ni pxi 6221 daq card internal dc offset is appearing in every signal

[rachadeepak]

sir ,

thank u for the quick response from ni , please reply for my first question , i.e there is internal dc offest value of around 0.35 volts appearing with every signal when i try to measure it with a pxi 6221 multi fuction daq card and ni elvis oscilloscope or  oscilloscope to observe it . even though the the dc offset is zero from the source  side (arbitray waveform genertor).

[Sean_C.]

Hello,

What is your arbitrary waveform generator's product number?  Have you tried calibrating the arb?

Regards,
Sean C.