[ntp:questions] windows device manager and serialpps.sys

Mark C. Stephens marks at non-stop.com.au
Tue Nov 29 14:54:14 UTC 2011

I am running 4.2.7p98-o and I am uncertain whether or not PPS is working.

Under windows device manager I can see drivers for the port:

Serenum.sys & Serial.sys have a green tick next to them.

In event viewer, when starting ntpd I can't see any reference to PPS.

My relevant ntp.conf:

server minpoll 4 maxpoll 4 mode 24 prefer # NMEA serial port, 16 = 9600 baud, 8 = $GPZDA
fudge flag1 1 time2 -0.4781

the time2 fudge is the only way I can get the HP 58534 GPS timing antenna not to be marked a false ticker.

The loopstats all look good, but I am curious to know whether PPS is active or not.

Many thanks,

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