Hello!
I have USRP B210 board and I bought some 10MHz OCXO that can be installed into GPSDO panel on the B210 pcba.
I briefly checked my OXCO it has some MCU (chinese STC), that just send:
$GPGGA,002811.058,0000.0000,N,00000.0000,E,0,00,,,M,,,,0000*09
each one second.
there is 10MHz output on pin 2 (according https://files.ettus.com/schematics/b200/b210.pdf schematic), but pin 3 (gps_lock)
is not connected anywhere on OCXO pcba, so it always 0. Also I didn't check anything about PPS.
As I can see the schematics, this signal not only fire corresponding LED, but also connected to some FPGA pin.
My question is: is it enough for described OCXO device that it gives 10MHz output (and I start uhd applications with arg clock_source=gpsdo)
and doesn't pullup gps_lock pin or gps_lock pin is somehow matters for software and I should patch software or pull up this pin?
--
Nikita Orlov
Skype: nik_stet
QQ: 2717846083
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