Powerwave Technologies 5JS0071 Multi Carrier RF Power Amplifier User Manual
Powerwave Technologies Inc Multi Carrier RF Power Amplifier Users Manual
Users Manual
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| Date Submitted | 2005-01-07 00:00:00 |
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| Document Title | Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier |
| Document Creator | Acrobat PDFMaker 6.0 for Word |
| Document Author: | Bruce Peters |
G3L-850-135 Multi-Carrier
Power Amplifier
Service and Installation
Manual
044-05117
December 2004
044-05117
© 2004 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.
This Powerwave product is designed to operate within the Normal Operating (typical operating)
ranges or conditions specified in this document. Operation of this equipment beyond the specified
ranges in this document may cause (1) spurious emissions that
violate regulatory requirements; (2) the equipment to be automatically removed from service
when maximum thresholds are exceeded; or (3) the equipment to not perform in accordance with
its specifications. It is the Operator's responsibility to ensure this equipment is properly installed
and operated within Powerwave operating specifications to obtain proper performance from the
equipment and to comply with regulatory requirements.
ii
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
044-05117
Warnings, Cautions, and Notes
Warnings, cautions, and notes are found throughout this manual. The associated icons in warnings
and cautions are used to quickly identify a potential condition that could result in the consequences
described below if precautions are not taken. Notes clarify and provide additional information to
assist the user.
This warning symbol means danger. You are in a situation that could cause
WARNING bodily injury. Before you work on any equipment, be aware of the hazards
involved with electrical and RF circuitry and be familiar with standard practices
for preventing accidents.
CAUTIO This caution symbol means reader, be careful. In this situation, the user might do
something that could result in equipment damage or loss of data.
This note symbol means reader, take note. Notes contain helpful suggestions or
Note references to material not covered in the document. Procedures are not contained in
notes.
044-05117
Revision Record
Revision Record
ii
Revision Letter
Date of Entry
Reason for Change
December, 2004
Original version of product
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
044-05117
Table of Contents
Chapter No.
Chapter 1
1-1
1-2
1-3
1-4
1-5
1-5.1
1-5.1.1
1-5.1.2
1-5.1.3
Installation
2-1
Operating Instructions
3-1
Introduction................................................................................................................... 3-1
Controls and Indicators ................................................................................................ 3-1
RESET Switch .............................................................................................................. 3-1
LED Status Indicator and RESET/On/Off Toggle Switch............................................. 3-1
RJ-11 PC Interface ....................................................................................................... 3-2
Initial Start-Up and Operating Procedures ................................................................... 3-2
Chapter 4
4-1
4-2
4-3
4-4
4-4.1
4-4.2
4-4.3
4-4.4
4-4.5
4-5
4-6
4-7
1-1
Introduction................................................................................................................... 2-1
Site Survey ................................................................................................................... 2-1
Electrical Service Recommendations........................................................................... 2-1
Air Conditioning ............................................................................................................ 2-2
Unpacking and Inspection ............................................................................................ 2-3
Installation Instructions................................................................................................. 2-4
Installing the Amplifier into the Subrack ....................................................................... 2-4
Amplifier Module Power, Alarm, Control, and RF Connector....................................... 2-5
Chapter 3
3-1
3-2
3-2.1
3-2.2
3-2.3
3-3
General Description
Page
Introduction................................................................................................................... 1-1
General Description...................................................................................................... 1-1
Functional and Physical Specifications ........................................................................ 1-2
Ordering Information .................................................................................................... 1-5
General Safety.............................................................................................................. 1-6
Lifting Standards........................................................................................................... 1-6
Power Plant .................................................................................................................. 1-6
Electronic Modules ....................................................................................................... 1-6
Electrostatic Discharge................................................................................................. 1-6
Chapter 2
2-1
2-2
2-3
2-4
2-5
2-6
2-6.1
2-6.2
Title
Principles of Operation
4-1
Introduction................................................................................................................... 4-1
RF Input Signal............................................................................................................. 4-1
RF Output Load ............................................................................................................ 4-1
Functional Description.................................................................................................. 4-1
Preamplifier .................................................................................................................. 4-2
Main and Error Amplifiers............................................................................................. 4-2
Alarm Monitoring and Control....................................................................................... 4-2
First and Second Loop Control Circuits ....................................................................... 4-3
Pilot Tone Generator .................................................................................................... 4-3
Amplifier Module Cooling ............................................................................................. 4-3
Power Distribution ........................................................................................................ 4-3
Amplifier Alarms ........................................................................................................... 4-4
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
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Chapter 5
5-1
5-2
5-3
5-4
5-4.1
5-4.2
5-4.3
5-4.4
5-5
5-5.1
5-5.2
Maintenance
5-1
Introduction................................................................................................................... 5-1
Periodic Maintenance................................................................................................... 5-1
Test Equipment Required For Test .............................................................................. 5-1
Amplifier Performance Test.......................................................................................... 5-2
Amplifier Spurious Emissions Test:.............................................................................. 5-2
Gain Test:..................................................................................................................... 5-3
Input Return Loss: ........................................................................................................ 5-4
Test Data Sheet ........................................................................................................... 5-5
Return For Service Procedures.................................................................................... 5-6
Obtaining An RMA........................................................................................................ 5-6
Repackaging For Shipment.......................................................................................... 5-6
Appendix A
Abbreviations and Acronyms
Appendix 2
General Site Survey Form
List of Figures
Figure No.
Figure Title
Page
Figure 1-1. Model G3L-850-135 Amplifier Front Isometric View.................................................. 1-3
Figure 1-2. Model G3L-850-135 Amplifier Rear Isometric View .................................................. 1-3
Figure 1-3. Model G3L-850-135 Amplifier Side View................................................................... 1-4
Figure 1-4. Model G3L-850-135 Amplifier Bottom View............................................................... 1-4
Figure 1-5. Model G3L-850-135 Amplifier Front Panel ................................................................ 1-5
Figure 2-1. Power Switch Functions and Unlocking/Locking Thumbscrews ............................... 2-5
Figure 2-2. DC and Logic Connector (Male, on Rear of G3L-850-135 Amplifier Module)........... 2-5
Figure 3-1. G3L-850-135 Controls and Indicators........................................................................ 3-1
Figure 4-1. Functional Block Diagram .......................................................................................... 4-2
Figure 5-1. Amplifier Test Setup Diagram – Configuration A ....................................................... 5-3
Figure 5-2. Amplifier Test Setup – Configuration B..................................................................... 5-4
iv
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
044-05117
List of Tables
Table No.
Table Title
Page
Table 1-1. General Operating Parameters ................................................................................... 1-1
Table 1-2. G3L-850-135 Amplifier Specifications......................................................................... 1-2
Table 1-3. Major System Components ........................................................................................ 1-5
Table 2-1. Sample of DC Cable Ratings ...................................................................................... 2-1
Table 2-2. 4-Way Combining Averaged DC Current Load........................................................... 2-2
Table 2-3. 4-In/4-Out Non-combining Averaged DC Current Load .............................................. 2-2
Table 2-4. 4-Way Combining Averaged Heat Loading................................................................. 2-3
Table 2-5. 4-In/4-Out Non-combining Averaged Heat Loading.................................................... 2-3
Table 2-6. G3L-850-135 Amplifier Combo Connector Specifications .......................................... 2-6
Table 3-1. Status Indicator Colors and Status.............................................................................. 3-2
Table 4-1. G3L-850-135 Alarm States.......................................................................................... 4-4
Table 5-1. Periodic Maintenance.................................................................................................. 5-1
Table 5-2. Test Equipment Required............................................................................................ 5-2
Table 5-3. Amplifier Performance Data ........................................................................................ 5-5
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
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This Page Intentionally Blank
vi
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Chapter 1
1-1
General Description
Introduction
This manual contains information and procedures for installation and servicing of Powerwave’s G3L-850-135
Amplifier. The manual is organized into two chapters as follows:
Chapter 1
General Description
Chapter 4
Principles of Operation
Chapter 2
Installation
Chapter 5
Maintenance
Chapter 3
Operating Instruction
Appendix A
Glossary of Terms
1-2
General Description
The G3L-850-135 Power Amplifier, shown in Figure 1-1 - Figure 1-5, operates in the 25 MHz frequency band
from 869 MHz to 894 MHz with an instantaneous bandwidth of less than 25 MHz. The instantaneous
bandwidth is the maximum frequency band in which any two or more signals can occupy .The amplifier’s
instantaneous bandwidth is set automatically and does not require any manual setup. The amplifier is
modular in design. Table 1-1 gives additional essential operating specifications.
Table 1-1. General Operating Parameters
Characteristic
Performance
Remarks
Operating Frequency Band
869 MHz to 894 MHz
Instantaneous Bandwidth
25MHz
Gain
63 dB
Spurious Performance
ITU-R SM329-9, Category A
Non-carrier related
Receive Band Noise
-98 dBm/Hz
In RX channels associated with RF
input terminated into 50 Ω.
Supply Voltage
21 Vdc to 30 Vdc
Nominal +27 Vdc. Degraded mode of
operation at less than 26 Vdc.
Heat Output
3,074 BTU
At full rated power
GSM (up to 12 carriers) or
GSM 11.21
EDGE +GSM (up to 4 carriers for
each)
TS 25.141
Carrier Types
3GPP2 C.S0010-B
WCDMA (up to 4 carriers)
Storage Temperature
-40 - +85 °C
Ambient Temperature
-33 - + 50 °C
Altitude
-50 - +4,000 m
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
1-1
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1-3
Functional and Physical Specifications
Electrical, mechanical, and environmental specifications for the G3L-850-135 amplifier are listed in Table 1-2.
Table 1-2. G3L-850-135 Amplifier Specifications
Frequency Range
Minimum Channel Spacing
Total Maximum Input Power
Total Output Power
Intermodulation Distortion
and In-Band Spurious:
RF Gain at 869 to 894 MHz
Gain Flatness:
Gain Variation Over Temperature:
Output Protection:
Input Port Return Loss:
Out of Band Spurious:
Duty Cycle:
DC Input Power:
Operating Temperature:
Storage Temperature:
Operating Humidity:
Storage Humidity:
RF Input / Output / Status / Alarm /
Control / DC Input Connectors:
Maintenance Port
Switches
Indicators:
STATUS
Dimensions:
Weight:
Note
1-2
869-894 MHz; 25 MHz bandwidth (lowest to highest
transmitted frequency)
1 to 8 GSM carriers
-12.21 dBm @ 135 Watts (to achieve rated power);
-11.91 dBm max. -6.0 dBm or greater causes input
overdrive shutdown.
135 Watts (7GSM and 1EDGE) @27Vdc
120 Watts (GSM/EDGE) @26Vdc to 30Vdc
110 Watts (W-CDMA) @26Vdc to 30Vdc
-65 dBc (Min) @ +26 to +28 Vdc @ 135 Watts; 600 KHz
channel spacing within 25 MHz bandwidth*
63 dB ±1 dB
±0.5 dB @ 27 Vdc ±1 Vdc
±0.5 dB from 26 Vdc to 28 Vdc over -20° to +50° C
Mismatch protected
Equal to or greater than 14dB
Better than -60 dBc, +26 Vdc to +28 Vdc
Continuous
+27 Vdc ± 1 Vdc, 34.1 Amps typical, 36 Amps max @ 135
Watts; operational range +21.0 Vdc to 30 Vdc amplifier will
disable at < 20.5 Vdc or > +30.5 Vdc.
-33 ºC. to +50 ºC.
-40 ºC. to +85 ºC.
5 % to 95 % relative humidity (non-condensing)
5 % to 95 % relative humidity (non-condensing)
21-Pin D-Subminiature combo connector
RJ-11, RS-232 signaling (for factory use only)
Reset/On/Off Switch
LED; Green (normal), Yellow (minor alarm), Red (critical
alarm)
35.46 cm wide, 9.56 cm high, 45.0 cm deep (including
handles)
12.97 kg
This Powerwave product is designed to operate within the normal operating (typical operating)
ranges or conditions specified in this document. Operation of this equipment beyond the
specified ranges may cause (1) spurious emissions that violate regulatory requirements; (2)
the equipment to be automatically removed from service when maximum thresholds are
exceeded; or (3) the equipment to not perform in accordance with its specifications. It is the
operator's responsibility to ensure this equipment is properly installed and operated within
Powerwave operating specifications to obtain proper performance from the equipment and
to comply with regulatory requirements.
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
044-05117
Figure 1-1. Model G3L-850-135 Amplifier Front Isometric View
Figure 1-2. Model G3L-850-135 Amplifier Rear Isometric View
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
1-3
044-05117
Figure 1-3. Model G3L-850-135 Amplifier Side View
Figure 1-4. Model G3L-850-135 Amplifier Bottom View
1-4
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
044-05117
Figure 1-5. Model G3L-850-135 Amplifier Front Panel
1-4
Ordering Information
Table 1-3 lists major system component numbers and descriptions for use in ordering amplifiers or
components.
Table 1-3. Major System Components
Model Number
Description
G3L-850-135
135-Watt Amplifier, +27 Vdc
*MCR41927-1-4
4-way Combining Amplifier Subrack
*MCR41928-4-4
4-In/4-Out Non-combining Amplifier Subrack
*MCR41970-4-4
4-In/4-Out N+1 Non-combining Amplifier Subrack
*Amplifier subracks sold and described separately
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
1-5
044-05117
1-5
General Safety
This paragraph describes safety practices when handling certain components.
1-5.1
Lifting Standards
The handling of the power amplifier cabinet and its subassemblies involves heavy lifting. Various methods of
lifting must be employed to safely and properly install this equipment. The following web site addresses are
provided as references to OSHA personnel lifting guidelines:
http://www.osha.gov/SLTC/etools/electricalcontractors/materials/heavy.html
http://www.cdc.gov/niosh/pdfs/94-110.pdf
Lifting of heavier modules may require two people in awkward work environments, whereas only one person
might otherwise be able to safely lift the module. Be aware of the environmental impact on lifting and twisting
while moving heavier materials.
The Amplifier weighs 12.97 kg (28.5 lb) and can normally be lifted by one person.
1-5.1.1
Power Plant
Only qualified electricians, certified to work on high voltages (176 to 264 Vac; 150 A), should perform
installation and maintenance to the cabinet and rectifier inputs. Failure to follow safe practices may result in
equipment damage, personal injury or death.
Never remove bare DC power wires from equipment or allow bare DC voltage wires to dangle freely in the
cabinet. Prior to removal of equipment that necessitates dangling of DC wires, disconnect DC power at the
LVD and turn the rectifiers off. Verify with a voltmeter that DC power is removed prior to disconnecting
equipment.
Refer to NEC Article 810, for clearances from power and lightning conductors, mounting, and grounding.
1-5.1.2
Electronic Modules
Electronic modules should be turned off before removal, when an on/off switch is provided. For example, the
amplifier module draws up to 26 amperes of current with no RF energy applied. Failure to turn the amplifier
module off before removal will cause arching between the amplifier module and the amplifier subrack,
resulting in damage to both pieces of equipment.
RF energy should be turned off before removal or installation of RF cables. Failure to RF energy may result in
equipment damage or personal injury.
Electronic modules should be turned off before removal or installation of electronic interconnecting cables.
1-5.1.3
Electrostatic Discharge
The power amplifier cabinet contains modules and components that are sensitive to static electricity. Two
Electrostatic Discharge (ESD) service points are incorporated in the cabinet frame. One service point is
located in the interior front electronics compartment about half way down the right hand vertical rail. The other
service point is located in the interior rear electronics compartment about half way down the left hand vertical
rail.
ESD protective devices must be properly worn and connected to one of the cabinet ESD service points by
technicians and installers during the performance of maintenance activities.
1-6
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
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Chapter 2
2-1
Installation
Introduction
This chapter contains unpacking, inspection, and installation instructions for the G3L-850-135
Multi-Carrier Power Amplifier (MCPA). It is important that the licensee perform the following tasks
correctly. Carefully read all material in this chapter prior to equipment unpacking or installation.
Also, read and review the operating procedures in chapter 3 prior to installing the equipment. If
applicable, carefully review the government and local codes as they apply to your installation.
2-2
Site Survey
Powerwave Technologies recommends that site surveys be performed by qualified individuals or
firms prior to equipment ordering or installation. Performing a detailed site survey reduces or
eliminates installation and turn-up delays caused by oversights. Pay particular attention to power
plant capacity, air conditioning needs, and RF/DC cabling/breaker requirements.
2-3
Electrical Service Recommendations
Powerwave Technologies recommends that proper AC line conditioning and surge suppression
be provided on the primary AC input to the +27 Vdc power source. Install all electrical service in
accordance with applicable local codes and good engineering practice. Give special
consideration to lightning protection of all systems, given the vulnerability of most transmitter sites
to lightning. Lightning arrestors are recommended in the service entrance. Straight, short ground
runs are recommended. The electrical service must be well grounded.
The information in Table 2-1 is provided as a guideline. Follow the appropriate standards in the
National Electrical Code (NEC) and codes for your area, and observe the cable manufacturer’s
recommendations for proper cable selection.
Table 2-1. Sample of DC Cable Ratings
Copper
mm
3 Cond. In Raceway
Aluminum
Single Conductor In Free Air
3 Cond. In Raceway
90°C
110°C
Single Conductor In Free Air
90°C
110°C
90°C
110°C
125°C
200°C
90°C
110°C
125°C 200°C
25
30
30
40
40
45
--
--
--
--
--
--
30
35
40
50
50
55
25
25
30
40
40
45
40
45
55
65
70
75
30
35
45
50
55
60
55
60
75
85
90
100
40
45
55
65
70
80
13
70
80
100
120
125
135
55
60
80
95
100
105
21
95
105
135
160
170
180
75
80
105
125
135
140
34
125
135
185
210
225
240
100
105
140
165
175
185
42
145
160
215
245
265
280
110
125
165
190
205
220
53
165
190
250
285
305
325
130
150
190
220
240
255
Based on ambient temperature of 30°C (86°F)
100% Load Factor
Source: Industrial Electric Wire & Cable Inc., Technical Guide Vol. 4M 11/99, Table III Suggested Ampacities - All Types
of Insulations; Based on National Electric Code
Each amplifier system should have its own circuit breaker, so a failure in one does not shut off
the whole installation. Circuit breakers should be capable of handling the anticipated inrush
current, in a load center with a master switch. Powerwave recommends that a 50 A circuit
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
2-1
044-05117
breaker be installed in the power distribution unit for each amplifier. DC wire smaller than 8 mm2
90°C copper should not be installed. Each amplifier should have its own DC cable pair. Refer to
Table 2-1.
According to the laws of probability used to formulate Erlang tables, rarely are all channels
transmitting at the same time. We can use Erlang tables to predict typical maximum current
usage. Table 2-2 and Table 2-3 describe the current load (at 120 Watts typical) for a 3 sector
(70%), 2 sector (80%) and omni (90%) site in two different configurations. Based on table 2-2, a
600-ampere power plant may suffice in a macro-cell site, whereas, a 200-ampere or smaller
power plant may be adequate in a micro-cell site, based on the equipment configuration.
Battery backup or UPS systems should be installed in remote sites or in sites that experience
brownout conditions or generator switchovers. Adding this equipment should eliminate the need
for site visits by technicians after brownouts or power outages. Battery backup systems also
provide excellent DC filtering as a side benefit.
Table 2-2. 4-Way Combining Averaged DC Current Load
Amplifier
Power
No. Of
3-Sector (70%)
2-Sector (80%)
1-Sector (90%)
Amplifiers Averaged Current Averaged Current Averaged Current
120
12
*348 A
120
*232 A
120
*116 A
120
*29 A
* typical, based on given % of output power)
*254 A
*127 A
*32 A
*130 A
*33 A
100%
Typical
409 A
273 A
136 A
34 A
Table 2-3. 4-In/4-Out Non-combining Averaged DC Current Load
Amplifier
Power
No. Of
3-Sector (70%)
2-Sector (80%)
1-Sector (90%)
Amplifiers Averaged Current Averaged Current Averaged Current
120
*99 A
120
*87 A
120
*58 A
120
*29 A
* typical, based on given % of output power)
2-4
*95 A
*63 A
*32 A
*65 A
*33 A
100%
Typical
*114 A
*102 A
*68 A
*34 A
Air Conditioning
Each G3L-850-135 amplifier generates 3,074 BTUs of heat at full 135-Watt power. A 1-ton air
conditioner offsets 12,000 BTU’s of heat. The G3L-850-135 amplifier is designed to operate
within the extended low temperature and high temperature environments defined in table 1-2.
In keeping with Paragraph 2-3, Table 2-4 and Table 2-5 describe the heat load (at 120 Watts
typical) for a 3-sector (70%), 2-sector (80%), omni (90%), and typical (100%) site. Perform a site
survey to determine actual air conditioning needs.
2-2
Installation and Service Manual - G3L-850-135 Multi-Carrier Power Amplifier
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Table 2-4. 4-Way Combining Averaged Heat Loading
Amplifier
Power
120
120
120
120
No. Of
Amplifiers
3-Sector (70%)
Averaged
BTU/hour
2-Sector (80%)
Averaged
BTU/hour
28,791
19,194
9,597
2,399
20,638
10,319
2,580
12
1-Sector (90%)
Averaged
BTU/hour
100%
Typical
BTU/Hour
32,793
21,862
10,931
2,733
10,514
2,629
* typical, based on given % of output power
Table 2-5. 4-In/4-Out Non-combining Averaged Heat Loading
Amplifier
Power
120
120
120
120
No. Of
Amplifiers
3-Sector (70%)
Averaged
BTU/hour
2-Sector (80%)
Averaged
BTU/hour
9,585
7,198
4,799
2,399
7,739
5,160
2,580
1-Sector (90%)
Averaged
BTU/hour
100%
Typical
BTU/Hour
5,257
2,629
10,585
8,198
5,465
2,733
* typical, based on given % of output power
2-5
Unpacking and Inspection
This equipment has been operated, tested, and calibrated at the factory. Only in the event of
severe shocks or other mistreatment should any substantial readjustment be required. Carefully
unpack each piece of equipment after it has reached the installation site and is approximately in
place. Carefully open the several amplifier system containers and remove the contents. Inventory
all items to ensure all needed materials have been delivered.
Retain all packing material to support any claim of shipping damage or for use in the event that
the equipment must be returned to the factory.
Exercise care in handling equipment during inspection to prevent damage
CAUTION caused by rough or careless handling. Some components are heavy. Follow
the guidelines set forth in Paragraph 1-5.1 when lifting heavy components.
Visually inspect the Amplifier for damage that may have occurred during shipment. Check for
evidence of water damage, bent or warped chassis, loose screws or nuts, or extraneous packing
material in the connectors or fans. Inspect male connectors on modules and harnesses for bent
connector pins.
Perform the following steps:
1. Visually inspect the MCPA for damage that may have occurred during shipment.
2. Check for evidence of water damage, bent or warped chassis, loose screws or nuts, or
extraneous packing material in the connector(s).
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CAUTION
Before applying power, make sure that all connectors are secure. Make sure
that the input and output are properly terminated at 50 ohms. Do not operate
the system without a load attached. Refer to Table 1-2 for input power
requirements. Excessive input power may damage the equipment.
If the equipment is damaged:
• The carrier is your first area of recourse.
• A claim should be filed with the carrier once the extent of any damage is assessed. We
cannot stress too strongly the importance of IMMEDIATE careful inspection of the
equipment and the subsequent IMMEDIATE filing of the necessary claims against the
carrier, if necessary.
If the equipment is damaged and must be returned to the factory:
• Please write or phone for return authorization.
• Powerwave may not accept returns without a return authorization.
2-6
Installation Instructions
Install the G3L-850-135 amplifier as follows:
WARNING Turn off external primary DC power before connecting DC power
cables.
2-6.1
Installing the Amplifier into the Subrack
1. For each Amplifier:
a. Inspect the 21WA4 male combo connector on the rear of each amplifier. Verify that all
pins are straight, no pins are recessed, packing material is removed, and that the
alignment shield is not bent.
b. Set the amplifier power Reset/On/Off switch to “Off” (down position) as shown in Figure
2-1.
CAUTION
Note
Do not slam or force the amplifier into the subrack. This may cause the pins
on the 21-D sub connector of the amplifier to become recessed or broken.
Non-combining subracks are typically sector specific; ensure the amplifier is installed
to support the appropriate sector.
c. With the thumbscrews in the unlock position, install the amplifier(s) into the subrack.
There are no slot priorities in a combining subrack, so all slots function equally. To
secure the amplifier(s) in the subrack, turn the top and bottom thumbscrews to the lock
position as shown in Figure 2-1.
WARNING Check your work before applying DC voltage to the amplifier. Make certain all
connections are tight and correct.
2-4
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2. Measure primary DC input voltage. DC input voltage should be +27 Vdc ±1.0 Vdc. If the DC
input voltage is above or below the limits, call and consult an electrician before you turn on
your amplifier system.
Refer to Chapter 3 for initial turn-on and checkout procedures.
Unlock
Position
Lock
Position
3-Position Switch:
Reset (Up)
On (Middle)
Off (Down)
Figure 2-1. Power Switch Functions and Unlocking/Locking Thumbscrews
2-6.2
Amplifier Module Power, Alarm, Control, and RF Connector
The power, alarm, control, and RF connections on the amplifier are made through a 21WA4 male
connector, located on the rear of the amplifier. Pins are listed and described in Table 2-6. Alarms
are interpreted by the amplifier subrack and reported to the base station as a system level alarm.
A1
2 3 4 5
6 7 8 9
A3
A2
A4
10 11 12 13 14 15 16 17
Figure 2-2. DC and Logic Connector (Male, on Rear of G3L-850-135 Amplifier Module)
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Table 2-6. G3L-850-135 Amplifier Combo Connector Specifications
21WA4 Connector
Description
2-6
Pins/Signal Names
A1
RF Input (Coaxial Contact)
A2
+27 Vdc (Power Contact)
A3
Ground (Power Contact)
A4
RF Output (Coaxial Contact)
TX H (RS-485)
10
System Reset TTL
TX L (RS-485)
11
NC
GND
12
NC
RX H (RS-485)
13
AMP AO
RX L (RS-485)
14
AMP A1
GND
15
AMP A2
MOD_DET
16
NC
Summary Fault
17
MCPA Temp
DC (On/Off)
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Chapter 3
3-1
Operating Instructions
Introduction
This chapter contains a description of the G3L-850-135 Multi-Carrier Power Amplifier (MCPA)
controls, indicators, and initial start-up and operating procedures.
3-2
Controls and Indicators
The controls and indicators for the G3L-850-135 Power Amplifier consist of the primary power
RESET toggle switch, the LED STATUS indicator, and the RJ-11 PC Interface as shown in
Figure 3-1.
3-2.1
RESET Switch
The RESET Switch, located on the front panel, has three positions, each with its own function.
• The momentary up position resets fault indications and returns the Amplifier to normal
operation if a critical or hard fault does not prevent such operation. When the switch is
released, it automatically returns to the middle position.
• The middle position allows normal operation. If no critical faults are present, the Amplifier
operates normally.
• The down position is used to turn the amplifier off. The Amplifier remains disabled until the
switch is manually returned to the middle position.
RJ-11 PC
Interface
Reset/On/Off
Toggle Switch
Multi-Colored LED
Status Indicator
Figure 3-1. G3L-850-135 Controls and Indicators
3-2.2
LED Status Indicator and RESET/On/Off Toggle Switch
The status indicator, located on the front panel, is a single, tri-color LED. Status is indicated by a
combination of color and intermittent/steady operation. The LED has tri-color capability: red,
yellow, and green. The LED’s blinking frequency is 0.5-1 Hz with a duty cycle of 45-55%. The
LED indicates the status of the MCPA as listed in Table 3-1.
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Table 3-1. Status Indicator Colors and Status
Control/Indicator
STATUS (Multicolored LED
Indicator)
Description
LED Color
MCPA Status
Green (solid)
RF enabled, Reset/On/Off switch set to
On (middle position).
Green (blinking)
Standby.
Yellow (solid)
Minor* alarm - APC function enabled.
Red (solid)
Major* alarm – Critical fault present. If
present on only one amplifier, amplifier
replacement required. If present on all
amplifiers in a subrack, a fault exists in
the subrack or in the RF load attached
to the subrack.
Red/Yellow
(alternating)
Downloading. Do not interrupt power.
Toggle Switch
positions
RESET (Up)
Amplifier in RESET mode. LED indicates Boot mode, then turns
solid green.
On (Middle)
Amplifier enabled. LED indicates solid green
Off (Down)
Amplifier disabled. LED Indicates solid red.
* See Table 4-1 for an explanation of major and minor alarms.
3-2.3
RJ-11 PC Interface
The RJ-11 PC Interface connector, located on the Front Panel, is for updating the amplifier’s
firmware, and is for factory use only.
3-3
Initial Start-Up and Operating Procedures
To perform the initial start-up, proceed as follows:
1. For each Amplifier:
a. Verify that all input and output cables are properly connected.
Caution
Before applying power, make sure that the input and output of the amplifier are
properly terminated at 50 ohms. Do not operate the amplifier without a load
attached. Refer to table 1-2 for input power requirements. Excessive input
power may damage the MCPA.
Note The amplifiers must be warmed up for a minimum of 5 minutes prior to setting power
levels. Failure to properly warm the amplifiers may result in lower output power,
once the amplifiers reach operating temperature.
b. Turn on the supply that provides +27 Vdc to the amplifier.
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c. Place the power 3-position (Reset/On/Off) switch on the amplifier front panel to the On
(middle) position.
2. Allow the amplifiers to warm up for at least 5 minutes before taking power readings.
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3-4
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Chapter 4
4-1
Principles of Operation
Introduction
This chapter contains a functional description of the G3L-850-135 Multi-Carrier Power Amplifier
(MCPA).
4-2
RF Input Signal
The maximum input power for all carrier frequencies to the amplifier should not exceed the limits
specified in Table 1-2
4-3
RF Output Load
For good power transfer to the RF load, the load impedance should be as closely matched to the
output impedance of the amplifier as possible. A VSWR of less than 1.5:1 across the working
band of frequencies is satisfactory. If the amplifier is operated into a filter, it maintains its
distortion characteristics outside the signal band even if the VSWR is infinite. A parasitic signal of
less than one-watt incident on the output will not cause distortion at a higher level than the
normal forward distortion (i.e. -65 dBc).
4-4
Functional Description
The Multi-Carrier Power Amplifier (MCPA) is a linear, feedforward amplifier that operates in the
frequency band from 869 MHz to 894 MHz with an instantaneous bandwidth of less than 25 MHz
(refer to Table 1-2 for amplifier specifications). The instantaneous bandwidth is the maximum
frequency band that a set of two or more signals can occupy .The amplifier’s instantaneous
bandwidth is set automatically and does not require any manual setup. The amplifier provides a
gain of 63 dB. Typical outputs for different carrier types are specified in Table 1-2.
Each amplifier is a self-contained module and is functionally independent of any other MCPA in a
system. The amplifiers are designed for parallel operation to achieve a high peak power output.
Each MCPA has an alarm board that monitors the amplifier performance. If a failure or fault
occurs in an MCPA, it is transmitted to a subrack system via the D-sub 21WA4 connector located
at the rear of the module. The subrack reports all alarms to the host system.
Continuously comparing active paths with passive references, and correcting for small variations
through RF feedback controls maintain constant gain. All gain variations, for example those due
to temperature, are reduced to the passive reference variations.
Refer to Figure 4-1 for the amplifier functional block diagram. The amplifier consists of the
following major functional blocks:
• Preamplifier
• Main amplifier
• Error amplifier
• Alarm monitoring and control
• First and second loop control circuits
• Pilot tone generator
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Figure 4-1. Functional Block Diagram
4-4.1
Preamplifier
The RF carriers are applied to the input port of the amplifier, where they are fed to the
preamplifier stage. The preamplifier provides two stages of class-A mode-amplification. The
output of the preamplifier is then split into two paths, one to the main amplifier and one to the
error amplifier.
4-4.2
Main and Error Amplifiers
The main amplifier provides the balance of gain and power (refer to Table 1-1 for amplifier
specifications). The main amplifier employs class AB amplification for maximum efficiency. The
error amplifier and feed forward loops are used to correct signal distortion introduced by nonlinearity in the class AB main amplifier. The error amplifier operates in class A mode. The RF
signal from the preamp is coupled to an attenuator and phase shifter in the first feed-forward loop
where it is phase shifted by 180 degrees and amplified in the pre-main amplifier. The output from
the pre-main amplifier is fed to the class AB main amplifier. The signal output from the main
amplifier is sampled using a coupler, and the sample signal is combined with the main input
signal and input to the second feed-forward loop.
The error signal is attenuated, phase shifted 180 degrees, then fed to the error amplifier where it
is amplified to a level identical to the sample output from the main amplifier. The output from the
error amplifier is then coupled back and added to the output from the main amplifier. The control
loops continuously make adjustments to cancel out any distortion in the final output signals.
4-4.3
Alarm Monitoring and Control
The alarm logic controls the +5 Vdc bias voltage that shuts down the amplifier. During routine
operation, all normal variations are automatically compensated for by the feed-forward loop
control. However, when large variations occur beyond the adjustment range of the loop control, a
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loop fault occurs. When this happens, an alarm indicator is illuminated on the front panel of the
subrack. The fault is transmitted back to an external summary module via the external alarm
interface connection on the front panel of the subrack.
4-4.4
First and Second Loop Control Circuits
The primary function of the first loop is to amplify the carrier signals and isolate an error signal for
the second loop. The primary function of the second loop is to amplify the error signal to cancel
out spurious products developed in the main amplifier. The input signal is amplified by a
preamplifier and fed to a coupler and delay line. The signal from the coupler is fed to the
attenuator and phase shifter in the first loop. The first loop control section phase shifts the main
input signals by 180 degrees and constantly monitors the output for correct phase and gain.
The second loop control section obtains a sample of the distortion added to the output signals by
the main amplifiers. The signal is phase shifted 180 degrees, then fed to the error amplifier where
it is amplified to the same power level as the input sample. The signal is then coupled to the error
signal of the main amplifier output. The final output is monitored by the second loop and adjusted
to ensure that the signal distortion and intermodulation distortion (IMD) on the final output is
cancelled out.
4-4.5
Pilot Tone Generator
A Pilot Tone is an internally generated signal, who’s precise frequency, phase, and amplitude is
known. The basic idea of injecting a pilot tone is that if the pilot signal is suppressed at the
amplifier output, then the distortion created by the main amplifier is also suppressed. To
accomplish this, the pilot tone signal is injected into the first loop and then detected at the
feedforward output of the second loop. The pilot tone is coupled off of the main amplifier, thus
creating a second pilot tone, attenuated and phase shifted 180 degrees to be used as the
reference. This second pilot tone is then amplified in the error amplifier and mixed with the
signals from the main signal path. Ideally, the two pilot tones, both amplified, should cancel each
other out. If they do not cancel each other out, as determined by an output detector, the
information is fed back to control the gain and phase of both the main and error amplifier paths
such that the output distortion is minimized.
4-5
Amplifier Module Cooling
The amplifier is cooled by forced air flowing over its heat sink, which is provided by external fans
mounted on the MCPA subrack. The fans are field replaceable. Each amplifier, when properly
cooled, maintains the amplifier within the specified operating temperature range. Six inches of
free space are required at both the front and rear panels of the subrack to allow adequate air
volume to circulate over the heat sinks.
4-6
Power Distribution
Primary DC power for the amplifier is provided by the host system. The amplifier module has a
DC/DC converter and voltage regulator that converts the +27 Vdc to +15 Vdc, +5 Vdc, and -5 Vdc
for internal use.
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4-7
Amplifier Alarms
Causes for MCPA alarms are given in Table 4-1. Conditions external to the amplifier should be
investigated before replacing the amplifier, particularly if more than one amplifier exhibits a critical
alarm. Alarm conditions are reported to the amplifier subrack via RS-485 or TTL interfaces. Other
than the front panel LEDs (described in chapter 3), there are no other visual aids for the
technician.
Table 4-1. G3L-850-135 Alarm States
Major Alarm - Causes MCPA RF section to be
disabled
Amplifier
Alarm
Output
Overpower
Automatic
Power
Control
(APC)
Input
Overdrive
Definition
Amplifier
Mode
Disable the MCPA
immediately if the output
Major
power is >2 dB over rated
power.
Enabled if the output
power is > 50 dBm
Note: If the MCPA cannot
compensate the gain to maintain
compliance, the Output
Overpower or Input Overdrive
Faults will protect the MCPA.
Disable the MCPA
immediately if the input
RF power is > -6.0 dBm
High
Sensor temperature is >
Temperature +88° C
Minor
Minor Alarm - Does not cause MCPA RF section
to be disabled
Auto-Recovery
Event/Fault Log
No auto recovery. Requires
Records output
manual reset. Output power
overpower event after
must be decreased to < 2
system disabled
dB over rated power.
Amplifier auto-recovers
when the output power
drops below the rated
maximum output power.
Records APC event and
auto-recovery event if
auto-recovery
successful
Major
No auto recovery. Requires
manual reset. Input power
must be decreased to < -6.6
dBm.
Records input overdrive
event, system disable
event, each auto
recovery event*
Major
Amplifier auto-recovers
when the sensor
temperature drops to < +73°
C.
Records over
temperature event,
system disable event,
each auto recovery
event,
(Yellow
LED
display)
Reflected
Power
Reverse RF output power
is > +47.8 dBm for a
Major
duration of 1-minute
No auto-recovery. Requires
manual reset. Reverse
Records high reflected
power must be < 50% of the power event, each auto
recovery event*
maximum rated forward
output power.
High
Voltage
Disable the MCPA
immediately if the supply
DC voltage > +30.5 Vdc
Major
Auto-recovery when the
supply voltage drops to <
+30.0 Vdc
Records supply DC fault
event, system disable
event, each auto
recovery event*
Low
Voltage
Disable the MCPA
immediately if the supply
DC voltage < +20.5 Vdc
Major
Auto-recovery when the
supply voltage increases to
> +24 Vdc
Records low voltage
event, system disable
event, each auto
recovery event*
4-4
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Major Alarm - Causes MCPA RF section to be
disabled
Amplifier
Alarm
Definition
Amplifier
Mode
Minor Alarm - Does not cause MCPA RF section
to be disabled
Auto-Recovery
Event/Fault Log
Loop converges. Tries to
auto recover 10 times
before permanent shut
down. 2 minutes and 5
seconds for each try.
Records internal DC
fault event, system
disable event, each
auto recovery event*
Records internal DC fail
event, system disable
event, each auto
recovery event*
Loop
Fail
Loop convergence fail
Internal
DC
Fail
Minor
Internal voltages fail or out
(no LED
of range
display)
Auto-recovery once the
voltage is within the range.
No shutdown until
Linearization alarm occurs.
Device
Fail
Minor
One or more output power
(no LED
devices fail
display)
No auto-recovery. No
Records device fault
shutdown until Linearization
event
alarm occurs.
Major
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4-6
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Chapter 5
5-1
Maintenance
Introduction
This chapter contains periodic maintenance and performance test procedures for the
G3L-850-135 Multi-Carrier Power Amplifier (MCPA).
Check your sales order and equipment warranty before attempting to service or
Note repair the unit. Do not break the seals on equipment under warranty or the warranty
will be null and void. Do not return equipment for warranty or repair service until
proper shipping instructions are received from the factory.
5-2
Periodic Maintenance
Periodic maintenance requirements and the intervals at which the tasks should be performed are
listed in Table 5-1.
Table 5-1. Periodic Maintenance
Task
Inspection:
Interval
Action
12 Months
Inspect signal and power cables for frayed insulation.
Check RF connectors to ensure that they are tight.
Performance Tests
12 Months
Perform annual test per paragraph 5-4.
Clean Fans/Heat Sinks
3 Months
Inspect for debris. Remove dust with a soft cloth/brush
or vacuum cleaner.
Cables and Connectors
5-3
Test Equipment Required For Test
Test equipment required to test the amplifier is listed in Table 5-2. Equivalent test equipment may
be substituted for any item, keeping in mind that a thermistor type power meter is required.
Note
All RF test equipment required must be calibrated to 0.05 dB resolutions. Any
deviation from the nominal attenuation must be accounted for and factored into all
output readings.
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Table 5-2. Test Equipment Required
Nomenclature
Manufactu
rer
Model
Signal Generator
Agilent
8656B
20 dB Attenuator, 250 Watt
Bird
20 dB Attenuator, 20 Watt (2 each)
Bird
Tenuline
Spectrum Analyzer
Agilent
8560E
Coax Directional Coupler
Agilent
778D
Power Meter / Sensor
Agilent
437B / 8481A
Arbitrary Waveform Generator
Sony
AWG2021
Network Analyzer
Agilent
8753C
* Any Equipment substitutions should have equivalent specifications.
5-4
Amplifier Performance Test
Performance testing should be conducted every 12 months to ensure that the amplifier system
meets the operational specifications listed in Table 5-3. Also verify system performance after any
amplifier module is replaced in the field.
The test equipment required to perform the testing is listed in Table 5-2, and the test setup is
shown in Table 5-1.
Note
The frequencies used in this test are typical for an amplifier with a 25 MHz band
from 869 MHz to 894 MHz. Select evenly spaced F1, F2, F3, and F4 frequencies
that cover the instantaneous bandwidth of your system.
To check amplifier performance, proceed as follows:
WARNING Do not apply any RF signals to the amplifier input until instructed to do
so.
Ensure that the correct amount of attenuation is used between the amplifier RF
CAUTIO connections and the test equipment to prevent overdrive of the amplifier or the
test equipment.
5-4.1
Amplifier Spurious Emissions Test:
1. Connect the test equipment as shown in Figure 5-1.
2. Configure the signal source to produce four frequencies evenly spaced across the
instantaneous bandwidth to be used for the amplifier under test.
3. Adjust the output of the signal source to excite the amplifier to its rated output.
4. Use the spectrum analyzer to measure the spurious emissions performance.
5. Record test data in Table 5-3. Verify that the data are within the specifications shown in
Table 1-2.
6. Reduce the output of the signal source to minimum.
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7. Switch off the Main Power Switch on the amplifier under test.
20 dB
Directional
Coupler
27 Vdc
Power
Meter
HP 437B
30 dB
Attn
RF Out
G3L-850-135 PYTHON MultiChannel Power Amplifier
Gain = 63 dB
Output = 135 W = +51.3 dBm
250 W
High Pwr
RF In
+1.3
dBm*
Sensor
Head 8482A
Power Meter
HP 8648 A
Signal
Source
20 dB
Directional
Coupler
30 dB
Attn
Spectrum
Analyzer
HP 8560 E
20 W
Sensor
Head 8482A
INPUT
TEST
CONFIGURATION
04-0262B-A
+1.3
dBm*
* Example. Ensure that sufficient
attenuation is present between the
amplifier output and your test equipment
to avoid overdrive or damage. Refer to
test equipment specifications.
Figure 5-1. Amplifier Test Setup Diagram – Configuration A
5-4.2
Gain Test:
1. Disconnect:
a. Spectrum analyzer
b. Signal source.
c. Power Meter and Sensor Head.
2. Connect the network analyzer as shown in Figure 5-2.
3. Set network analyzer as follows:
a. Power output to -11 dBm max.
b. Frequency start to 869 MHz.
c. Frequency stop to 894 MHz.
d. Normalize the network analyzer for gain and return loss.
4. Switch on the amplifier under test, and ensure that the STATUS switch is in the center
position.
5. Check the amplifier gain across the band from 869 MHz to 894 MHz. Gain should be as
specified in Table 1-2. Record test data in Table 5-3.
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27 Vdc
RF Out
G3L-850-135 PYTHON MultiChannel Power Amplifier
Gain = 63 dB
Output = 135 W = +51.3 dBm
250 W
RF In
40 dB
Attn
HP 8753 D
Network
Analyzer
PORT 1
PORT 2
+1.3
dBm*
TEST
CONFIGURATION
* Example. Ensure that sufficient
attenuation is present between the
amplifier output and your test
equipment to avoid overdrive or
damage. Refer to test equipment
specifications.
04-0263B-A
Figure 5-2. Amplifier Test Setup – Configuration B
5-4.3
Input Return Loss:
1. Retain the test configuration shown in Figure 5-2.
2. Read and record the S11 return loss measurement on network analyzer. Record test data in
Table 5-3.
3. Switch off the amplifier under test.
4. Disconnect the test equipment.
5-4
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5-4.4
Test Data Sheet
Record the amplifier’s performance test data below.
MODULE S/N
DATE
Test Conditions:
Load and Source Impedance: 50 Ohms
VSWR: < 1.5:1
Supply Voltage: +27 Vdc ±0.1 Vdc
Table 5-3. Amplifier Performance Data
Test
Specification
RF Gain
Min
Max
Data
Vcc = 27 Vdc
PO = See table 1-4
62.5.0 dB
63.5 dB
Freq. = 869 – 894 MHz
Spurious
Emissions
Vcc = 27 Vdc
PO = See table 1-2
-62 dBc
869 – 894 MHz Band
Gain Flatness
Vcc = 27 Vdc
PO = See table 1-2
±0.5 dB
869 – 894 MHz Band
Input Return
Vcc = 27 Vdc
Loss
PO = See table 1-2
- 16 dB
869 – 894 MHz Band
PASS
FAIL
Tested by
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5-5
Return For Service Procedures
When returning products to Powerwave, the following procedures will ensure optimum response.
5-5.1
Obtaining An RMA
A Return Material Authorization (RMA) number must be obtained prior to returning equipment to
the factory for service. Please contact our Repair Department at (714) 466-1000 to obtain this
number, or FAX your request to (714) 466-5800. Failure to obtain this RMA number may result in
delays in receiving repair service.
5-5.2
Repackaging For Shipment
To ensure safe shipment of the amplifier, it is recommended that the original package designed
for shipping the amplifier be reused. If it is not available, contact Powerwave’s Customer Service
Department for packing materials.
5-6
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Appendix A Abbreviations and
Acronyms
Below is a list of the abbreviations and acronyms used in the industry.
Abbreviation/
Acronym
Definition
ACLR
Adjacent Channel Leakage Power Ratio
ACP
Adjacent Channel Power
A/D
Analog-to-Digital Conversion
ADC
{Analog-to-Digital Converter
{Automatic Data Collection
AM
Amplitude Modulation
AMPS
Advanced Mobile Phone System
ANSI
American National Standards Institute
APC
Automatic Power Control
APTT
Analog Push To Talk
ASG
Applications Support Group
ASIC
Application Specific Integrated Circuit
ATE
Automatic (Automated) Test Equipment
ATP
Acceptance Test Procedure
ATTEN
Attenuator
BER
Beyond Economical Repair
BOM
Bill Of Materials
BPF
Band Pass Filter
BS
Base Station
BTS
Base Transceiver Station (System)
BW
BandWidth
°C
Degrees Celsius
CAD
Computer Aided Design
CCA
{Circuit Card Assembly
CCW
Counter ClockWise
CDMA
Code Division Multiple Access
CDPD
Cellular Digital Packet Data
CTRL
Control
CW
{ClockWise
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Abbreviation/
Acronym
Definition
{Continuous Wave
dB
deciBels
dBc
Referenced to a carrier level
dBm
Reference to one milliwatt
dBw
Reference to one watt
DIN
Deutsches Insitut für Normung eV
DLNA
Duplexer Low Noise Amplifier
DPTT
Digital Push To Talk
DQPSK
Differential Quadrature Phase Shift Keyed
DSP
Digital Signal Processing
DUT
Device Under Test
ECD
Estimated Completion Date
ECM
Electronic Counter Measure
EDGE
Enhanced Data for GSM Evolution
EEPROM
Electrically-Erasable Programmable Read-Only Memory
EIA
Electronic Industries Association
EMC
ElectroMagnetic Compatibility
EMI
ElectroMagnetic Interference
EPROM
{Electrically Programmable Read-Only Memory
{Erasable Programmable Read-Only Memory
ESD
ElectroStatic Discharge
ESG
Electronic Signal Generator
ETDMA
Extended Time Division Multiple Access
ETSI
European Telecommunications Standard Institute
EUT
Equipment Under Test
FAR
Failure Analysis Report
FCC
Federal Communications Commission
FDMA
Frequency Division Multiple Access
FET
Field Effect Transistor
FHMA
Frequency Hopping Multiple Access
FM
Frequency Modulation
FRU
Field Replaceable Unit
FSK
Frequency Shift Key modulation
GHz
Gigahertz
GMSK
Gaussian Minimum Shift Keying
GOLAY
See GSC
GSC
Golay Sequential Code
A-2
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Abbreviation/
Acronym
Definition
GSM
Global System for Mobile Communications
HPF
High Pass Filter
HW
Hardware
Hz
Hertz
IAW
In Accordance With
IC
Integrated Circuit
IMD
InterModulation Distortion
IRL
Input Return Loss
IS-54
Interim Standard 54 for TDMA
IS-95
Interim Standard 95 for CDMA
ISDN
Integrated Services Digital Network
ISM
Industrial, Scientific and Medical unlicensed frequency bands
ISO
{International Organization for Standardization
{ISOlator
kHz
Kilohertz
LDA
Linear Discrete Amplifier (Class A or AB)
LGL
Lower Guardband Limit
LMR
Land Mobile Radio
LMS
Land Mobile Systems
LNA
Low Noise Amplifier
LO
Local Oscillator
LPA
Linear Power Amplifier
LPF
Low Pass Filter
LSL
Lower Specification Limit
LVD
Low Voltage Disconnect
MC
MultiChannel
MCA
MultiChannel Amplifier
MCPA
{MultiCarrier Power Amplifier
{MultiChannel Power Amplifier
MCR
MultiChannel Rack
MFRM
{Multiple Frequency Radio Mobile
{Multifunction Frequency Radio Modulation
MHz
Megahertz
MSO
Master Switch Office
MTBF
Mean Time Between Failures
MTSO
Master Telephone Switch Office
MU
Measurement Uncertainty
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Abbreviation/
Acronym
Definition
M&TE
Measuring and Test Equipment
NAMPS
Narrow Analog Mobile Phone System
NIOSH
National Institute for Occupational Safety and Health
NIST
National Institute for Standards and Technology
NMT
Nordic Mobile Telephone
NVM
NonVolatile Memory
OEM
Original Equipment Manufacturer
OFDM
Orthogonal Frequency Division Multiplexing
OMS
Operational Method Sheet
OOB
Out Of Box
O/P
Output
OSHA
Occupational Safety and Health Administration
PA
Power Amplifier
PAF
Powerwave Amplifier Frame
PAR
Peak to Average Ration
PCB
Printed Circuit Board
PCMCIA
Personal Computer Memory Card International Association
PCN
Personal Communications Network
PCS
{Personal Communications Services
{Personal Communication System(s)
PDA
Personal Digital Assistant
PEP
Peak Envelope Power
PF
PicoFarads
PHS
Personal Handyphone System – Japan
PLC
Product Life Cycle
PLL
Phase Locked Loop
PM
{Phase Modulation
{Preventive Maintenance
PMR
Peak to Minimum Ratio
PO
Purchase Order
PPM
Parts Per Million
PSC
{PCS Single Channel
{Product Serialization Code
PSTN
Public Switched Telephone Network
PTI
Powerwave Technologies, Inc.
PTT
Push To Talk
PWAV
PowerWAVe
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Abbreviation/
Acronym
Definition
QA
Quality Assurance
QAM
Quadrature Amplitude Modulation
RBW
Resolution BandWidth
RF
Radio Frequency
RFI
Radio Frequency Interference
RFQ
Request For Quotation
RFS
RF Solutions
RFSU
RF Switching Unit
RGO
Return Goods Order
RH
Relative Humidity
RL
Return Loss
RMA
{Rack-Mounted Amplifier
{Return Material Authorization
RMP
Reliability Monitoring Plan (Procedure)
RMS
Root Mean Square
RSS
Root Sum Square
Rx
Receive, Receiver
SCHPA
Single-Channel High Power Amplifier
SCPA
Single Channel Power Amplifier
SIM
System Interface Module
SMA
SubMiniature Type A (coaxial connector)
SMT
Surface Mount Technology
SN
Serial Number
SO
System Outage
SOE
Sequence of Events
SW
SoftWare
TBC
To Be Confirmed
TBD
To Be Determined (To Be Defined)
TCXO
Temperature Controlled crystal Oscillator
TD
{Temperature Drift
{Temporary Deviation
TDMA
Time Division Multiple Access
TRU
Transmit Receive Unit
TRX
Transceiver (Transmit / Receiver) Unit
Tx
Transmit, Transmitter
UAI
Use As Is
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Abbreviation/
Acronym
Definition
UART
Universal Asynchronous Receiver Transmitter
UCL
Upper Control Limit
UCLR
Upper Control Limit for Range
UGL
Upper Guardband Limit
UL
Underwriters Laboratories
UMTS
Universal Mobile Telecommunications System
UNL
Unit Nominal Level
URG
Unit Reference Gain
USL
Upper Specification Limit
UUT
Unit Under Test
VADJ
Voltage ADJust (signal name frequently found on schematic or block
diagrams)
VBW
Video BandWidth
VCO
Voltage Controlled Oscillator
VFWD
Voltage ForWarD (signal name frequently found on schematic or block
diagrams)
VREFL
Voltage REFLected (signal name frequently found on schematic or block
diagrams)
VSWR
Voltage Standing Wave Ratio
VVA
Voltage Variable Attenuator
WCDMA
Wideband Code Division Multiple Access
XMT
Transmit
XMTR
Transmitter
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Appendix 2
General Site Survey Form
Name of Operator: Brand Name:
Date:
Info Source:
Tel:
Tel:
Your Name:
Email:
BTS
Sectors(S) To Be Equipped:
Type / Supplier:
Downlink Frequencies in use
MHz to
MHz.
Uplink Frequencies in use
MHz to
MHz.
Ant 0 Signals
BCCH present?
TRXn
Ant 1 Signals
BCCH sometimes present?
TRXn
Plans to add additional TRX during trial?
Feedline
Size:
Length
, dB Loss estimate
For existing sites: BTS jumper from BTS top to feedline on tower:
Shelter exit on up tower:
Jumper to antenna:
Overall feedline loss estimate from BTS to Antenna ____________________________dB
Jumpers
From power amplifier cabinet to feedline for tower required:
Length
, Connector Type
, and Gender
Location
On Roof Near Antenna?
On Ground?
Type of raised platform?
Adequate space including ½ meter min jumper bend radius at power amplifier left side?
Is a structural analysis needed?
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Network Link Budget
RF carrier power (each TRX) at BTS top connector (in dBm)?
Desired RF carrier power (each TRX) at power amplifier cabinet output connector (in dBm)?
Current system uplink and downlink balance or difference?
Is discontinuous transmit (DTX) feature used?
Power
AC Voltage available for power amplifier at site:
Amps
Vac;
Singe Phase or Three Phase? (circle one)
Main Panel or Sub Panel? (circle one)
Required RF Jumpers (8x8x8 configuration)
9 pieces Type N male to Type N male, ½” Heliax jumper - BTS top to power amplifier cabinet
input
Length:
6 pieces 7/16 DIN male to 7/16 DIN male, ½” Heliax jumper - power amplifier cabinet output
to antenna feedline
Length:
Other? (Type & Length)
Required Cables (non-RF)
AC wiring from panel to power amplifier cabinet. Length:
Interconnecting alarm wire and connection. Length:
Ground bus wiring and attachment. Length:
Host is Responsible for
• Installing power mains panel
• Contractor management of cabinet mounting, installation and coax seal weatherproofing.
• Location preparation: structural analysis, platform installation, building code conformance,
site security
Photos Required
• BTS top connection
• BTS front inside showing TRX unit and number of TRX
• Wide view of BTS and proposed power amplifier cabinet location in same photo
• Proposed power amplifier cabinet location shown with a 1 meter long ruler in view nearby
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• Existing feedline cable to antenna (where power amplifier cabinet output will connect to)
• Power mains circuit breaker panel (shows adequate capacity for breakers)
• Misc. pictures showing tower and site access.
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Corporate Headquarters
Powerwave Technologies, Inc.
1801 East St. Andrew Place
Santa Ana, CA 92705 USA
Tel: 714-466-1000
Fax: 714-466-5800
www.powerwave.com
Main European Office
Antennvägen 6
SE-187 80 Täby
Sweden
Tel: +46 8 540 822 00
Fax: +46 8 540 823 40
Hong Kong Office
23 F Tai Yau Building
181 Johnston Road
Wanchai, Hong Kong
Tel: +852 2512 6123
Fax: +852 2575 4860
©Copyright October 2004, Powerwave Technologies, Inc. All Rights reserved. Powerwave, Powerwave Technologies, The Power in Wireless and the Powerwave logo are registered trademarks of Powerwave Technologies, Inc.
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