If the Event Log tabs in all connected modules contain Loss of GPS Sync Pulse messages, perform the following steps.
Troubleshooting CMM4 not passing sync
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1 |
Verify that the GPS antenna has an unobstructed view of the entire horizon. |
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Verify that the GPS coaxial cable meets specifications. |
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Verify that the GPS sync cable meets specifications for wiring and length. |
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4 |
If the web pages of connected modules indicate any of the following, then find and eliminate the source of noise that is being coupled into the GPS sync cable: · In the GPS Status page: o anomalous number of Satellites Tracked (greater than 12, for example) o incorrect reported Latitude and/or Longitude of the antenna · In the Event Log page: o garbled GPS messages o large number of Acquired GPS Sync Pulse messages GPS signal acquisition must not take longer than 5 minutes from unit startup. |
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If these efforts fail to resolve the problem, then request an RMA for the CMM4. |