Hi,
I am using the attached vi (modified from sound and vibration toolkit), on the 6221 DAQ.
I am using the output channels and input channels as suggested.
I am using an RC circuit (1kohm, 1mF) in serie to test it.
Yet, I have quite a few issues in choosing the best mode (RSE, NRSE, differential, pseudodifferential...).
Currently, in RSE, I have an issue in AI1 : even when the wire is not connected, I am still recording a signal quite similar to AI0. I am actually reading it from any channel not connected. It is not noise because It has the same sine wave oscillations, and offset.
I assume this could be due to grounding issue, which I don't know much about. Any clue/suggestion on that matter?
Regards,
Kentmey
Kentmey