Powerwave Technologies MCPA4080 User Manual

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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

MCPS4080 System Operation iii

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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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Planning and Preparation

RF Drive Power Worksheet

A) Total output power (P B) Determine total output required for each fully loaded

CDMA Frequency Assignment (FA):

D) Total # of channels, including setup (#ch) = E) Maximum per channel output power (PAN/ch) =

(PAN/ch = PAN/# of channels) F) System Gain (Gain) * = dB

G) Maximum composite input power (PIN)= (PIN= P

H) Maximum per channel input power (PIN/ch ) = (PIN/ch in dBm = PAN/ch in dBm – Gain in dB)

* NOTE: Depends on configuration, which is factory settable from 30 dB to 60 dB. On single

module systems, the gain may be adjusted by the end user with Spectrian’s Graphical User

Interface software. Consult with factory or Spectrian Sales for more information.

in dBm – Gain in dB)

OUT

) required = W dBm

OUT

# of FA’s =

total power per FA =

total CDMA power (P

Total available analog power (PAN ) =

(PAN = P

OUT

– P

CDMA

)

CDMA

) =

WdBm

dBm

2.3 . 1 Set RF input drive power for each ch annel

☛

MCPS4080 System Operation 11

Caution: If the RF Input Cable is connected to the MCPS4080, disconnect it from the MCPS4080. Connect the RF input cable to the Power Meter for the following step.

Caution: Make sure that the power to be measured with the meter does not exceed the manufacturers recommended maximum input level.

Switch on the RF input drive power at the customer provided host system exciter following the instructions supplied with your RF source equipment.

Set and verify the RF input drive level for each individual channel

1. Key-on each RF input channel individually.

2. Monitor the RF input using a HP436A or equivalent power meter.

3. Verify that the maximum input power for the channel does not exceed the calculated levels on the RF Drive Power worksheet (line H).

4. Key off the channel and repeat for the remaining channels. Continue to verify the required channel input power is not exceeded.

After verifying the power of each individual channel individually, ensure that the total average input power remains less than or equal to the maximum rated composite power calculated in (G) of the worksheet.



Planning and Preparation

1. Key-on all channels at one time, including any CDMA F.A.s, and measure input power.

2. If the average composite input power exceeds the calculated average composite input power (line H), readjust all channels as necessary to ensure average input power remains less than or equal to specifications.

Turn off all channels. The drive power is now set properly.

2.4 Prepare for Installation

Before beginning the installation, verify that all the necessary site and radio information, installation materials, tools, and MCPS4080 equipment are on hand. Correct any problems or omissions before continuing. Refer to the following Receiving and Unpacking Procedure to prepare the MCPS4080 equipment.

2.4.1 Inventory Received Equipment

1. Upon receipt of the MCPS4080, remove the packing lists, installation kit, and other documents attached to the shipping container.

2. Examine shipping documents to make certain that they agree with your copy of the order. If there is a discrepancy between the order and the items or quantity shipped, contact your Spectrian Customer Service representative listed in Appendix A1 of this manual.

3. Check the packing list and verify that all necessary equipment has been delivered, and that the parts are undamaged. If any evidence of shipping damage is noted, notify the delivery agency before continuing.

☛

Caution: If the container or contents appear to be damaged, you must contact the carrier without delay and file a damage claim. If shipping damage occurred, the carrier may wish to have a claims agent present when the MCPS4080 is unpacked and inspected. To protect your warranty rights, you must also notify your Spectrian representative and advise that the MCPS4080 was damaged during shipment.

2.4.2 Unpack Received Equipment

Uncrating, inspecting, and preparing the MCPS4080 for site installation will require some tools and materials not included in the shipment. Use of the following materials is suggested to perform these tasks.

✎

Note: Assemble all tools, materials, and safety equipment before beginning work.

Safety Equi pment

• Safety glasses

• Work gloves

• Steel-toe shoes

• Back-support belt

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Planning and Preparation

Tools

• Box knife

• Pair of large scissors

• Inspection flashlight or lamp

• Pen or pencil

• Strap cutter

• Straight-blade screwdriver

Other Materials

• A copy of the Purchase Order

• A copy of the Packing List

Unpack equip ment

1. Open the shipping container(s) and inspect the contents. Using the required safety equipment and tools, carefully cut the metal and/or nylon straps that surround the shipping containers. When using a box knife or scissors, take care not to damage the contents of the box. Take care to avoid scratching the cabinet finish.

✎

2. Do not remove the ESD protective wrapping that surrounds the cabinet, unless wearing an ESD protective wrist strap. If possible, remove this material by unwrapping the MCPS4080 by hand, rather than cutting this material with scissors or knives. Spectrian recommends not removing the protective wrapping until installation.

3. Remove spacers, packing inserts, protective coverings, plastic bags, and other shipping materials from the outside of the MCPS4080. Avoid using knives or scissors to perform this task.

4. Carefully collect and dispose of the packing materials. Many of the packing materials used by Spectrian are suitable for recycling and need not contribute to landfills.

5. While inspecting the unpacked MCPS4080, compare the quantity and labeling of each module with shipping documents and the purchase order. If there is an unresolved discrepancy between the order and the items received, contact your Spectrian representative.

6. Inspect the MCPS4080 exterior for evidence of shipping damage. Metal surfaces should not be dented or scratched. Panels, handles, screws, and indicators should appear undamaged and properly aligned. Connectors should be tightly affixed to the cabinet, with no visible dents or distortion.

Note: If you discover damage during inspection, contact the shipper and Spectrian at once. The shipper will furnish instructions on how to document the discovered damage. Spectrian will arrange to promptly ship replacement parts.

2.4.3 Repackaging for Return Shipment

If it is necessary to repackage the MCPS4080 for return shipment, contact Spectrian Customer Service for detailed instructions. If possible, use the original cartons and inserts to package equipment for return. Otherwise, use suitable shipping cartons and foam inserts to prevent damage in transit.

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MCPS4080 Installation

3 MCPS4080 Installation

3.1 Introduction

The following section describes how to install the MCPS4080 series amplifier in a base station.

Each MCPS4080 system features rear-access RF input and output connectors, a DC voltage input receptacle, and a front-access RS-232 status interface connector. Additional optional features include a rear-access RS-422 serial interface connector and a remote alarms interface connector. Specific connector pinout information for your MCPS4080 configuration is provided in Appendix A3.

Please read and understand the instructions and warnings in this section and at the beginning of this manual before handling or unpacking the MCPS4080 modules.

The MCPS4080 is designed to be installed by trained and qualified technicians.

☛ ☛

✎

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

Caution: Do not attempt to move an MCPS system with modules installed. Caution: Provide bottom support when removing an MCPA module to avoid

damage to the fan housing.

3.2 Task safety equipment, tools and materials

The following safety equipment, tools, and materials are recommended to perform the installation tasks in this section.

Safety Equipment

• Safety glasses

• Work gloves

• Back-support belt

Tools

• Heat Gun (Master 10008 – MAS or equivalent)

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• Cable Cutter (Klein 63050)

• Flat and Phillips screwdrivers

• Adjustable wrench

• ESD protective wrist strap

• Inspection lamp or flashlight

• Crimping tool (T & B TBMS or equivalent)

• Digital Volt Meter (DVM)

• Torque Driver (Mountz TLS1360 or equivalent)

• Curre nt Meter

• Wire Strippers (Greenlee 45109 or equivalent)

Materials

• Pressurized can of spray-on contact cleaner

• Rack-mounting hardware and fasteners

• DC Power, RF, and signal cables

MCPS4080 Installation

• Crimp-on circular lugs

• 8 AWG insulated (green) copper ground wire

• Shrink Tubing

3.3 Rack Installation

The MCPS4080 series amplifiers mount in the equipment rack using rackmounted side support rails.

The MCPS4080 shelf subassemblies are labeled with the part and serial numbers, using standard EIA part identification, date code, and serializing methods. It is also labeled with the appropriate FCC approvals.

All MCPS4080 shelf subassemblies contain all internal wiring for DC power and RF signal distribution to the RF modules and the interfaces to the cell site. Brushless DC cooling fans are mounted on each RF module; cooling air is drawn through grille openings in the front of each module and discharged through the rear.

Warning: The MCPS4080 shelf sub-assembly weighs approximately 50 lbs (22.7 kg). Use caution when lifting; obtain assistance if necessary.

3.3.1 Install Shelf Subassembly

1. Make certain that adequate vertical space within the rack enclosure is

available. Verify that there will be at least 4 inches (10cm) of space behind the unit when installed for cooling air flow.

2. Put on an ESD protective wrist strap, and properly ground it.

3. Unpack the MCPS4080 side mounting rails and attachment hardware and

install them in the rack as shown on the accompanying job sheet.

MCPS4080 System Operation 15



MCPS4080 Installation

4. Unpack the MCPS4080 shelf and record its serial number. Ensure the shelf is in the proper upright vertical orientation and slide it onto the mounting rails.

5. Use the supplied mounting screws to attach the shelf to the rack. Tighten rack-mounting screws securely.

3.3 . 2 Install Modules in Shelf

1. Unpack each RF module. Align each module with the guides in an amplifier slot and slide the module as far as possible into the shelf, making sure the module is fully seated. Note that each module weighs approximately 50 lbs. (22.7 kg); get a helper to assist if necessary. Tighten the fasteners at the bottom of each faceplate to lock the modules in place.

2. Unpack and install the Amplifier Management Module (AMM) module in the rightmost slot of the shelf. Tighten the fastener at the bottom of the faceplate to lock the module in place.

3. Inspect the alignment of the finished installation, and adjust if needed. If no problems are found, rack installation is complete.

3.4 Cable and Wire Connections

3.4 .1 Connec t Chassis Ground Wire

1. Locate the chassis ground stud on the rear of the MCPS4080 for ground wire attachment .

2. Measure the distance and routing between the MCPS4080 ground stud and an attachment point to earth ground. Cut a length of #8 AWG insulated (green) solid copper wire sufficient for the connection.

3. Crimp a ¼” circular lug to one end of the ground wire.

4. Remove the nut and lock washer on the MCPS4080 ground stud. Attach the DC ground wire lug to the grounding stud on the MCPS4080, and replace the lock washer and nut. Tighten the nut securely.

5. Connect the other end of the ground wire to the appropriate earth ground.

6. Use a DVM to verify that the resistance between the chassis ground and true earth ground is less than 100 Ohms.

7. Inspect the finished connection. If no problems are discovered, ground wire installation is complete.

3.4 .2 Connect DC Input Powe r Cables

The MCPS4080 power connection can be made using a pair of wires for each RF module, or via a single bussed connection. The DC input voltage cabling must be terminated by crimped lugs and sized to the correct wire gauge to accommodate the wire length and the DC current requirements of the MCPS4080 in accordance

16 MCPS4080 Operations Manual



MCPS4080 Installation

with local building codes and industry practice. Refer to Table 2 for the recommended power supply circuit and wire sizing for each option.

☛

WARNIN, Do not perform DC lead installation with energized leads. Ensure that the DC power supply is OFF for all installation activities!

1. Locate the positive and negative terminals on the customer-provided DC power source, and verify polarity with a DVM.

2. Locate the power supply lugs at the back of the switched combiner assembly. The four #10 lugs are for the per-RF-Module connection.

3. Measure the distance and routing between the power source and the MCPS4080 DC l ugs.

4. For each power connection being made, cut equal lengths of wire for power and return. Strip and connect each wire to the appropriate power connection, using the crimping tool and the supplied ground lug.

Caution: Verify the polarity of each supply wire prior to connecting them to the shelf subassembly. A reversed-polarity connection will severely damage the MCPS4080 and will void the product warranty.

5. Crimp the appropriate terminal lugs onto each power supply wire.

6. Attach one positive supply wire and one return wire to each of the four sets the power supply lugs at the top of the rear of the shelf subassembly. Tighten the attachme nt nuts fi r mly.

7. Inspect the finished connection. If no problems exist, the DC input power cable installation is complete.

3.4 .3 Connect RF Output and Input Cabl es

The MCPS4080 has one female type-N amplified RF output for connection to a customer-supplied coaxial cable terminated with a male connector, and one female SMA RF input for connection to an customer-supplied input cable terminated with a male SMA connector.

☛ ✎

WARNING, Do not perform RF cable installation with DC power applied to the MCPS4080. Ensure that the input DC power supply is OFF before handling RF cables.

Caution: The Output cable must be connected before connecting the Input cable.

Note: The integrity of RF cabling is critical to the electrical performance of the MCPS4080. Ensure connectors are properly assembled, are free of debris, and are clean.

1. Locate the male N-type RF output connector on the end of the coaxial cable attached to the output load. Inspect the connector and clean if necessary; fix any problems with the cable or connector before proceeding.

2. Locate the female N-type RF connector labeled “RF OUTPUT” on the MCPS4080.

MCPS4080 System Operation 17



MCPS4080 Installation

3. Screw the male cable connector firmly onto the female RF output connector of the MCPS4080.

4. Locate the male input RF connector on the end of the coaxial cable from the RF signal source. Inspect the connector for damage or irregularity, and fix any problems with the cable or connector before proceeding.

5. Locate the female SMA connector labeled “RF INPUT” on the rear of the MCPS4080.

6. Screw the male cable connector firmly onto the MCPS4080 female connector.

3.4.4 Connect Alarm Interface Cables

1. The MCPS4080 provides optional factory-configured connections for dry contact, TTL, or RS-422 communications and alarm output to the customer system. Refer to the connector pin-out and descriptions in Appendix A3for the connections applicable to your MCPS4080.

2. Locate the interface connectors located on the rear of the shelf subassembly behind the Amplifier Management Module (AMM). Inspect the connector and clean if necessary; correct any problems with the cable or connector before proceeding.

3. Connect the male connector or input wires to the connector mounted on the MCPS4080. Tighten the two screws on the cable connector (if any) firmly.

3.5 Completing the Installation

3.5.1 Set the MCPS4080 unit address

Each MCPS4080 may be configured with a unique address (0 – 7) for commands and status reports sent through the RS-422 port.

If this option is included in the MCPS4080, locate the rotary switch on the rear of the MCPS4080 Amplifier Management Module. Set the switch to the desired address.

3.5.2 Verify Installation

Recheck all physical and electrical connections to the MCPS4080 and remedy any problems discovered.

Once the installation is verified, the MCPS4080 is ready to be set up and placed in service, as described in the next section.

18 MCPS4080 Operations Manual



4 System Start-Up

4.1 Introduction

This section contains instructions on powering up the MCPS4080 amplifier system. These procedures should be followed after installing the MCPS4080 amplifier system in the rack.

4.2 Safety Information and Tools

To avoid injury, installers, technicians, and maintenance personnel must follow Spectrian's recommended procedures and observe safety precautions.

System Start-Up

! !

✎

Warning: The MCPS4080 should only be operated by trained and qualified personnel. Always follow safety warnings.

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

Note: Before shipment, the MCPS4080 was inspected and found free of mechanical and electrical defects. The electrical performance of the MCPS4080 should be verified using these procedures. If there is any deficiency, or if electrical performance is not within specifications, notify your Spectrian representative immediately.

Tools

The following tools are recommended to perform installation tasks.

• HP 436 Power meter

• Digital Volt Meter (DVM)

4.3 Ve rify system in st allati on

Before operating the MCPS4080, verify proper installation as described in the previous section.

1. Verify that there are no obstructions to airflow in the front or rear of the MCPS4080.

2. Ensure that the DC power supply at the site is functioning normally. DO NOT turn on the DC supply to the MCPS4080 at this time.

3. Ensure that the MCPS4080 is physically connected to an input RF signal source and terminated in an output load. Ensure that the RF signal level has been set properly. DO NOT turn on the RF signal source at this time.

MCPS4080 System Operation 19



System Start-Up

4. If used, verify that the MCPS4080 address is set correctly.

WARNING: The RF output of the MCPS4080 should be connected to a 50-ohm load before DC power is turned on. The load must be capable of dissipating at least 290 watts average power and 3,750 watts of peak power.

After mechanical and electrical installation tasks are complete, the MCPS4080 is ready for power-on check.

4.4 Power Up the MCPS4080

☛ ✎

Caution: Read and understand all of the following steps before taking any action.

Note: The MCPS4080 should be powered on and enabled before the RF input power is applied.

1. Switch on the DC input power to the MCPS4080. Measure the input voltage at the bus bar connections at the rear of the unit and verify it is 27VDC. Adjust the power supply if necessary.

Following the power-up self-test, the MCPS4080 AMM should be GREEN, indicating that the unit is functional and that in input voltage is between 24 and 28 VDC. If the does not light, turn off the DC input power and correct the power supply fault.

The ENABLE switch should be “ON”. The MCPS4080 RF modules will automatically be ENABLED. All four LEDs on each MCPA module should be GREEN.

POWER

LED is amber, red, or

LED

☛

To DISABLE an RF module, set the front panel ENABLE/DISABLE switch to DISABLE; the

2. Wait 5 minutes for the MCPS4080 to reach a stable operating temperature. DO NOT apply commercial traffic signal power during this time.

3. If the MCPS4080 is connected to a remote operations center via one of the rear panel interface connections, verify no alarms have been reported.

4. Verify that all MCPS4080 status LED indicators remain GREEN.

5. If any LED indicators are AMBER, then RF modules are disabled or there is a problem, which must be remedied before continuing. Refer to section 6, Troubleshooting.

Caution: Before applying RF input power to the MCPS4080, verify that the applied RF input power for a single channel and the sum of all channels is below the calculated maximum rated RF input.

ENABLE

LED will then be AMBER.

20 MCPS4080 Operations Manual



MCPS4080 System Monitoring

5 MCPS4080 System Mon itoring

5.1 Introduction

This section describes methods for monitoring the MCPS4080 amplifier system operation.

5.2 Monitoring the MCPS4080 System Operation

The MCPS4080 Amplifier Management Module (AMM) has a front panel RS-232 status port. This port provides the option to monitor the operation and status of the MCPS4080 using a laptop computer, if desired.

A LabView-based Graphical User Interface (GUI), which can run on Windows95, 98, or NT4.0-based laptop computers is available from Spectrian.

5.3 Alarm Definitions

Fault management may be accomplished by various means with the MCPS4080. The MCPS4080 includes alarm LEDs, an RS-232 diagnostics port, and an optional base station status/alarm interface. These LEDs may be used for visual diagnostics by on-site technicians. Refer to Section 5 for details on the MCPS4080 alarm and protection circuits.

5.3.1 Alarm classification

The MCPS4080 fault management subsystem classifies faults into three categories. In order of escalation, these are faults.

5.3.1.1 Minor Alarm

A minor problem exists, but the fault does not require a module to be taken out of service.

service attention is recommended.

service attention is required or the unit may take itself out of service.

5.3.1.2

Routine

Major Alarm

A major problem exists such that the MCPS4080 is not meeting all performance specifications, but the unit is not automatically disabled.

Urgent

minor

faults,

major

faults, and

critical

MCPS4080 System Operation 21



MCPS4080 System Monitoring

5.3.1.3 Major Alarm

A major failure or a condition exists that could result in damage. The MCPS4080 is automatically taken out of service.

Immediate

service attention is required.

5.3 .2 Alarm Responses

The fault management system automatically responds when a fault is detected. Responses vary in impact from alarm notification with no subsequent action (for minor faults) to alarm notification and shut-down (for critical faults). The hierarchy of responses is designed to keep the MCPS4080 in operation unless continued operation would result in damage to the unit. Under some fault conditions, the MCPS4080 continues to operate in a degraded state. The operator may choose to continue to operate in a degraded state, shed channels, or shut down the MCPS4080 until repairs can be completed.

5.3. 2.1 Automatic Alarm reset s

Critical Alarm

When a critical alarm occurs, the MCPS4080 will automatically be DISABLED (i.e., taken out of service) until the operator re-ENABLES the unit.

Majo r Alarm

When a major fault is detected, the MCPS4080 attempts to clear the fault by performing a reset. In most cases, the MCPS4080 will attempt to reset five times. If the alarm condition fails to clear after five attempts, the MCPS4080 remains in operation with the fault alarm set.

In the case of an over-temperature major alarm, the fault manager will attempt to clear the alarm one time only by resetting. If the fault condition does not clear, the alarm classification will escalate to critical (out-of-service), and the MCPS4080 will shut down and remain off-line until returned to service by the operator.

Al ar m Transient Supression

To minimize false alarms from transient anomalies, the fault management system is designed with built-in hysteresis and filtering. If the fault condition persists past the filter interval, the appropriate fault alarm is set.

5.3. 2.2 M anual Alarm resets

When a major Alarm is detected, the operator may choose from the following options:

• Take no action and allow the MCPS4080 to operate in a degraded state until

service can be performed.

• Shed input channels to reduce the power to the MCPS4080.

• Disable the RF Module using the front panel switch, diagnostic port, or

optional base station alarm and control interface

22 MCPS4080 Operations Manual



MCPS4080 System Monitoring

5.4 MCPS4080 Alarm Limits and Protection Circuits

The MCPS4080 series of multi-carrier power amplifiers has a wide range of alarm configurations available. These may be specified to meet the demands of specific applications. In addition, the MCPA modules have built-in protection circuits to prevent da mage from unintentional misuse. Module alarms ma y be summarized and reported to a BTS using a customized interface. This hierarchical system insures that Spectrian’s MCPS4080 series amplifier systems remain robust with a minimum of false alarms, but promptly report any real issues to the base station controller.

The default alarm limit settings and analog protection circuit operation for the MCPS4080 family of MCPA amplifier systems is summarized below. The information contained herein is provided specification limits must be negotiated between prospective customers and Spectrian. There are three levels of the alarm/protection hierarchy:

•

Analog Protection Circuits – Configured in hardware design to protect the MCPA.

•

MCPA Module Alarms – Most are software configurable for specific applications.

for reference only.

Guaranteed

•

Amplifier System Alarms – Summarizes MCPA and Alarm Management Module status.

In general, analog protection circuit limits are set by design, and may not be changed. MCPA alarm limits are software configurable, and may be tailored to meet customer alarm specifications. Individual MCPA alarms is not displayed on the module front panel, but they are accessible through Spectrian’s Graphical User Interface (GUI) software. System level alarms are summaries of the module alarm status (minor/major/critical), as well as the Amplifier Management Module (AMM) and the communication link between the modules and the AMM. The summary set-up is configurable using the amplifier GUI software.

5.4 . 1 MCPA Module Analog Protection Circuits

The MCPS4080 MCPA module design incorporates circuits to prevent MCPA module damage by common misuse conditions. The circuits react automatically to the conditions shown in Table 3 with the limits set as noted. These limits are not adjustable by software configuration.

Control Condition Latch

Input Overdrive > -2 dBm @ Input (configured for 55dB module gain) No Error Amp Overdrive > -15 dBm @ Carrier Cancellation Input No Over voltage Clamp Internal DC line is limited to 28V by linear regulation

up to 30V input

Circuit Breaker > 60 A current draw Yes

Table 3: Analog Protection Circuit

MCPS4080 System Operation 23



MCPS4080 System Monitoring

5.4 . 2 MCPA Module Alarms

The set points, delay, reset points, and latching conditions of all three types of alarms are software configurable. Some Minor alarm settings can be specified by the customer but must be agreed upon between the customer and Spectrian prior to installation or modification. Alarm limits for Major and Critical Alarms are fixed and can not be modified, insuring long term reliability of the MCPA module.

Type Indicator Condition Action / Response

No Alarm LED Green Normal operation None Major LED Amber System malfunctioning but operating (degraded

performance)

Table 4: Module Alarm Hierarchy

System Rese t afte r Dwe ll

Description GUI

Main Amp Base Te mp

Over/Under Voltage

IM Degradation LOP Adjustment

Load VSWR VSR >10:1 >4:1 N/A No N/A RF Overdrive OPR N/A >125W 2 sec Yes 150W Fan Failure FAN Low RPM

Input Current CKT N/A >60A >60A No Delay After 3 Failures N/A Gain Drop GAN N/A < -3 dB N/A 2 sec. No < -1 dB

Mnemonic

TMP 75°C

OVS/ UVS 22 to 24V 20 to 22V or

Minor Alarm Set Point

limit rail

(≤50% rated)

Major Alarm Set Point

> 82 °C > 90 °C, >120

28 to 30V N/A N/A No N/A

1 Fan Failed

Major Alarm (Module Shutdown)

C, no dwell

<20V or >30V 5 sec No 24V or 28V

2 Fans Failed None No N/A

Critical Alarm Dwell Time

10 min. No

Critical Alarm Latch

Table 5: Default Alarm Descriptions and Settings

5.4.3 MCPA System Alarms

A multi-module MCPA system will have an Amplifier Management Module (AMM) that summarizes the status of all modules and reports this information to the base transceiver station (BTS). The format of this information is usually customized for specific customers. Options for physical layer customization include:

Hysteresis Reset Point

70 °C

•

Parallel TTL Interface – Summary bits for individual module status.

•

Serial Interface (RS-232, RS-422) – Customized strings sent to BTS interface.

•

Form-C Relay Contacts – Wired directly into BTS.

The customer usually specifies messaging layer customization. In addition Spectrian does maintain an internal standard for serial messaging. System status is generally a combination of the module status. The customer also specifies this. An example of a system alarm hierarchy might be as noted in the table below.

24 MCPS4080 Operations Manual



MCPS4080 System Monitoring

MCPA Alarm Condition

Minor At least one module reporting a minor alarm OR Major At least 3 modules reporting a critical alarm AND

Amplifier System Status Summary Logic

Table 6: T ypica l MCP S Syste m Alarm Hierarchy

MCPS4080 System Operation 25



Troubleshooting and Maintenance

6 T roubleshooting and

Maintenance

6.1 Introduction

The following chapter provides basic information about diagnosis of problems with the MCPS4080. Please read the following safety information prior to beginning diagnosis and repair actions.

✎

Warning: Troubleshooting and repairs should be performed only by trained and qualified personnel or at authorized Spectrian repair depots. Observe all safety warnings and use the required safety equipment when performing the tasks described in this chapter.

Note: Before shipment, theMCPS4080 was inspected and found free of mechanical and electrical defects. The electrical performance of theMCPS4080 should be verified using these procedures. If there is any deficiency, or if electrical performance is not within specifications, notify your Spectrian representative immediately.

Tools

The following tools are recommended to perform system service tasks.

• HP 436 Power Meter

• Digital Volt Meter (DVM)

6.1.1 Safety Information

To avoid injury, installers, technicians, and maintenance personnel must follow Spectrian's recommended procedures and observe all safety precautions.

Warning: The MCPS4080 transmits high power at radio frequencies. Severe radiation burns can occur if recommended safety precautions are not strictly observed.

26 MCPS4080 Operations Manual

Warning: Except where specifically indicated, always disconnect RF input power and DC input power to the MCPS4080 before performing procedures that do not require power. For those procedures that do require power, be extremely



cautious in handling test leads, tools, and equipment near live circuits. Never reach into an enclosure for the purpose of servicing or adjusting live equipment.

6.2 Troubleshooting

Refer to section 5.3 for a definition of alarm types and the significance of those alarm types.

6.2 .1 Using LED Indicators

Each MCPS4080 RF Module is equipped with four LED indicators mounted on the front panel. The system Alarm Management Module has two LED indictors mounted on the front panel. These indicators provide useful status and diagnostic information to operators and technicians.

Troubleshooting and Maintenance

Module

LED’s

POWER

ENABLED

STATUS

FAN

AMM LED’s Green Amber Red

DC POWER

STATUS

Green Amber

Voltage OK, 26 VDC <22 V or >30V; RF shuts down

Enabled Disabled

OK Major Alarm OK Fan Failure

Voltage OK, 26 VDC 22-24 V or 28-29V;

No Faults N/A System Fault Exists

6.2 .2 Using the Diagnostic Port Outpu t

Use of the Diagnostic Port is described in the release notes with the interface software distribution.

6.2.3 Using Remote Alarm Monitoring

The MCPS4080 can include an optional alarm or control interface to base station monitoring systems. These systems provide a serial interface to transmit status codes to a remote host computer and receive a limited set of commands from the host. For systems with such an interface, the interface is described in detail in the specifications Appendix, A3.

syste m has degraded

performance

<22 V or >29V;

system shuts down

✎

Note: The MCPS4080 fault management system and its associated alarms and fault indicators operate independently of the serial interface.

MCPS4080 System Operation 27



Troubleshooting and Maintenance

6.3 Periodic Maintenance

6.3.1 Dust Removal

Keep the air inputs and outputs of the MCPS4080 free of dust or other material that could block cooling airflow.

6.3.2 Visual Inspection

Periodically visually inspect the MCPS4080 to ensure that all indicators are functioning normally and that all system interfaces are properly connected.

6.4 Module Replacement

The RF modules of the MCPS4080 are hot-swappable field replaceable units which can be removed and inserted while the system is online without affecting the operation of the other units in the system.

6.4 .1 Repl acing an RF M odule

☛

WARNING: The RF Module is very heavy, 50 lbs (22.7 kg). Get assistance if necessary.

Caution: Provide bottom support when removing an MCPA module to avoid damage to the fan housing.

1. Disable the RF Module being replaced by switching the front panel switch to DISAB LE. The

2. Undo the RF Module front panel fastener.

3. Slide the RF Module out of the shelf subassembly.

4. Place the RF module in a safe, static-free location.

5. Set the ENABLE switch on the replacement module to the DISABLE position.

6. Insert the replacement RF Module.

7. Fasten the RF Module front panel fastener.

8. Set the ENABLE switch on the replacement module to the ENABLE position.

9. The RF Module will automatically self-test and then ENABLE; the LED will then be GREEN.

6.4.2 Replacing an AMM

ENABLE

LED will be AMBER.

ENABLE

1. Turn off the DC power to the MCPS4080.

2. Undo the AMM front panel fasteners.

3. Slide the AMM module out of the shelf subassembly.

4. Place the AMM in a safe, static-free location.

28 MCPS4080 Operations Manual



Troubleshooting and Maintenance

5. Slide the new AMM into the shelf sub-assembly.

6. Fasten the AMM front panel fastener.

7. Turn on the DC power to the MCPS4080. The system will perform a powerup self-test automatically.

8. The

POWER

LED will be GREEN.

6.4.3 Replacing shelf subassembly

! !

☛

Warning: Turn off the DC voltage and RF power prior to replacing an MCPS4080.

Warning: Remove all DC and RF connectors prior to removing the MCPS4080 from the rack.

Caution: Do not attempt to move an MCPS system with modules installed.

1. Remove the RF Modules’ front panel retaining screws.

2. Remove the RF modules from the rack.

WARNING: The RF Module is very heavy (50 lbs / 22.7 kg). Get assistance if necessary.

3. Set each RF Module aside in a clean, safe place, free of electrostatic charges.

4. Remove the rack retaining screws. Grasp the front panel with both hands and pull the MCPS4080 straight out from the rack.

5. Set the disconnected MCPS4080 aside in a clean, safe place, free of electrostatic charges.

6. Remove the replacement MCPS4080 from its static-protective packaging.

✎

Note: You may wish to record the serial number on your repair record before instal lin g th e modu l e.

7. Follow the installation and operation instructions in Sections 3 and 4 to place the unit back in service.

6.5 Module Service

6.5 .1 Replacing MCPS4080 Fan Modules

☛

MCPS4080 System Operation 29

WARNING: The RF Module is very heavy (50 lbs / 22.7 kg). Get assistance if necessary.

Caution: Provide bottom support when removing an MCPA module to avoid damage to the fan housing.

1. Disable the RF module with the failed fan.

2. Remove the RF module with the failed fan from the rack.

3. Place the RF module on a clean, static-free work surface.

4. Disconnect the fan power cable.



Troubleshooting and Maintenance

5. Unfasten the 4x captive retaining nuts & remove the fan module.

6. Fasten replacement module in place using the 4x captive nuts.

7. Connect the fan power cable.

8. Replace the RF module in the rack.

9. Enable the module. Following the automatic power-up reset sequence, the

FAN

indicator LED should be GREEN.

30 MCPS4080 Operations Manual



Appendix A1 Spectrian, Inc. Offices

Appendix A1 Spectr ian, I nc. Offices

Spectrian Headquarters

350 West Java Drive Sunnyvale, Calif. 94089

Ph: 408-745-5400 Fax: 408-541-0263

Web: www.spectrian.com

Spect rian, Asia Office

4TH FL., Ensung Building, 601-18, Yoksam-Dong, Kangnam-Ku, Seoul, 80-080, Korea

Ph: 822-545-6441 Fax: 822-545-6062

Centralized customer service:

For customer service support please direct all requests, questions, comments, and inquires to cs@spectrian.com or mail to:

Spectrian Customer Service Department 350 West Java Drive

Sunnyvale, Calif. 94089 Ph: 800-793-7222

Fax: 408-541-0263 Technical Support Line Ph: 408-745-5416

MCPS4080 System Operation 31



Appendix A2 Major Electrical Specifications

Appendix A2 Major Electrical Specifi cations

Major Equipment Specifications for the MCPS4080 Amplifier System

Electrical Specifications Specification @ 25ºC

Frequency Range 1930 - 1990 MHz Average Power¹ into 50 Ohms 80W (49.0 dBm) typical,

100W (50.0 dBm) max.

Intermodulation Distortion (IMD) -63 dBc with TDMA IS-136, CDMA Adjacent Channel Power

@ 1960 MHz, 100W Output < -60 dBc, 1.98 MHz offset, 30 KHz res bandwidth

Receive Band Noise 60 dBc Carrier Spacing (TDMA) 60 KHz min., 20 MHz max. Power Output Stability for Single Frequency ± 0.5 dB under nominal conditions Operating Bandwidth up to 20 MHz Gain Factory set, 45 to 55 dB, 85 dB with optional

Gain Flatness vs. Frequency ± 0.5 dB (over all temps) Gain Variation over Temp @ Any Inband Frequency ± 1 dB Forward Power Sample Port Coupling -50 dB typ. Input/Output Port Return Loss -15 dB min. Second/Third and Greater Harmonic Output -45 dBc / -70 dBc DC Input Voltage Range 26 to 28 DC Input Current @ 27

VDC

± 1 VDC 45A Max @ 80 Watts

< -45 dBc, 885 KHz offset, 30 KHz res bandwidth

<-13 dBm, 2.25 MHz offset, 1MHz res bandwidth

preamp

VDC

Power levels at the output of the system combiner will vary depending on the configuration.

Measured at the RF module output connector and in accordance with IS-97.

32 MCPS4080 Operations Manual



Appendix A3 Major Mechanical Specifications

Appendix A3 Major Mechan ical Specifi cations

Mechanical Specifications

Operating/Storage Temperatures 0ºC to 50ºC/-40ºC to 85ºC Size, 4 module shelf (D x W x H)

(Excludes mounting ears and handles). 19.7 x 19.7 x 21.0 in. max

(500 x 500 x 533 mm max.)

Size, 1 module shelf 19.7 x 21.7 x 5.25 in. max (Excludes mounting ears and handles). (500 x 550 x 133. mm max.)

Weight, 4 module shelf (Empty) Installed: approx. 45 lbs (20 kg)

Shipping: approx. 60 lbs max. (27 kg)

Weight, 1 module shelf (Empty) Installed: approx. 22 lbs (9 kg)

Shipping: approx. 29 lbs max. (13 kg)

Weight, 1 module Installed: approx. 50 lbs max. (22.7 kg)

Shipping: approx. 65 lbs max. (29.5 kg)

Connectors RF Input(s): SMA (F)

RF Output(s): N (F) RF Output Sample Port: SMA (F) DC Inputs: 10-32 threaded lugs DC Ground: 10-32 threaded lugs Maintenance Port: RS232 Alarms Port: RS422 (standard)

RS232 (Front panel port) pinout: Pin 1 GND

Pin 2 TX Pin 3 RX Pin 4 N/C Pin 5 GND Pin 6 N/C Pin 7 RTS Pin 8 CTS Pin 9 N/C

Indicators AMM: DC On, Alarm LEDs

MCPA Modules: DC On, Enable, Alarm, Fan LEDs

MCPS4080 System Operation 33

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Appendix A3 Major Mechanical Specifications

Mec hanical Outlines

MCPS4080 Shelf Configuration

34 MCPS4080 Operations Manual

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Appendix A3 Major Mechanical Specifications

MCPA Module for MCPS4080 Family

MCPS4080 System Operation 35

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Appendix A4: MCPS4080 System Checkout

MCPS System Checkout

In some cases, it may be desirable to perform a system checkout prior to installation to insure proper operation. The following procedure is included here only for reference. Accurate specification verification is not guaranteed when using this procedure.

Equipment Require d

•

HP4432 Signal Generator

•

Sorenson DHP40-250 DC Powe r Suppl y

•

HP8561A Spectrum Analyzer

•

HP436 Power Meter

•

HP8481A Power Head

•

750W, 30 dB Attenuator

•

Digital Volt Meter (DVM)

Setup Proce dur e

1. Connect Sorenson DHP-40-250 DC power supply to DC input as outlined in Section 3.4.

2. Connect HP4432 CDMA Signal Generator to RF input. Set RF level to – 30 dBm. Set I/Q input to internal CDMA generator, IS-97 with EQ, 9 Walsh Codes.

3. Connect Attenuator to RF Output

4. Connect HP8481A Power Sensor to Attenuator output.

5. Connect HP8561A Spectrum Analyzer to Sample Port Output. Set ATTEN=10 dB, RBW=30kHz, VBW=10kHz, Vid. Avg.=100, SPAN=10MHz.

36 MCPS4080 Operations Manual

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Appendix A4: MCPS4080 System Checkout

Perform ance Checkout Procedur e

1. Set current limit on Sorenson power supply to appropriate level as listed in Table 2.

2. Set DC voltage to 27 ± 1V.

3. With no RF applied, verify that idle current is approximately 13A x number of MCPA RF mod ules.

4. Apply RF signal, and slowly increase power to maximum rated power as listed in Appendix A2.

5. Verify that the total DC current is approximately that listed in Table 2.

6. Perform ACPR measurement. Verify that mask specification exceeds specification listed in Appendix A2.

MCPS4080 System Operation 37

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INDEX

7 INDEX

acoustic treatment 8 airborne dust 8 air-conditioning 8 alarm configurations 23 alarm connection 9 Ala rm Definiti ons 21 alarm output

connection 18 alarm/protection hierarchy 23 ambient noise 8 AMM 6

installation 16

replacement 28 Amplifier Management Module 6 Amplifier Management Unit 5 Amplifier System Alarms 23 AMPS

modulation 3 AMU 5 Analog Protection Circuit

summa r y tab l e 23 Analog Protection Circuits 23 average power

rated 32

Block Diagram

RF module 4 building codes 7 bussed power option

DC power 17 cabinet clearance 8 cancellation 4 Caution

definition 2 CDMA 3 CDPD 3 chassis ground 9

checking 16

connection 16

combiner

active 6

combiner losses

output 6

combustible materials

floor covering 7 composite power 11 cooling air 15

faults

critical

definition 21 customer service

contact information 31 DC input voltage range 32 DC power supply

requirements 9 DC wire

connecting 17 default alarm

settings 23 degraded operation 22 derate

for altitude 8 DISABLE

RF module 20 dust

removal 28

error loop

error signal 4 ESD protective wrapping 13 fan

replacement 29 feed-forward 4 fire codes 7 fire-extinguishing

in site 8 floor covering 7 form C 9 frequency 32

38 MCPS4080 Operations Manual

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INDEX

Graphical User Interface 3, 21, 23 gr ou nd ha l o

site 8

grounding system

site 8

guides

module alignment 16

hot air

exhaust 8

hot-swappable

RF modules 28

input drive level

worksheet 10

installation

verify 19

installations

intended 7

Introduction

IS-136 TDMA 3 IS-95 3 lighting

working area 7 lightning arrestors 8 lightning protection 8

main loop

faults

major

definition 21 MCPS address

setting 18 Mechanical Outlines 34

faults

minor

definition 21 Module Alarm Hierarchy

table 24 module alarms

summarized 23 Module Alarms 23 Module Replacement 28 multimodule MCPA 25 Note

definition 2 out of service

alarm 22 over-temperature

alarm reset 22 packing lists 12 Periodic Maintenance 28 physical layer

alarms 25 pinout

RS232 33 planning

site 7 positive supply

connecting 17 po we r ing up 19 power-up self-test 20 problem

diagnosis 26 protection circuits

built-in 23

radio parameters 10 recommended power service 9 Replacing MCPS4080 Fan Modules 29 required current 9 return shipment 13 return wire

connecting 17 RF cabling

integrity 17 RF input drive

setting 11 RF load

test 20 RF module

disabling 20

installation 16 RF output

connecting 17 safety equipment

installation 14 self-reset

automatic 22 shipping containers

opening 13 shipping damage 12 shipping documents 12 side support rails 15

MCPS4080 System Operation 39

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INDEX

smoke detectors 8 summarized

alarms 23 uncrating 12 unrestricted airflow 8

vibration 8 Warning

definition 2 weight 7 wrist strap 13, 15

40 MCPS4080 Operations Manual

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Powerwave Technologies MCPA4080 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual