Re: [gpsd-users] NTP1 keeps going away.

[David J Taylor]

From: stinga
[]
address@hidden:~# ppstest /dev/pps0
trying PPS source "/dev/pps0"
found PPS source "/dev/pps0"
ok, found 1 source(s), now start fetching data...
source 0 - assert 1510148557.996485612, sequence: 438970 - clear 
0.000000000, sequence: 0
source 0 - assert 1510148558.001389037, sequence: 438974 - clear 
0.000000000, sequence: 0
source 0 - assert 1510148558.001719066, sequence: 438985 - clear 
0.000000000, sequence: 0
source 0 - assert 1510148558.015093227, sequence: 438986 - clear 
0.000000000, sequence: 0
source 0 - assert 1510148558.020151666, sequence: 438998 - clear 
0.000000000, sequence: 0
source 0 - assert 1510148558.996611407, sequence: 439003 - clear 
0.000000000, sequence: 0
source 0 - assert 1510148559.001163803, sequence: 439006 - clear 
0.000000000, sequence: 0

It is strange , as it just sits there quite happily and then eventually 
barfs and looses NTP1.
===============================

I would check the PPS signal with an oscilloscope - it seems to have some 
"bounce" so may not be very "clean".  The GPS isn't set to 5 iterations per 
second, I suppose?

Cheers,
David
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: address@hidden
Twitter: @gm8arv