Manuals / Hughes / Home Audio / Radio Antenna

Hughes AN4-074-DF Antenna parts and required tools, Antenna kit components, Chapter

Models: AN4-074-DF

1 72

Download 72 pages 51.64 Kb

Page 21

Antenna parts and required tools

Chapter 2

Antenna parts and required tools

Antenna kit components

This chapter describes the components and parts provided with the model AN4-074-DF antenna kit. It includes the following sections:

•Antenna kit components on page 5

•Small hardware list on page 9

•Tools on page 10

This section identifies and describes the key components of the

.74 m antenna kit. For an illustration of an installed .74 m antenna, see Figure 1 on page 2.

The key components are:

•Azimuth/elevation (Az/El) cap

•Antenna reflector

•Feed arm and radio assembly

Related components:

•Trimast or other mount

•Optional shroud

Chapter 2 • Antenna parts and required tools 1035567-0001 Revision A

5

Image 21

Hughes AN4-074-DF installation manual Antenna parts and required tools, Chapter, Antenna kit components on page

Contents

For Consumer Installations Installation Manual for74 m Ku-bandAntenna Model AN4-074-DF 1035567-0001 Revision A OctoberTrademarks Copyright 2004, 2005 Hughes Network Systems, LLCImportant safety information Types of warnings used in this manualDANGER 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 Chapter30. Transmit and receive cable configurations ChapterChapter xiii TablesChapter Tables 1035567-0001Revision ATables 1035567-0001Revision A Scope and audience Organization About this documentDate of issue Revision recordRevision ScopeChapter OverviewBroadband satellite system components Antenna installation overview on pageChapter 1 Overview 1035567-0001Revision A Figure 1 Installed .74 m antennaRadio not visible in optional shroud Antenna reflector Transmitter Feed arm Mast6.Assemble and install the Az/El cap Antenna installation overview7.Install the radio on the feed arm 10.Install the antenna on the mountSelecting the installation site Tasks related to antenna installationInstalling the antenna mount Grounding Mount Installation Guide HNSAntenna kit components Antenna parts and required toolsChapter Antenna kit components on pageThe Az/El cap is shipped in a bag containing Figure 4 Feed arm unattached Figure 5 Radio assemblyTrimast or other antenna mount Figure 6 Trimast in various configurationsFigure 7 Optional shroud for feed assembly Small hardware list DetailsQuantity Tools ToolDetails Chapter Installing the radio and antenna assembliesDetermining the pointing values on page Assembling the Az/El cap 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 Figure 15 Reading the elevation reference edge Figure 14 Locating the elevation reference edgeElevation nut one on each side Elevation reference edgePolarization 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 Figure 29 Feed assembly with shroud Figure 28 Shroud screwsSide screw holes, one on each side Bottom screw Chapter Cabling and connectionsRouting the cables at the ODU on page Ground connection on pageRouting the cables at the ODU Receive cableTransmitter Transmit cable Connecting the transmit and receive cables4.Secure the cable with cable ties Ground connection Transmit Fconnector, female Ground screw Not usedFigure 33 Ground screw on the transmitter Page Adjusting the antenna on page Pointing the antennaIsolating the transmit signal on page ChapterUsing the installation software Peaking the signalAntenna pointing overview Figure 34 OPI optional tool Cable connector DisplayPointing Interface Operating Instructions HNS Prerequisites for antenna pointing Azimuth Adjusting the antennaElevation PolarizationAz/El cap Pointing adjustments onFigure 38 Pointing features on the Az/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 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 Tasks related to antenna installation 4 Tool list Transmit cable connecting 33 routingIndex 1035567-0001Revision A