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| author | Tom Tsou <tom.tsou@ettus.com> | 2015-06-23 11:10:28 -0700 |
|---|---|---|
| committer | Martin Braun <martin.braun@ettus.com> | 2015-08-13 14:37:42 -0700 |
| commit | b2eda1fb1a523b6dbc0c7c968af803551383f4ac (patch) | |
| tree | 0622a36b2bf38ff23e212beb0efa88ac5ff44c62 /host/lib/usrp/common/ad9361_driver/ad9361_device.h | |
| parent | 94c58baf4a2ba6c3a2c7899030f2de962212d937 (diff) | |
| download | uhd-b2eda1fb1a523b6dbc0c7c968af803551383f4ac.tar.gz uhd-b2eda1fb1a523b6dbc0c7c968af803551383f4ac.tar.bz2 uhd-b2eda1fb1a523b6dbc0c7c968af803551383f4ac.zip | |
ad9361: Reconfigure RF and baseband DC offset correction
Addressed and related issues:
#186 "B200: Catalina RX signal distortion"
#821 "Incorrect behavior with auto DC Offset correction turnned off"
#820 "Rx DC Offset Correction Convergence on B2xx Dependent on Master Clock Rate"
#755 "Demodulate IQ signal amplitude oscillation on B210 at 200 MHz carrier"
Due to recent change "ad9361: Invert phase on Rx LNA bypass path", we
now have uniform phase alignment across the entire gain range. This
drastically improves performance of RF DC tracking - not to be confused
with the - active and input dependent - baseband (BB) DC tracking loop.
RF DC tracking is not affected by input signals and updates during gain
changes. The updated configuration provides improved DC suppression for
operation whether BB tracking loop is enabled or disabled.
New behavior differs from the previous case where disabling BB tracking
would clear all - static and active - calibration tables. Now, static
correction tables are not wiped when BB tracking is turned off.
Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
Diffstat (limited to 'host/lib/usrp/common/ad9361_driver/ad9361_device.h')
| -rw-r--r-- | host/lib/usrp/common/ad9361_driver/ad9361_device.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/host/lib/usrp/common/ad9361_driver/ad9361_device.h b/host/lib/usrp/common/ad9361_driver/ad9361_device.h index 8281ec9e5..f9bcd3a5e 100644 --- a/host/lib/usrp/common/ad9361_driver/ad9361_device.h +++ b/host/lib/usrp/common/ad9361_driver/ad9361_device.h @@ -186,7 +186,7 @@ private: //Methods double _tune_helper(direction_t direction, const double value); double _setup_rates(const double rate); double _get_temperature(const double cal_offset, const double timeout = 0.1); - void _configure_bb_rf_dc_tracking(const bool on); + void _configure_bb_dc_tracking(); void _configure_rx_iq_tracking(); void _setup_agc(chain_t chain, gain_mode_t gain_mode); void _set_fir_taps(direction_t direction, chain_t chain, const std::vector<boost::int16_t>& taps); @@ -259,7 +259,7 @@ private: //Members chip_regs_t _regs; //Synchronization boost::recursive_mutex _mutex; - bool _use_dc_offset_correction; + bool _use_dc_offset_tracking; bool _use_iq_balance_tracking; }; |