User's Manual

Axell D-SBR 3709S Repeater
PRODUCT DESCRIPTION AND USER’S MANUAL
© Axell Wireless Ltd Doc PN 00038UMCD Rev. 1.6 41
Alarm
Fault and most probable
cause
Recommendation
System Mute
Cause: Repeater amplification is
muted (automatically).
-----
User Mute
Cause: Repeater amplification is
muted (manually) as a result of
an operator action.
-----
Built In Test Cause: Self test. -----
Temperature Fault: High temperature.
Most probable cause: Unit
temperature becomes high.
Excessive heat.
Corrective action: Check the Repeater
case for external causes (sun, hot
environment, air flow is blocked).
Eliminate the reason for excessive
heat.
Donor Power too
Low
The signal from the Donor
antenna is too low.
Check connections and antenna
position.
PAmp Current Fault:
the Pre Amplifier current
exceeds the allowed limits.
Fault in the DL or UL path.
Most probable cause:
Downlink (Uplink) power
amplifier module outputs a low
current.
Corrective action: Check the LEDs in
the Repeater (see 6.1).
RSSI Fault: Fault in the DL or UL path
Most probable cause: Excessively
high input signal
Corrective action: Check the LEDs in
the Repeater (see 6.1).
VSWR
Fault: The return loss of the
Downlink antenna or cable
connection exceeds 6 dB (VSWR
3:1).
Most probable cause: 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 again.
Corrective action:
Check cable
connected to the antenna.
Reduced Gain by
IMOP
Description:
Shows when the
iMOP mechanism was activated
in order to re
spond 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.
Corrective action: 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
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.