Powerwave Technologies 5JS0061 User Manual

869-894 MHz

Installation & Service

Manual

Model NTGS86AB

Single-Channel Power Amplifier

044-05126 Rev. A October 2002

 Copyright Powerwave Technologies, Inc., October 2002. All rights reserved

NTGS86AB Installation & Service Manual

© 2002 Powerwave Technologies Incorporated. All rights reserved.

Powerwave Technologies, and the Powerwave logo are registered trademarks

Powerwave Technologies, Inc. reserves the right to make changes to the documentation and
equipment, including but not limited to component substitution and circuitry changes. Changes that
impact this manual may subsequently be incorporated in a later revision of this manual.

October 2002

Powerwave Technologies, Inc. Tel: [phone]
1801 East St. Andrew Place [phone]
Santa Ana, CA 92705 Fax: [phone]
Web Site: www.powerwave.com

 Copyright Powerwave Technologies, Inc., October 2002. All rights reserved

044-05126 Rev. A ii October 2002

NTGS86AB Installation & Service Manual

Table Of Contents

Paragraph 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

1-4 Equipment Changes ....................................................................................................................................... 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

2-8 Molex 18-Pin Power, Alarms, & Controls 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 Input Amplifier and Pre-Distortion Amplifier........................................................................................... 4-1

4-4.2 Driver Amplifier .............................................................................................................................................. 4-1

4-4.2 Main Amplifier ................................................................................................................................................ 4-2

4-5 Amplifier Module Cooling ............................................................................................................................ 4-2

4-6 Power Distribution......................................................................................................................................... 4-3

Section 5

Maintenance

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

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

5-3 Amplifier Module Field Replacement ....................................................................................................... 5-1

Section 6

Troubleshooting

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

044-05126 Rev. A October 2002

 Copyright Powerwave Technologies, Inc., October 2002. All rights reserved

iii

NTGS86AB Installation & Service Manual

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

List Of Illustrations

Figure Page
No. No.

1-1 NTGS86AB Amplifier Isometric View......................................................................................................... 1-3

1-2 NTGS86AB Amplifier Top and Side Views ................................................................................................ 1-3

2-1 NTGS86AB Amplifier Front and Side Connectors .................................................................................... 2-2

2-2 Molex 18-Pin Power, Alarms, and Controls Connector ..........................................................................2-3

4-1 NTGS86AB Single-Channel Power Amplifier Block Diagram............................................................... 4-2

List Of Tables

Table Page
No. No.

1-1 NTGS86AB Single-Channel Power Amplifier Functional Specifications ........................................... 1-2

2-1 Molex 18-Pin Power, Alarms, and Controls Connector Signal Descriptions..................................... 2-3

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

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

044-05126 Rev. A October 2002

 Copyright Powerwave Technologies, Inc., October 2002. All rights reserved

iv

NTGS86AB Installation & Service Manual

Section 1 General Description

1-1 Introduction

This manual contains information and procedures for installation, operation, and maintenance of
Powerwave’s model NTGS86AB Single-Channel Power Amplifier (SCPA) module. 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 NTGS86AB amplifier module is a CDMA signal source, linear, single-channel power ampli­fier (SCPA) module that operates in the 25 MHz frequency band from 869 MHz to 894 MHz. The
amplifier output is typically 25 watts with a gain range between 41 and 45 dB. The amplifier is de­signed to be mounted in an enclosure with EMI containment. Its flat base plate allows for mount­ing on a flat thermal-absorbing surface to provide adequate heat dissipation.

As shown in figure 1-1, each amplifier module has an RF input, RF output, and RF sample con­nectors, as well as an 18-pin power, alarm, and control interface connector that allows the host
system to provide power and monitor the amplifier module performance. Primary power for the
amplifier is +26 Vdc.

Physical dimensions of the amplifier module are shown in figure 1-2.

1-3 Functional & Physical Specifications

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

1-4 Equipment Changes

Powerwave Technologies, Inc. reserves the right to make minor changes to the equipment, in­cluding but not necessarily limited to component substitution and circuitry changes. Changes that
impact this manual may subsequently be incorporated in a later revision of this manual.

 Copyright Powerwave Technologies, Inc., October 2002. All rights reserved

044-05126 Rev. A 1-1 October 2002