[ntp:questions] Fwd: Two PPS signals, one declared as falseticker
Nickolay Orekhov
nowhere at mail.ru
Mon Oct 17 12:35:55 UTC 2011
Hello!
I have the following configuration:
=================================================================
# drift frequency file
driftfile /fs/sd/etc/ntp.drift
# midist : increased minimal distance for PPS reference clocks ( default
0.001s )
tos mindist 0.032
# panic : zero to accept initial big shifts ( default 1000s )
# stepout : how many seconds wait before stepping to spike ( default 900s )
# step : step threshold in seconds ( default 0.128s )
tinker panic 0 stepout 60
# disable authentification for broadcast network
disable auth
# PPS reference clock
server 127.127.22.0 maxpoll 3
fudge 127.127.22.0 refid PPSI
# PPS reference clock
server 127.127.22.1 maxpoll 3
fudge 127.127.22.1 refid PPSE
# NMEA reference clock
server 127.127.20.0 mode 80 prefer maxpoll 3
fudge 127.127.20.0 refid NMEA stratum 8 time2 0.018
# External servers
server 10.1.1.252 prefer iburst maxpoll 3
broadcastclient
=================================================
Here's the output from ntpq:
remote refid st t when poll reach delay offset
jitter
==============================================================================
xPPS(0) .PPSI. 0 l 1 8 377 0.000 0.306
0.008
oPPS(1) .PPSE. 0 l 3 8 377 0.000 0.230
0.008
xGPS_NMEA(0) .NMEA. 8 l 1 8 377 0.000 -61.470
5.066
*10.1.1.252 172.100.100.2 3 u 1 8 377 0.854 -0.009
2.128
Please, could you advice me, why first PPS declared as falseticker ?
Thanks, Nick
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