Hi Pedro, Cédric,
I did some experiments with X310. I tried calibration with and without 30dB
loopback connection. I found that performance was very similar in both
approaches, so the conclusion is that loopback connection is unnecessary.
Maybe, the circuit in USRP had been changed since we first got it from Ettus
about 6 years ago. BTW, I am using UHD 4.4.
Another important thing I found is that USRP must be power cycled after
calibration, otherwise, its performance would be poor. In my case, the SNR was
about 14dB worse if not power cycling the device.
Kind regards,Hongwei
On Thursday, 7 March 2024 at 08:52:58 GMT, Cédric Hannotier via USRP-users
<usrp-users@lists.ettus.com> wrote:
Hello Pedro,
On 2024-03-06 22:02 +0000, pav.vie...@gmail.com wrote:
> I'd like to know if you managed to obtain information about the calibration
> process?
I did not.
However, Rob also mentioned that the ports should be left unconnected.
I would recommend to stick with what is written
in the official documentation.
Kind regards
--
Cédric Hannotier
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