Hi Manuel, your signal is sampled with a sample rate. You can now estimate the time shift in (fractional) samples, and calculate the "wall clock" time difference by dividing by the sampling rate. You, as a user, set the sampling rate that your device uses. The B210 is very flexible in respect to that.
Best regards, Marcus On 03/02/2015 09:02 PM, Manuel David Lozano Amezquita wrote: > > Hi Marcus > > Thank you for your time, > > I need to transmit a signal and then receive it, so I need the time > difference between the two signals. I thought that I need a clock in > both so I could compare in the same time scale the two signals. Thats > why I need the clock. > > Or how can I take the time between the 2 signals? > > Thank you! > > El mar 2, 2015 2:53 PM, =?ISO-8859-1?Q?Marcus_M=FCller?= > <[email protected]> escribió: > Hi Manuel, > On 03/02/2015 08:38 PM, Manuel David Lozano Amezquita wrote: >> >> Hi Marcus, I know that the clock of the USRP b210 is 62MHz, but I >> need to show it on the flowgraph to compare the phase of two signals. >> > I'm really confused. You *can* configure the master clock rate, which > is the rate at which the signal is sampled, to be up to 61.44MHz, but > that's neither the default nor 62MHz. There are several clocks in the > B210, so maybe I'm missing something. > > Where does that freuquency come from? What does it signify? > Why do you need it to compare phases? Of what? > > Best regards, > Marcus Müller > >> Thanks >> >> Manuel >> >> El mar 2, 2015 2:26 PM, =?ISO-8859-1?Q?Marcus_M=FCller?= >> <[email protected]> <mailto:[email protected]> escribió: >> Hi Manuel, >> >> could you explain what you mean with "internal clock of the board"? >> >> Best regards, >> Marcus Müller >> >> On 03/02/2015 08:04 PM, Manuel David Lozano Amezquita wrote: >>> Hi everyone, >>> >>> I'm using a USRP B210 board, and I don't know how to watch on the >>> flowgraph the internal clock of the board, I need it to compare the >>> time difference of two signals. >>> >>> Please Help Meeeee. >>> >>> Thanks >>> >>> Manuel >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> [email protected] <mailto:[email protected]> >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >
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