Powerwave Technologies 5JS0030 User Manual

®

INSTALLATION & SERVICE

MANUAL

SINGLE CHANNEL

POWER AMPLIFIER

NTGS86AA

869-894 MHz

25 WATTS AVERAGE POWER

12 August 1998

Powerwave Technologies, Inc. Tel: [phone]
2026 McGaw Avenue Fax: [phone]
Irvine, CA 92614 Web Site: www.pwav.com

TABLE OF CONTENTS

044-05045 Rev. A

Par. Section 1 Page
No. General Description No.

1-1 Introduction ............................................................................................ 1-1

1-2 General Description .............................................................................. 1-1

1-3 Functional and Physical Specifications .................................................. 1-1

Section 2

Installation

2-1 Introduction ............................................................................................ 2-1

2-2 Electrical Service Recommendations..................................................... 2-1

2-3 Unpacking and Inspection...................................................................... 2-1

2-4 Installation Instructions........................................................................... 2-2

2-5 Amplifier Module Power, Alarm, and Control Connector........................ 2-2

2-6 RS485 Connector................................................................................... 2-3

Section 3

Operating Instructions

3-1 Introduction ............................................................................................ 3-1

3-2 Initial Start-Up and Operating Procedures ............................................. 3-1

Section 4

Principles of Operation

4-1 Introduction ............................................................................................ 4-1

4-2 RF Input Signal ...................................................................................... 4-1

4-3 RF Output Load...................................................................................... 4-1

4-4 Amplifier Functional Description............................................................. 4-1

4-4.1 Main Amplifier ........................................................................................ 4-2

4-4.2 Amplifier Monitoring ............................................................................... 4-3

4-4.3 Amplifier Module Cooling ....................................................................... 4-3

4-5 Power Distribution .................................................................................. 4-3

Section 5

Maintenance

5-1 Introduction ............................................................................................ 5-1

5-2 Periodic Maintenance............................................................................. 5-1

5-3 Test Equipment Required For Test ........................................................ 5-1

5-4 Performance Test................................................................................... 5-2

5-4.1 Amplifier Performance Test.................................................................... 5-2

5-5 Field Replacement of the Module .......................................................... 5-7

2

TABLE OF CONTENTS (Continued)

Par. Section 6 Page
No. Troubleshooting No.

6-1 Introduction .............................................................................................6-1

6-2 Troubleshooting ......................................................................................6-1

6-3 Return for Service Procedures................................................................6-1

6-3.1 Obtaining an RMA...................................................................................6-1

6-3.2 Repackaging for Shipment......................................................................6-1

LIST OF ILLUSTRATIONS

Figure Page
No. No.

1-1 NTGS86AA Single Channel Power Amplifier ......................................... 1-3

2-1 Power, Alarm, and Control Connector (18-Pin Molex) ........................... 2-2

2-2 RS485 Connector................................................................................... 2-3

4-1 NTGS86AA Single Channel Power Amplifier Functional Block Diagram 4-2

5-1 NTGS86AA Amplifier Test Setup Diagram ............................................ 5-3

5-2 RF Input (CDMA Source) ....................................................................... 5-3

LIST OF TABLES

Table Page
No. No.

1-1 NTGS86AA Single Channel Power Amplifier Functional Specifications.....

1-2

2-1 18-Pin Molex Alarm, Control, and Power Connections .......................... 2-3

2-2 RS485 Pin Definition.............................................................................. 2-3

5-1 Periodic Maintenance............................................................................. 5-1

5-2 Test Equipment Required ...................................................................... 5-2

5-3 Single Channel Power Amplifier Test Data Sheet.................................. 5-4

6-1 Troubleshooting ..................................................................................... 6-1

3

Section

1

GENERAL DESCRIPTION

1-1. INTRODUCTION

This manual contains information and procedures for installation, operation, and maintenance of
Powerwave’s model NTGS86AA single channel power amplifier (SCPA). The manual is organized
into six sections as follows:

Section 1. General Description
Section 2. Installation
Section 3. Operating Instructions
Section 4. Principles of Operation
Section 5. Maintenance
Section 6: Troubleshooting

1-2. GENERAL DESCRIPTION

The NTGS86AA is a linear, single-channel power amplifier that operates in the 25 MHz frequency
band from 869 MHz to 894 MHz. It is designed as a self-contained module with EMI containment
for use in both an indoor and outdoor North American Cellular Base Stations. Its flat base plate
allows for mounting on a flat thermal-absorbing surface to provide adequate heat dissipation,
thereby avoiding the use of any built-in fans.

Each amplifier module has a power, alarm, and control connector that allows the host system to
monitor the amplifier module performance. Primary power for the amplifier is +26 Vdc.

1-3. FUNCTIONAL AND PHYSICAL SPECIFICATIONS

Functional and physical specifications for the amplifier are listed in table 1-1.

4

Table 1-1. NTGS86AA Single Channel Power Amplifier Functional Specifications

Frequency Range 869-894 MHz (25 MHz Bandwidth)
Maximum Average Input Power 13 dBm
Continuous Average Output Power 25 Watts
Spurious Emissions @ Maximum

Rated Output Power (44 dBm)

RF Gain 43 ±2 dB
Gain Flatness:
Output Protection: Mismatch Protected
Input Port Return Loss: VSWR 2:1 Max.
Out of Band Spurious: Less than -14 dBm
DC Input Power:
Operating Temperature: -15 ºC. to +85 ºC. (heatsink temperature)
Storage Temperature: -40 ºC. to +70 ºC.
Operating Humidity: 5 % - 95 % Relative Humidity (Noncondensing)
Storage Humidity: 5 % - 95 % Relative Humidity (Noncondensing)
DC Input, Alarm, and Control

Connector:
RF Input Connector: SMA Female
RF Output Connector: SMA Female
RF Sample Connector:
Dimensions (inches): Width: 12.515; depth: 9.900; height: 1.670

Frequency Requirement Meas. Bandwidth
750 kHz offset -46 dBc 30 kHz

1.23 MHz offset -61 dBc 30 kHz

1.5 MHz offset -61 dBc 30 kHz

1.98 MHz offset -61 dBc 30 kHz

±

0.15 dB for any 2-MHz band within frequency range.

+26 ± 0.5 Vdc, 260 mV p-p max. ripple, ≤350 watts

18-Pin Molex

SMA Female (27±1 dB below RF Output)

5

RF OUTPUT

RF INPUT

9.900

12.515

18 PIN MO LEX CONNE CTOR

RS485 CONNECTOR

Figure 1-1. NTGS86AA Single Channel Power Amplifier

6