User's Manual

SPA9323-30C Installation & Service Manual

044-05178 Rev. A 3-1 October 2004

Section 3 Operating Instructions

3-1 Introduction

This section contains operating instructions for the single channel cellular amplifier system.

3-2 Location And Function Of Amplifier Indicators

The front panel LED, located to the right of the 20-pin data connector, indicates the amplifier

status.

• Green indicates the amplifier is operating properly.

• Red indicates an alarm or off condition.

The nature of the alarm can only be determined through the software interface of the Base-

Transceiver System (BTS). Please consult the BTS manual for details on monitoring amplifier

status.

Figure 3-1 Front Panel Indicators

3-3 Initial Start-Up And Operating Procedures

To perform the initial start-up, proceed as follows:

1. Verify that all input and output cables are properly connected.

CAUTION

Before applying power, make sure that the input and output of the amplifier

are properly terminated at 50 ohms. Do not operate the amplifier without a

load attached. Refer to table 1-1 for input power requirements. Excessive

input power may damage the amplifier.

NOTE

The output coaxial cable between the amplifier and the antenna must be 50-

ohm coaxial cable. Use of any other cable will distort the output.

2. Turn on supply that provides -48 Vdc to the amplifier system. Do not apply an RF signal to

the amplifier system

3. Verify that the LED is lit and the color Green.

4. Turn on external exciter/transceiver and apply RF input signals. Adjust the input power to

achieve the desired output power. Refer to the BTS manual for instructions on performing

this step.