gnu.org]
> On Behalf Of MarcW
> Sent: Tuesday, February 23, 2010 11:37 AM
> To: Discuss-gnuradio@gnu.org
> Subject: RE: [Discuss-gnuradio] Syncronous data aquisition
> using multiple USRP2 boards
>
>
> Hi Ulrika,
> In my example the top sine wave in the 10MHz clock re
I am still at a complete unknown as to the source of the phase shifts of the
USRP2 clocks I obtain in my initial post. Looking at the input clock
reference signals to each board there is no phase offset and Matt said in
his post on USRP2 syncronisation that clocks on multiple boards must have no
p
Hi Ulrika,
In my example the top sine wave in the 10MHz clock reference and the lower 3
plots are from the debug clock pins on different USRP2 boards all using this
clock reference. All boards are started at approximately the same time and
all 4 signals undergo no drift with respect to each other
Hi,
What do we see in your example? Have you divided the clock by 10?
Is the output stable or are the edges jittering anything?
When I look at our clock outputs (in a very quick measurement) they are all
approximately in phase but the edges are jittering quite a bit, and I would
assume that to d
MarcW wrote:
I am trying to syncronise data acquisition for 3 USRP2 boxes at 2.4GHz to
aquire say 1M samples from each board and write to a text file. So far I
have managed to modify the firmware to output the USRP2 clock to the debug
pins and to call config_mimo(WE_LOCK_TO_SMA) and sync_to_pps()
