CMM rebooting!!!

Products PMP
#1

All of a sudden today our CMM started rebooting by itself apparently. Almost every minute. Looking at the Event Log I see this:

08:41:55pm : Wed Apr 04 2007 : File gps.c : Line 437 GPS Date/Time Set
08:42:14pm : Wed Apr 04 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
08:42:48pm : Wed Apr 04 2007 : File syslog.c : Line 789 System Reset Exception – External Hard Reset
08:42:48pm : Wed Apr 04 2007 : File …/cmm/root.c : Line 69 CANOPY CMM 2.2 Build 2 Feb 23 2006 16:45:22
08:43:00pm : Wed Apr 04 2007 : File gps.c : Line 437 GPS Date/Time Set
08:43:18pm : Wed Apr 04 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
08:44:05pm : Wed Apr 04 2007 : File syslog.c : Line 789 System Reset Exception – External Hard Reset
08:44:05pm : Wed Apr 04 2007 : File …/cmm/root.c : Line 69 CANOPY CMM 2.2 Build 2 Feb 23 2006 16:45:22
08:44:18pm : Wed Apr 04 2007 : File gps.c : Line 437 GPS Date/Time Set
08:44:36pm : Wed Apr 04 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
08:45:56pm : Wed Apr 04 2007 : File syslog.c : Line 789 System Reset Exception – External Hard Reset
08:45:56pm : Wed Apr 04 2007 : File …/cmm/root.c : Line 69 CANOPY CMM 2.2 Build 2 Feb 23 2006 16:45:22
08:46:08pm : Wed Apr 04 2007 : File gps.c : Line 437 GPS Date/Time Set
08:46:26pm : Wed Apr 04 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected
08:49:02pm : Wed Apr 04 2007 : File syslog.c : Line 789 System Reset Exception – External Hard Reset
08:49:02pm : Wed Apr 04 2007 : File …/cmm/root.c : Line 69 CANOPY CMM 2.2 Build 2 Feb 23 2006 16:45:22
08:49:16pm : Wed Apr 04 2007 : File gps.c : Line 437 GPS Date/Time Set
08:49:34pm : Wed Apr 04 2007 : File gps.c : Line 678 GPS SYNC Pulse Detected

Can anyone think of why this might be happening?

#2

check you power supply…

external hard reset… looks like it is loosing power…

#3

yeah i know it’s losing power, I don’t know why though. I was at the tower today while it was happening. It was plugged into a power strip which is plugged into a ups, everything else off the same strip/ups worked fine.
I’ve found that if I turn off the power on the CMM for one of the APs, it seems to work. Any idea why this would be happening? As of right now we’re planning a tower climb to replace equipment.

#4

Measure the power coming to the CMM, i guess it will be lower than 24 V. Take spare cabele with you, with more coper then the old one.