User's Manual

Page 17 of 21
IDEN Digital Repeater Installation
Manual
13 BDA MONITORING AND ALARMS
The BDA monitors its functions and alarms are declared when necessary.
Some of these alarms illuminate a red LED on the BDA monitor box.
13.1 LINK ALARMS (up link & down link)
13.1.1 Power Amplifier
Uplink Forward power amplifier Current Alarm: Declared when the Power Amplifier
current is above or below its specified limits.
Downlink Threshold forward output power alarm: Declared when the Power Amplifier
output is lower the specified limits.
13.1.2 Channeler
Declared when the Channeler current is above or below its specified limits.
13.1.3 Channeler lock-detect
Declared when the Channeler synthesizers are unlocked.
13.1.4 DDF Current.
Declared when the DDF current (include Internal FAN) is above or below its specified
limits.
13.1.5 DDF Communication.
Declared when Repeater Controller failed to communicate with The DDF unit.
13.1.6 VSWR >3:1.
This unit is include VSWR >3:1, Declared when the return loss of the downlink
antenna or cable connection exceeds 6 dB (=VSWR 3:1).
13.2 GENERAL ALARMS
13.2.1
Temperature
Declared When the chassis temperature exceeds 60 C.
13.2.2
Main Voltage
Declared when the Power Supply voltage is below or above its limits.
13.3 Measurements.
13.3.1 Temperature Measurements
13.3.2 Downlink Forward Power Measurements.