diff options
| author | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2008-02-28 19:03:55 +0000 |
|---|---|---|
| committer | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2008-02-28 19:03:55 +0000 |
| commit | 5ede0e2b1457d7c28ad29c5f2322305621a3b26a (patch) | |
| tree | 37301199a3a33780186b147ea304caa63eca6173 /gr-utils/src/python/usrp_fft.py | |
| parent | 2869e85809d37ab4a2c01a18c4b348f7f28ee9b0 (diff) | |
Added reference scaling to fftsink2. Default behavior is unchanged.
The new parameter 'ref_scale', defaulting to 1.0, represents a 0 dB
y-axis value.
Updated usrp_fft.py to display dBFS by setting ref_scale to 32768.0
and ref_level to 0. This results in the full 100 dB of dynamic range
being displayed.
Updated some gnuradio-examples to use the new parameter.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@7863 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'gr-utils/src/python/usrp_fft.py')
| -rwxr-xr-x | gr-utils/src/python/usrp_fft.py | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gr-utils/src/python/usrp_fft.py b/gr-utils/src/python/usrp_fft.py index d549dd4e39..30a06911ae 100755 --- a/gr-utils/src/python/usrp_fft.py +++ b/gr-utils/src/python/usrp_fft.py @@ -1,6 +1,6 @@ #!/usr/bin/env python # -# Copyright 2004,2005,2007 Free Software Foundation, Inc. +# Copyright 2004,2005,2007,2008 Free Software Foundation, Inc. # # This file is part of GNU Radio # @@ -115,7 +115,8 @@ class app_top_block(stdgui2.std_top_block): elif options.oscilloscope: self.scope = scopesink2.scope_sink_c(panel, sample_rate=input_rate) else: - self.scope = fftsink2.fft_sink_c (panel, fft_size=1024, sample_rate=input_rate, y_divs = 10) + self.scope = fftsink2.fft_sink_c (panel, fft_size=1024, sample_rate=input_rate, + ref_scale=32768.0, ref_level=0.0, y_divs = 10) self.connect(self.u, self.scope) |