GPSDO detection in B200

Hi, How is the detection of GPSDO done in B200 ?
I see that UHD tries to detect GPSDO every time I use B200 but what is
it looking for?
How to force switching between internal, external and GPSDO clock ? I
have GPSDO installed but sometimes I want to force another clock source.
Also is there some more detailed description of what the LED’s
LED802/LED803 mean (especially LED802)?

On 06/06/2014 02:19 PM, Robert L. wrote:

Hi, How is the detection of GPSDO done in B200 ?
I see that UHD tries to detect GPSDO every time I use B200 but what is it
looking for?
How to force switching between internal, external and GPSDO clock ? I have GPSDO
installed but sometimes I want to force another clock source.
Also is there some more detailed description of what the LED’s LED802/LED803
mean (especially LED802)?


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I believe it just looks for messages from the NMEA serial port on the
GPSDO.

Also, you can select different clock sources when you instantiate a UHD
source/sink block in GRC. There’s a drop-down menu.

If you aren’t programming using GRC, you can use what it does generate
in the Python as a template for your own code.


Marcus L.
Principal Investigator
Shirleys Bay Radio Astronomy Consortium