I'm interested in whether it would be possible to use the ADALM-PLUTO time-of-arrival localization. This requires a very stable clock. I wonder whether it will be possible to feed in an external reference clock? In the revision-B schematics, it looks like there is no connector or jumper to switch from the built-in 40MHz oscillator to an external clock.
Also, if I do feed the clock from an external source (even if this involves removing the 40MHz oscillator), how difficult will it be to switch from 40MHz to 10Mhz? I see that the AD9363 does support 10MHz clocks, but will it is reasonably easy to configure the firmware for this clock frequency?
Thanks, Sivan Toledo, Tel-Aviv University
All you have to change is this line in the device tree:
linux/zynq-pluto-sdr.dtsi at master · analogdevicesinc/linux · GitHub
However you need to rebuild the plutosdr-fw image to apply the change.
Have a look also here -
Coherent Transceivers based on ADALM-PLUTO SDR | RTL-SDR Multi-Channel Coherent Receivers
I would be grateful if someone who have dev station for PLUTO, could compile firmware for 10MHz clock.