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Nuand's online calibration page
Posted: Sun Dec 11, 2016 1:57 pm
Has anyone managed to use Nuand's calibration page successfully? (https://nuand.com/calibration.php
It can't find my device's serial number !
Re: Nuand's online calibration page
Posted: Thu Feb 02, 2017 1:54 pm
Getting the calibration data from the manufacturer has been time-consuming, but I will request it again and see if we can get our local database updated.
That said, although the manufacturer calibrates the VCTCXO, that calibration value is only valid for the exact environmental condition at the time the calibration was performed. The VCTCXO is extremely sensitive to external stimuli (heat, airflow, pressure, etc.). Chances are, your ambient will not match the factory ambient. There is probably significantly more day-to-day (even hour-to-hour) variation as well. Of course this only matters if you have a timing-critical application.
Back in January, we added VCTCXO taming capabilities to the bladeRF (blog post
) using a Leo Bodnar GPS disciplined oscillator as a reference. For the most accurate VCTCXO, you'd have this running continuously for as long as you're operating the radio.