ITC 220 Base Station Transceiver Installation Guide PN 133991 Rev. A
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2.
If the transceiver reboots every few minutes, replace the SD memory card with one that contains a valid CIM
script.
3.
If the previously-described procedures do not turn off the Fault LED, or if the POST results listing shows any other
kinds of problems, then replace the transceiver.
7.4
ANTENNA PROBLEMS
Antenna problem indicators:
Transmissions from or to the transceiver are poor or absent.
The transceiver’s SWR LED illuminates.
To troubleshoot antenna issues:
1.
Make sure the antenna cable connectors are securely connected to the antenna and to the transceiver.
Make sure any unused antenna connectors are properly terminated.
2.
Check the antenna and antenna cable for any defects or breaks.
3.
Check the cable connector and radio connector for corrosion.
4.
Issue the diagnostic command
STAT
to verify the VSWR and power output of the last transmission.
5.
Check cable continuity.
6.
Replace the cable or connector.
7.
Replace the antenna.
8.
Check the radio output power without the antenna connected.
9.
View the Standing Wave Ratio measurements. At the XtermW prompt, type
VSWR
and press Enter. This displays
the SWR indicator. Values are OK greater than 3:1. Examples of output from issuing the
VSWR
command might
look like either of the following.
+VSWR 03:05:46.253
VSWR Ok.
Or
+VSWR 03:05:31.417
VSWR > 3:1
10.
Replace the transceiver. When replacing a transceiver, if the SD card contains a valid CIM script, remove the SD
memory card from the nonworking transceiver and insert and seat it in the replacement transceiver. The
replacement transceiver will use the CIM script on the SD memory card and its configuration will be the same as
the original transceiver.