869-894 MHz
Installation & Service Manual
G3S-800-140
Multi-Carrier Amplifier System
869 – 894 MHz
044-05095 Rev. A February 2001
G3S-800-140 Installation & Service 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.
February 2001
Powerwave Technologies, Inc. Tel: (714) 466-1000
1801 E. St. Andrew Place Fax: (714) 466-5800
Santa Ana, CA 92705 Web Site: www.powerwave.com
044-05095 Rev. A ii
G3S-800-140 Installation & Service 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.......................................................................1-1
1-4 Equipment Changes...........................................................................................................1-1
1-5 Ordering Information.........................................................................................................1-2
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 Connectors.........................................................................................2-2
2-5.1 Amplifier Module Status, Alarm, Control, and Power Connector............................2-3
2-5.2 Amplifier Module RF Connector......................................................................................2-4
Section 3
Operating Instructions
3-1 Introduction.........................................................................................................................3-1
3-2 Location and Function of Amplifier Module Controls and Indicators.....................3-1
3-3 Initial Start-Up and Operating Procedures...................................................................3-4
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 G3S-800-140 Amplifier Module........................................................................................4-1
4-4.1 Main Amplifier....................................................................................................................4-2
4-4.2 Error Amplifier....................................................................................................................4-2
4-4.3 Amplifier Monitoring.........................................................................................................4-2
4-4.4 Amplifier Module Cooling................................................................................................4-3
4-4.5 Power Distribution ............................................................................................................4-3
4-4.6 Intermodulation.................................................................................................................. 4-3
4-4.7 Two Tone Intermodulation...............................................................................................4-3
4-4.8 Multitone Intermodulation...............................................................................................4-3
4-4.9 Alarms..................................................................................................................................4-3
044-05095 Rev. A i February 2001
G3S-800-140 Installation & Service Manual
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 Clean Air Inlets/Outlets....................................................................................................5-2
5-5 Performance Test...............................................................................................................5-2
5-5.1 Amplifier System Performance Test..............................................................................5-2
5-5.2 Amplifier IMD Test..............................................................................................................5.3
5-5.3 Gain Test..............................................................................................................................5-3
5-5.4 Harmonic Test.....................................................................................................................5-3
5-5.5 Spurious Emissions Test ..................................................................................................5-4
5-5.6 Input Return Loss................................................................................................................5-4
5-6 Field Replacement Parts and Modules.........................................................................5-6
5-6.1 G3S-800-140 Power Amplifier Module...........................................................................5-6
5-6.2 Cooling Fans........................................................................................................................5-6
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 Illustrations
Figure
No.
1-1 G3S-800-140 Front and Side View................................................................................... 1-3
2-1 G3S-800-140 Rear View.....................................................................................................2-2
2-2 DC and Logic Connector...................................................................................................2-3
2-3 Amplifier RF Connector.....................................................................................................2-4
3-1 G3S-800-140 Amplifier Module RF Control Indicators................................................3-1
4-1 G3S-800-140 Power Amplifier Module Functional Block Diagram..........................4-2
5-1 Amplifier System Test Setup Diagram...........................................................................5-3
044-05095 Rev. A ii February 2001
G3S-800-140 Installation & Service Manual
List Of Tables
Table
No.
1-1 Major Amplifier Components..........................................................................................1-2
1-2 G3S-800-140 MCPA Functional Specifications............................................................1-2
2-1 Amplifier Module DC and Logic Connector Definition...............................................2-3
2-2 Amplifier RF Connector Definition .................................................................................2-4
3-1 Amplifier Module RF Control and Indicators Definition............................................3-2
3-2 Amplifier Module Alarm Indicators Definition............................................................ 3-3
5-1 Periodic Maintenance......................................................................................................5-1
5-2 Test Equipment Required.................................................................................................5-2
5-3 MCPA Test Data Sheet......................................................................................................5-5
6-1 Troubleshooting.................................................................................................................6-1
044-05095 Rev. A iii February 2001
G3S-800-140 Installation & Service Manual
Section 1 General Description
1-1 Introduction
This manual contains information and procedures for installation, operation, and maintenance of
Powerwave’s G3S-800-140 multicarrier cellular amplifier. 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 G3S-800-140 (see figure 1-1) is a linear, feed-forward power amplifier that operates in the 25
MHz frequency band from 869 MHz to 894 MHz. The amplifier can simultaneously transmit multiple frequencies, with better than -60 dBc third order intermodulation distortion (IMD). It is designed for use in an amplifier system that is modular in design, and is ideally suited for use in
AMPS/TDMA/CDMA/CDPD/W-CDMA base stations. The plug-in Model G3S-800-140 amplifier
modules can each provide 140 watts of power and function completely independently of each
other. The amplifier modules are designed for parallel operation to produce high peak power output and backup redundancy for remote applications. All solid-state, the system is designed to
provide trouble-free operation with minimum maintenance. The system's modular construction
and unique and highly effective LED-based operational status and fault indicators help minimize
downtime. The turn-on and turn-off sequences of voltages are fully automatic, as is overload
protection and recycling. Inadvertent operator damage from front panel manipulation is virtually
impossible.
The amplifier module has a status connector that allows the host system to monitor the amplifier
module performance. The front panel of each amplifier module has unit level status/fault indicators and an RF on/off/reset switch. Primary power for the amplifier is +27 Vdc. Cooling for each
plug-in amplifier module is provided by four fans, two mounted on the front and two on the rear of
the module. The fans draw outside air through the front of the module and exhaust hot air out
through the rear of the module.
1-3 Functional And Physical Specifications
Functional and physical specifications for the amplifier are listed in table 1-2.
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.
044-05095 Rev. A 1-1 February 2001
G3S-800-140 Installation & Service Manual
1-5 Ordering Information
Table 1-1 following gives the part numbers and descriptions to be used when ordering either an
entire amplifier or replacement fans.
Table 1-1 Major Amplifier Components
Model number Description
G3S-800-140 140 W 869-894 MHz
MCPA Module.
800-01075-003 Front fan assembly
800-00972-002 Rear fan assembly.
Table 1-2 G3S-800-140 Multicarrier Cellular Amplifier Functional Specifications
Frequency Range 869-894 MHz (25 MHz Bandwidth)
Total Maximum Input Power -6.0 dBm
Total Output Power 140 W typical (1 Module)
Intermodulation Distortion
and In-Band Spurious:
RF Gain at 880 MHz 58 dB
Gain Flatness:
Gain Variation Over Voltage:
Output Protection: Mismatch Protected
Input Port Return Loss: -16 dB (Min)
Second Harmonics: +5 dBm (Max)
Out of Band Spurious: Better than -60 dBc, +26 to +28 Vdc
Duty Cycle: Continuous
DC Input Power:
Operating Temperature: – 5°C to +50°C
Storage Temperature: -40 ºC. to +85 ºC.
Operating Humidity: 5 % - 95 % Relative Humidity (Noncondensing)
Storage Humidity: 5 % - 95 % Relative Humidity (Noncondensing)
RF Input / Output Connector BMA Coaxial Female, Radiall
Status / Alarm / Control / DC Input
Connectors:
Dimensions: 5.22” High, 17.00” Wide, 20.44” Deep (Including handles, rear
-60 dBc (Max) @ +26 to +28 Vdc @ 140 Watts
-60 dBc (Max) @ +24 to +26 Vdc @ 143 Watts
-60 dBc (Max) @ +21.7 to +24 Vdc @ 100 Watts
± 0.5 dB @ 27 Vdc ±1 Vdc
±0.5 dB from 26 to 28 Vdc
+27 Vdc ± 1 Vdc, 70 Amps Max @ 140 Watts
Operational +21.7 to 30 Vdc
21-Pin D-Subminiature Combo Connector
fans)
044-05095 Rev. A 1-2 February 2001
G3S-800-140 Installation & Service Manual
Figure 1-1 G3S-800-140
044-05095 Rev. A 1-3 February 2001
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