Note that on a lot of GPS devices that only one edge of the 1PPS pulse is 
stable and the other edge can jitter a bit.

Also, you might want to try programming the PPS to a 50% duty cycle (but having 
an asymmetrical PPS pulse might have some advantages for post processing).

The receiver with the best 1PPS stability  that I have tested is the Furuno 
GT-8736.  Its typical span is under +/- 4ns from nominal. 
time-nuts mailing list --
To unsubscribe, go to
and follow the instructions there.

Reply via email to