On Mon, Jun 14, 2010 at 11:03 AM, Jason Abele <ja...@ettus.com> wrote: >>>> Hi All, >>>> >>>> Has anyone measure the power level coming out of their WBX board? >>>> >>>> Measured on a Gigatronics 8541 microwave >>>> power meter connected directly at the back of the USRP2 I am getting >>>> (with a CW carrier) >>>> >>>> 100 MHz about 35 mW >>>> 1.3 GHz about 15 mW >>>> >>>> Ettus quote >>>> >>>> 50 - 100 mW< 1.2 GHz >>>> 30 - 70mW> 1.2 GHz >>>> >>>> I know measuring power is notoriously inaccurate but I was wondering >>>> what others have found. >>>> >>>> Setup USRP2 WBX UHD >>>> > > Please try the following command with non-UHD for comparison: > > usrp_siggen_gui.py -x 250k -i 64 --tx-gain=25 -A 1.0 -f 1.3G
My mistake here, please use -i 16 ... usrp_siggen_gui.py -x 250k -i 16 --tx-gain=25 -A 1.0 -f 1.3G > > You should see about 50mW (17dBm) at 1.30025GHz > > If you change the final argument to 100M you should see around > 80-100mW (19-20dBm) in the tone at 100.25MHz > > If you can confirm those numbers, perhaps we have a constant scalar > missing in either your flowgraph or the UHD code someplace. > > Thanks > Jason > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio