[time-nuts] Some results of PRS10 and Trimble Resolution
n9rkm at wi-net.com
Tue Jun 27 18:29:39 EDT 2006
In the series of sawtooth displays are these all the same M12 and if
so how did it happen that you have this result in a short time?
On Tue Jun 27 15:45 , 'Tom Van Baak' <tvb at leapsecond.com> sent:
For example, a 25 MHz oscillator in a GPS engine allows
the processor to pick, each second, which one of 25 million
edges it wants to be the official 1 PPS edge for that second.
Now 25 MHz frequency is 40 ns period so that gives a 1 PPS
granularity of +/- 20 ns in this example. See:
If that makes sense, then what's sawtooth correction?
In short, the sawtooth correction describes, to the best
guess of the receiver, how early or late the hardware
1 PPS was.
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