Hi, WE have a strange issue with a CMM. It will see 7 sats but track 5 at best, sometimes even tracking down to 1 and eventually lose GPS.
This is what we see:
Device type CMM 0a-00-3e-e0-1e-e2
PLD Version 5
Software Version CANOPY CMM 2.2 Build 2 Feb 23 2006 16:45:22
System Time 09:30:41am Sun Dec 23 2007
Up Time 1d, 20:58:34
Satellites Visible 8 Satellites Tracked 3
Latitude N35 54.5810 Longitude E14 30.4520
Height 104 meters Tracking Mode 2D Fix
SYNC Pulse Status SYNC OK
I have tried re-flashing the firware, but same issues.
GPS Status shows:
SYNC Pulse Status SYNC OK Tracking Mode 2D Fix
GPS Time 09:32:57 GPS Date 12/23/2007
Satellites Tracked 3 of Satellites Visible 9
Height 104 meters Antenna Connection OK
Latitude N35 54.5810
Longitude E14 30.4520 Invalid Msg 0
Restart Count 0
This is a sample of the Event Log:
07:48:34am : Sun Oct 14 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
02:45:21pm : Sun Oct 14 2007 : File gps.c : Line 687 GPS SYNC Pulse Lost
02:45:29pm : Sun Oct 14 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
05:58:44am : Mon Oct 15 2007 : File gps.c : Line 687 GPS SYNC Pulse Lost
05:59:16am : Mon Oct 15 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
10:42:42am : Mon Oct 15 2007 : File gps.c : Line 687 GPS SYNC Pulse Lost
10:43:22am : Mon Oct 15 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
07:55:27pm : Mon Oct 15 2007 : File gps.c : Line 687 GPS SYNC Pulse Lost
08:09:59pm : Mon Oct 15 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
10:46:42am : Tue Oct 16 2007 : File gps.c : Line 687 GPS SYNC Pulse Lost
10:46:58am : Tue Oct 16 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
07:44:15pm : Tue Oct 16 2007 : File gps.c : Line 687 GPS SYNC Pulse Lost
08:07:59pm : Tue Oct 16 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
05:29:47am : Wed Oct 17 2007 : File gps.c : Line 687 GPS SYNC Pulse Lost
05:31:39am : Wed Oct 17 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
05:56:05am : Wed Oct 17 2007 : File gps.c : Line 687 GPS SYNC Pulse Lost
It is driving me insane.
Any ideas?
I had that same issue. Turns out water got into the cable.
Jerry, thanks for your post.
If it were the cable, why would the GPS show that the Antenna is OK. Normally when you have issues with the cable, you get either over or under current.
I didn’t say that was your problem, that was just my problem.
this is an obvious question, have you relocated the antenna to make sure it has a good los to the southern skies?
Yeah we had an issue like that a few years ago. We mounted the GPS in one location and it worked for a couple years, then it stopped working…so we moved it a couple feet and it’s been working ever since. It was weird.
Just an update on this in case any one else ever sees this issue.
I resolved the problem by moving the GPS receiver about 2 meters horizontally. Tracks 8 Sats now.
Cable was fine.