User's Manual

MCPA TBS SYSTEM USER MANUAL
ENU:1-0-0 Copyright Comba Telecom Ltd., March 2009. All rights reserved Page3-20
3.1 CONTROLS AND INDICATORS
Before system initial startup, to understand the controls and indicators is very important for
operator. TBS system provides Circuit Breaker and Enable Switch and some LED indicators
on the front panel of MCPA Module and System Controller.
3.1.1 MCPA CONTROL AND INDICATOR
On the Front panel of MCPA Module, the controls and LED indicators are showed in following
figure. The function is explained in table 1.
Figure 1: Controls and Indicators on Front Panel of MCPA Module
Table 3: Functions of Controls and Indicators on MCPA Module
Control/Indicators Status Functions
ON Provide DC power to MCPA
Circuit Breaker
OFF
Shut the DC power to MCPA. Before plug out MCPA, the Circuit
Breaker should be push to OFF status
ENABLE Turn on RF output from MCPA. The Enable LED is in green color
Enable Switch
DISABLE
Turn off RF output power from MCPA, but System Controller can
still detect MCPA and feedback the status. Before turn off Circuit
Breaker, the switch had better to turn to DISABLE status. The
Enable LED is in black color
Green 27VDC power supply is normal
Power LED
Black (OFF) 27Vdc power supply is not available.
Green The PA is at ENABLE status
Enable LED
Black (OFF) The PA is at DISABLE status
Green MCPA is in normal operation, no alarms Status LED
Amber MCPA is abnormal and there should be some Minor Alarm
LED Indicators