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How to measure AC Signal ?

AlexChao Jun 29, 2011 07:39 AM

I have Sinewave that maximun Amplitude is 5.7V and cycle is 16 ms by Oscilloscope.Please how to measure above it by CR1000 or CR10X? Thanks

Sam Jun 29, 2011 04:00 PM

http://www.campbellsci.com/forum/messages.cfm?threadid=8DE9DF22-D56D-8CAB-250020ECC64DEA76

"We don't get right frequency"

I suggest that you run the signal through a 2:1 voltage divider (cut peak to peak amplitude in half). Then using the PeriodAvg instruction, use the mv2500 range code and increase the number of cycles to average.

aps Jun 30, 2011 08:54 AM

If the signal is 5.7V peak to peak and ground referenced, you can probably get away without using the 2:1 divider. This is because the period averages does not do a full A/D conversion, the range only sets a gain in a preamplifier.

If the signal is not ground referenced the 2:1 divider would be a good precaution.

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