User Manual

A XELL D-MBR-USA R EPEATER
PRODUCT DESCRIPTION AND USER’S MANUAL
44 Axell Wireless Ltd
Alarm Fault and most probable cause and Recommendation
Most probable cause: Downlink (Uplink) power amplifier module outputs a
low current.
Recommendation: Check the LEDs in the Repeater
RSSI Fault in the DL or UL path
Most probable cause: caused by a excessively high input signal
Recommendation: Check the LEDs in the Repeater
VSWR
This alarm is triggered when the return loss of the Downlink antenna or
cable connection exceeds 3 dB (VSWR 6:1).
This alarm provides an indication of the status of the cable connected to
the antenna. If a cable is defective, the VSWR is decreased and the alarm
is triggered.
Reduced Gain by
IMOP
Shows when the IMOP mechanism was activated in order to respond to
detected oscillations.
GREEN – normal operation – no oscillations were detected.
RED – oscillations were detected and the system reduced gain in order to
eliminate the oscillations.
Check the Donor and Mobile antenna installations for isolation. After
isolation is within the required levels, the system will automatically
increase gain (since it will no longer affect oscillations and) and the LED
will turn GREEN.
Interferer Power
Exceeded
Indicates if there is any external interference at a level that may affect the
operation of the unit.
Green – low or no interference. Unit operation is not affected.
Red – high external interference that may affect the operation of the unit. It is
recommended to identify the source of the interference and distance the
source or the unit from each other.