User's Manual

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SMR 700 800 HIGH POWER PS NFPA CLASS A SIGNAL BOOSTER
PRODUCT DESCRIPTION AND USER’S MANUAL
Cobham Wireless Coverage
Date: 22-Dec-16
www.cobham.com/wireless
Doc. No.00068CDUM Rev. 2.3 Page | 58
6.4 Faults and Summary of Activated Alarms
The table in this section summarizes the fault descriptions and the various alarms generated under the given
fault conditions.
Depending on the fault, alarms are activated on any of the following interfaces:
External alarms connector connector pinout is described in section
6.2
Axell CMU Alarms screen described in section
6.3.2.
Band dedicated (700-800) Alarms screen described in section
6.3.1
NOTE: Alarm connector pin 4&7 and 3&6 are normally closed (no active alarms) and open when an alarm
is activated.
Fault Description Activated Alarms
No DC input to the repeater. External Alarms connector pins 4 and 7 are activated.
Donor antenna cable is disconnected
(no load on Donor antenna port)
Two alarms are activated:
On the External Alarms connector - pins 3 and 6
are activated.
In the Axell CMU Alarm screen, the VSWR Alarm
Base cable disconnected alarm is activated.
Incompatible VSWR is detected on the
UL signal transmitted via the Donor
antenna.
Four alarms are activated:
On the External Alarms connector - pins 3 and 6
are activated.
In the Axell CMU Alarm screen, two alarms are
activated:
VSWR Alarm Base cable
disconnected
VSWR Alarm Uplink
In the 700/800 Alarms screen, the VSWR alarm in
the Uplink column is activated.
Service antenna cable is disconnected
(no load on Service antenna port), but
a DL signal (from the BTS)
is
detected
by the Booster.
The two alarms below are immediately activated:
In Axell CMU Alarm screen, VSWR Alarm DL.
In the 700/800 Alarms screen, the alarm VSWR in
the Downlink column is activated.
Followed by the activation of this alarm:
On the External Alarms connector - pins 3 and 6.