[ntp:questions] FreeBSD with Garmin GPS 18 LVC

Keith E. Brandt, M.D. wd9get at amsat.org
Sat Mar 3 22:10:35 UTC 2007

I'm trying to set up a server on a FreeBSD 6.2 system with the Garmin 
GPS 18 LVC as the PPS source.

The system works fine using pool servers (PPS not enabled), but as 
soon as I try to use the PPS signal, it acts as if ntpd is not 
running (I get a "localhost: timed out, nothing received" error on 
ntpq queries).

I'm seeing good data from the GPS using minicom to look at the data 
stream and I have 4 - 6 satellites locked.

My ntp.conf file contains:

driftfile /etc/ntp.drift
server 0.us.pool.ntp.org   iburst
server 1.us.pool.ntp.org   iburst
server 2.us.pool.ntp.org   iburst
server  mode 1   prefer
fudge time1 0.000   flag3 1 refid PPS

(when I comment out the last two lines, it works - obviously without 
the PPS ref)



LtCol Keith E. Brandt, MD, MPH
USAF-NASA Aerospace Medicine Liaison Officer
Johnson Space Center, Houston, Texas
wd9get at amsat.org

Goodbye cruel world that was my home-
   there's cleaner space out here to roam
Put my feet up on the moons of Mars-
   sit back, relax, and count the stars

*This message transmitted with 100% recycled electrons  

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