I'm using a FLex900 daughterboard with the usrp. I used the usrp_siggen.sh
script from the /gr-usrp/apps folder.
I wanted a sinusoidal carrier(no modulation) at 915Mhz. However after running
the code I observe max. power at 920Mhz in the spectrum analyzer and a small
peak at 915Mhz.
I am not clear how the wfreq(waveform freq) parameter in the foll. line of code:
/* Set up the signal source */
siggen = gr_make_sig_source_c(input_rate, GR_SIN_WAVE, wfreq, amp);
affects the output.
The output that was displayed was:
--------------------------
which: 0
interp: 128
rf_freq: 9.15e+08
amp: 5.000000
nsamples: 0
Subdevice name is Flex 900 Tx MIMO B
Subdevice freq range: (8e+08, 1e+09)
mux: 0x000098
usrp->dac_freq(): 128000000
usrp->interp_rate(): 128
baseband rate: 1e+06
target_freq: 915000000.000000
ok: true
r.baseband_freq: 920000000.000000
r.dxc_freq: -5000000.000000
r.residual_freq: 0.000000
r.inverted: 0
--------------------------
I dont know if I'm setting incorrect values or using a wrong approach. Please
help me out.
Thanks
-Rush
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