[USRP-users] GPSDO Support
simon at hb9drv.ch
Sun Jun 3 17:39:19 EDT 2012
Thanks - it's the internal GPSDO I'll be using. The oscillator phase noise
is very good.
Simon Brown, HB9DRV
You are standing at the end of a road before a small brick building. Around
you is a forest.
A small stream flows out of the building and down a gully. The sunspot count
From: Marcus D. Leech [mailto:mleech at ripnet.com]
Sent: 03 June 2012 18:37
To: Simon HB9DRV
Cc: usrp-users at lists.ettus.com
Subject: Re: [USRP-users] GPSDO Support
Via UHD.dll or flipping switches? It looks like I'll be buying one anyway,
the phase noise spec is very good.
Searching the UHD.dl source code I see this which indicates that it's used
"By default, if a GPSDO is detected at startup, the USRP will be configured
to use it as a frequency and time reference. The internal VITA timestamp
will be initialized to the GPS time, and the internal oscillator will be
phase-locked to the 10MHz GPSDO reference. If the GPSDO is not locked to
satellites, the VITA time will not be initialized."
That is only, as far as I know, for the "in skin" internal GPSDO.
Shirleys Bay Radio Astronomy Consortium
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the USRP-users