User's Manual

3. GENERAL OPERATING INFORMATION

3.1. INTRODUCTION

This section contains operating instructions for the amplifier.

3.2. STATUS INDICATORS

The function of the amplifier status indicators and is described in Table 3-1.

Table 3-1. Amplifier Status Indicators

STATUS LED FUNCTION

DC ON

Green LED. Illumination indicates DC Power has been applied.

LOW OUTPUT

Red LED. Activates when the output power drops to approximately

70-80% of set output power.

HIGH VSWR

Red LED. Activates when load VSWR exceeds approximately

3.5:1.

HIGH TEMP

Red LED. Activates when the amplifier exceeds a safe operating

temperature.

3.3. INITIAL STARTUP

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

Check to ensure that all input and output cables are properly connected and tightened.

Note: Use high quality coaxial cable and connectors. Properly install and solder all connectors for

reliability.

CAUTION:

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

amplifier are properly terminated in 50 ohms. Do not operate the

amplifier without a load attached. Refer to Table 1-2 for input

power requirements. Excessive input power will damage the

amplifier.

NOTE:

The output coaxial cable between the amplifier and the antenna

must be 50 ohm coaxial cable.

2. Apply DC power to the amplifier. Verify that the power supply measures 13.8 ± 0.1VDC. The fan

will come on immediately for a few seconds and then turn off.

3. Visually check the indicators on each amplifier module, and verify the following:

a. The DC PWR ON indicator (green) should be on.

b. All ALARM LED indicators (red) should be off.

4. Turn on external exciter/transceiver and apply RF input signal. The fan should turn on after

approximately 3 seconds.