12 May
2016
12 May
'16
9:04 a.m.
Hi,
Are these lines to be expected?
Yes, those dongle are cheap for a reason and so they're have DC offset
and 1/f noise near the edges and non-flat frequency response.
So whatever bandwidth you choose you'll always "see" them, just with a
different intensity.
Cheers,
Sylvain