On 2022-01-18 11:15, Fabien PELLET wrote:
Sampling rate has no effect as well as the amplitude of the baseband.
Then it may just be non-ideality in the DAC. At -70dBc, it's unlikely
to be digital in nature.
Le 18/01/2022 à 16:45, Marcus D. Leech a écrit :
On 2022-01-18 10:01, Fabien PELLET wrote:
Hello,
When I put a signal generator that produces a sinwave at 1Khz and
that feeds an USRP Sink with a frequency center at 12MHz for
example, I got spurs at +/-32Khz, +/-64KHz and +/-96KHz at the
output of my N210 (used with LFTX and LFRX). Whatever the frequency
center of the USRP and the frequency of the baseband signal, I have
to spurs around -70dBc.
Any idea on where it could come from ? Hardware EMC problem ?
Digital treatment issue ? How to solve it ?
Best regards,
Fabien, F4CTZ
What sample rate? (Does that change things). Also, if you reduce
the baseband amplitude a bit, does that help?
