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Hughes AN4-074-DF Pointing adjustments on, Az/El cap, Pointing features on the Az/el cap, 1 of

Models: AN4-074-DF

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Pointing adjustments on

Pointing adjustments on	Figures 38 and 39 show the antenna parts that are used to adjust
Az/El cap	antenna azimuth, elevation, and polarization.
	Antenna reflector

Polarization scale

Holes for installing fine elevation tool

Elevation scale

Figure 38: Pointing features on the Az/el cap

Polarization nut (1 of 4)

Polarization scale

Canister

TOP label

	Clamp bolt	Elevation nut
		(one on each side)
	(1 of 3)

Elevation scale

Figure 39: Antenna adjustment locations

Chapter 5 • Pointing the antenna 1035567-0001 Revision A

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Image 59

Hughes AN4-074-DF Pointing adjustments on, Az/El cap, antenna azimuth, elevation, and polarization, Antenna reflector

Contents

1035567-0001 Revision A October Installation Manual forFor Consumer Installations 74 m Ku-bandAntenna Model AN4-074-DFTrademarks Copyright 2004, 2005 Hughes Network Systems, LLCDANGER Important safety informationTypes of warnings used in this manual DANGER Antenna installation safetyDANGER To avoid electric shock, stay at least 20 ft from power linesObserve these precautions to avoid exposure to RF radiation, a potential safety hazard Page viii Contents Chapter Chapter FiguresChapter ChapterChapter 30. Transmit and receive cable configurationsChapter Tables 1035567-0001Revision A Tablesxiii ChapterTables 1035567-0001Revision A Scope and audience Organization About this documentScope Revision recordDate of issue RevisionAntenna installation overview on page OverviewChapter Broadband satellite system componentsAntenna reflector Transmitter Feed arm Mast Figure 1 Installed .74 m antennaChapter 1 Overview 1035567-0001Revision A Radio not visible in optional shroud10.Install the antenna on the mount Antenna installation overview6.Assemble and install the Az/El cap 7.Install the radio on the feed armMount Installation Guide HNS Tasks related to antenna installationSelecting the installation site Installing the antenna mount GroundingAntenna kit components on page Antenna parts and required toolsAntenna kit components ChapterThe Az/El cap is shipped in a bag containing Figure 4 Feed arm unattached Figure 5 Radio assemblyFigure 7 Optional shroud for feed assembly Trimast or other antenna mountFigure 6 Trimast in various configurations Quantity Small hardware listDetails Details ToolsTool Assembling the Az/El cap on page Installing the radio and antenna assembliesChapter Determining the pointing values on pageDetermining the pointing values Assembling the Az/El cap 6.Repeat until all four bolts are installed Figure 12 Locating the polarization scale Installing the Az/El cap onto the antennaElevation Elevation reference edge Figure 14 Locating the elevation reference edgeFigure 15 Reading the elevation reference edge Elevation nut one on each sidePolarization Bottom of reflector Figure 18 The fine elevation pointing tool Installing 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 Figure 23 Securing the O-ring Installing the radio assembly on the feed armFeed assembly WaveguideTransmitter Connecting the feed arm to the antenna reflectorTo connect the feed arm to the antenna reflector Installing the antenna assembly onto the mast Attaching the optional shroud Side screw holes, one on each side Bottom screw Figure 29 Feed assembly with shroudFigure 28 Shroud screws Ground connection on page Cabling and connectionsChapter Routing the cables at the ODU on pageTransmitter Routing the cables at the ODUReceive cable Transmit cable Connecting the transmit and receive cables4.Secure the cable with cable ties Figure 33 Ground screw on the transmitter Ground connectionTransmit Fconnector, female Ground screw Not used Page Chapter Pointing the antennaAdjusting the antenna on page Isolating the transmit signal on pageAntenna pointing overview Using the installation softwarePeaking the signal Figure 34 OPI optional tool Cable connector DisplayPointing Interface Operating Instructions HNS Prerequisites for antenna pointing Polarization Adjusting the antennaAzimuth ElevationFigure 39 Antenna adjustment locations Pointing adjustments onAz/El cap Figure 38 Pointing features on the Az/el cap3/4-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 Fine-tunethe antenna elevation as follows Elevation2.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 Polarization c.Fully tighten the left nut torque to 12 ft-lbfIsolating the transmit signal 1.Loosen the two elevation nuts Removing the fine elevation pointing tool Final stepsAcronyms and abbreviations Page Index Index 1035567-0001Revision A Tasks related to antenna installation 4 Tool listTransmit cable connecting 33 routing