User's Manual

Troubleshooting Nexus FT RMR
4-4 044-05326 Rev B
42 Antenna
isolation
WBA #,
Channel #,
UL/DL
Warning Low antenna isolation. The antenna isolation is lower than the
gain set. Gain is reduced by 10dB – 13dB below the oscillation
point. Suggested remedy: Decrease gain or increase antenna
isolation
Error Low antenna isolation at lowest gain. The gain has been reduced
as much as possible but the oscillation still remains. The amplifier
is turned off. Suggested remedy: Decrease gain or increase
antenna isolation
Ceasing Normal operation again, that is no oscillation can be detected
13dB above the gain set
48 Battery
backup fault
External Error If a battery backup unit alarm is connected to external alarm 2,
then the operator can configure the RMR to display this alarm
when the battery backup unit indicates alarm
Ceasing The cause of the alarm has ceased
70 Bad table
alarm
CU Error Requested table contains incorrect information (SW error)
71 Table not
found
CU Error Requested table not found in the database (SW or calibration
error)
72 Table
database
error
CU Error Table database not found (calibration error)
80 Antenna
SWR alarm
Donor
antenna
service
antenna
Error Too low antenna return loss, caused either by cables, connectors,
or antenna problems.
Suggested remedy: Check antenna and cables
Ceasing The cause of the alarm has ceased
90 FON power
alarm
FON RF Error A DC voltage on a FON PCBA is out of range. Suggested remedy:
Replace the FON PCBA.
Ceasing The cause of the alarm has ceased
245 Not In
Allowed Area
CU None RMR is moved from the operating area and the RF HW is
switched on or off
Table 4-2 Alarm Troubleshooting (Continued)
ID Alarm Text Alarm Unit Alarm Description
DRAFT