Neptune R450 MC, Installation And Maintenance Manual

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Troubleshooting
R450 Mini Collector Installation and Maintenance Guide 47
The Radio Module Never Transmits
The simplest test is to cycle power on the R450 MC and see if the radio
module starts transmitting.
• If radio module starts transmitting, this indicates that there was a
soft failure in one of the serial ports possibly related to the side
effects of a storm.
• If this does not fix the problem, then the R450 MC has an internal
problem, either with the computer or the radio module. It is
recommended that the R450 MC be returned for repair.
R450 MC Not Collecting as Much Data as Before but Still Collecting Some MIU Data
This usually indicates that there is a problem with the RF antenna and
feedline system or possibly an internal problem.
1 First, check all the system voltages as outlined above.
2 Check the VSWR of the system using the technique previously
described.
3 If VSWR is high, the feedline and antenna should be checked out
and certified by qualified radio personnel. Visually check for water
ingress inside the coax connector. If water is detected, then the
weatherproofing on the coax connections needs investigating and
possible redoing.
4 If power output is low, a second VSWR check can be made by
placing the wattmeter between the radio module and the surge
protector.
5 If the VSWR is much higher measuring before the surge
suppressor, the suppressor may be damaged.
6 If the above tests pass, most likely there is a problem with the radio
module, and it is recommended that the R450 MC be returned for
repair. See “Contacting Customer Support” on page 52.
Diagnostic Ports
You can obtain diagnostic information from the R450 MC using the
three available diagnostic ports:
• Cellular modem serial port
• Microsoft Diagnostic (MSD)
• Field Service Tool (FST)
It can take up to five minutes for the R450 MC to be fully functional.