User Manual Chapter 5

Chapter 5 - 2
RX (green)
LINK (green)
Indicates input activity from LAN when blinking.
Indicates good link to LAN when lit.
RADIO
TX (green)
RX (green)
LINK (green)
If any of these is not active, run the Loop Back Test. If the unit fails the Loop Back
Test, replace the IDU.
Indicates radio transmission activity when blinking.
Indicates radio receive activity when blinking.
Indicates good radio link to ISP when lit.
FAULT
IDU (red)
ODU (red)
Indicates IDU fault detected by self test when lit. Replace the IDU.
Indicates ODU fault (or faulty connection to ODU) detected by IDU self test. Check the
RF connection between the IDU and ODU. Check out the ODU by connecting it to a
test IDU. If the same fault appears, replace the antenna assembly. If the ODU is ok,
replace the IDU and/or RF cable.
LOOP BACK TEST:
The Loop Back Test checks IDU radio operation by transmitting TCP/IP packets to itself and verifying reception of the
packets.
NOTE: Other tests available in the Maintenance Mode are for Network Manager or factory use only.
If you suspect a radio problem, run the Loop Back Test as follows:
1. Power down the IDU. Connect the IDU rear panel CONSOLE port to the serial port of the computer. Disconnect
the RF cable from the RF port.
2. Power up the IDU. Wait for the system to boot.
3. At the Press any key to change device parameters prompt, press any key to advance to the Device
Parameters Menu. Select 1 Maintenance Mode, and set Maintenance Mode to Enabled.
4. Press 4 to quit the Device Parameters Menu and enter the Maintenance Menu Screen.
5. Press 7 to Initiate Loop Back Test.
6. Press 3 to run the Default RF Loop Back test.
7. While the test is running, the following message screen will appear. This message will be repeated for each
successive test.
Number of Blocks Per Cycle
ByteErrsPerCycle=0 BlkErrsPerCycle=0
ByteErrRate=0.000000e+00 BlkErrRate=0.000000e+00
TxNumBlks=100 RxNumBlks=100 Blocks Missed=0
ByteErrsPerCycle and BlkErrsPerCycle indicate errors in transmitting/receiving packets. Both values should equal
zero. ByteErrRate and BlkErrRate should also equal zero. The number of packets transmitted (TxNumBlks)
should equal the number of packets received (RxNumBlks), and the number of Blocks Missed should equal zero.
Any other indication reveals a problem in the IDU radio section. Replace the IDU and return the faulty IDU for
service.
8. Press 1 and ENTER to end the test.