At 30MSPS are you seeing any overruns? What is your master clock rate? Sent from my iPhone
> On Mar 26, 2021, at 2:41 PM, Julian Arnold <[email protected]> wrote: > > Chris, > > I would say that your EVM is mainly affected by your SNR and your digital > receiver implementation (AGC / filters / clock recovery / equalizer / ...). > So without more details it’s going to be hard to say if what you are seeing > is within limits. > > Cheers, > > Julian Arnold, M.Sc > >>> Am 26.03.2021 um 18:29 schrieb [email protected]: >>> >> >> I'm capturing a 3 GHz QPSK signal with 5 MHz symbol rate by sampling the >> signal at 6 times the symbol rate. The B210 is externally referenced to a >> very clean 10 MHz reference. My measurements of the EVM sampling the signal >> for ~0.5 seconds are pretty poor ~30-40%. I can provide more setup details >> but I'm wondering if others can comment on what EVM I can expect. I'm hoping >> this isn't a fundamental limitation of this hardware system. >> >> >> >> Thanks, >> >> Chris >> >> _______________________________________________ >> USRP-users mailing list -- [email protected] >> To unsubscribe send an email to [email protected] > _______________________________________________ > USRP-users mailing list -- [email protected] > To unsubscribe send an email to [email protected]
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