[Discuss-gnuradio] Clock Sync Problems + Timestamp question

2009-10-20 Thread Tim Pearce
Hi, I've been trying to get two USRP2's with their clocks both synced to a 10MHz reference (for now the same reference from the back of some test equipment) - to do this I'm using the following code: in_pipe1=usrp2.source_32fc('eth0') in_pipe2=usrp2.source_32fc('eth2')

Re: [Discuss-gnuradio] Clock Sync Problems + Timestamp question

2009-10-20 Thread Matt Ettus
Tim Pearce wrote: Hi, I've been trying to get two USRP2's with their clocks both synced to a 10MHz reference (for now the same reference from the back of some test equipment) - to do this I'm using the following code: in_pipe1=usrp2.source_32fc('eth0')

Re: [Discuss-gnuradio] Clock Sync Problems + Timestamp question

2009-10-20 Thread Douglas Geiger
On Tue, Oct 20, 2009 at 12:20 PM, Tim Pearce timothy.pea...@gmail.com wrote: I'm also trying to attach the timestamp data do each sample -- as far as I can tell this is sent to give the sample timestamp for the first sample in each ethernet frame (then incremented by 1 for each subsequent

Re: [Discuss-gnuradio] Clock Sync Problems + Timestamp question

2009-10-20 Thread Tim Pearce
There is no frequency which can be received by both the BasicRX and the DBSRX. What frequency are you putting in? What frequency are you telling the USRP2s to tune to? Matt Hi, Sorry I probably confused things by mentioning the BasicRX DBSRX is the only receiver we have 2 of at the

Re: [Discuss-gnuradio] Clock Sync Problems + Timestamp question

2009-10-20 Thread Matt Ettus
Tim Pearce wrote: There is no frequency which can be received by both the BasicRX and the DBSRX. What frequency are you putting in? What frequency are you telling the USRP2s to tune to? Matt Hi, Sorry I probably confused things by mentioning the BasicRX DBSRX is the

Re: [Discuss-gnuradio] Clock Sync Problems + Timestamp question

2009-10-20 Thread Tim Pearce
Ah! The 10MHz was coming out the back of the siggen so would have been locked to the same reference. Thanks for your help Doug/Matt -- next time I'll stop and think through my test setup! Cheers, Tim On Tue, Oct 20, 2009 at 6:16 PM, Matt Ettus m...@ettus.com wrote: Tim Pearce wrote: