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| author | Tom Tsou <tom.tsou@ettus.com> | 2015-06-17 18:05:50 -0700 |
|---|---|---|
| committer | Martin Braun <martin.braun@ettus.com> | 2015-07-13 14:59:16 -0700 |
| commit | e71edf79628531eecb61234c285218a7b59a7233 (patch) | |
| tree | 975669d7575875470377661ba071a66042e0f729 | |
| parent | 3c5b4b5f9f3db6a3c1327d1d583a28f55fa09a1d (diff) | |
| download | uhd-e71edf79628531eecb61234c285218a7b59a7233.tar.gz uhd-e71edf79628531eecb61234c285218a7b59a7233.tar.bz2 uhd-e71edf79628531eecb61234c285218a7b59a7233.zip | |
ad9361: Update Tx Quad Cal to match current gain tables
Fixes issue #828 "B200: Tx quadrature calibration regression in master"
Following commit added new gain table settings to reflect updated values
from ADI. Gain indices used by Tx Quad Cal were not matched to
accommodate the new tables.
2b06c38 "b2xx: dc offset and iq imbalance correction control"
Requirement for Tx Quad Cal is for TIA gain and analog LPF gain to be
set at 0 dB, or 0x20 in the gain table. Final effect is a dramatic
decrease in Tx DC offset and quadrature image.
Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
| -rw-r--r-- | host/lib/usrp/common/ad9361_driver/ad9361_device.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp b/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp index 19b6242ff..00534c305 100644 --- a/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp +++ b/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp @@ -833,7 +833,7 @@ void ad9361_device_t::_tx_quadrature_cal_routine() { /* The gain table index used for calibration must be adjusted for the * mid-table to get a TIA index = 1 and LPF index = 0. */ - if ((_rx_freq >= 1300e6) && (_rx_freq < 4000e6)) { + if (_rx_freq < 1300e6) { _io_iface->poke8(0x0aa, 0x22); // Cal gain table index } else { _io_iface->poke8(0x0aa, 0x25); // Cal gain table index |