[ntp:questions] Geographical diversity of Stratum 1 servers

Greg Dowd gdowd at symmetricom.com
Thu Feb 14 13:38:12 UTC 2008


Jason Rabel wrote:
>> The GPS computation of location, elevation, and time involves a system 
>> of four simultaneous equations which can be solved for time, lattitude, 
>> longitude, and elevation.  Doing an extended "site survey" can refine 
>> your location and elevation.  The better location data, the better the 
>> solution for time.
> 
> The Tymserve (assuming model 2100 since that was the last and most popular)
> does a site-survey on power-up. Unfortunately you can't manually input your
> location (if you know it is more accurate) but the TS2100 does a pretty good
> job. It also disciplines an oscillator from the 1PPS so that it can flywheel
> in holdover mode.
> 
> Jason
You can enter the position manually.  And program the receiver mode.  I 
added a lot of access to the embedded trimble receiver.  It's been a 
while so I don't remember the details but look in the command shell 
/timing/gps/util.




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