[USRP-users] TwinRx transfert function
Marcus D Leech
patchvonbraun at gmail.com
Wed Nov 6 11:59:34 EST 2019
That is more passband ripple than I would expect.
What is your tunes frequency. What gain setting? Are you getting overruns during the measurement?
Sent from my iPhone
> On Nov 6, 2019, at 6:32 AM, Olivier Ravard via USRP-users <usrp-users at lists.ettus.com> wrote:
> We use X300 with 2 TwinRx boards for acquisitions in L band (UHD 3.10.3).
> It seems that the transfert function of the couple (X300 - TwinRx) shows strong fluctuations.
> To measure these fluctuations, we put a white noise generator at the input (this generator was
> measured before with a spectrum analyser and it show a very flat transfert function over 1 GHz)
> and we measure the PSD of the sampled 80MHz bw signal for the 4 inputs.
> The result is shown on figures below:
> inputs 1 and 2 (first TwinRx):
> inputs 3 and 4 (second TwinRx):
> Are these fluctuations normal ?
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> USRP-users at lists.ettus.com
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