Eric, I am just wondering whether this piece of code exists somewhere or not to enable
> > 100MS/s I & Q is decimated to 25MS/s complex. We use 16-bit I & Q. > That works out to ~800Mbit/s on the gigabit ethernet, which the USRP2 > can sustain, no problem. If so, would you please kindly point out? Thanks, Andrew On Fri, 2008-09-12 at 16:37 -0400, [EMAIL PROTECTED] wrote: > On Fri, Sep 12, 2008 at 01:54:08PM -0500, Douglas Geiger wrote: > > Very exciting! > > > > One technical question: > > By 25 MHz of instantaneous RF bandwidth - do you mean the > 100Msamples/s > > from the ADC gets decimated down to 50Msamples/s? In which case, is > the > > Gig-E able to handle that much sustained throughput (I'm guessing > that's > > with 8-bit samples?). > > 100MS/s I & Q is decimated to 25MS/s complex. We use 16-bit I & Q. > That works out to ~800Mbit/s on the gigabit ethernet, which the USRP2 > can sustain, no problem. > > > Also, does the locking of the clocks of multiple USRP2's work like > the > > USRP, e.g. where I can set one as the master and the other as slave > - i.e. > > is the MIMO cable you refer to a coax SMA-SMA cable to connect the > clock > > in/out connect (which have to be soldered in place) and the 2-wire > cable to > > the daughterboard (like described on > > http://gnuradio.org/trac/wiki/MultiUsrp)? > > No soldering required. The mimo cable is a serial attached scsi cable > repurposed for our needs. The host configures the clocking on the > USRP2s over the ethernet. > > Here are the clocking options: > > USRP uses it's own free running xtal oscillator > USRP uses the external reference input (SMA connector) > USRP uses the clock provided over the MIMO cable. > > In addition, the master is programmed to drive clock onto the > MIMO cable. > > Eric > -- _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
