Booster Amplifier Subrack System Integration Manual
System Integration
Manual
044-05075 Rev. A
Booster Amplifier Subrack (BAS) System
869-894 MHz, 91 Watts Maximum
Booster Amplifier Subrack System Intergration Manual
®
© 2000 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.
November 2000
Powerwave Technologies, Inc. Tel: (949) 809-1100
2026 McGaw Avenue Fax: (949) 757-0941
Irvine, CA 92614 Web Site: www.powerwave.com
044-05078 Rev. A ii
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 MCR20830-1 Subrack Specifications.............................................................1-3
1-3.2 G3L-800 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
5-4.1.1Amplifier Spurious Emissions Test ................................................................5-2
5-4.1.2Gain Test......................................................................................................5-2
5-4.1.3Input 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 G3L-800 Series Ampl i fier.............................................................................1-13
1-8 G3L-800 Series Ampli fier – Rear, Top, Fr ont Views ....................................... 1-14
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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-800-60 Multi-Car rier Power Amplifi er Functional Block Diagr am ............4-2
5-1 G3L-800-60 Amplifie r 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-800-Series Ampif i er Electrical Specificat i on s ..........................................1-5
1-4 G3L-800-Series Ampli f i er Mechnaical Specification s.......................................1-6
1-7 G3L-800 Series Ampli fier Environm en t a l S pecifications .................................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 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
869 MHz to 894 MHz. The system integrates the model MCR20830-1Booster Amplifier Subrack
(BAS) with two 60 Watt (model G3L-800-60) MCPAs to deliver a composite RF output of up to
100 Watts, 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). Each 60W 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 MCR20830-1 Subrack Specifications
Table 1-2 MCR20830-1 Booster Amplifier Subrack System Specifications
Frequency 869 – 894 MHz
Gain
+20 dBm, ± 0.2 dBm
RF Input Power +31 dBm composite w/variable attenuator set
to 0dB attenuation.
+46 dBm composite w/variable attenuator set
to 15 dB attenuation.
RF Output Power:
60W modules 52.3 Watts (+47.18 dBm) 1 module
91.0 Watts (+49.59 dBm) 2 modules
Phase Variation
± 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 50 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 GL3-800 Series Amplifier Sprecifications
Table 1-5 G3L-800 Series Amplifier’s Electrical Specifications
Frequency Range 869-894 MHz
Channel Spacing 12.5 KHz
Output Power:
GL3-900-60 +47.8 dBm (60 Watts)
Input Power -10.0 dBm max.
RF Gain
GL3-900-60-001, -006
G3L-800-60-002, -004
G3L-800-60-003
+57.8 dB ±1.0 dB @ +27Vdc, 25 C
+62 dB ±1.0 dB @ +27Vdc, 25 C
+65 dB ±0.7 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 – 942 MHz)
+27 Vdc ±1V Nominal (±5%) 1Vpp ripple (100-120 Hz) max.
Current Consumption:
GL3-900-60
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-800 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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Table 1-7 Environmental Specifications for G3L-800 Series Amplifiers
Items Specifications
Operating Temperature 0 to + 50 C
Storage Temperature -40 to + 85 C
Relative Humidity 5 to 90% RH (non-condensing)
Operating Air Pressure 860 to 1060 mbar
Shock 40 m/s s* @ 22 ms half sinusoid shock
Pressure Integral forced air cooling must operate correctly at
up to 0.3 inches back.
Vibration
Bellcore TR-NWT-000063 (1 m/s*s0.1∼200Hz)
Corrosion Resistance/ Salt Fog The MCPAs shall comply with the requirements of
Bellcore Technical Reference TA-NWT-000487, Issue 2, Section 4.12
Altitude All specifications shall be met at an altitude up to
15,000 feet where the maximum external ambient
temperature is decreased by 0.5 C/ 1000 feet above
sea level. The MCPAs shall not sustain damage
when being transported at altitude up to 40,000 feet
or uniformly applied pressure to 30 PSIA.
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1-4 Booster Amplifier Subrack (BAS) System Major Components
Table 1-8 lists the model numbers and descriptions of the major components that comprise the
BAS system and the document number (if available) of the manual related to each component.
Table 1-8 Major BAS System Components
Model/PN Description
800-01292-001
800-01294-001 Front Panel Assy 1 1
700-00901-001 Cable Assy, Power In 1 1
700-00902-001 Cable Assy, Amp Power 1 1
700-00903-001 Cable Assy, Amp Power 1 1
700-00904-001 Cable Assy, Fan 2 2
700-00905-001 Cable Assy, Amplifier 1 1
800-001296-001 Fan Assy 2 2
800-01297-001 Tray Assy 1 1
500-01425-001 PCB Assy, Power Distribution 1 1
MCR20830-1 Booster Amplifier Subrack 1 1
GL3-900-60-005 60-Watt Amplifier 2 2
Top Assembly, BAS II w/o
Combiner Backplane
Qty Per
System
11
Expandable
To
1-5 Equipment Changes
Powerwave Technologies, Inc. reserves the right to make minor changes to the equipment, including but not limited to component substitution and circuitry changes. Changes that impact this
manual may be incorporated in a later revision of the manual.
044-05078 Rev. A 1-8 November 2000
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