Powerwave Technologies MCPA4080 PCS Multicarrier Ultra-Linear Power Amplifier User Manual revised

Powerwave Technologies, Inc. PCS Multicarrier Ultra-Linear Power Amplifier revised

revised user manual

SPECTRIANMCPS4080 SERIESMCPAMultiCarrier Amplifier SystemsINSTALLATION & OPERATIONMANUALDecember 2001Rev 1.5
Introductionii MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.2001 Spectrian Corporation. This document containsproprietary information of Spectrian Corporation . No part of thismanual may be copied or disclosed without written authorizationof Spectrian Corporation. All rights reserved.
IntroductionMCPS4080 System Operation iii2001 Spectrian Corporation. All rights reserved.TABLE OF CONTENTS1 Introduction....................................................................................................................................11.1 About this Manual...................................................................................................................11.2 Safety Information...................................................................................................................21.3 Introduction to the MCPS4080 Family...................................................................................31.3.1 MCPA Module Functional Description ..........................................................................41.3.2 MCPS4080 Amplifier System.........................................................................................52 Planning and Preparation.................................................................................................................72.1 Installation Planning................................................................................................................72.2 Site Planning Guide.................................................................................................................72.2.1 Site Considerations..........................................................................................................72.2.2 Rack Installation Considerations.....................................................................................82.2.3 Cable Connections...........................................................................................................92.3 Determine the required RF input power................................................................................102.3.1 Set RF input drive power for each channel...................................................................112.4 Prepare for Installation..........................................................................................................122.4.1 Inventory Received Equipment.....................................................................................122.4.2 Unpack Received Equipment........................................................................................122.4.3 Repackaging for Return Shipment................................................................................133 MCPS4080 Installation .................................................................................................................143.1 Introduction...........................................................................................................................143.2 Task safety equipment, tools and materials ..........................................................................143.3 Rack Installation....................................................................................................................153.3.1 Install Shelf Subassembly .............................................................................................153.3.2 Install Modules in Shelf ................................................................................................163.4 Cable and Wire Connections.................................................................................................163.4.1 Connect Chassis Ground Wire......................................................................................163.4.2 Connect DC Input Power Cables ..................................................................................163.4.3 Connect RF Output and Input Cables ...........................................................................173.4.4 Connect Alarm Interface Cables ...................................................................................183.5 Finish Installation..................................................................................................................183.5.1 Set the MCPS4080 unit address....................................................................................183.5.2 Verify Installation..........................................................................................................184 System Start-Up ............................................................................................................................194.1 Introduction...........................................................................................................................194.2 Safety Information and Tools................................................................................................194.3 Verify system installation......................................................................................................19
Introductioniv MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.4.4 Power Up the MCPS4080......................................................................................................205 MCPS4080 System Monitoring.....................................................................................................215.1 Introduction............................................................................................................................215.2 Monitoring the MCPS4080 System Operation......................................................................215.3 Alarm Definitions ..................................................................................................................215.3.1 Alarm classification.......................................................................................................215.3.2 Alarm Responses ...........................................................................................................225.4 MCPS4080 Alarm Limits and Protection Circuits ................................................................235.4.1 MCPA Module Analog Protection Circuits...................................................................235.4.2 MCPA Module Alarms..................................................................................................245.4.3 MCPA System Alarms ..................................................................................................246 Troubleshooting and Maintenance ................................................................................................266.1 Introduction............................................................................................................................266.1.1 Safety Information.........................................................................................................266.2 Troubleshooting.....................................................................................................................276.2.1 Using LED Indicators....................................................................................................276.2.2 Using the Diagnostic Port Output..................................................................................276.2.3 Using Remote Alarm Monitoring..................................................................................276.3 Periodic Maintenance ............................................................................................................286.3.1 Dust Removal ................................................................................................................286.3.2 Visual Inspection...........................................................................................................286.4 Module Replacement.............................................................................................................286.4.1 Replacing an RF Module...............................................................................................286.4.2 Replacing an AMM .......................................................................................................286.4.3 Replacing shelf subassembly.........................................................................................296.5 Module Service......................................................................................................................296.5.1 Replacing MCPS4080 Fan Modules .............................................................................29Appendix A1 Spectrian, Inc. Offices.....................................................................................................31Appendix A2 Major Electrical Specifications.......................................................................................32Appendix A3 Major Mechanical Specifications ...................................................................................33Appendix A4: MCPS4080 System Checkout......................................................................................36MCPS System Checkout................................................................................................................36Equipment Required......................................................................................................................36Setup Procedure.............................................................................................................................36Performance Checkout Procedure .................................................................................................37
IntroductionMCPS4080 Operations Manual 12001 Spectrian Corporation. All rights reserved.1 IntroductionChapter 1 introduces the MCPS4080 Series of Multi Carrier Power Amplifier(MCPA) Systems. It describes structure of this manual and introduces the differentMCPS4080 Series amplifiers.1.1 About this ManualThe following manual describes how to install, operate, and maintain theMCPS4080 series of amplifiers. It is arranged into the following sections.Section 1, Introduction, introduces the systems in the MCPS4080 family and theirmain features and describes how the system documentation is organized.Section 2, Preparation and Planning, contains information helpful for planningthe installation and assuring proper preparation for the installation.Section 3, Installation Instructions, describes how to properly install theMCPS4080 amplifier system.Section 4, System Start-up, has procedures for power-up and initial check out ofthe MCPS4080 amplifier system.Section 5, System Monitoring presents information on basic and optional methodsof MCPS4080 system monitoring.Section 6, Troubleshooting and Maintenance, describes how to diagnose faultsusing the indicator LED’s and status/alarm messages. Section 6 also hasinstructions for routine maintenance and for installation of new field-replaceablemodules in the MCPS4080 amplifierAppendix A1, Spectrian, Inc. Company Offices, contains company locations andother contact information.Appendix A2, Electrical Specifications, details the electrical specifications met bythe MCPS4080 amplifier systems, including the Connector Pin-outs and InterfaceProtocols used in the front panel diagnostic port and the optional base stationalarm and control interfaces.Appendix A3, Mechanical Specifications, includes mechanical and environmentalspecifications met by the MCPS4080 amplifier systems.Appendix A4, MCPS4080 System Check Out, has the procedure for a quickoperational check of the MCPS4080 amplifier system.
Introduction2MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.Throughout this manual, notes, cautions and warnings are used with thisconvention:✎ Note: Sub-optimal or out-of-specification performance will result from notfollowing the instructions presented in ‘notes’.☛ Caution: Follow ‘caution’ notes to avoid possible damage to equipment.! Warning: Injury to personnel, equipment fire, or other hazardous situationswill result from not properly following ‘warning’ instructions.1.1.1 Equipment ChangesSpectrian Corporation reserves the right to make minor changes to the equipment,including but not necessarily limited to component substitution and circuitrychanges. Modifications that impact this manual may subsequently be incorporatedin a later revision of this manual.1.2 Safety InformationThe MCPS4080 has been designed for maximum safety and reliability when it isinstalled, used, and maintained in accordance with the procedures and instructionsin this manual by trained and qualified technicians. To ensure the safe andcompliant operation of the system, always follow the safety and operationalrecommendations in this manual.! WARNING: The MCPS4080 produces high levels of RF radiation. Severeradiation burns can occur if recommended safety precautions are not strictlyobserved.-- Do not operate exposed circuitry or radiating elements with personnel in closeproximity to the radiating source. Always replace covers and shields duringoperation.-- Persons with cardiac pacemakers should avoid exposure to RF radiatingelements.-- Exposing the human eye to high levels of radio-frequency radiation mayresult in the formation of cataracts.! WARNING: Do not install or operate theMCPS4080 amplifier in the presenceof flammable gases or fumes.! Each RF Module and the shelf subassembly weigh 22.7 kgs (50 lbs); whencrated for shipping an MCPS4080 system can weigh in excess of 131.5 kgs (290lbs) and be unbalanced. To avoid injuries or damage, use care and obtainassistance when lifting MCPS4080 components.☛ Always use the recommended safety equipment.☛ Please read and understand all instructions and warnings before handling anMCPS4080.☛ MCPS4080 amplifiers may only be installed in restricted access areas (dedicatedequipment 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.
IntroductionMCPS4080 System Operation 32001 Spectrian Corporation. All rights reserved.1.3 Introduction to the MCPS4080 FamilyThe MCPS4080 is a modular, ultra-linear PCS-frequency amplifier systemproviding up to 290 Watts (total) of output power. Designed for maximumflexibility and reliability, the MCPS4080 can increase the range and capacity ofnew or existing base stations.Modulation FormatsThe 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 themaximum rated system output power.ModularityThe MCPS4080 family is designed for operation with 1 to 4 amplifier modules,each providing up to 100 Watts of RF output power (exclusive of combininglosses).Mounting ConfigurationsThe MCPS4080 amplifier systems are available in a variety of configurations.Mounting kits are available for installation in 23-inch, 600mm, 24-inch, or 25-inchequipment racks. Multi-module shelves are 12 RU (21 in.) high. Single moduleshelves are 3 RU (5.25 in.) high.Peripheral ProductsSpectrian offers optional products to assist in base station configuration and set-up. Among these products are multi-port RF combiners, bandpass filters,preamplifiers, and AC/DC power rectifiers. Please consult with the factory orsales for more information on these peripheral products.RF InterfacesThe Spectrian MCPS4080 has a single RF input for combined input signals, and asingle RF output to the transmit filter. There is also a single module configurationwith three input connectors combined within the amplifier and a single outputconnector.Alarms and ControlThe MCPS4080 system provides visual status information through front-panelLED indicators. Status information is also transmitted via a front-panel RS-232port using Spectrian’s optional Graphical User Interface program.The MCPS4080 can also be optionally equipped with additional alarm and controlinterfaces, including dry-contact or TTL alarm connections RS-232 or RS-422interfaces to network operations and administration systems.The MCPS4080 is designed to enable system maintenance without removing theamplifier from service. In multi-module (high power) systems, the RF modulescan be hot-swapped during operation without affecting calls in process. TheAmplifier Management Module (AMM) can be easily replaced in the field. Theamplifier modules are designed so the cooling fans can be replaced in the field by
Introduction4MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.qualified service technicians, greatly reducing service shipping costs and turn-around time.1.3.1 MCPA Module Functional DescriptionTo achieve the high level of linearity required to support multiple PCS carriers atthe minimum cost, the RF modules in the MCPS4080 use a single loop feed-forward correction architecture with two amplification paths – the main path,containing the main amplifier, and the error path, containing the error amplifier.The combination of these two paths in a feed forward loop configuration results ina signal in which the distortion products have been cancelled, enabling highlylinear operation of the amplifier.Figure 1: RF Module Functional Block Diagram1.3.1.1 Main LoopThe output of the main amplifier contains both the desired signal and Inter-modulation Distortion (IMD) products. This signal is coupled off and combinedwith the undistorted input signal coupled off the preamplifier. The relative delayand phases of these signals are adjusted so they combine to cancel out the desiredsignal, creating an error signal composed of only the main amplifier IMDproducts. The cancellation process is controlled by a Digital Signal Processor,which insures optimum carrier cancellation over all environmental conditions.1.3.1.2 Error LoopThe error signal is amplified in the error loop. The amplified error signal is thencombined with the output of the main amplifier containing both the desired signalMainPathPhase/AmplitudeControl Main Amp Delay FilterOutput ModulePilotGenerator /RecieverAmplifierManangementUnitCarrierCancellationError PathΣτPreamplifierDelayLineError AmpRF InputRF OutputPhase/AmplitudeControl
IntroductionMCPS4080 System Operation 52001 Spectrian Corporation. All rights reserved.and distortion products such that the distortion products cancel. The error loopprovides 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 ManagementThe Amplifier Management Unit (AMU) monitors and controls performance ofthe various subassemblies within the RF module. The AMU provides operatingstatus information via front panel LEDs. Within a multi-module system, the AMUprovides status to the MCPS4080 AMM.1.3.2 MCPS4080 Amplifier SystemA fully-equipped MCPS4080 consists of a rack-mounted shelf containing up tofour RF modules. Multi-module systems contain an Alarm Management Module,and an internal divider/ combiner. A block diagram of the system is shown inFigure 2.Figure 2 System Block Diagram2÷÷÷÷100 W MCPAModules341Alarm ManagementModuleSplitterBasestation InterfaceRS-422 or RS-485ΣΣΣΣCombinerRFInput RFOutputStatus PortRS-232
Introduction6MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.The standard MCPS4080 configurations are summarized in Table 1. Pleaseconsult the factory or Spectrian sales for configurations not listed here.Power Dimensions(W x D x H)Comments80-100W 23” x 20” x 3 RU Single module configuration in 23 in. housing145W to 290 W 21” x 20” x 8 RU 2 to 4 modules combined in 21 in. rackconfigurationTable 1: MCPS4080 System ConfigurationsMCPA modulesThe RF modules are ultra-linear amplifiers optimized for high power amplificationof 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 ofeach module by approximately 10%. The RF module has been discussed insection 1.2.1 The end user is responsible for creating a frequency plan and powerallocation, which ensures that in no case the peak output power of a base stationtransmitter exceeds 100 watts.Amplifier Management ModuleThe Amplifier Management Module (AMM) contains the system control andalarm management logic and the interface to external operation and controlsystems.Divider/CombinerThe divider/combiner used in multi-module systems allows the RF modules tofunction as a single system. The combiner has an active architecture, whichautomatically reconfigures to minimize combining losses if an RF module shouldfail.
Planning and PreparationMCPS4080 System Operation 72001 Spectrian Corporation. All rights reserved.2 Planning and Preparation2.1 Installation PlanningIt is important to ensure proper planning and site preparation is complete prior tobeginning the installation of the MCPS4080. The following sections describeinstallation considerations and the information required before beginning theinstallation procedure. Spectrian Applications Engineering is always available toassist with planning for the installation of the MCPS4080.2.2 Site Planning GuideFor each MCPS4080 cell site installation, there must be a Site Planning or SiteEngineering guide giving the detailed information on the site considerations, rackinstallation, cable connections, and Radio Parameters.✎ Note: Local building and fire codes govern the manner in which some sitepreparation and installation tasks are performed. Spectrian recommends thatyou consult your local building inspector or a licensed engineer to ensure thatthe site installation conforms to local building codes.2.2.1 Site ConsiderationsIntended InstallationsThe MCPS4080 system is intended for installation only in restricted access areas(dedicated equipment rooms, equipment closets, environmental shelters, or thelike) in accordance with Articles 110-16, -17, and -18 of the National ElectricalCode, ANSI/NFPA No. 70.WeightThe MCPS4080 shelf and each RF module weigh approximately 50 pounds (22.7kg); the fully equipped system weighs 250 pounds (113.3 kg). The system mustbe installed, using the appropriate mounting kit, into a rack capable of supportingthe unit, and located on a floor or surface capable of supporting the combinedweight of the rack, the MCPS4080, and the installer or technician.Floor CoveringIf you intend to use a floor covering under the MCPS4080, avoid combustiblematerials, industrial carpeting, and materials that will permit generation ofelectrostatic charges.IlluminationThe MCPS4080 is designed to be installed and serviced under normal workroomlighting. During installation, room lighting must be bright enough to allowreading instructions and inspection of modules, but not so bright as to interfere
Planning and Preparation8MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.with viewing the status LED indicators on the front panel. The MCPS4080 shouldbe oriented or shielded so that direct sunlight does not fall upon the front panel.Fire ProtectionSpectrian recommends that the MCPS4080 installation site be equipped withsmoke detectors and an automatic fire-extinguishing system. In addition, forpersonnel safety, the site should be equipped with a portable halon or CO2 fireextinguisher.AltitudeWhen installing the MCPS4080 above 5000 ft (1542 m), derate the maximumoperating temperature by 2° C per 1000 ft (304 m) above 5000 ft.VentilationThe MCPS4080 requires unrestricted airflow around the MCPS4080. The sitemust be ventilated or air-conditioned so that ambient air does not exceed 50°Celsius (122° F).Ambient air qualityThe MCPS4080 should be installed in a location that is free of airborne dust andtoxic or corrosive fumes.Vibration and NoiseThe MCPS4080 tolerates moderate levels of vibration and ambient noise. TheMCPS4080 should not be installed in a location subject to mechanical shocks orvibrations conducted from nearby mechanical equipment. The MCPS4080generates fan noise below 65 dBa during operation and no additional acoustictreatment of the site is needed.Lightning ProtectionSpectrian recommends that all power, RF, and signal lines that connect to theMCPS4080 be protected by approved lightning arrestors. Your local fire or safetycodes will determine the type of lightning protection required.GroundingSpectrian recommends that the MCPS4080 and entire equipment rack be groundedwith an engineered grounding system, including ground halo and ground rods.2.2.2 Rack Installation ConsiderationsRack SpaceMulti-module MCPS4080 systems require 12U of rack space in a 21” rack.Optional mounting hardware for other rack sizes is also available. When used, theoptional preamplifier requires an additional 2U above the shelf. Single moduleshelves require 3U of rack space.ClearanceDuring operation, the MCPS4080 requires front cabinet clearance for unrestrictedcooling air input, plus a minimum of 4 inches (102mm) behind the MCPS4080 toexhaust hot air. Some additional rear clearance is desirable to accommodate routingthe RF input and output cables and the DC power cables to their connections on therear of the unit.
Planning and PreparationMCPS4080 System Operation 92001 Spectrian Corporation. All rights reserved.2.2.3 Cable ConnectionsDC Power SupplyThe MCPS4080 requires customer-supplied connections to the site +27 VDCpower supply. The MCPS4080 is normally connected to the power supply with aseparate connection for each RF module; a single connection to each shelf is alsopossible using the optional shelf power bus. Table 2 shows the required currentand recommended power service for MCPS4080 systems with the indicatednumber of active amplifier modules installed in a system shelf.# RFModules RF OutputPower I(Max),27 VDC Recommended Service180W (Typical)100W (MAX)45 Amps 2 wires (2/module), #6AWG, #10 lugs1 ea. 60A Circuit Breaker2145W Typical 90 Amps 4 wires (2/module), #6AWG, #10 lugs2 ea. 60A Circuit Breaker3220W Typical 135 Amps 6 wires (2/module), #6AWG, #10 lugs3 ea. 60A Circuit Breaker4290W Typical 180 Amps 8 wires (2/module), #6AWG, #10 lugs4 ea. 60A Circuit BreakerTable 3: Individual Power Connections to each RF ModuleSingle Bussed ConnectionWhen using the bussed connection option, the service should be sized for a fullyequipped shelf. This will provide adequate service with capacity for futureexpansion.Recommended Service: 2 Wires, #2AWG, ¼”narrow tongue lug (T&B 55116 orequivalent); 1 ea. 240A Circuit Breaker.Chassis Ground WireThe MCPS4080 shelf requires a customer-supplied chassis ground connection using#8AWG with a ¼” ring lug.RF Input and Output CablesThe MCPS4080 requires a single customer-supplied SMA male RF input cableand a single customer-supplied male type-N RF output cable. The RF output cablemust be rated to properly handle the MCPS4080 output power. The femaleconnectors are on the rear of the MCPS4080 shelf. Spectrian offers optional RFcables for use in connecting the MCPS4080 amplifier.Alarm Interface CablesThe MCPS4080 requires customer-supplied interface cables to the system alarminterfaces. The standard system has screw terminal connections to form C-relayalarm contacts; optional RS 422 serial connections are also available. The alarmconnection options for the MCPS4080 are listed in Appendix A3.
Planning and Preparation10 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.Radio ParametersTo set up the MCPS4080, the installer must know the following radio parametersfor 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 GainInstallation EquipmentRefer to the Tools and Materials listing in the following sections for the requiredMCPS4080 installation and test supplies.2.3 Determine the required RF input powerBefore applying RF input power to the MCPS4080, determine the input drive leveland output power needed for each channel being amplified by using the RF DrivePower Worksheet, shown below.Once the required RF input power for each channel is determined, continue to thenext step, setting the RF input drive power.
Planning and PreparationMCPS4080 System Operation 112001 Spectrian Corporation. All rights reserved.RF Drive Power WorksheetA) Total output power (POUT) required = W dBmB) Determine total output required for each fully loadedCDMA Frequency Assignment (FA): # of FA’s =total power per FA =total CDMA power (PCDMA) =Total available analog power (PAN ) =(PAN = POUT – PCDMA)WD) Total # of channels, including setup (#ch) =E) Maximum per channel output power (PAN/ch) = (PAN/ch = PAN/# of channels) WdBmF) System Gain (Gain) * = dBG) Maximum composite input power (PIN)= (PIN= POUT in dBm – Gain in dB) dBmH) Maximum per channel input power (PIN/ch ) = (PIN/ch in dBm = PAN/ch in dBm – Gain in dB) dBm* NOTE: Depends on configuration, which is factory settable from 30 dB to 60 dB. On singlemodule systems, the gain may be adjusted by the end user with Spectrian’s Graphical UserInterface software. Consult with factory or Spectrian Sales for more information.2.3.1 Set RF input drive power for each channel☛ Caution: If the RF Input Cable is connected to the MCPS4080, disconnect itfrom the MCPS4080. Connect the RF input cable to the Power Meter for thefollowing step.☛ Caution: Make sure that the power to be measured with the meter does notexceed the manufacturers recommended maximum input level.Switch on the RF input drive power at the customer provided host system exciterfollowing the instructions supplied with your RF source equipment.Set and verify the RF input drive level for each individual channel1. 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 thecalculated levels on the RF Drive Power worksheet (line H).4. Key off the channel and repeat for the remaining channels. Continue toverify the required channel input power is not exceeded.After verifying the power of each individual channel individually, ensure that thetotal average input power remains less than or equal to the maximum ratedcomposite power calculated in (G) of the worksheet.
Planning and Preparation12 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.1. Key-on all channels at one time, including any CDMA F.A.s, andmeasure input power.2. If the average composite input power exceeds the calculated averagecomposite input power (line H), readjust all channels as necessary toensure 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 InstallationBefore beginning the installation, verify that all the necessary site and radioinformation, installation materials, tools, and MCPS4080 equipment are on hand.Correct any problems or omissions before continuing. Refer to the followingReceiving and Unpacking Procedure to prepare the MCPS4080 equipment.2.4.1 Inventory Received Equipment1. Upon receipt of the MCPS4080, remove the packing lists, installation kit, andother documents attached to the shipping container.2. Examine shipping documents to make certain that they agree with your copyof the order. If there is a discrepancy between the order and the items orquantity shipped, contact your Spectrian Customer Service representativelisted in Appendix A1 of this manual.3. Check the packing list and verify that all necessary equipment has beendelivered, and that the parts are undamaged. If any evidence of shippingdamage is noted, notify the delivery agency before continuing.☛ Caution: If the container or contents appear to be damaged, you must contactthe 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 isunpacked and inspected. To protect your warranty rights, you must also notifyyour Spectrian representative and advise that the MCPS4080 was damagedduring shipment.2.4.2 Unpack Received EquipmentUncrating, inspecting, and preparing the MCPS4080 for site installation willrequire some tools and materials not included in the shipment. Use of thefollowing materials is suggested to perform these tasks.✎ Note: Assemble all tools, materials, and safety equipment before beginningwork.Safety Equipment• Safety glasses• Work gloves• Steel-toe shoes• Back-support belt
Planning and PreparationMCPS4080 System Operation 132001 Spectrian Corporation. All rights reserved.Tools• Box knife• Pair of large scissors• Inspection flashlight or lamp• Pen or pencil• Strap cutter• Straight-blade screwdriverOther Materials• A copy of the Purchase Order• A copy of the Packing ListUnpack equipment1. Open the shipping container(s) and inspect the contents. Using the requiredsafety equipment and tools, carefully cut the metal and/or nylon straps thatsurround the shipping containers. When using a box knife or scissors, takecare not to damage the contents of the box. Take care to avoid scratching thecabinet finish.2. Do not remove the ESD protective wrapping that surrounds the cabinet, unlesswearing an ESD protective wrist strap. If possible, remove this material byunwrapping the MCPS4080 by hand, rather than cutting this material withscissors or knives. Spectrian recommends not removing the protectivewrapping until installation.3. Remove spacers, packing inserts, protective coverings, plastic bags, and othershipping materials from the outside of the MCPS4080. Avoid using knives orscissors to perform this task.4. Carefully collect and dispose of the packing materials. Many of the packingmaterials used by Spectrian are suitable for recycling and need not contributeto landfills.5. While inspecting the unpacked MCPS4080, compare the quantity and labelingof each module with shipping documents and the purchase order. If there isan unresolved discrepancy between the order and the items received, contactyour Spectrian representative.6. Inspect the MCPS4080 exterior for evidence of shipping damage. Metalsurfaces should not be dented or scratched. Panels, handles, screws, andindicators should appear undamaged and properly aligned. Connectors shouldbe tightly affixed to the cabinet, with no visible dents or distortion.✎ Note: If you discover damage during inspection, contact the shipper andSpectrian at once. The shipper will furnish instructions on how to document thediscovered damage. Spectrian will arrange to promptly ship replacement parts.2.4.3 Repackaging for Return ShipmentIf it is necessary to repackage the MCPS4080 for return shipment, contactSpectrian Customer Service for detailed instructions. If possible, use theoriginal cartons and inserts to package equipment for return. Otherwise, usesuitable shipping cartons and foam inserts to prevent damage in transit.
MCPS4080 Installation14 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.3 MCPS4080 Installation3.1 IntroductionThe following section describes how to install the MCPS4080 series amplifier in abase station.Each MCPS4080 system features rear-access RF input and output connectors, aDC voltage input receptacle, and a front-access RS-232 status interface connector.Additional optional features include a rear-access RS-422 serial interfaceconnector and a remote alarms interface connector. Specific connector pinoutinformation for your MCPS4080 configuration is provided in Appendix A3.Please read and understand the instructions and warnings in this section and at thebeginning 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 weigh50 lbs (22.7 kgs); when crated for shipping an MCPS4080 system can weigh inexcess of 290 lbs (131.5 kgs) and be unbalanced. To avoid injuries or damage,use care and obtain assistance when lifting a crate containing MCPS4080components.☛ Caution: Do not attempt to move an MCPS system with modules installed.☛ Caution: Provide bottom support when removing an MCPA module to avoiddamage to the fan housing.✎ Note: Local building and fire codes govern the manner in which some sitepreparation and installation tasks are performed. Spectrian recommends thatyou consult your local building inspector or a licensed engineer to ensure thatthe site installation conforms to local building codes.3.2 Task safety equipment, tools and materialsThe following safety equipment, tools, and materials are recommended to performthe installation tasks in this section.Safety Equipment• Safety glasses• Work gloves• Back-support beltTools• Heat Gun (Master 10008 – MAS or equivalent)
MCPS4080 InstallationMCPS4080 System Operation 152001 Spectrian Corporation. All rights reserved.• 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)• Current 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• Crimp-on circular lugs• 8 AWG insulated (green) copper ground wire• Shrink Tubing3.3 Rack InstallationThe MCPS4080 series amplifiers mount in the equipment rack using rack-mounted 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 isalso labeled with the appropriate FCC approvals.All MCPS4080 shelf subassemblies contain all internal wiring for DC power andRF 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 drawnthrough grille openings in the front of each module and discharged through therear.! 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 Subassembly1. Make certain that adequate vertical space within the rack enclosure isavailable. Verify that there will be at least 4 inches (10cm) of spacebehind 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 andinstall them in the rack as shown on the accompanying job sheet.
MCPS4080 Installation16 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.4. Unpack the MCPS4080 shelf and record its serial number. Ensure theshelf is in the proper upright vertical orientation and slide it onto themounting rails.5. Use the supplied mounting screws to attach the shelf to the rack. Tightenrack-mounting screws securely.3.3.2 Install Modules in Shelf1. Unpack each RF module. Align each module with the guides in anamplifier slot and slide the module as far as possible into the shelf,making sure the module is fully seated. Note that each module weighsapproximately 50 lbs. (22.7 kg); get a helper to assist if necessary.Tighten the fasteners at the bottom of each faceplate to lock the modulesin place.2. Unpack and install the Amplifier Management Module (AMM) modulein the rightmost slot of the shelf. Tighten the fastener at the bottom of thefaceplate to lock the module in place.3. Inspect the alignment of the finished installation, and adjust if needed. Ifno problems are found, rack installation is complete.3.4 Cable and Wire Connections3.4.1 Connect Chassis Ground Wire1. Locate the chassis ground stud on the rear of the MCPS4080 for groundwire attachment.2. Measure the distance and routing between the MCPS4080 ground studand an attachment point to earth ground. Cut a length of #8 AWGinsulated (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. Attachthe DC ground wire lug to the grounding stud on the MCPS4080, andreplace 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 andtrue earth ground is less than 100 Ohms.7. Inspect the finished connection. If no problems are discovered, groundwire installation is complete.3.4.2 Connect DC Input Power CablesThe MCPS4080 power connection can be made using a pair of wires for each RFmodule, or via a single bussed connection. The DC input voltage cabling must beterminated by crimped lugs and sized to the correct wire gauge to accommodatethe wire length and the DC current requirements of the MCPS4080 in accordance
MCPS4080 InstallationMCPS4080 System Operation 172001 Spectrian Corporation. All rights reserved.with local building codes and industry practice. Refer to Table 2 for therecommended power supply circuit and wire sizing for each option.! WARNIN, Do not perform DC lead installation with energized leads. Ensurethat the DC power supply is OFF for all installation activities!1. Locate the positive and negative terminals on the customer-provided DCpower source, and verify polarity with a DVM.2. Locate the power supply lugs at the back of the switched combinerassembly. The four #10 lugs are for the per-RF-Module connection.3. Measure the distance and routing between the power source and theMCPS4080 DC lugs.4. For each power connection being made, cut equal lengths of wire forpower and return. Strip and connect each wire to the appropriate powerconnection, using the crimping tool and the supplied ground lug.☛ Caution: Verify the polarity of each supply wire prior to connecting them to theshelf subassembly. A reversed-polarity connection will severely damage theMCPS4080 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 foursets the power supply lugs at the top of the rear of the shelf subassembly.Tighten the attachment nuts firmly.7. Inspect the finished connection. If no problems exist, the DC input powercable installation is complete.3.4.3 Connect RF Output and Input CablesThe MCPS4080 has one female type-N amplified RF output for connection to acustomer-supplied coaxial cable terminated with a male connector, and one femaleSMA RF input for connection to an customer-supplied input cable terminated witha male SMA connector.! WARNING, Do not perform RF cable installation with DC power applied to theMCPS4080. Ensure that the input DC power supply is OFF before handling RFcables.☛ Caution: The Output cable must be connected before connecting the Inputcable.✎ Note: The integrity of RF cabling is critical to the electrical performance of theMCPS4080. Ensure connectors are properly assembled, are free of debris, andare clean.1. Locate the male N-type RF output connector on the end of the coaxialcable attached to the output load. Inspect the connector and clean ifnecessary; fix any problems with the cable or connector beforeproceeding.2. Locate the female N-type RF connector labeled “RF OUTPUT” on theMCPS4080.
MCPS4080 Installation18 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.3. Screw the male cable connector firmly onto the female RF outputconnector of the MCPS4080.4. Locate the male input RF connector on the end of the coaxial cable fromthe 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 theMCPS4080.6. Screw the male cable connector firmly onto the MCPS4080 femaleconnector.3.4.4 Connect Alarm Interface Cables1. The MCPS4080 provides optional factory-configured connections for drycontact, TTL, or RS-422 communications and alarm output to thecustomer system. Refer to the connector pin-out and descriptions inAppendix A3for the connections applicable to your MCPS4080.2. Locate the interface connectors located on the rear of the shelfsubassembly behind the Amplifier Management Module (AMM). Inspectthe connector and clean if necessary; correct any problems with the cableor connector before proceeding.3. Connect the male connector or input wires to the connector mounted onthe MCPS4080. Tighten the two screws on the cable connector (if any)firmly.3.5 Completing the Installation3.5.1 Set the MCPS4080 unit addressEach MCPS4080 may be configured with a unique address (0 – 7) for commandsand status reports sent through the RS-422 port.If this option is included in the MCPS4080, locate the rotary switch on the rear ofthe MCPS4080 Amplifier Management Module. Set the switch to the desiredaddress.3.5.2 Verify InstallationRecheck all physical and electrical connections to the MCPS4080 and remedy anyproblems discovered.Once the installation is verified, the MCPS4080 is ready to be set up and placed inservice, as described in the next section.
System Start-UpMCPS4080 System Operation 192001 Spectrian Corporation. All rights reserved.4 System Start-Up4.1 IntroductionThis section contains instructions on powering up the MCPS4080 amplifiersystem. These procedures should be followed after installing the MCPS4080amplifier system in the rack.4.2 Safety Information and ToolsTo avoid injury, installers, technicians, and maintenance personnel must followSpectrian's recommended procedures and observe safety precautions.! Warning: The MCPS4080 should only be operated by trained and qualifiedpersonnel. Always follow safety warnings.! Warning: Persons with cardiac pacemakers should avoid exposure to RFradiating elements. Exposing the human eye to high levels of radio-frequencyradiation may result in the formation of cataracts. Do not operate exposedcircuitry or radiating elements with personnel in close proximity to the radiatingsource. Always replace covers and shields during operation.✎ Note: Before shipment, the MCPS4080 was inspected and found free ofmechanical and electrical defects. The electrical performance of the MCPS4080should be verified using these procedures. If there is any deficiency, or ifelectrical performance is not within specifications, notify your Spectrianrepresentative immediately.ToolsThe following tools are recommended to perform installation tasks.• HP 436 Power meter• Digital Volt Meter (DVM)4.3 Verify system installationBefore operating the MCPS4080, verify proper installation as described in theprevious section.1. Verify that there are no obstructions to airflow in the front or rear of theMCPS4080.2. Ensure that the DC power supply at the site is functioning normally. DONOT turn on the DC supply to the MCPS4080 at this time.3. Ensure that the MCPS4080 is physically connected to an input RF signalsource and terminated in an output load. Ensure that the RF signal level hasbeen set properly. DO NOT turn on the RF signal source at this time.
System Start-Up20 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.4. If used, verify that the MCPS4080 address is set correctly.! WARNING: The RF output of the MCPS4080 should be connected to a 50-ohmload before DC power is turned on. The load must be capable of dissipating atleast 290 watts average power and 3,750 watts of peak power.After mechanical and electrical installation tasks are complete, the MCPS4080 isready for power-on check.4.4 Power Up the MCPS4080☛ Caution: Read and understand all of the following steps before taking anyaction.✎ Note: The MCPS4080 should be powered on and enabled before the RF inputpower is applied.1. Switch on the DC input power to the MCPS4080. Measure the inputvoltage at the bus bar connections at the rear of the unit and verify it is27VDC. Adjust the power supply if necessary.Following the power-up self-test, the MCPS4080 AMM POWER LEDshould be GREEN, indicating that the unit is functional and that in inputvoltage is between 24 and 28 VDC. If the POWER LED is amber, red, ordoes not light, turn off the DC input power and correct the power supplyfault.The ENABLE switch should be “ON”. The MCPS4080 RF modules willautomatically be ENABLED. All four LEDs on each MCPA moduleshould be GREEN.To DISABLE an RF module, set the front panel ENABLE/DISABLEswitch to DISABLE; the ENABLE LED will then be AMBER.2. Wait 5 minutes for the MCPS4080 to reach a stable operatingtemperature. DO NOT apply commercial traffic signal power during thistime.3. If the MCPS4080 is connected to a remote operations center via one ofthe 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 orthere is a problem, which must be remedied before continuing. Refer tosection 6, Troubleshooting.☛ Caution: Before applying RF input power to the MCPS4080, verify that theapplied RF input power for a single channel and the sum of all channels isbelow the calculated maximum rated RF input.
MCPS4080 System MonitoringMCPS4080 System Operation 212001 Spectrian Corporation. All rights reserved.5 MCPS4080 System Monitoring5.1 IntroductionThis section describes methods for monitoring the MCPS4080 amplifier systemoperation.5.2 Monitoring the MCPS4080 System OperationThe MCPS4080 Amplifier Management Module (AMM) has a front panel RS-232status port. This port provides the option to monitor the operation and status of theMCPS4080 using a laptop computer, if desired.A LabView-based Graphical User Interface (GUI), which can run onWindows95, 98, or NT4.0-based laptop computers is available from Spectrian.5.3 Alarm DefinitionsFault management may be accomplished by various means with the MCPS4080.The MCPS4080 includes alarm LEDs, an RS-232 diagnostics port, and an optionalbase station status/alarm interface. These LEDs may be used for visualdiagnostics by on-site technicians. Refer to Section 5 for details on theMCPS4080 alarm and protection circuits.5.3.1 Alarm classificationThe MCPS4080 fault management subsystem classifies faults into threecategories. In order of escalation, these are minor faults, major faults, and criticalfaults.5.3.1.1 Minor AlarmA minor problem exists, but the fault does not require a module to be taken out ofservice.Routine service attention is recommended.5.3.1.2 Major AlarmA major problem exists such that the MCPS4080 is not meeting all performancespecifications, but the unit is not automatically disabled.Urgent service attention is required or the unit may take itself out of service.
MCPS4080 System Monitoring22 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.5.3.1.3 Major AlarmA major failure or a condition exists that could result in damage. The MCPS4080is automatically taken out of service.Immediate service attention is required.5.3.2 Alarm ResponsesThe fault management system automatically responds when a fault is detected.Responses vary in impact from alarm notification with no subsequent action (forminor faults) to alarm notification and shut-down (for critical faults). Thehierarchy of responses is designed to keep the MCPS4080 in operation unlesscontinued operation would result in damage to the unit. Under some faultconditions, the MCPS4080 continues to operate in a degraded state. The operatormay choose to continue to operate in a degraded state, shed channels, or shut downthe MCPS4080 until repairs can be completed.5.3.2.1 Automatic Alarm resetsCritical AlarmWhen a critical alarm occurs, the MCPS4080 will automatically be DISABLED(i.e., taken out of service) until the operator re-ENABLES the unit.Major AlarmWhen a major fault is detected, the MCPS4080 attempts to clear the fault byperforming 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 inoperation with the fault alarm set.In the case of an over-temperature major alarm, the fault manager will attempt toclear the alarm one time only by resetting. If the fault condition does not clear, thealarm classification will escalate to critical (out-of-service), and the MCPS4080will shut down and remain off-line until returned to service by the operator.Alarm Transient SupressionTo minimize false alarms from transient anomalies, the fault management systemis designed with built-in hysteresis and filtering. If the fault condition persists pastthe filter interval, the appropriate fault alarm is set.5.3.2.2 Manual Alarm resetsWhen a major Alarm is detected, the operator may choose from the followingoptions:• Take no action and allow the MCPS4080 to operate in a degraded state untilservice can be performed.• Shed input channels to reduce the power to the MCPS4080.• Disable the RF Module using the front panel switch, diagnostic port, oroptional base station alarm and control interface
MCPS4080 System MonitoringMCPS4080 System Operation 232001 Spectrian Corporation. All rights reserved.5.4 MCPS4080 Alarm Limits and Protection CircuitsThe MCPS4080 series of multi-carrier power amplifiers has a wide range of alarmconfigurations available. These may be specified to meet the demands of specificapplications. In addition, the MCPA modules have built-in protection circuits toprevent damage from unintentional misuse. Module alarms may be summarizedand reported to a BTS using a customized interface. This hierarchical systeminsures that Spectrian’s MCPS4080 series amplifier systems remain robust with aminimum of false alarms, but promptly report any real issues to the base stationcontroller.The default alarm limit settings and analog protection circuit operation for theMCPS4080 family of MCPA amplifier systems is summarized below. Theinformation contained herein is provided for reference only. Guaranteedspecification limits must be negotiated between prospective customers andSpectrian. There are three levels of the alarm/protection hierarchy:• Analog Protection Circuits – Configured in hardware design to protect theMCPA.• MCPA Module Alarms – Most are software configurable for specificapplications.• Amplifier System Alarms – Summarizes MCPA and Alarm ManagementModule status.In general, analog protection circuit limits are set by design, and may not bechanged. MCPA alarm limits are software configurable, and may be tailored tomeet customer alarm specifications. Individual MCPA alarms is not displayed onthe module front panel, but they are accessible through Spectrian’s Graphical UserInterface (GUI) software. System level alarms are summaries of the module alarmstatus (minor/major/critical), as well as the Amplifier Management Module(AMM) and the communication link between the modules and the AMM. Thesummary set-up is configurable using the amplifier GUI software.5.4.1 MCPA Module Analog Protection CircuitsThe MCPS4080 MCPA module design incorporates circuits to prevent MCPAmodule damage by common misuse conditions. The circuits react automatically tothe conditions shown in Table 3 with the limits set as noted. These limits are notadjustable by software configuration.Control Condition LatchInput Overdrive > -2 dBm @ Input (configured for 55dB module gain) NoError Amp Overdrive > -15 dBm @ Carrier Cancellation Input NoOver voltage Clamp Internal DC line is limited to 28V by linear regulationup to 30V input NoCircuit Breaker > 60 A current draw YesTable 3: Analog Protection Circuit
MCPS4080 System Monitoring24 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.5.4.2 MCPA Module AlarmsThe set points, delay, reset points, and latching conditions of all three types ofalarms are software configurable. Some Minor alarm settings can be specified bythe customer but must be agreed upon between the customer and Spectrian prior toinstallation or modification. Alarm limits for Major and Critical Alarms are fixedand can not be modified, insuring long term reliability of the MCPA module.Type Indicator Condition Action / ResponseNo Alarm LED Green Normal operation NoneMajor LED Amber System malfunctioning but operating (degradedperformance) System Reset after DwellTable 4: Module Alarm HierarchyDescription GUIMnemonic MinorAlarmSet PointMajorAlarmSet PointMajor Alarm(ModuleShutdown)CriticalAlarmDwell TimeCriticalAlarm Latch HysteresisReset PointMain AmpBase Temp TMP 75°C > 82 °C > 90 °C, >120°C, no dwell10 min. No 70 °COver/UnderVoltage OVS/ UVS 22 to 24V 20 to 22V or28 to 30V <20V or >30V 5 sec No 24V or 28VIM Degradation LOP Adjustmentlimit rail N/A N/A No N/ALoad VSWR VSR >10:1 >4:1 N/A No N/ARF Overdrive OPR N/A >125W 2 sec Yes 150WFan Failure FAN Low RPM(≤50%rated)1 FanFailed 2 Fans Failed None No N/AInput Current CKT N/A >60A >60A No Delay After 3 Failures N/AGain Drop GAN N/A < -3 dB N/A 2 sec. No < -1 dBTable 5: Default Alarm Descriptions and Settings5.4.3 MCPA System AlarmsA multi-module MCPA system will have an Amplifier Management Module(AMM) that summarizes the status of all modules and reports this information tothe base transceiver station (BTS). The format of this information is usuallycustomized for specific customers. Options for physical layer customizationinclude:• 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 additionSpectrian does maintain an internal standard for serial messaging. System status isgenerally a combination of the module status. The customer also specifies this. Anexample of a system alarm hierarchy might be as noted in the table below.
MCPS4080 System MonitoringMCPS4080 System Operation 252001 Spectrian Corporation. All rights reserved.MCPA AlarmCondition Amplifier System Status Summary LogicMinor At least one module reporting a minor alarm ORMajor At least 3 modules reporting a critical alarm ANDTable 6: Typical MCPS System Alarm Hierarchy
Troubleshooting and Maintenance26 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.6 Troubleshooting andMaintenance6.1 IntroductionThe following chapter provides basic information about diagnosis of problemswith the MCPS4080. Please read the following safety information prior tobeginning diagnosis and repair actions.! Warning: Troubleshooting and repairs should be performed only by trained andqualified personnel or at authorized Spectrian repair depots. Observe all safetywarnings and use the required safety equipment when performing the tasksdescribed in this chapter.✎ Note: Before shipment, theMCPS4080 was inspected and found free ofmechanical and electrical defects. The electrical performance of theMCPS4080should be verified using these procedures. If there is any deficiency, or ifelectrical performance is not within specifications, notify your Spectrianrepresentative immediately.ToolsThe following tools are recommended to perform system service tasks.• HP 436 Power Meter• Digital Volt Meter (DVM)6.1.1 Safety InformationTo avoid injury, installers, technicians, and maintenance personnel must followSpectrian's recommended procedures and observe all safety precautions.! Warning: The MCPS4080 transmits high power at radio frequencies. Severeradiation burns can occur if recommended safety precautions are not strictlyobserved.! Warning: Persons with cardiac pacemakers should avoid exposure to RFradiating elements. Exposing the human eye to high levels of radio-frequencyradiation may result in the formation of cataracts. Do not operate exposedcircuitry or radiating elements with personnel in close proximity to the radiatingsource. Always replace covers and shields during operation.! Warning: Except where specifically indicated, always disconnect RF inputpower and DC input power to the MCPS4080 before performing procedures thatdo not require power. For those procedures that do require power, be extremely
Troubleshooting and MaintenanceMCPS4080 System Operation 272001 Spectrian Corporation. All rights reserved.cautious in handling test leads, tools, and equipment near live circuits. Neverreach into an enclosure for the purpose of servicing or adjusting live equipment.6.2 TroubleshootingRefer to section 5.3 for a definition of alarm types and the significance of thosealarm types.6.2.1 Using LED IndicatorsEach MCPS4080 RF Module is equipped with four LED indicators mounted onthe front panel. The system Alarm Management Module has two LED indictorsmounted on the front panel. These indicators provide useful status and diagnosticinformation to operators and technicians.ModuleLED’s Green AmberPOWER Voltage OK, 26 VDC <22 V or >30V; RF shuts downENABLED Enabled DisabledSTATUS OK Major AlarmFAN OK Fan FailureAMM LED’s Green Amber RedDC POWER Voltage OK, 26 VDC 22-24 V or 28-29V;system has degradedperformance<22 V or >29V;system shuts downSTATUS No Faults N/A System Fault Exists6.2.2 Using the Diagnostic Port OutputUse of the Diagnostic Port is described in the release notes with the interfacesoftware distribution.6.2.3 Using Remote Alarm MonitoringThe MCPS4080 can include an optional alarm or control interface to base stationmonitoring systems. These systems provide a serial interface to transmit statuscodes to a remote host computer and receive a limited set of commands from thehost. For systems with such an interface, the interface is described in detail in thespecifications Appendix, A3.✎ Note: The MCPS4080 fault management system and its associated alarms andfault indicators operate independently of the serial interface.
Troubleshooting and Maintenance28 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.6.3 Periodic Maintenance6.3.1 Dust RemovalKeep the air inputs and outputs of the MCPS4080 free of dust or other materialthat could block cooling airflow.6.3.2 Visual InspectionPeriodically visually inspect the MCPS4080 to ensure that all indicators arefunctioning normally and that all system interfaces are properly connected.6.4 Module ReplacementThe RF modules of the MCPS4080 are hot-swappable field replaceable unitswhich can be removed and inserted while the system is online without affectingthe operation of the other units in the system.6.4.1 Replacing an RF Module! WARNING: The RF Module is very heavy, 50 lbs (22.7 kg). Get assistance ifnecessary.☛ Caution: Provide bottom support when removing an MCPA module to avoiddamage to the fan housing.1. Disable the RF Module being replaced by switching the front panel switch toDISABLE. The ENABLE LED will be AMBER.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 DISABLEposition.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 ENABLELED will then be GREEN.6.4.2 Replacing an AMM1. 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.
Troubleshooting and MaintenanceMCPS4080 System Operation 292001 Spectrian Corporation. All rights reserved.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 power-up 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 anMCPS4080.! Warning: Remove all DC and RF connectors prior to removing the MCPS4080from 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 ifnecessary.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 andpull the MCPS4080 straight out from the rack.5. Set the disconnected MCPS4080 aside in a clean, safe place, free ofelectrostatic charges.6. Remove the replacement MCPS4080 from its static-protective packaging.✎ Note: You may wish to record the serial number on your repair record beforeinstalling the module.7. Follow the installation and operation instructions in Sections 3 and 4 to placethe unit back in service.6.5 Module Service6.5.1 Replacing MCPS4080 Fan Modules! WARNING: The RF Module is very heavy (50 lbs / 22.7 kg). Get assistance ifnecessary.☛ Caution: Provide bottom support when removing an MCPA module to avoiddamage 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 Maintenance30 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.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, theFAN indicator LED should be GREEN.
Appendix A1 Spectrian, Inc. OfficesMCPS4080 System Operation 312001 Spectrian Corporation. All rights reserved.Appendix A1 Spectrian, Inc.OfficesSpectrian Headquarters350 West Java DriveSunnyvale, Calif. 94089Ph: 408-745-5400Fax: 408-541-0263Web: www.spectrian.comSpectrian, Asia Office4TH FL., Ensung Building,601-18, Yoksam-Dong, Kangnam-Ku,Seoul, 80-080, KoreaPh: 822-545-6441Fax: 822-545-6062Centralized customer service:For customer service support please direct all requests, questions, comments, andinquires to cs@spectrian.com or mail to:Spectrian Customer Service Department350 West Java DriveSunnyvale, Calif. 94089Ph: 800-793-7222Fax: 408-541-0263Technical Support LinePh: 408-745-5416
Appendix A2 Major Electrical Specifications32 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.Appendix A2 Major ElectricalSpecificationsMajor Equipment Specifications for the MCPS4080 Amplifier SystemElectrical Specifications Specification @ 25ºCFrequency Range 1930 - 1990 MHzAverage 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 Power2< -45 dBc, 885 KHz offset, 30 KHz res bandwidth@ 1960 MHz, 100W Output < -60 dBc, 1.98 MHz offset, 30 KHz res bandwidth<-13 dBm, 2.25 MHz offset, 1MHz res bandwidthReceive Band Noise 60 dBcCarrier Spacing (TDMA) 60 KHz min., 20 MHz max.Power Output Stability for Single Frequency ± 0.5 dB under nominal conditionsOperating Bandwidth up to 20 MHzGain Factory set, 45 to 55 dB, 85 dB with optionalpreampGain Flatness vs. Frequency ± 0.5 dB (over all temps)Gain Variation over Temp @ Any Inband Frequency ± 1 dBForward Power Sample Port Coupling -50 dB typ.Input/Output Port Return Loss -15 dB min.Second/Third and Greater Harmonic Output -45 dBc / -70 dBcDC Input Voltage Range 26 to 28VDCDC Input Current @ 27VDC ± 1 VDC 45A Max @ 80 Watts1Power levels at the output of the system combiner will vary depending on the configuration.2Measured at the RF module output connector and in accordance with IS-97.
Appendix A3 Major Mechanical SpecificationsMCPS4080 System Operation 332001 Spectrian Corporation. All rights reserved.Appendix A3 Major MechanicalSpecificationsMechanical SpecificationsOperating/Storage Temperatures 0ºC to 50ºC/-40ºC to 85ºCSize, 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 lugsDC Ground: 10-32 threaded lugsMaintenance Port: RS232Alarms Port: RS422 (standard)RS232 (Front panel port) pinout: Pin 1 GNDPin 2 TXPin 3 RXPin 4 N/CPin 5 GNDPin 6 N/CPin 7 RTSPin 8 CTSPin 9 N/CIndicators AMM: DC On, Alarm LEDsMCPA Modules: DC On, Enable, Alarm, FanLEDs
Appendix A3 Major Mechanical Specifications34 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.Mechanical OutlinesMCPS4080 Shelf Configuration
Appendix A3 Major Mechanical SpecificationsMCPS4080 System Operation 352001 Spectrian Corporation. All rights reserved.MCPA Module for MCPS4080 Family
Appendix A4: MCPS4080 System Checkout36 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.Appendix A4: MCPS4080System CheckoutMCPS System CheckoutIn some cases, it may be desirable to perform a system checkout prior toinstallation to insure proper operation. The following procedure is included hereonly for reference. Accurate specification verification is not guaranteed whenusing this procedure.Equipment Required• HP4432 Signal Generator• Sorenson DHP40-250 DC Power Supply• HP8561A Spectrum Analyzer• HP436 Power Meter• HP8481A Power Head• 750W, 30 dB Attenuator• Digital Volt Meter (DVM)Setup Procedure1. Connect Sorenson DHP-40-250 DC power supply to DC input as outlinedin 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, 9Walsh Codes.3. Connect Attenuator to RF Output4. Connect HP8481A Power Sensor to Attenuator output.5. Connect HP8561A Spectrum Analyzer to Sample Port Output. SetATTEN=10 dB, RBW=30kHz, VBW=10kHz, Vid. Avg.=100,SPAN=10MHz.
Appendix A4: MCPS4080 System CheckoutMCPS4080 System Operation 372001 Spectrian Corporation. All rights reserved.Performance Checkout Procedure1. Set current limit on Sorenson power supply to appropriate level as listedin Table 2.2. Set DC voltage to 27 ± 1V.3. With no RF applied, verify that idle current is approximately 13A xnumber of MCPA RF modules.4. Apply RF signal, and slowly increase power to maximum rated power aslisted 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 exceedsspecification listed in Appendix A2.
INDEX38 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.7 INDEXacoustic treatment 8airborne dust 8air-conditioning 8alarm configurations 23alarm connection 9Alarm Definitions 21alarm outputconnection 18alarm/protection hierarchy 23ambient noise 8AMM 6installation 16replacement 28Amplifier Management Module 6Amplifier Management Unit 5Amplifier System Alarms 23AMPSmodulation 3AMU 5Analog Protection Circuitsummary table 23Analog Protection Circuits 23average powerrated 32Block DiagramRF module 4building codes 7bussed power optionDC power 17cabinet clearance 8cancellation 4Cautiondefinition 2CDMA 3CDPD 3chassis ground 9checking 16connection 16combineractive 6combiner lossesoutput 6combustible materialsfloor covering 7composite power 11cooling air 15critical faultsdefinition 21customer servicecontact information 31DC input voltage range 32DC power supplyrequirements 9DC wireconnecting 17default alarmsettings 23degraded operation 22deratefor altitude 8DISABLERF module 20dustremoval 28error loop 4error signal 4ESD protective wrapping 13fanreplacement 29feed-forward 4fire codes 7fire-extinguishingin site 8floor covering 7form C 9frequency 32
INDEXMCPS4080 System Operation 392001 Spectrian Corporation. All rights reserved.Graphical User Interface 3, 21, 23ground halosite 8grounding systemsite 8guidesmodule alignment 16hot airexhaust 8hot-swappableRF modules 28input drive levelworksheet 10installationverify 19installationsintended 7Introduction 1IS-136 TDMA 3IS-95 3lightingworking area 7lightning arrestors 8lightning protection 8main loop 4major faultsdefinition 21MCPS addresssetting 18Mechanical Outlines 34minor faultsdefinition 21Module Alarm Hierarchytable 24module alarmssummarized 23Module Alarms 23Module Replacement 28multimodule MCPA 25Notedefinition 2out of servicealarm 22over-temperaturealarm reset 22packing lists 12Periodic Maintenance 28physical layeralarms 25pinoutRS232 33planningsite 7positive supplyconnecting 17powering up 19power-up self-test 20problemdiagnosis 26protection circuitsbuilt-in 23radio parameters 10recommended power service 9Replacing MCPS4080 Fan Modules 29required current 9return shipment 13return wireconnecting 17RF cablingintegrity 17RF input drivesetting 11RF loadtest 20RF moduledisabling 20installation 16RF outputconnecting 17safety equipmentinstallation 14self-resetautomatic 22shipping containersopening 13shipping damage 12shipping documents 12side support rails 15
INDEX40 MCPS4080 Operations Manual2001 Spectrian Corporation. All rights reserved.smoke detectors 8summarizedalarms 23uncrating 12unrestricted airflow 8vibration 8Warningdefinition 2weight 7wrist strap 13, 15

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