IP Mobilenet ECSHPA45TX User Manual hpa4

IP Mobilenet, LLC hpa4

Users Manual

ElectroComProduct Support ManualModel HPA4UHF High PowerAmplifierDocument Number 516-80075 revision X1
TABLE OF CONTENTS1. Introduction ................................................................................................... 31.1 Document Scope....................................................................................... 31.2 Reference Material ..................................................................................... 41.2.1 ElectroCom Documents (Attached)...................................................... 41.3 Product Description .................................................................................... 51.4 Product Features:....................................................................................... 52. Interface Description ........................................................................................ 63. Installation..................................................................................................... 73.1 Unpacking ................................................................................................. 73.2 Installation ................................................................................................. 73.1.1. Typical Rack Installation ..................................................................... 83.1.2 Installation Instructions....................................................................... 104. Theory of Operation.................................................................................... 114.1 Thermal Equilibration System.................................................................. 114.2 RF Amplifier Section................................................................................ 115. Maintenance ............................................................................................... 126. Specifications................................................................................................. 137. Warranty and Service..................................................................................... 147. 1 Warranty................................................................................................. 147.2 Warranty Service ...................................................................................... 15
1. Introduction1.1 Document ScopeThis document describes the hardware of the model HPA4 UHF High PowerAmplifier.Section 1: non-technical overview of the product and its featuresSection 2: identifies product interfaces (i.e. connectors, power sources, etc.)Section 3: contains installation informationSection 4: provides functional description of circuit operationSection 5: maintenanceSection 6: identifies the specifications the product is designed to meetSection 7: contains warranty and service informationSection 8: contains internal interconnections, schematic diagrams, parts lists,and component location drawingsThroughout this document, SMALL CAPITAL LETTERS are used to indicate signalnames used on schematics and Italics are used when describing circuitry,methods, or devices which affect regulatory compliance.
1.2 Reference Material1.2.1 ElectroCom Documents (Attached)NUMBER DOCUMENT NUMBER DESCRIPTION1 502-8800958 Schematic - High Power Amplifier HPA42 PL502-80059 Parts List Hi PWR AMP UHF3 502-80185 Interface Locator Drawing4 502-80073 Interconnection Diagram HPA4
1.3 Product DescriptionElectroCom's Model HPA4 UHF Amplifier is designed to amplify the RF output ofElectroCom's DR4B Base Station up to 100 Watts. The HPA4 uses a dualamplifier design to ensure graceful degradation of output power under faultconditions and enhanced reliability. The HPA4 features a three-stage thermalequilibration system, and over-voltage protection prolonging the life of theamplifier.1.4 Product Features:Model HPA4 High Power Amplifier Features:• Dual Amplifier Design• 3-Stage Thermal Equilibration• Over-Voltage Protection• 12 VDC operation• Compact size, rugged construction
2. Interface DescriptionThe HPA4 has 2 external RF ports; both are type "N" female coaxial connectors:J1 is the RF input portJ2 is the RF output portDC power connection to the HPA4 is accomplished via J3, a 2-conductor, quick-disconnect connector. J4 is a control / alarm cable which carries the amplifier's keysignal and high-temp alarm signal.DC POWERINTERFACEJ3J4RF OUTJ2COOLINGJ1RF INCONTROLFAN
3. Installation3.1 UnpackingCarefully inspect the amplifier for any signs of shipping damage. If damage issuspected, file a claim immediately with the carrier and contact your dealer. Ifpossible, keep the original shipping container for shipping the unit back for repairor for verification of damage during shipment.3.2 InstallationStandard considerations such as air flow clearance in the vicinity of theamplifier's mounting location, and ensuring adequate space exists for the routingof RF, DC power, and control cables are of primary importance.RF coaxial, power, and control cables should be neatly routed with service loopsto provide for convenient removal for functional testing and / or maintenancepurposes.
3.1.1. Typical Rack InstallationPOWER SUPPLYPOWER AMPLIFIERBASE STATIONDIVERSITY RECEPTION SYSTEMADJUSTMENTSPACE FORACCESSFRONT VIEWDC OUTPUT12VDCUHF (400-512MHz) BASE STATIONCOOLINGSPACE FORCommunication SystemsElectroComTX RX1CD RX2 RX3 POWERHPA4IOOPTIONALPOWER

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