On 26/04/2024 10:34, zhou via USRP-users wrote:
Hello all,
When calibrating X410
uhd_cal_tx_dc_offset --verbose
--args='192.168.20.2,mgmt_addr=192.168.6.99' --freq_start 2e9
--freq_stop 7.2e9 --precision 0.00001 --freq_step 5e6 --subdev="A:0"
Error happened:
Error: This board does not have the CAL antenna option, cannot
self-calibrate.
Looking at the page
https://files.ettus.com/manual/page_calibration.html
X410 uses ZBX daughterboard. It seems that X410 can't use the self-cal
commands.
Then how to calibrate it?
Thanks,
H.
The cal_xx_dc_offset and cal_cc_iq_balance utilities are designed for
USRPs with discrete daughtercards based on direct-conversion
RF chains. The X410 absolutely isn't that. The ZBX board does
downconversion, but using a "low" IF that can be directly
sampled by the RFSoC. There's no utility in calibrating DC offset
and IQ balance on this radio.
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