Armand,
take a look at
void ad9361_device_t::_calibrate_baseband_dc_offset()
in ad9361_device.cpp.
You could play around with the parameters in there and see if that helps.
However, if I remember correctly, it is the bb tracking that can be
disabled via UHD and the rf tracking will always be active
(see void ad9361_device_t::set_dc_offset_auto(direction_t direction,
const bool on)).
Anyhow, you should be able to replicate the register settings used by
the ADI tool in ad9361_device.cpp to get to the desired behavior.
Cheers,
Julian
On 3/17/22 09:49, [email protected] wrote:
Hello,
I'm using usrp e312 for acquisitions on modulated signals and i have
undesired power variations in time domain (2 to 10%). Thanks to analog
devices tools, i discovered that disabling bb_dc_offset tracking on
AD9361 settled the problem. As far as I know, uhd only provides
"rf_dc_offset" and "iq_imbalance" control and this doesn't settle the
problem. My question is how, on an uspr e312, can I disable bb_dc_offset
tracking ? (Or at least modify bb_dc_offset loop parameters).
Thanks for any help,
Armand
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