On Tue, Jul 8, 2008 at 3:03 AM, Martin Braun <[EMAIL PROTECTED]> wrote: > On Mon, Jul 07, 2008 at 04:32:47PM -0500, Jason Uher wrote: >> #Connect the sink to a SIN source >> src0 = gr.sig_source_c (48000, gr.GR_SIN_WAVE, 350, 0.5) >> fg.connect (src0, ut) > > This doesn't seem right. You're creating a sine wave w/ amplitude 0.5. > In order to fully use the dynamic range of your USRP D/A converters, the > signal needs to be somewhere in +-2^15. All you're transmitting is very > quiet noise.
Thanks, that was definitely the problem. I added a multiplier in there and I can now hear the sine wave (faintly) behind all the static. Also, last night while trying to figure out how to test code with only one usrp I came up with what now seems like an obvious solution. I transplanted the sine wave transmission code and plopped it into the usrp_oscope script, forcing the oscope and transmitter to use the correct devices, and now the signal shows up nice and clean on the oscope display. Jason _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
