-20dBM is loud. Try backing the generator down to -40dBm
Sent from my iPhone > On May 5, 2019, at 12:14 PM, franz kurniawan <[email protected]> > wrote: > > I set the generator at -20db and b200 gain at 50.. > I check that there is no cutoff at the usrp output and the input to AM demod > block.. > > Below are the setting of uhd block in gnuradio > Samp rate 500k > Output type float32 > Sync PC clock > Clock rate 10 Mhz external > Freq 121MHz > Gain 50 > Ch0 Bandwidth 200000 > > > Thank you > >> On May 5, 2019 11:05 PM, "Marcus D Leech" <[email protected]> wrote: >> What output level for the generator? What gain setting on the b205? >> >> >> Sent from my iPhone >> >>> On May 5, 2019, at 11:58 AM, franz kurniawan <[email protected]> >>> wrote: >>> >>> So, i try to make AM receiver.. >>> And the resulted demodulated audio was distorted from its original signal.. >>> So, at this experiment i used signal generator to make AM with sine wave >>> modulated signal.. >>> I expect to get pure sine wave signal after AM demod process.. >>> However, the sine wave is distorted as attached picture >>> >>> I compared with another brand SDR and can get my expected signal.. >>> So i guess there is some problem with the b210mini >>> >>> Thank you >>> >>> >>> >>> On May 5, 2019 10:28 PM, "Marcus D. Leech via USRP-users" >>> <[email protected]> wrote: >>>> On 05/05/2019 10:53 AM, franz kurniawan via USRP-users wrote: >>>> Dear USRP users, >>>> >>>> I used b210mini and encounter I/Q imbalance as below picture.. >>>> As a result, the analog signal demodulation was distorted and result a >>>> crappy sound.. >>>> I >>>> Is there any workaround regarding this issue? >>>> >>>> Thank you >>>> >>>> >>> Not sure what you mean. The I/Q seem to be about 90deg out of phase wrt >>> one another, which is exactly what you'd expect. >>> >>> Could you describe what it is you're trying to do? Something with an audio >>> demodulator? >>> >>> >>> >>> _______________________________________________ >>> USRP-users mailing list >>> [email protected] >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>> >>> <IMG-20190505-WA0001.jpg>
_______________________________________________ USRP-users mailing list [email protected] http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
