter that does a ton of things. Even for $25, I haven't done any rudimentary tests on the thing, but I can't see it being too impressive. |
| Fungus:
--- Quote from: Titan 4380 on July 29, 2017, 12:26:29 pm ---I received one of these meters about a week ago and feel rather indifferent about it. The first thing that hits you is that it is tiny. If you are used to holding a chunky Fluke in your hand, this thing feels minuscule .Dave's video on this meter is bang on. --- End quote --- Take a look at the ANENG DT850B+. It's as big as a Fluke and has all the features that are missing on the AN8008 for only $20. (but not real input protection...) |
| evava:
AN8008 problem - bias current on mV range is too big: When meter in mV range, connected 10.1MOhm resistor causes 0.101mV reading - non of my other meters does that to such an extent - it means input bias current is about 10pA! Smaller resistors cause proportionally smaller value on display and vice versa. Can be used for measuring resistors up to 9999MOhms on 99.99mV range, thats nice ;D Can someone check, whether it is just my meter this bad/nice? |
| electronic_eel:
--- Quote from: floobydust on July 22, 2017, 08:14:49 pm ---Temperature - I enabled in EEPROM on the mV function, works °C/°F and factory CJC CAL is already set at 25°C fixed. --- End quote --- Cold Junction Temperature fixed to 25°C? Does that mean there is no thermistor or other means in the ic to measure the temperature inside the multimeter to have a somewhat proper cold junction temp? Or is it just that you calibrate the proper cjc at 25°C? |
| floobydust:
--- Quote from: evava on July 29, 2017, 06:14:18 pm ---AN8008 problem - bias current on mV range is too big: When meter in mV range, connected 10.1MOhm resistor causes 0.101mV reading - non of my other meters does that to such an extent - it means input bias current is about 10pA! Smaller resistors cause proportionally smaller value on display and vice versa. Can be used for measuring resistors up to 9999MOhms on 99.99mV range, thats nice ;D Can someone check, whether it is just my meter this bad/nice? --- End quote --- I also measure 0.100mV across a 10MEG resistor, for 10pA or 0.01nA leakage current. Second try it hones in on -0.135mV. Using no leads and Faraday shield. Johnson-Nyquist noise of a 10MEG resistor is significant here. Try add a disc cap in parallel ;) |
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