low-frequency noise on 6036E

[icmems]

I have a DAQcard 6036E that I have used occassionally over the years, and it seems to have a consistent problem: Regardless of the machine I use it on (laptop, desktop, etc.) there is ALWAYS a lot of low frequency noise... especially it seems high in the 20-30Hz range.

I see this noise with BNC-2110 connected, CB-68LP connected, nothing connected...

My questions are:

1. Do you know the source of this noise? (defect on the board, noise from computer bus, ...)

2. Is this a known problem?

3. Is there any way to get rid of it so I can measure the signals I want that are mostly in this frequency range?

[Sean_N]

-What is the environment in which you are doing your tests?

-Do you see this noise on both input and output?

-What are you measuring/generating?

Thanks,

Sean