zamproject
Well-known member
- Joined
- May 11, 2010
- Messages
- 1,514
Hello
I just get this LCR meter and I have question about lowers capacitor setting.
I'm not 100% sure mine work properly.
@11nF range (1pF resolution) the meter show about 180p unstable (unloaded prob)
datasheet say +/-5% +100pF (parasitic capacitance ?)
I have more with 180p on the screen
I was extrapolating by reading spec that I should take measure and subtract 100p to have a result, but it seem I better always use the REL (relative) function to measure in the pico range. (pres REL to read 0 on screen, then measure)
Same apply for the second lowest 110nF range (10p resolution) where meter show 000.40 (40dgt ?) at start where accuracy is given for +-5% +15dgt
It somehow make sense for such small range with all possible coupling including the probs, but I want to be sure it's "normal" behaviour, otherwise I return it and ask for a new one.
Cheers
Zam
I just get this LCR meter and I have question about lowers capacitor setting.
I'm not 100% sure mine work properly.
@11nF range (1pF resolution) the meter show about 180p unstable (unloaded prob)
datasheet say +/-5% +100pF (parasitic capacitance ?)
I have more with 180p on the screen
I was extrapolating by reading spec that I should take measure and subtract 100p to have a result, but it seem I better always use the REL (relative) function to measure in the pico range. (pres REL to read 0 on screen, then measure)
Same apply for the second lowest 110nF range (10p resolution) where meter show 000.40 (40dgt ?) at start where accuracy is given for +-5% +15dgt
It somehow make sense for such small range with all possible coupling including the probs, but I want to be sure it's "normal" behaviour, otherwise I return it and ask for a new one.
Cheers
Zam
