Powerwave Technologies 5JS0048 User Manual

935-942 MHz

System Integration Manual

Booster Amplifier Subrack (BAS) System

935-942 MHz, 91 Watts Nominal

044-05075 Rev. B January 2001

Booster Amplifier Subrack System Integration

Manual

Table Of Contents

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

1-3.1 MCR20930-1-2 Subrack Specifications......................................................................................................1-3

1-3.2 GL3-900 Series Amplifier Specifications ....................................................................................................1-5

1-4 Booster Amplifier Subrack Major Components........................................................................................1-8

1-5 Equipment Changes......................................................................................................................................1-8

Section 2

Installation

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

2-2 Site Survey.....................................................................................................................................................2-1

2-3 Electrical Service Recommendations..........................................................................................................2-1

2-4 Air Conditioning............................................................................................................................................2-1

2-5 Unpacking and Inspection...........................................................................................................................2-2

2-6 Installation Instructions...............................................................................................................................2-3

2-7 Amplifier Module Power, Alarm, Control, and RF Connector................................................................2-4

2-8 Remote Control and Status..........................................................................................................................2-5

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 System Functional Description...................................................................................................................4-1

4-5 Multi-Carrier Power Amplfier Functional Description.............................................................................4-2

4-5.1 Predriver Amplifier........................................................................................................................................4-3

4-5.2 Three Stage Driver Amplifier.......................................................................................................................4-3

4-5.3 Main Amplifier...............................................................................................................................................4-3

4-5.4 Alarm Monitoring and Control ....................................................................................................................4-3

4-5.5 Loop Control Circuit .....................................................................................................................................4-3

4-6 Amplifier Module Cooling...........................................................................................................................4-4

4-7 Power Distribution........................................................................................................................................4-4

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Table Of Contents (Continued)

Par. Section 5 Page
No. Maintenance No.

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

5-4.1.1 Amplifier Spurious Emissions Test............................................................................................................5-2

5-4.1.2 Gain Test .........................................................................................................................................................5-2

5-4.1.3 Input Return Loss.........................................................................................................................................5-2

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

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

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

List Of Appendices

Page

Appendix No.

A Booster Amplifier Subrack Backplane Wiring Diagram ..........................................................................A-1

B Disrtibution Printed Circuit Board Pinout Location.................................................................................B-1

C Power Setting Procedure..............................................................................................................................C-1

List Of Illustrations

Figure Page
No. No.

1-1 VVA, Voltage Regulator and Dip Switch Pin Configuration...................................................................1-2

1-2 Booster Amplifier Subrack System-Top View ...........................................................................................1-9

1-3 Booster Amplifier Subrack Sysytem-Front View....................................................................................1-10

1-4 Booster Amplifier Subrack System-Side View (Front Door Open)......................................................1-11

1-5 Booster Amplifier Subrack System-Side View with Fans Removed....................................................1-11

1-6 Booster Amplifier Subrack-Backplane.....................................................................................................1-12

1-7 GL3-900 Series Amplifier............................................................................................................................1-13

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1-8 GL3-900 Series Amplifier – Rear, Top, Front Views ...............................................................................1-14

Table Of Contents (Continued)

List Of Illustrations (Continued)

2-1 J5 Alarm Connector .......................................................................................................................................2-4

2-7 Front Panel POWER IN Connector .............................................................................................................2-5

4-1 System Block Diagram..................................................................................................................................4-1

4-2 G3L-900-50/60-005 Multi-Carrier Power Amplifier Functional Block Diagram ......................................4-2

5-1 G3L-900-50/60-005 Amplifier Test Setup Diagram....................................................................................5-3

List Of Tables
Table Page
No. No.

1-1 Truth Table (Variable Attenuator) .............................................................................................................. 1-2

1-2 Booster Amplifier Subrack System Specifications ...................................................................................1-3

1-3 2-Way Splitter Electrical Specifications.....................................................................................................1-4

1-4 2-Way Combiner Specifications..................................................................................................................1-4

1-5 G3L-900-Series Ampifier Electrical Specifications....................................................................................1-5

1-4 G3L-900-Series Amplifier Mechnaical Specifications..............................................................................1-6

1-7 GL3-900 Series Amplifier Environmental Specifications..........................................................................1-7

1-8 Major BAR System Components................................................................................................................1-8

2-1 Remote Control and Status Specifications................................................................................................2-5

2-2 J5 Alarm Connector Pin Designation.........................................................................................................2-4

2-3 Front Panel POWER IN Connector Pin Designations.............................................................................2-5

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

5-2 Test Equipment Required.............................................................................................................................5-1

5-3 Multichannel Power Amplifier Test Data Sheet.......................................................................................5-4

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

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Booster Amplifier Subrack System Intergration Manual

®

© 2001 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.

January 2001

044-05075 Rev. B ii January 2001

Booster Amplifier Subrack System Intergration Manual

Powerwave Technologies, Inc. Tel: [phone]
1801 E. St. Andrew Place Fax: [phone]
Santa Ana, CA 92709 Web Site: www.powerwave.com

044-05075 Rev. B iii January 2001

PRELIMINARY Booster Amplifier Subrack System Integration Manual

Section 1. General Description

1-1 Introduction

This manual contains information and procedures for the installation, operation, and maintenance
of Powerwave Technologies, Inc.’s (Powerwave’s) Booster Amplifier Subrack (BAS) system. This
manual is organized into the following sections:

Section 1. General Description Appendix A: Backplane Wiring Diagram
Section 2. Installation Appendix B: Distribution PCB Pinout Location
Section 3. Operating Instructions Appendix C: Power Setting Procedure
Section 4. Principles of Operation
Section 5. Maintenance
Section 6: Troubleshooting

1-2 General Description

Engineered to operate in a 2-way transceiver paging base station, the BAS system is a linear,
Multi-Carrier Power Amplifier (MCPA) system that operates in the 5 MHz frequency band from
935 MHz to 940 MHz. The system integrates the model MCR20930-1-2 Booster Amplifier
Subrack (BAS) with two model G3L-900-50-005 MCPAs to deliver a composite RF output of

75.8 Watts (nominal), after combined losses. The system can also integrate two model G3L-900­60-005 MCPAs to deliver a composite RF output of 91 Watts (nominal), after combined losses.

Designed to function as a subrack (see Figures 1-2 thru 1-6) in the host base station, the enclo­sure has a one inch (right and left side) flanged front panel and eight mounting holes (four on
each side) to secure the Subrack into place (refer to Figure 1-3 for mounting hole locations). To
aid in maintaining the system’s operating temperature, the BAS is equipped with two cooling fans
mounted on the front access door (see Figures 1-3 and 1-4). The G3L-900-50-005 amplifier dis­places 1,672 BTUs of heat at full power. The G3L-900-60-005 amplifier displaces approximately
1,900 BTUs of heat at full power.

The composite input signal is applied to a 30dB 10W input attenuator, followed by a voltage vari­able attenuator that is controlled via dip switches on the front panel (refer to Table 1-1 and Figure
4-1). The maximum composite input signal may not exceed +31dBm. The composite signal is
then fed to a two-way power splitter. The signals are applied to the amplifiers, and the amplifier
outputs are combined again (refer to Tables 1-2 through 1-7 for specifications). With both ampli­fiers installed, the system provides 20dB of gain.

The BAS also houses a distribution printed circuit board (PCB) for internal power and alarm distri­bution (refer to Appendix B). Accessible from the front panel is the DB9 external ALARM con­nector, the RF IN and RF OUT type N connectors.

Additionally, the front panel provides access to the +27 Vdc POWER IN connector, visibility of the
two MCPA’s fault alarm LED indicators and the GAIN CTRL dip switch. Refer to Table 1-1 for the
dip switch truth table and Fiqure 1-1 for pin designations.

With the access door open, the two amplifier modules are visible. All solid-state, the MCPAs are
designed for parallel operation for high peak power output. Their modular construction and
unique and highly effective LED-based operational status and fault indicators help minimize
downtime. The turn-on and turn-off sequence of voltages are fully automatic, as is overload pro­tection and recycling. Inadvertent operator damage from front panel manipulation is virtually im­possible. Refer to Figures 1-7 and 1-8 for drawing views of the amplifier module.

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Table 1-1 Truth Table Input Variable Attenuator

Pin 1 Pin 2 Pin 3 Pin 4 Attenuation

+5Vdc +5Vdc +5Vdc +5Vdc 0dB
+5Vdc +5Vdc +5Vdc 0Vdc 1dB
+5Vdc +5Vdc 0Vdc +5Vdc 2dB
+5Vdc +0Vdc +5Vdc +5Vdc 4dB
+5Vdc +5Vdc +5Vdc 0Vdc 8dB

0Vdc 0Vdc 0Vdc 0Vdc 15dB

Vout

GND
GND

NC
NC

GND
GND

+27Vdc (Vin)

VOLTAGE

REGULATOR

1
2
3
4
5
6
7
8

+5Vdc

DIP SWITCH

SOCKET

1
2
3
4
5

VARIABLE

ATTENUATOR

1
2
3
4
5
6
7
8
9

10

Figure 1-1 Variable Attenuator, Voltage Regulator and Dip Switch Socket Pin Configuration

OUTPUT

GND

GND
GND

GND
INPUT

1-3 Functional and Physical Specifications

The BAS system’s functional and physical specifications are listed in Table 1-2. A functional block
diagram is provided in Section 4 of this manual to illustrate the system’s operational layout.

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1-3.1 MCR20930-1-2 Subrack Specifications

Table 1-2 MCR20930-1-2 Booster Amplifier Subrack System Specifications

Frequency 935-940 MHz
Gain

+20 dBm, ± 0.2 dBm

RF Input Power +31 dBm composite w/variable attenuator set to 0dB at-

tenuation.
+46 dBm composite w/variable attenuator set to 15 dB at-

tenuation.
RF Output Power:
G3L-900-50-005

G3L-900-60-005
Phase Variation

+47 dBm (50 Watts) nominal, 60 Watts (max.)

+47.8 dBm (60 Watts) nominal, 75 Watts (max.)

± 5°
Alarms +5 Vdc TTL
D.C. Power + 27 Vdc, 55 Amps max
Total System Return Loss -19 dBm
Channel Spacing 12.5 KHz
Operating Temperature 0 to 65 degrees C
Subrack Dimensions 12.22(H)x*17(W)x24.5(D) inches
Weight (Fully assembled) Approximately 80 Pounds (36.28 kilograms)

*Note: Does not include 1-inch right and left side mounting flanges.

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Table 1-3 Electrical Specifications for 2-Way Splitter

Insertion Loss
Amplitude Balance

Insertion Loss Flatness Over Frequency

-33dB Min. (TBD on actual part)

-48dB Max.

±0.2dB Max.
±0.3dB Max.

Input/Output Return Loss -20dB Min.
Port to Port Phase Delta

±5 Degrees Max.
Port to Port Isolation -20.0dB Min.
IP3 (Input Power = 5dBm) -90dBc Min.
Power Handling (Fixed Attenuator) 20 Watts Max.
Power Handling (Variable Attenuator) 3.16 Milliwatts Max.

Table 1-4 Electrical Specifications for 2-Way Combiner

Insertion Loss -0.6 dB (TBD on actual parts)
Amplitude Balance
Insertion Loss Flatness Over Frequency

±0.2dB Max.

±0.3dB Max.

Input/Output Coupled Port Return Loss -18.0 dB Min.
Port to Port Phase Delta

±5 Degrees Max.

Port to Port Isolation -20.0dB Min..
Power Handling 120 Watts
Sampling Coupler

-25dB ±1dB
Sampling Coupler Directivity -18.0 dB Min.
IP3 (Input Power = TBD) -100 dBc Min

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1-3.2 GL3-900 Series Amplifier Sprecifications

Table 1-5 G3L-900 Series Amplifier’s Electrical Specifications

Frequency Range 935-940 MHz
Channel Spacing 12.5 KHz
Output Power:

GL3-900-50-005
GL3-900-60-005

Input Power -10.0 dBm max.
RF Gain

GL3-900-50-005
GL3-900-60-005

+47 dBm (50 Watts) nominal, 60 Watts (max.)
+47.8 dBm (60 Watts) nominal, 75 Watts (max.)

+58.8 dB ±1.0 dB @ +27Vdc, 25 C.
+58.8 dB ±1.0 dB @ +27Vdc, 25 C

RF Gain Flatness over the

±0.1 dB over any 1.25 MHz (over the frequency range).

operating frequency range
Gain Flatness:
Normal Operating Voltage

±0.5 dB (935 MHz – 940 MHz)

+27 Vdc ±1V Nominal (±5%) 1Vpp ripple (100-120 Hz) max.
Current Consumption:
GL3-900-50-005

GL3-900-60-005

20 Amps @ 27 Vdc, 25 °C, Prf = 50 Watts average

27 Amps @ 27 Vdc, 25 °C, Prf = 50 Watts average
Abnormal Operating Voltage +21 Vdc to below +26 Vdc. Above +28 Vdc to +29 Vdc.
RF Gain variation by Temp &

TBD

Voltage
Gain Variation Over Dynamic

±0.1 dB max./20 dB for 0 to –20 dB rated power output
Range

Intermodulation Distortion
In-Band Spurious
Input/Output VSWR.

-65 dBc min. (Main signal power to Spurious @ (12.5 kHz)

-55 dBc min @ +23 to +24 Vdc

1.5: 1 max @ 65 ± ºC.
Load Stability Infinite VSWR. all phases
Output Isolation 20 dB min. (shall incorporate an output isolator)

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Table 1-6 G3L-900 Series Amplifier’s Mechanical Specifications

Items Specifications

Physical Dimension of
MCPA

Front panel: 342.5mm(W) x 99mm(H) x 3mm(D)

Body: 288.8mm(W) x 95.3mm(H) x 446mm(D)
Weight Approximately 28.6 pounds (13 killograms)
Connector Type D-sub, Hybrid, Plug-in Type RF connector: PKZ 26-0020 series

straight plug type (Phoenix Co.) refers to attached drawing.
MCPA Front Panel Switch CKT Breaker. +27 Vdc Power Indicator
Connector

Description

Pin Outs

A1 RF Output (Coaxial Contact)
A2 Ground (Power Contact)
A3 +27 Vdc (Power Contact)
A4 RF Input (Coaxial Contact)

1 TX H 10 +27 V
2TX L 11COM SV
3 GND 12 AMP AO
4RX H 13AMP A1
5RX L 14AMP A2
6 GND 15 AMP A3
7 HERE LPA 16 NC
8 FF LPA 17 NC

9 RESERVED
Markings TBD
Front Panel LED Display LED type: SMD
RUN GREEN (When MCPA is enabled)
ALM
DC

Red (When any alarm occurred, LED is on)
Green (When DC Power is ON, LED is on)

MCPA Captive fastener TBD
Front Panel color & silk TBD

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