Neptune Technology R450, Руководство по установке и обслуживанию

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13. When finished, power off the unit.
The Radio Never Transmits
The simplest test is to cycle power on the R450 DC to see if the radio
starts transmitting.
It can take up to 10 minutes for the R450 DC to be fully functional.
l
If radio 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.
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If this does not fix the problem, then the R450 DC has an internal
problem, either with the computer or the Neptune modem. It is
recommended that you return the R450 DC for repair.
Reduction in Amount of Data Collected
If the R450 DC is not collecting as much data as before, but it is still
collecting some MIU data, this usually indicates that there is a
problem with the antenna and feedline system or possibly an internal
problem. To determine the cause of the problem, complete the
following steps.
1. Check all the system voltages as outlined above.
2. Check the VSWR of the system using the technique previously
described.
If the VSWR is high, the feedline and antenna should be checked
out and certified by qualified radio personnel.
3. Check the VSWR again, if the power output is low, by placing the
wattmeter between the duplexer and the surge protector.
If the VSWR measures much higher before the surge suppressor,
the suppressor may be damaged.
If the above tests pass, most likely there is s problem with the
duplexer or radio, and it is recommended that you contact Customer
Support.
R450 Data Collector Installation and Maintenance Guide 83
Chapter 6: Troubleshooting