User's Manual

ManualsBrandsPowerwave Technologies ManualsElectronicsMulticarrier PCS Power Amplifier

044-05077 Rev. A

3-1

OPERATING INSTRUCTIONS

3-1. INTRODUCTION

This section contains operating instructions for the multicarrier PCS amplifier system.

3-2. LOCATION AND FUNCTION OF AMPLIFIER MODULE CONTROLS AND INDICATORS

Primary +27 Vdc power is applied to the amplifier via an 80-amp circuit breaker (ON-OFF) located

on the left side of the amplifier front panel.

The plug-in amplifier module RF control and indicators, located in the center of the amplifier front

panel between the cooling fans, are shown in figure 3-1. The status and RF control functions are

described in detail in table 3-1. The alarms are described in detail in table 3-2.

Figure 3-1. G3S-1900-80 Amplifier Module RF Control and Indicators

Section

Summary of content (4 pages)

PAGE 1
Section OPERATING INSTRUCTIONS 3 3-1. INTRODUCTION This section contains operating instructions for the multicarrier PCS amplifier system. 3-2. LOCATION AND FUNCTION OF AMPLIFIER MODULE CONTROLS AND INDICATORS Primary +27 Vdc power is applied to the amplifier via an 80-amp circuit breaker (ON-OFF) located on the left side of the amplifier front panel.
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Table 3-1. Amplifier Module RF Control and Indicators Definition NAME +27VDC Indicator +15VDC Indicator +5VDC Indicator -5VDC Indicator RF ON Switch FUNCTION (Note: MCPA = Multicarrier Power Amplifier) Green LED. When lit, indicates that the +27 Vdc supply is greater than +21 Vdc and less than +31 Vdc. If the +27 Vdc indicator goes out, the DC FAIL indicator will illuminate. This indicates that the +27 Vdc voltage dropped below +21 Vdc. Green LED.
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Table 3-1. Amplifier Module RF Control and Indicators Definition (cont.) A ‘Minor Alarm’ will flag a potential fatal problem by the LEDs and the MCPA fault will be in evaluation. A ‘Critical Alarm’ is indicative of a fatal problem. The fault indicator will latch on and the MCPA module will be disabled. A ‘Major Alarm’ indicates a major problem but the MCPA module will not be disabled. Both ‘Major Alarm’ and ‘Critical Alarm’ will be sent to the host system via the MCPA subrack.
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. When overpower is detected: a) MCPA shall shut down (disable) b) Turn on Over Pwr LED c) Set flag for Over Pwr alarm d) The MCPA module shall use a peak power detector to determine the overpower fault. 3-3. INITIAL START-UP AND OPERATING PROCEDURES The amplifier module has two operating controls, both located on the front face of the module: the power ON - OFF switch and the RF ON - ON/OFF/RESET switch. To perform the initial start-up, proceed as follows: 1.