On Fri, Aug 28, 2009 at 09:00:07AM -0700, Josh Blum wrote: > The sample rate of the signal source is 1M. The sample rate of the usrp2 > is 100M/64. Your rates disagree. > > -Josh > > dennis wrote: >> Hi @ all >> >> Sorry, this stuff is new for me and therfore sorry for a possible >> stupid question ;-) . I play a little with GRC and want to transmit >> e.g. a cosine-wave at a specific frequency e.g. at 900MHz and width, >> say 2MHz. But my problem are as following: >> >> If i add only 2 blocks, i got nice constant transmission but the width >> are too large, say more than +- 30 Mhz >> __________ ______________ >> | signal | | | source: >> sample_rate: 1M, waveform:cosine, Frequency: 1k, Amplitude: 100 >> | source |--------->| usrp2 sink | usrp2 sink: >> interpolation: 64, Frequency: 900 MHz, Gain: 0 >> |__________| |______________|
The USRP2 expects its input to be be between 0 and 1.0. Try using Amplitude = 0.1 Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
