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| author | Nick Foster <nick@nerdnetworks.org> | 2010-12-28 18:32:17 -0800 |
|---|---|---|
| committer | Nick Foster <nick@nerdnetworks.org> | 2010-12-28 18:32:17 -0800 |
| commit | 253ac61ad1a0742395e43031a861cc7c13ffe2e5 (patch) | |
| tree | b237bd883d950c68034a0a33dc56fcaf1ff958cd /host/lib/usrp | |
| parent | d0244e8390985911a1ba4f95ed64f40e56a40e7f (diff) | |
| download | uhd-253ac61ad1a0742395e43031a861cc7c13ffe2e5.tar.gz uhd-253ac61ad1a0742395e43031a861cc7c13ffe2e5.tar.bz2 uhd-253ac61ad1a0742395e43031a861cc7c13ffe2e5.zip | |
TVRX: fix bug in rf_gain_to_voltage -- we're hi-side mixing, not lo-side
Diffstat (limited to 'host/lib/usrp')
| -rw-r--r-- | host/lib/usrp/dboard/db_tvrx.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/host/lib/usrp/dboard/db_tvrx.cpp b/host/lib/usrp/dboard/db_tvrx.cpp index 17fdad74a..2508555d0 100644 --- a/host/lib/usrp/dboard/db_tvrx.cpp +++ b/host/lib/usrp/dboard/db_tvrx.cpp @@ -280,7 +280,7 @@ static float rf_gain_to_voltage(float gain, double lo_freq){ gain = get_tvrx_gain_ranges()["RF"].clip(gain); //first we need to find out what band we're in, because gains are different across different bands - std::string band = get_band(lo_freq + tvrx_if_freq); + std::string band = get_band(lo_freq - tvrx_if_freq); //this is the voltage at the TVRX gain input double gain_volts = gain_interp(gain, tvrx_rf_gains_db[band], tvrx_gains_volts); |