On 2021-12-02 08:43, [email protected] wrote:
Hello,
Ignore my first message, I was trying to enroll to the list. My
questions are following:
1) When I try to do iq balance and dc offset calibrations of n320, I
got the error as seen in figure 1.
Looking quickly at the code for that utility, it seems to want to
operate at whatever the default sample-rate is for the device, which may
be too high to
stream reliably onto the N320 CPU itself. Re-try using a fast host
computer, using it in network mode rather than embedded mode.
2) When I try to calibrate the power of n320 by visa power meter, it
detects the power meter but it gives an error of /“no USRP calibrator
object found for device type: n320”. /As seen in Figure2/./ Is’nt
there any power calibration utility for n320?
Yes, that means that there's no support module for power calibration for
N320. The power-calibration interface is new, experimental, and only
available for certain types
of devices. I'm not sure when that will be extended to N320.
3) Can you show me the path to get a full calibrated (especially power
calibrated) n320?
I'll note that the mixer used in the N320 already has pretty-good
guarantees of I/Q phase and amplitude balance, but as I noted above, you
should be able to
do I/Q calibration if you move your I/Q calibration to the host.
For power calibration are you interested in RX power calibration or TX
power calibration or both? IF you're operating at only a few
frequencies and gain settings, you can
do the calibration yourself, in your own software, manually. This is
how it has been done for many many years prior to the partial
introduction of the power calibration
API.
If you have RF power calibration equipment in your laboratory already,
this shouldn't be too onerous.
Thanks
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