[USRP-users] Still problems with USRP time from GPSDO

Marcus D. Leech mleech at ripnet.com
Mon Apr 29 16:51:02 EDT 2013

On 04/29/2013 04:08 PM, Josh Blum wrote:
> On 04/29/2013 01:56 PM, Sean Nowlan wrote:
>> On 04/29/2013 02:37 PM, Josh Blum wrote:
>>> Can I ask what version of UHD you are running? A few weeks ago I fixed a
>>> bug on the master branch related to GPSDO time,
>> Hi Josh, can you point me to that commit? was it just a fix to
>> query_gpsdo_sensors or something in the driver/gpsdo control code?
> It was a fix to the gpsdo control code:
> https://github.com/EttusResearch/uhd/commit/31f0e964aa54a2c8e4d299432513623d2c49bbf0
> -josh
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Is it not the case that GPS time is strictly-linear, whereas UTC (which 
is what is carried by NTPD) has leap-second compensation.   Or do the GPSDO
   units produce a leapsecond-corrected timestamp?

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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