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Pluto SDR Clock Source Switching

Posted: Mon Feb 26, 2024 7:56 am
by cuthbertdavies
Hello,
I have new Pluto with Rev D PCB, and I connect an external 40Mhz from GPS.
From putty I have set fw_setenv refclk_source external , and verify with. fw_printenv refclk_source, it's OK, no problems.
But It seems that if I unplug GPS, pluto automatically switches to its internal tcxo, can anyone confirm?
Thank you, all the best 73 Franck F1SSF.

Re: Pluto SDR Clock Source Switching

Posted: Mon Feb 26, 2024 11:10 am
by Basil
That is what I see here on my Rev D Pluto. Another facet of this is if people incorrectly set up a Rev D for an external source it's not immediately obvious it isn't locked to the EXTERNAL source, because it still works...

Best regards, Chris, 2E0ILY