Hi guys,
So I mainly worked with a DAQ that has anti aliasing filters already (4472B). Recently, we switched to 16 bit DAQs that does not have any signal conditioning. As a first step, I wanted to get an idea of noise floor so I attached a 50bohm to the input and measured the power spectrum at different sampling rate. What I found is that the noise floor changes as a function of the sampling rate, as the sampling rate is decreased the noise floor is increased.
As this point am not sure what is causing that, aliasing! maybe, I do not know.
Can you please help explaining this to me.
Thanks
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