It’s likely better to use continuous steaming, and use the tags inserted in the steam to determine applicable frequency.
Tune time on the UBX is probably a few milliseconds. But I must emphasize that none of this hardware was optimized for fast frequency hopping. Sent from my iPhone > On Feb 23, 2021, at 11:19 AM, Cox, Jonathan Albert via USRP-users > <[email protected]> wrote: > > > Hello USRP Users, > > I’d like to understand the practicality of using a USRP with UBX board as a > swept spectrum analyzer to sweep a broad bandwidth, like sampling 10 MHz to 6 > GHz fairly quickly. I don’t require extremely precise amplitude calibration > across that bandwidth, but the sweep speed (LO tuning and data acquisition > initialization) should be relatively quick. > > How long does it take to command the USRP to tune to a particular LO center > frequency, initiate a data acquisition, and then return the result (excluding > the time required to perform the actual sampling)? For example, the Tektronix > RSA306B claims a sweep speed of 500 ms for 9 kHz to 6 GHz. > > Roughly speaking, to cover 6 GHz with ~160 MHz bandwidth, you would need to > tune the LO probably 45 to 100 times (depending on overlap, filtering, etc.) > . Therefore, if you want to keep the overhead under 200 ms, each > tune/initiate acquisition/download step should take no more than 2 or 4 ms. > > Is it reasonable to tune and acquire with the UBX board in an X300 in 2 to 4 > ms? > > Regards, > Jonathan > _______________________________________________ > USRP-users mailing list > [email protected] > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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