Andrew operation and maintenance Specifikace

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 4.9-Meter Andrew Earth StationAntenna. The

11Installation ProceduresFigure 1bFoundationPreparation

Foundation Notes12Installation Procedures1. Remove all burrs and sharp edges.2. Dimensions apply before plating.3. Interpret drawing per ANSI Y14.5M-1

A325 TensioningStep 1Step 2Step 3Step 4Step 5Step 613During the installation process, there are several references to the A325 hardware ten-sioning pr

Reflector/BackStructureAssemblyStep 114Installation ProceduresUse of A325 hardware eliminates slippage between mating surfaces under high loadingcondi

Step 2Step 315Installation ProceduresLoosely attach 302511 Ribs to 302648 Short Struts as shown in Figure 4. Note: Do notfully tighten hardware at thi

Step 4Step 516Installation ProceduresWhen all 12 rib/strut sets have been loosely assembled, securely tighten all stainlesssteel shoulder bolts first,

17Installation ProceduresStep 6Attach the reflector panels (with skirts) by placing them on the ribs and sliding theminward carefully guiding them unt

SubreflectorSupport BracketsStep 118Installation ProceduresAttach four 206278 lifting tabs across the second and third pairs of reflector seam holesfr

Step 2Step 319Installation ProceduresAttach the four 302518 Subreflector Support Brackets at the 15th (outer most) reflectorpanel hole position from r

IntroductionHow to Use This ManualGetting StartedInstallationProceduresOperationPreventiveMaintenanceTable of Contents2Table of ContentsIntroduction.

Rotating TubeAssemblyStep 1Step 2Step 320Installation ProceduresNote: Applicable feed installation drawings are included with each feed system.Install

21Installation ProceduresPolarization DriveInstallationStep 1Step 2Step 3Attach the Polarization Drive Assembly as shown in Figure 11. Measure and cut

22Installation ProceduresSubreflectorAssemblyStep 1Loosely attach four 302767 Subreflector Struts together with the four 302769 Apex AngleBrackets as

23Installation ProceduresStep 3Install 302514 Subreflector Assembly to the 302768 Subreflector Ring Support Bracketsas shown in Figure 14. Securely ti

Pedestal GroundMount AssemblyPedestalInstallationStep 1Step 224The pedestal mount is an elevation-over-azimuth mount optimized for geostationary satel

Step 325Refer to Figure 16. Using the 6 foot nylon choker under the stinger arm, and the 3 foot chok-er around the elevation pivot tube, lower the ped

Step 4Step 526Level the pedestal plumb within ±0.5° using the leveling nuts provided.Secure pedestal with washer and nuts as shown in Figure 17.Instal

Step 6(Motorized MountOnly)27Installation ProceduresRefer to Figure 17B. Attach Az/El Jack Screw Assemblies and pedestal jack arm topedestal assembly

Reflector toGround MountAssemblyStep 128Installation ProceduresUsing 5/8” shackles, attach four 16 foot chokers provided to reflector lifting lugs. Li

Step 229Installation ProceduresGently lower the reflector assembly into position and attach to elevation pivot lugs using 3/4”hardware as shown in Fig

IntroductionLike all Andrew earth station antennas, the 4.9-Meter Earth Station Antenna provideshigh gain and exceptional pattern characteristics. The

Figure 20SubreflectorInstallation andAdjustmentStep 130Installation ProceduresFailure to conform to the following alignment procedures may result in n

31Installation ProceduresStep 2Step 3Step 4Step 5Reference the appropriate feed installation drawing and install the feed system assembly.Note: The fe

32Installation ProceduresStep 6Step 7Step 8Recheck subreflector centering and height settings.Remove and store 206278 lifting tabs. Replace panel seam

OverviewAcquiring ASatellite33OperationThere are several procedures that may be used to properly acquire the satellite. Andrewrecommends that a spectr

Step 1Step 2Step 3Step 4Step 5Step 634The following steps provide the procedure for acquiring a satellite.Begin by obtaining the correct Az/El pointin

Step 7Step 8Step 935Move the antenna in azimuth to obtain a null, then move ± in elevation to obtain a largepeak signal. If not, move the antenna in t

Step 1036With all 24 transponder signals of approximately equal amplitude appearing on thespectrum analyzer screen determine the specific antenna syst

SubreflectorAdjustment37OperationAfter the satellite has been acquired and testing has taken place with the spectrum ana-lyzer, the subreflector may n

OverviewGeneral CleaningElectrical Parts38Preventive MaintenanceThis section contains periodic preventive maintenance instructions for the 4.9-MeterEa

Mechanical PartsInspectionAntenna 39Clean mechanical parts by first removing dust, dirt, and other loose contaminants with ascraper, stiff brush (bris

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

40• Visually inspect the feed window for dirt and the feed, feed supports, feed window,and reflector for distortion, foreign object damage and environ

Preservation ofComponent PartsAluminum PartsGalvanizedSurfacesLubrication41When preserving the component parts, refer to the following paragraphs in t

42any protective caps and clean off each lubrication fitting prior to injecting fresh grease.The elevation and azimuth jackscrew assemblies are equipp

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

OverviewWarningsThe installation, operation, and maintenance of the 4.9-Meter Earth Station Antennarequires qualified and experienced personnel. Andre

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 InventoryEquipmentReceivedAndrew Corporation

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