06-13-2018 02:01 AM
Hi
I am trying to acquire constant Analog signal of 65mV from a sensor to computer through PCI-6143 and for that used a DAQmx.
However the signal is constant but during acquisition it seems its oscillate, Here picture attached. How i can acquire constant signal without averaging.
I have tried, sample on demand,continuous sample and N samples mode but in every condition signal is varying.
Need suggestion to resolve error, without averaging my signal.
thanks in advanced
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06-13-2018 02:21 AM - edited 06-13-2018 02:25 AM
It looks like you may be picking up some 50Hz mains ..?
An article here about making analog measurements may help.
http://www.ni.com/tutorial/7113/en/#toc2
06-13-2018 02:23 AM
In multimeter its shows me constant values.
06-13-2018 02:27 AM
What type of sensor are you using ?
06-20-2018 10:59 PM
Thanks budy....
it was 50 Hz noise. It was coming from external power supply of my sensors and due to that original signal was continuously fluctuating.