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Chapter 5 AN100U/UX Troubleshooting
Redline Communications Inc. Confidential and Proprietary
Check the event log to determine which of the power supplies is causing the fault. See
“Monitoring System Event Logs” on page 2-6
Follow the steps listed above, in “AC Powered Devices” on page 5-4 to ensure that the
power cables are connected properly and that the power bar or power outlet is not
defective.
Note
The AN100U/UX power supplies are not user-serviceable. If the power supply is the
cause of the fault, you must return the AN100U/UX to Redline for
repair/replacement.
Inrush Current at Startup
You may see a the message ”Invalid Radio Type” in the event log, even though both the
radio and the IDU are correct and have been installed correctly. If you are unsure whether
your radio is compatible with your AN100U/UX, please contact
[email protected] for a list of ODU devices supported by your IDU.
Also verify that connections between the IDU and the ODU are correct and that all
connectors and cables are in good repair. See “Replacing a Radio” on page 4-1.
When the DC source is powered up with the IDU connected, the radio’s power up
sequence results in an input surge current. If the power supply is not able to accommodate
this initial surge, it will interrupt the power supply to the IDU until this overload condition
stabilizes. The IDU, is then unable to accurately detect the radio.
Cold Restart of the AN100U/UX
If you encounter this message and are certain that the correct radio is installed, then you
need to perform a cold restart of the IDU as follows:
Step 1
Power down the IDU and disconnect it from the power supply.
Step 2
Ensure the DC power supply is connected and is powered up.
Step 3
Wait for 30 seconds and then reconnect the IDU.
Step 4
The radio should be detected. If you still see the message then your power supply may not
be able to meet the power requirements at system startup. You will need to replace the
power supply.
AN100U/UX Power Requirements
To avoid this situation, you need to verify that your power supply is able to accommodate
the estimated inrush current values. This may require investigation as the inrush current
is dependent on many external factors, such as the number and type of devices connected
to the circuit.