Eric Hill Matlis wrote:
Thanks for the response. I guess my question is: where is that
information carried? Is it in the definition of the source? The two
definitions of the sinks look virtually identical to me:
am_rcv.py:
pre_demod = fftsink.fft_sink_c (self, panel,
title="Pre-Demodulation", fft_size=1024, sample_rate=if_rate)
self.connect (src, pre_demod)
vbox.Add (pre_demod.win, 1, wx.EXPAND)
usrp_wfm_rcv_pll.py:
self.src_fft = fftsink.fft_sink_c (self, self.panel,
title="Data from USRP",fft_size=512, sample_rate=usrp_rate)
self.connect (self.u, self.src_fft)
vbox.Add (self.src_fft.win, 4, wx.EXPAND)
eric
I haven't looked at the code carefully, but "if_rate" and "usrp_rate"
sure look suspicious given that IF usually stands for Intermediate
Frequency. Here is a relevant-looking part of fftsink.py
x = max(abs(*self.fftsink.sample_rate*),
abs(self.fftsink.baseband_freq))
if x >= 1e9:
sf = 1e-9
units = "GHz"
elif x >= 1e6:
sf = 1e-6
units = "MHz"
else:
sf = 1e-3
units = "kHz"
-Dan
_______________________________________________
Discuss-gnuradio mailing list
[email protected]
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
