Powerwave Technologies MCPA4080 User Manual

SPECTRIAN

MCPS4080 SERIES

MCP A

MultiCarrier Amplifier Systems

INSTALLATION & OPERATION

MANUAL

December 200 1 Rev 1.5

Introduction

proprietary information of Spectrian Corporation . No part of this manual may be copied or disclosed without written authorization



2001 Spectrian Corporation. This document contain s

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TABL E OF CONT E NTS

Introduction

1 Introduction

1.1 About this Manual...................................................................................................................1

1.2 Safety Information...................................................................................................................2

1.3 Introduction to the MCPS4080 Family................................................................................... 3

1.3.1 MCPA Module Functional Description..........................................................................4

1.3.2 MCPS4080 Amplifier Syste m......................................................................................... 5

2 Planning and Preparation.................................................................................................................7

2.1 Installation Planning................................................................................................................7

2.2 Site Planning Guide.................................................................................................................7

2.2.1 Site Considerations..........................................................................................................7

2.2.2 Rack Installation Considerations.....................................................................................8

2.2.3 Cable Connections...........................................................................................................9

2.3 Determine the required RF input power................................................................................10

2.3.1 Set RF input drive power for each channel...................................................................11

2.4 Prepare for Installation..........................................................................................................12

2.4.1 Inventory Received Equipment.....................................................................................12

2.4.2 Unpack Received Equipment ........................................................................................12

....................................................................................................................................1

2.4.3 Repackaging for Return Shipment................................................................................13

3 MCPS4080 Installa tion.................................................................................................................14

3.1 Introduction...........................................................................................................................14

3.2 Task safety equipment, tools and materials ..........................................................................14

3.3 Rack Installation....................................................................................................................15

3.3.1 Install Shelf Subassembly.............................................................................................15

3.3.2 Install Modules in Shelf................................................................................................16

3.4 Cable and Wire Connections.................................................................................................16

3.4.1 Connect Chassis Ground Wire......................................................................................16

3.4.2 Connect DC Input Power Cables ..................................................................................16

3.4.3 Connect RF Output and Input Cables ...........................................................................17

3.4.4 Connect Alarm Interface Cables...................................................................................18

3.5 Finish Installation ..................................................................................................................18

3.5.1 Set the MCPS4080 unit address....................................................................................18

3.5.2 Verif y Installation..........................................................................................................18

4 System Start-Up ............................................................................................................................19

4.1 Introduction...........................................................................................................................19

4.2 Safety Information and Tools................................................................................................ 19

4.3 Verify system installation......................................................................................................19

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Introduction

4.4 Power Up the MCPS4080......................................................................................................20

5 MCPS4080 System Monitoring.....................................................................................................21

5.1 Introduction............................................................................................................................21

5.2 Monitoring the MCPS4080 System Operation......................................................................21

5.3 Alarm Definitions..................................................................................................................21

5.3.1 Alarm classification.......................................................................................................21

5.3.2 Alarm Responses...........................................................................................................22

5.4 MCPS4080 Alarm Limits and Protection Circuits................................................................23

5.4.1 MCPA Module Analog Protection Circuits...................................................................23

5.4.2 MCPA Module Alarms..................................................................................................24

5.4.3 MCPA System Alarms..................................................................................................24

6 Troubleshooting and Maintenance................................................................................................26

6.1 Introduction............................................................................................................................26

6.1.1 Safety Information .........................................................................................................26

6.2 Troubleshooting.....................................................................................................................27

6.2.1 Usi ng LED Indicators ....................................................................................................27

6.2.2 Using the Diagnostic Port Output..................................................................................27

6.2.3 Using Remote Alarm Monitoring..................................................................................27

6.3 Periodic Maintenance............................................................................................................28

6.3.1 Dust Removal................................................................................................................28

6.3.2 Visual Inspection...........................................................................................................28

6.4 Module Replacement.............................................................................................................28

6.4.1 Replacing an RF Module...............................................................................................28

6.4.2 Replacing an AMM.......................................................................................................28

6.4.3 Replacing shelf subassembly.........................................................................................29

6.5 Module Service......................................................................................................................29

6.5.1 Replacing MCPS4080 Fan Modules .............................................................................29

Appendix A1 Spectrian, Inc. Offices.....................................................................................................31

Appendix A2 Major Electrical Specifications.......................................................................................32

Appendix A3 Major Mechanical Specifications ...................................................................................33

Appendix A4: MCPS4080 System Checkout......................................................................................36

MCPS System Checkout................................................................................................................36

Equipment Required......................................................................................................................36

Setup Procedure.............................................................................................................................36

Performance Checkout Procedure .................................................................................................37

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1 Introduction

Chapter 1 introduces the MCPS4080 Series of Multi Carrier Power Amplifier (MCPA) Systems. It describes structure of this manual and introduces the different MCPS4080 Series amplifiers.

1.1 About this Manual

The following manual describes how to install, operate, and maintain the MCPS4080 series of amplifiers. It is arranged into the following sections.

Introduction

Section 1, main features and describes how the system documentation is organized.

Section 2, the installation and assuring proper preparation for the installation.

Section 3, MCPS4080 amplifier system.

Section 4, the MCPS4080 amplifier system.

Section 5, of MCPS4080 system monitoring.

Section 6, using the indicator LED’s and status/alarm messages. Section 6 also has instructions for routine maintenance and for installation of new field-replaceable modules in the MCPS4080 amplifier

Appendix A1, other contact information.

Appendix A2, the MCPS4080 amplifier systems, including the Connector Pin-outs and Interface Protocols used in the front panel diagnostic port and the optional base station alarm and control interfaces.

Appendix A3, specifications met by the MCPS4080 amplifier systems.

Introduction

Preparation and Planning

Installation Instructions

System Start-up,

System Monitoring

Troubleshooting and Maintenance

Spectrian, Inc. Company Offices

Electrical Specifications

Mechanical Specifications

, introduces the systems in the MCPS4080 family and their

, contains information helpful for planning

, describes how to properly install the

has procedures for power-up and initial check out of

presents information on basic and optional methods

, describes how to diagnose faults

, contains company locations and

, details the electrical specifications met by

, includes mechanical and environmental

Appendix A4, operational check of the MCPS4080 amplifier system.

MCPS

4080

System Check Out

, has the procedure for a quick

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Introduction

Throughout this manual, notes, cautions and warnings are used with this convention:

✎ ☛

Note: Sub-optimal or out-of-specification performance will result from not following the instructions presented in ‘notes’.

Caution: Follow ‘caution’ notes to avoid possible damage to equipment. Warning: Injury to personnel, equipment fire, or other hazardous situations

will result from not properly following ‘warning’ instructions.

1.1.1 Equipment Changes

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

1.2 Safety Information

The MCPS4080 has been designed for maximum safety and reliability when it is installed, used, and maintained in accordance with the procedures and instructions in this manual by trained and qualified technicians. To ensure the safe and compliant operation of the system, always follow the safety and operational recommendations in this manual.

WARNING: The MCPS4080 produces high levels of RF radiation. Severe radiation burns can occur if recommended safety precautions are not strictly observed.

-- Do not operate exposed circuitry or radiating elements with personnel in close proximity to the radiating source. Always replace covers and shields during operation.

-- Persons with cardiac pacemakers should avoid exposure to RF radiating elements.

-- Exposing the human eye to high levels of radio-frequency radiation may result in the formation of cataracts.

! !

WARNING: Do not install or operate theMCPS4080 amplifier in the presence of flammable gases or fumes.

Each RF Module and the shelf subassembly weigh 22.7 kgs (50 lbs); when crated for shipping an MCPS4080 system can weigh in excess of 131.5 kgs (290 lbs) and be unbalanced. To avoid injuries or damage, use care and obtain assistance when lifting MCPS4080 components.

☛

Always use the recommended safety equipment.

☛

Please read and understand all instructions and warnings before handling an MCPS4080.

☛

MCPS4080 amplifiers may only be installed in restricted access areas (dedicated equipment rooms, equipment closets, or the like) in accordance with Article 110-

16. 110-17, and 110-18 of the National Electrical Code, ANSI/NFPA No. 70.

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1.3 Introduction to the MCPS4080 Famil y

The MCPS4080 is a modular, ultra-linear PCS-frequency amplifier system providing up to 290 Watts (total) of output power. Designed for maximum flexibility and reliability, the MCPS4080 can increase the range and capacity of new or existing base stations.

Modulat i on For m a t s

The MCPS4080 can amplify any number of signal carriers using IS-136 TDMA, IS-136HS GSM, IS-136HS EDGE, or IS-95 CDMA modulation up to the maximum rated system output power.

Modularity

The MCPS4080 family is designed for operation with 1 to 4 amplifier modules, each providing up to 100 Watts of RF output power (exclusive of combining losses).

Mounting Configurations

The MCPS4080 amplifier systems are available in a variety of configurations. Mounting kits are available for installation in 23-inch, 600mm, 24-inch, or 25-inch equipment racks. Multi-module shelves are 12 RU (21 in.) high. Single module shelves are 3 RU (5.25 in.) high.

Introduction

Peripheral Products

Spectrian offers optional products to assist in base station configuration and setup. Among these products are multi-port RF combiners, bandpass filters, preamplifiers, and AC/DC power rectifiers. Please consult with the factory or sales for more information on these peripheral products.

RF I nterfaces

The Spectrian MCPS4080 has a single RF input for combined input signals, and a single RF output to the transmit filter. There is also a single module configuration with three input connectors combined within the amplifier and a single output connector.

Alarms and Control

The MCPS4080 system provides visual status information through front-panel LED indicators. Status information is also transmitted via a front-panel RS-232 port using Spectrian’s optional Graphical User Interface program.

The MCPS4080 can also be optionally equipped with additional alarm and control interfaces, including dry-contact or TTL alarm connections RS-232 or RS-422 interfaces to network operations and administration systems.

The MCPS4080 is designed to enable system maintenance without removing the amplifier from service. In multi-module (high power) systems, the RF modules can be hot-swapped during operation without affecting calls in process. The Amplifier Management Module (AMM) can be easily replaced in the field. The amplifier modules are designed so the cooling fans can be replaced in the field by

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Introduction

qualified service technicians, greatly reducing service shipping costs and turnaround time.

1.3 .1 MCPA Module Functional Description

To achieve the high level of linearity required to support multiple PCS carriers at the minimum cost, the RF modules in the MCPS4080 use a single loop feedforward correction architecture with two amplification paths – the containing the main amplifier, and the

error path

The combination of these two paths in a feed forward loop configuration results in a signal in which the distortion products have been cancelled, enabling highly linear operation of the amplifier.

, containing the error amplifier.

main path

Preamplifier

RF Input

Delay

Line

1.3.1.1 Main Loop

MainPath

Phase/Amplitude

Control

Main Amp

Outpu t Mo d ul e

Delay Filter

Amplifier

Manangement

Unit

Pilot

Generator /

Reciever

Carrier

Cancellation

Figure 1: RF Module Functional Block Diagram

The output of the main amplifier contains both the desired signal and Intermodulation Distortion (IMD) products. This signal is coupled off and combined with the undistorted input signal coupled off the preamplifier. The relative delay and phases of these signals are adjusted so they combine to cancel out the desired signal, creating an error signal composed of only the main amplifier IMD products. The cancellation process is controlled by a Digital Signal Processor, which insures optimum carrier cancellation over all environmental conditions.

Error Path

Phase/Amplitude

Control

Error Amp

RF Output

1.3.1.2 Error Loop

The error signal is amplified in the error loop. The amplified error signal is then combined with the output of the main amplifier containing both the desired signal

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and distortion products such that the distortion products cancel. The error loop provides the adjustments and controls necessary to assure that the amplitude, phase and delay of both signals result in the desired cancellation.

1.3.1.3 Amplifier Management

The Amplifier Management Unit (AMU) monitors and controls performance of the various subassemblies within the RF module. The AMU provides operating status information via front panel LEDs. Within a multi-module system, the AMU provides status to the MCPS4080 AMM.

1.3.2 MCPS4080 Amplifier System

A fully-equipped MCPS4080 consists of a rack-mounted shelf containing up to four RF modules. Multi-module systems contain an Alarm Management Module, and an internal divider/ combiner. A block diagram of the system is shown in Figure 2.

Introduction

Input

Splitter

100 W MCPA

Modules

÷÷÷÷

Status Port

RS-232

Figure 2 System Block Diagram

Alarm Management

Basestation Interface

RS-422 or RS-485

Module

Combiner

Output

ΣΣΣΣ

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Introduction

The standard MCPS4080 configurations are summarized in Table 1. Please consult the factory or Spectrian sales for configurations not listed here.

Power Dimensions

(W x D x H)

80-100W 23” x 20” x 3 RU Single module co nfiguration in 23 in. housi ng

145W to 290 W 21” x 20” x 8 RU 2 to 4 modules combined in 21 in. rack

configuration

Comments

Table 1: MCPS4080 System Configurations

MCPA modules

The RF modules are ultra-linear amplifiers optimized for high power amplification of PCS signals. Each RF module provides up to 100 Watts of RF output power. Multi-module systems have combiner losses, which reduce the output power of each module by approximately 10%. The RF module has been discussed in section 1.2.1 The end user is responsible for creating a frequency plan and power allocation, which ensures that in no case the peak output power of a base station transmitter exceeds 100 watts.

Amplifier Management M odule

The Amplifier Management Module (AMM) contains the system control and alarm management logic and the interface to external operation and control systems.

Divider/Combiner

The divider/combiner used in multi-module systems allows the RF modules to function as a single system. The combiner has an active architecture, which automatically reconfigures to minimize combining losses if an RF module should fail.

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Planning and Preparation

2 Planning and Preparation

2.1 Installation Planning

It is important to ensure proper planning and site preparation is complete prior to beginning the installation of the MCPS4080. The following sections describe installation considerations and the information required before beginning the installation procedure. Spectrian Applications Engineering is always available to assist with planning for the installation of the MCPS4080.

2.2 Site Pla nni ng Guide

For each MCPS4080 cell site installation, there must be a Site Planning or Site Engineering guide giving the detailed information on the site considerations, rack installation, cable connections, and Radio Parameters.

✎

Note: Local building and fire codes govern the manner in which some site preparation and installation tasks are performed. Spectrian recommends that you consult your local building inspector or a licensed engineer to ensure that the site installation conforms to local building codes.

2.2.1 Site Considerations

Intended Installat ions

The MCPS4080 system is intended for installation only in restricted access areas (dedicated equipment rooms, equipment closets, environmental shelters, or the like) in accordance with Articles 110-16, -17, and -18 of the National Electrical Code, ANSI/NFPA No. 70.

Weight

The MCPS4080 shelf and each RF module weigh approximately 50 pounds (22.7 kg); the fully equipped system weighs 250 pounds (113.3 kg). The system must be installed, using the appropriate mounting kit, into a rack capable of supporting the unit, and located on a floor or surface capable of supporting the combined weight of the rack, the MCPS4080, and the installer or technician.

Floor Covering

If you intend to use a floor covering under the MCPS4080, avoid combustible materials, industrial carpeting, and materials that will permit generation of electrostatic charges.

Illumination

The MCPS4080 is designed to be installed and serviced under normal workroom lighting. During installation, room lighting must be bright enough to allow reading instructions and inspection of modules, but not so bright as to interfere

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Planning and Preparation

with viewing the status LED indicators on the front panel. The MCPS4080 should be oriented or shielded so that direct sunlight does not fall upon the front panel.

Fire Pr ot ection

Spectrian recommends that the MCPS4080 installation site be equipped with smoke detectors and an automatic fire-extinguishing system. In addition, for personnel safety, the site should be equipped with a portable halon or CO2 fire extinguisher.

Altitude

When installing the MCPS4080 above 5000 ft (1542 m), derate the maximum operating temperature by 2° C per 1000 ft (304 m) above 5000 ft.

Ventilation

The MCPS4080 requires unrestricted airflow around the MCPS4080. The site must be ventilated or air-conditioned so that ambient air does not exceed 50° Celsius (122° F).

Ambient air qualit y

The MCPS4080 should be installed in a location that is free of airborne dust and toxic or corrosive fumes.

Vi br ation and Noi se

The MCPS4080 tolerates moderate levels of vibration and ambient noise. The MCPS4080 should not be installed in a location subject to mechanical shocks or vibrations conducted from nearby mechanical equipment. The MCPS4080 generates fan noise below 65 dBa during operation and no additional acoustic treatment of the site is needed.

Lightning Protection

Spectrian recommends that all power, RF, and signal lines that connect to the MCPS4080 be protected by approved lightning arrestors. Your local fire or safety codes will determine the type of lightning protection required.

Grounding

Spectrian recommends that the MCPS4080 and entire equipment rack be grounded with an engi neered grounding system, including ground halo and ground rods.

2.2.2 Rack Installation Considerations

Rack Space

Multi-module MCPS4080 systems require 12U of rack space in a 21” rack. Optional mounting hardware for other rack sizes is also available. When used, the optional preamplifier requires an additional 2U above the shelf. Single module shelves require 3U of rack space.

Clearance

During operation, the MCPS4080 requires front cabinet clearance for unrestricted cooling air input, plus a minimum of 4 inches (102mm) behind the MCPS4080 to exhaust hot air. Some additional rear clearance is desirable to accommodate routing the RF input and output cables and the DC power cables to their connections on the rear of the unit.

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2.2 .3 Cabl e Connections

DC Power Suppl y

The MCPS4080 requires customer-supplied connections to the site +27 VDC power supply. The MCPS4080 is normally connected to the power supply with a separate connection for each RF module; a single connection to each shelf is also possible using the optional shelf power bus. Table 2 shows the required current and recommended power service for MCPS4080 systems with the indicated number of active amplifier modules installed in a system shelf.

Planning and Preparation

# RF

Modules

1 80W (Typical)

2 145W Typical 90 Amps 4 wires (2/module), #6AWG, #10 lugs

3 220W Typical 135 Amps 6 wires (2/module), #6AWG, #10 lugs

4 290W Typical 180 Amps 8 wires (2/module), #6AWG, #10 lugs

RF Output

Power

100W (MAX)

(Max)

27 VDC

45 Amps 2 wires (2/module), #6AWG, #10 lugs

Recommended Service

1 ea. 60A Circuit Breaker

2 ea. 60A Circuit Breaker

3 ea. 60A Circuit Breaker

4 ea. 60A Circuit Breaker

Table 3: I ndiv idua l Powe r Conne c tions to e a c h RF Module

Single Bussed Conn ection

When using the bussed connection option, the service should be sized for a fully equipped shelf. This will provide adequate service with capacity for future expansion.

Recommended Service: 2 Wires, #2AWG, ¼”narrow tongue lug (T&B 55116 or equivalent); 1 ea. 240A Circuit Breaker.

Chassi s Gr ound W i r e

The MCPS4080 shelf requires a customer-supplied chassis ground connection using #8AWG with a ¼” ring lug.

RF Input and O ut put Cabl es

The MCPS4080 requires a single customer-supplied SMA male RF input cable and a single customer-supplied male type-N RF output cable. The RF output cable must be rated to properly handle the MCPS4080 output power. The female connectors are on the rear of the MCPS4080 shelf. Spectrian offers optional RF cables for use in connecting the MCPS4080 amplifier.

Alar m Int erface Cable s

The MCPS4080 requires customer-supplied interface cables to the system alarm interfaces. The standard system has screw terminal connections to form C-relay alarm contacts; optional RS 422 serial connections are also available. The alarm connection options for the MCPS4080 are listed in Appendix A3.

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Planning and Preparation

Radio Parameters

To set up the MCPS4080, the installer must know the following radio parameters for the MCPS4080 installation.

• Total Planned Output Power

• Number of CDMA Frequency Assignments and power of each FA

• Number of /TDMA/GSM/EDGE Channels and power of each channel

• Planned System Gain

Install at ion Equipment

Refer to the Tools and Materials listing in the following sections for the required MCPS4080 installation and test supplies.

2.3 Determ ine the required RF input power

Before applying RF input power to the MCPS4080, determine the input drive level and output power needed for each channel being amplified by using the RF Drive Power Worksheet, shown below.

Once the required RF input power for each channel is determined, continue to the next step, setting the RF input drive power.

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+ 30 hidden pages

Powerwave Technologies MCPA4080 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual