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Hughes AN4-074-DF installation manual Repeat until all four bolts are installed

Models: AN4-074-DF

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6.Repeat until all four bolts are installed.

4.Place the Az/El mechanism over the revolving plate so the bolt holes align.

5.Install a bolt from underneath the revolving plate. While holding it with one hand, install the 7/16-in. flat washer and nut. See Figure 10.

6.Repeat until all four bolts are installed.

Align bolt from underneath and install washer and nut.

Figure 10: Aligning the Az/el cap bolts

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Chapter 3 • Installing the radio and antenna assemblies 1035567-0001 Revision A

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Hughes AN4-074-DF installation manual Repeat until all four bolts are installed

Contents

74 m Ku-bandAntenna Model AN4-074-DF Installation Manual forFor Consumer Installations 1035567-0001 Revision A OctoberCopyright 2004, 2005 Hughes Network Systems, LLC TrademarksImportant safety information Types of warnings used in this manualDANGER Antenna installation safety DANGERTo avoid electric shock, stay at least 20 ft from power lines DANGERObserve these precautions to avoid exposure to RF radiation, a potential safety hazard Page viii Contents Chapter Chapter FiguresChapter Chapter30. Transmit and receive cable configurations ChapterChapter Chapter Tablesxiii Tables 1035567-0001Revision ATables 1035567-0001Revision A About this document Scope and audience OrganizationRevision Revision recordDate of issue ScopeBroadband satellite system components OverviewChapter Antenna installation overview on pageRadio not visible in optional shroud Figure 1 Installed .74 m antennaChapter 1 Overview 1035567-0001Revision A Antenna reflector Transmitter Feed arm Mast7.Install the radio on the feed arm Antenna installation overview6.Assemble and install the Az/El cap 10.Install the antenna on the mountInstalling the antenna mount Grounding Tasks related to antenna installationSelecting the installation site Mount Installation Guide HNSChapter Antenna parts and required toolsAntenna kit components Antenna kit components on pageThe Az/El cap is shipped in a bag containing Figure 5 Radio assembly Figure 4 Feed arm unattachedTrimast or other antenna mount Figure 6 Trimast in various configurationsFigure 7 Optional shroud for feed assembly Small hardware list DetailsQuantity Tools ToolDetails Determining the pointing values on page Installing the radio and antenna assembliesChapter Assembling the Az/El cap on pageDetermining the pointing values Assembling the Az/El cap 6.Repeat until all four bolts are installed Installing the Az/El cap onto the antenna Figure 12 Locating the polarization scaleElevation Elevation nut one on each side Figure 14 Locating the elevation reference edgeFigure 15 Reading the elevation reference edge Elevation reference edgePolarization Bottom of reflector Installing the fine elevation pointing tool Figure 18 The fine elevation pointing tool3.Separate the end of the waveguide from the shim 4.Remove the horizontal shim and O-ring Because of the shim’s alignment pins, you must rotate the TRIA 90 from its horizontal polarization position. You must rotate the TRIA before you re-attachthe waveguide end so you can insert the shim alignment pins into the waveguide end plate. See Figures 21 and 8.Insert and tighten the four Allen screws Installing the radio assembly on the feed arm Figure 23 Securing the O-ringConnecting the feed arm to the antenna reflector Feed assembly WaveguideTransmitterTo connect the feed arm to the antenna reflector Installing the antenna assembly onto the mast Attaching the optional shroud Figure 29 Feed assembly with shroud Figure 28 Shroud screwsSide screw holes, one on each side Bottom screw Routing the cables at the ODU on page Cabling and connectionsChapter Ground connection on pageRouting the cables at the ODU Receive cableTransmitter Connecting the transmit and receive cables Transmit cable4.Secure the cable with cable ties Ground connection Transmit Fconnector, female Ground screw Not usedFigure 33 Ground screw on the transmitter Page Isolating the transmit signal on page Pointing the antennaAdjusting the antenna on page ChapterUsing the installation software Peaking the signalAntenna pointing overview Cable connector Display Figure 34 OPI optional toolPointing Interface Operating Instructions HNS Prerequisites for antenna pointing Elevation Adjusting the antennaAzimuth PolarizationFigure 38 Pointing features on the Az/el cap Pointing adjustments onAz/El cap Figure 39 Antenna adjustment locations3/4-in.to the left of mark 1 and label it Receive pointing not yet moved to mark 3 on the mast, return to step 1 in Adjusting azimuth and adjust it again. Keep moving the reflector a little at a time until you get a signal Elevation Fine-tunethe antenna elevation as follows2.While watching the signal strength display, adjust the elevation adjustment nuts by turning them a few turns clockwise and counterclockwise until you peak the signal again c.Fully tighten the left nut torque to 12 ft-lbf PolarizationIsolating the transmit signal 1.Loosen the two elevation nuts Final steps Removing the fine elevation pointing toolAcronyms and abbreviations Page Index Tasks related to antenna installation 4 Tool list Transmit cable connecting 33 routingIndex 1035567-0001Revision A