On 16/08/2011 3:20 PM, Isaac Gerg wrote:
I fixed it by ensuring that the sample rates were correct in the
blocks. I was requesting a fs of 100 Hz but was getting something
around 190kHz. Once i got these numbers all synced up (to the 190kHz)
the blocks worked as expected.
Isaac
The Fs on the FFT and Waterfall graphs is used to calculate the labels
for the X-axis, and also some internal decimation, but it doesn't force the
incoming stream to be arriving at that sample rate. It must match
the actual sample rate, which on the N2XXX is a minimum of
100e6/512 = 195312 Sps.
If you need to process samples at some rate other than one of the
properly-decimated rates coming out of a UHD source block, you'll
have to resample within the flow-graph. I like to use the fractional
interpolator myself.
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