DIGIMINI AMERICAS REPEATERS
PRODUCT DESCRIPTION AND USER’S MANUAL
Cobham Wireless
–
Coverage
Date: 6-Jul-17
www.cobham.com/wireless
Document number: 00031UM
Rev. 6.3
Page |
6-6
Alarm Descriptions
Alarm
Fault and most probable cause and Recommendation
Built In Test
Description: Self test.
Possible causes: Hardware failure, Circuitry failure, Software failure
Recommended action: Wait 12 hours before contacting Cobham Wireless Support
Temperature
Description: High temperature indicated
Possible causes: Unit temperature becomes high due to excessive heat.
Recommended 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
Description: The signal from the Donor antenna is too low.
Recommended action: Check connections and antenna position.
(PAmp) Current
Description: Generates an alarm when the Power exceeds the allowed limits.
Possible causes: Fault in the DL or UL path, Downlink (Uplink) power amplifier
module outputs a low current.
Recommended action: Check the LEDs status in the Repeater
System Mute
Description. Generates an alarm when Repeater amplification is muted
(automatically).
Possible causes: Oscillation detected, Power at coverage port too high, Synthesizer
failure, Hardware failure, Software failure, Out-of-band emissions out of spectrum,
Interferer Power exceeded, Temperature.
Recommended action: Contact Cobham Wireless Support
User Mute
Description: Repeater amplification is muted.
Possible causes: Manual shutdown performed by operator.
Recommended action: Review unit’s log
Reduced Gain by
IMOP
Description: Alarm is generated when the IMOP mechanism was activated and the
system reduces gain in order to respond to detected oscillations.
Recommended 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).
Interferer Power
Exceeded
Description: Alarm is activated if external interference is at a level that may affect
the operation of the unit.
Recommended action: It is recommended to identify the source of the interference
and distance the source or the unit from each other.
NOTE: When the interferer is at HIGH Level it can cause the RSSI alarm to be ON
as well
RSSI
Description: Generates an alarm when a high donor input signal causes system
gain reduction
