Andrew 7.6-Meter ESA Manual do Utilizador Página 1

Andrew Corporation10500 West 153rd StreetOrland Park, IL U.S.A. 60462Telephone: 708-349-3300FAX (U.S.A.): 1-800-349-5444Internet: http://www.andrew.co

OverviewFoundationPreparation10Installation ProceduresThis section provides installation procedures for the 7.6-Meter Andrew Earth StationAntenna. The

A-325 TensioningStep 1Step 2Step 3Step 4Step 5Step 611During the installation process, there are several references to the A-325 hardware ten-sioning

Tripod GroundMount AssemblyAzimuth BeamAssemblyStep 1Step 2Step 312The three-point mount is an elevation-over-azimuth mount optimized for geostationar

Support LegsAssemblyStep 1Step 213Attach 201327A joint assembly to 201313A beam assembly as shown in Figure 5.Attach 200083 angles to 201313A beam ass

Step 3Step 414Raise 201313A beam assembly to upright position and attach 201315 supports to201327A joint assembly as shown in Figure 7.• Use 7/8 x 2-1

Step 5Step 615Attach 201314 supports to 201301/201302 rear pad assemblies and 200884 jointassembly as shown in Figure 9.• Use 7/8 x 2-1/4 in. (57 mm)

Panning FrameAssemblyStep 116Attach 201487 panning frame to 221384 azimuth pivot assembly as shown in Figures 11and 12.• Use 7/8 x 2-1/4 in. (57 mm) h

Step 217Attach 221608 joint assemblies to panning frame as shown in Figures 13 and 14.• Use 7/8 x 2-1/4 in (57 mm) hardware• Insert bolts from panning

Step 3Step 4 18Attach 201316 support pairs to 221608 joint assemblies as shown in Figure 15.• Place supports back-to-back with edges out and flat of a

Step 5 Step 619Attach 201770 plate connecting 201484/201484-2 extension assembly to 201487 pan-ning frame as pictured in Figure 17.• Use 7/8 x 2-1/4 i

IntroductionHow to Use This ManualGetting StartedInstallationProceduresOperationPreventiveMaintenanceTable of Contents2Table of ContentsIntroduction.

Step 7Step 820Attach second 201488 outrigger plate to 201487 panning frame assembly as shown inFigure 19.• Use 7/8 x 2-1/4 in (57 mm) hardware• Insert

Step 921Installation ProceduresFigure 21Attach 301741/301742 tripod joint bracket to 221721 elevation axis assembly as shownin Figure 22.•Use 7/8 x 2-

Step 10Step 1122Installation ProceduresAttach 300026 tripod channel legs to 301741/301742 tripod joint bracket as shown inFigure 23.• Use 7/8 x 2-1/4

ElevationJackscrewAssemblyStep 1Step 223Installation ProceduresAttach 301771/301736 elevation jackscrew assembly to 201596 mounting plates asshown in

Step 3Step 424Installation ProceduresFigure 27Attach 301771/301736 elevation jackscrew to 301725 tripod tube weldment as shown inFigure 28.•Use 7/8 x

AzimuthJackscrewAssemblyStep 1Step 2Mount AssemblyStep 1Step 225Installation ProceduresInsert 221923/223180 azimuth jackscrew tube into 221738 azimuth

Step 3Step 426Installation ProceduresAttach rear pad assemblies to rear foundation pads as pictured in Figure 31.Figure 31Connect beam assembly using

Step 5Step 627Installation ProceduresHoist elevation jackscrew assembly to mount. Attach 221384 azimuth pivot assembly to221608 joint assembly with 7/

Step 7Step 8Step 928Installation ProceduresFigure 34Refer to Figure 34. Position hoisting ropes on motor/jack assembly so jack will not rollwhen hoist

Step 10Step 1129Installation ProceduresExtend jackscrew to meet outrigger assembly. Loosely re-attach outrigger plate to pinassembly in azimuth jacksc

IntroductionLike all Andrew earth station antennas, the 7.6-Meter Earth Station Antenna provideshigh gain and exceptional pattern characteristics. The

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Proprietary DataInformation andAssistanceNoticeTechnicalAssistanceThe technical data contained herein is proprietary to Andrew Corporation. It is inte

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OverviewContentThe scope of this manual is intended to provide station personnel with the base installa-tion, operation, and maintenance requirements

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OverviewAcquiring ASatellite54OperationAfter you have completed the assembly of your antenna, you are now ready to becomeoperational. In order to oper

Step 1Step 2Step 3Step 455The following steps provide the procedure for acquiring a satellite.Manually move the antenna in the azimuth (scanning back-

Step 5Step 6Step 7Step 856If the signal amplitude diminishes and does not increase (position B) to the level notedwhen the antenna was peaked on the s

Step 957With all 24 transponder signals of approximately equal amplitude appearing on thespectrum analyzer screen determine the specific antenna syste

SubreflectorAdjustment58OperationAfter the satellite has been acquired and testing has taken place with the spectrum analyzer,the subreflector may nee

OverviewGeneral CleaningElectrical Parts59Preventive MaintenanceThis section contains periodic preventive maintenance instructions for the 5.6-MeterEa

OverviewWarningsThe installation, operation, and maintenance of the 7.6-Meter Earth Station Antennarequires qualified and experienced personnel. Andre

Mechanical PartsInspectionLocalControl/MotorDrive Controller60scraper, stiff brush (bristle or wire in the case of rust or other corrosion), or cloth

Antenna 61pungent odor indicative of burning vanish denoting overheating or a total breakdown.• Check all terminal boards for broken or missing termin

62and minus direction from the local control/motor drive controller at least once everythree months during antenna down time. Check the mechanical lim

Drive SystemVoltage andCurrent Checks Step 1 Step 2 Step 3 63tain all electrical grounding connections (including cross-axis grounding straps) areinta

Step 4Step 5Step 6Step 7Step 8Step 964Turn the AZIMUTH EAST/WEST switch to either position and while the antenna is rotat-ing, carefully use a clamp o

Preservation ofComponent PartsAluminum PartsGalvanizedSurfacesLubrication65Remove all loose paint and corrosion by scraping, wire brushing, or using s

Jackscrews/MotorsGearMotor/Housing FillDrainRequirements66tube assembly and corresponding thrust pads. Securely replace access plugs in squaretube wel

67Preventive MaintenanceLube Components Frequency Type Type No. of LubePoint to be (Months) of of Points orNo. Lubricated 13612Service Lube Quantity1.

High-Speed Antenna Lubrication Points59106784123LocalMotorControlHeaterControlPressureFittingPressureFittingGearboxFillGearboxVentGearboxLevelGearboxF

Medium-Speed Antenna Lubrication Points59106784123LocalMotorControlHeaterControlPressureFittingPressureFittingGearboxLevelGearboxDrainGearboxLevelGear

RecommendedToolsNOTE: Failure to follow an installation procedure could result in damage to equipmentor personal injury.Additional warnings will be di

Parts VerificationReportingEquipment Loss orDamageReporting VisibleLoss or DamageReportingConcealedDamage InventoryEquipmentReceivedUpon receipt of yo

ReturningEquipmentStep 1 Step 2 Step 3 Step 4Step 5Andrew Corporation tries to ensure that all items arrive safe and in working order.Occasionally, de