User Manual

Table Of Contents

G3L-2100-30-B/G3L-2100-30-C Operation Manual

Section 2 Operation

2-1 Introduction

This section contains operating instructions for the G3L-2100-30-B or G3L-2100-30-C wideband

power amplifier (WPA).

2-2 Initial Start-Up and Operating Procedures

The manual main power supply ON/OFF switch is located on the WPA front panel (refer to figure

1-1 and paragraph 1-5 for status indicator conditions). Turn on the WPA as described in the steps

that follow.

CAUTION

Before applying power, make sure that the input and output of the system is properly

terminated at 50 ohms. Do not operate the system without a load attached. Refer to

appendix A for input power requirements. Excessive input power may damage the

amplifier.

WARNING

Never remove or install coaxial cables on either the subrack input or output port when

the power amplifier is turned on. Operating the power amplifier while disconnecting

and connecting RF cables may damage the equipment and/or cause personal injury.

1. Verify that all input and output RF cables are properly connected. Do not apply an RF signal

to the WPA.

2. Turn on the main manual power supply switch (1=ON, 0=OFF). The WPA will self-test and

initialize (<15 sec), then establish communication with the base station via the TLCI bus.

When completed, the WPA notifies the base station that it is ready to be taken into opera-

tion. The WPA then remains in a standby state until commanded by the base station. The

command received from the base station includes the operating band and based on that

band, the pilot frequency sets to 10 MHz lower than the lowest carrier in the operating band.

NOTE

When the WPA is switched on in temperature conditions below the minimum operat-

ing temperature (-10ºC), self-heating is performed until an acceptable operating tem-

perature exists.

NOTE

The main manual power supply switch is also used to reset the WPA by manually set-

ting the switch to OFF then back to ON.

044-05133 Rev. A 2-1 March 2003