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Hughes AN6-074S Installation Manual

.74 m ku-band upgradeable antenna
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Hughes
Installation Manual for
.74 m Ku-band Upgradeable
Antenna Model AN6-074S
1036469-0001
Revision D
March 31, 2006

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Summary of Contents for Hughes AN6-074S

  • Page 1 Hughes Installation Manual for .74 m Ku-band Upgradeable Antenna Model AN6-074S 1036469-0001 Revision D March 31, 2006...
  • Page 2 Hughes Network Systems, LLC has made every effort to ensure the correctness and completeness of the material in this document. Hughes Network Systems, LLC shall not be liable for errors contained herein. The information in this document is subject to change without notice. Hughes Network Systems, LLC makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.

  • Page 3: Important Safety Information

    Important safety information For your safety and protection, read this entire installation manual before you attempt to install the satellite antenna. In particular, read this safety section carefully. Keep this safety information where you can refer to it if necessary. Types of warnings used This section introduces the various types of warnings used in this manual to alert you to possible safety hazards.

  • Page 4: Product Warning Labels

    This manual also includes additional safety alerts where safety appropriate concerning specific installation procedures. WARNING Only Hughes-certified installers can install or service Hughes earth stations and components. All Hughes-certified installers must expressly acknowledge the Hughes requirements for installations. DANGER...
  • Page 5 DANGER • To avoid electric shock, stay at least 20 ft from power lines. • If any part of the antenna or mount assembly comes in contact with a power line, call your local power company to remove it. Do not try to remove it yourself. Failure to heed these warnings could result in serious injury or death.
  • Page 6 CAUTION Observe these precautions to avoid exposure to RF radiation, a potential safety hazard: • The antenna must be installed in a location or manner not readily accessible to children and in a manner that prevents human exposure to potentially harmful levels of radiation.
  • Page 7 CAUTION • All installations of any type or size must carry an industry standard and government approved Radiation Hazard Caution label on the feed arm and on the back of the antenna reflector. • A fenced or roof installation in a commercial, industrial, or institutional environment must carry a Radiation Hazard Caution sign on the access door, gate, or permanently mounted access ladder that is within plain...
  • Page 8 • Important safety information viii 1036469-0001 Revision D...

  • Page 9: Table Of Contents

    Contents Important safety information ..... iii Types of warnings used in this manual ....iii Product warning labels .
  • Page 10 Installing a shim for vertical transmit polarization..14 Attaching the radio assembly to the feed arm ... .17 Attaching the reflector bracket to the reflector... .20 Attaching the feed arm to the reflector bracket .
  • Page 11 Acronyms and abbreviations .....49 Index .........51 •...
  • Page 12 • Contents 1036469-0001 Revision D...
  • Page 13 Figures Chapter 1 1. The .74 m satellite antenna installed on a trimast......2 Chapter 2 2. Antenna reflector ..........6 3.
  • Page 14 29. OPI block ............35 30.
  • Page 15 Tables Chapter 2 1. Hardware parts shipped with antenna........9 2.
  • Page 16 • Tables 1036469-0001 Revision D...

  • Page 17: About This Document

    About this document Scope and audience This manual explains how to assemble, install, and point the Hughes model AN6-074S antenna. It is written for qualified installers who are familiar with satellite antenna installation practices and are capable of properly applying the information presented.
  • Page 18 • About this document xviii 1036469-0001 Revision D...

  • Page 19: Overview

    Chapter 1 Overview The Hughes model AN6-074S .74 m antenna is designed for both Ku-band and Ka-band applications. This chapter presents an overview of the Hughes broadband satellite system, a summary of the antenna installation steps, and information about tasks related to antenna installation. These topics are included in the following sections: •...
  • Page 20 Figure 1 shows the .74 m antenna installed on a trimast mounted on a wall. Antenna reflector Az/el assembly Radio Feed arm Trimast (one of several possible mounting options) T0143012 Figure 1: The .74 m satellite antenna installed on a trimast Chapter 1 •...

  • Page 21: Antenna Installation Summary

    Antenna installation The antenna installation steps and related tasks are summarized below. The steps in bold type are documented in this manual. summary Perform tasks in the order they are presented in this manual (the same order as listed below). 1.

  • Page 22: Tasks Related To Antenna Installation

    Selecting the installation Factors you should consider in selecting an installation site are discussed in the Hughes Antenna Site Preparation and Mount site Installation Guide (1035678-0001). For enterprise business installations, the installation site may be specified in the customer-specific installation specification.

  • Page 23: Antenna Components, Tools, And Materials

    Chapter 2? Antenna components, tools, and materials This chapter describes the components and parts provided with the model AN6-074S antenna kit. It includes the following sections: • Antenna kit components on page 5 • Hardware and materials on page 9 •...

  • Page 24: Antenna Reflector

    Antenna reflector The antenna reflector is shown in Figure 2. Figure 2: Antenna reflector CAUTION Take care not to bend the antenna reflector. Prior to installation, do not place heavy objects on the antenna shipping box or antenna reflector. Reflector bracket The reflector bracket (Figure 3) attaches to the back of the antenna reflector.

  • Page 25: Polarization Plate

    Polarization plate The polarization plate (Figure 4) attaches to the front of the elevation bracket (Figure 5). The polarization plate, when loosened, allows you to rotate the reflector to adjust polarization. Figure 4: Polarization plate Elevation bracket and The elevation bracket includes a scale to help you adjust the antenna elevation.

  • Page 26: Feed Arm And Radio Assembly

    As shown in Figure 7, the trimast can be configured and manipulated in several ways to adapt it for mounting onto surfaces of various angles. For other suitable antenna mount options, see the Hughes Antenna Site Preparation and Mount Installation Guide (1035678-0001). Wall...

  • Page 27: Hardware And Materials

    1/2-in. drive (such as Ripley Co. P/N TW-207-AH-B). Long-shaft ball driver 3-mm Allen Shaft should be at least 5 in. long. wrench Compass Fine elevation pointing tool Hughes model DW-ELTOOL, P/N 1029130-0403. Chapter 2 • Antenna components, tools, and materials 1036469-0001 Revision D...
  • Page 28 Chapter 2 • Antenna components, tools, and materials 1036469-0001 Revision D...

  • Page 29: Assembling And Installing The Antenna

    Chapter 3 Assembling and installing the antenna This chapter includes: • Unpacking the antenna on page 11 • Assembling the antenna on page 11 • Mounting the antenna on page 22 Unpacking the antenna To avoid possible damage, leave the antenna in its protective packaging until you are ready to install it.

  • Page 30: Attaching The Polarization Plate

    Attaching the polarization Assemble the polarization adjustment assembly by attaching the polarization plate to the front of the elevation bracket, through the plate reflector bracket, as shown in Figure 8. 1. Place the polarization plate into the circular hole in the reflector bracket, as shown in Figure 8, with the raised outer edge of the polarization plate facing away from the elevation bracket.
  • Page 31 3. Before installing the polarization plate, tighten the four bolts that secure the elevation bracket to the canister. See Figure 9. If you don’t tighten these bolts, you may have difficulty placing the polarization plate into the reflector bracket (step 4). 4.

  • Page 32: Installing A Shim For Vertical Transmit Polarization

    Figure 10: Shim location next to TRIA To replace the horizontal shim with a vertical shim, follow these steps: 1. Obtain a vertical transmit polarization shim kit (Hughes model VTX-SHIM-KIT, P/N 1033809-0001). Figure 11 on page 15 shows what a vertical shim looks like.

  • Page 33: Horizontal Shim And Vertical Shim For Transmit Polarization

    Figure 11 illustrates the difference between the horizontal shim and vertical shim. Note the positions of the alignment pins. TRIA Horizontal shim in place Vertical shim in place (In this photograph, the TRIA has not yet been rotated.) Alignment O-ring pins Alignment pins...
  • Page 34 you can insert the shim alignment pins into the waveguide end plate. See Figures 12 and 13. Figure 12: Direction of TRIA rotation for vertical polarization Figure 13 shows how the TRIA is positioned for horizontal transmit polarization compared to how it is positioned for vertical transmit polarization.

  • Page 35: Attaching The Radio Assembly To The Feed Arm

    6. Make sure the O-ring shown in Figure 12 on page 16 is in place in the shim. Note: Be sure to install the O-ring. 7. With the TRIA correctly positioned (rotated), place the waveguide end plate against the shim. 8.
  • Page 36 3. Place the O-ring in the circular depression in the square end of the feed horn. See Figure 15. Note: Be sure to install the O-ring. Figure 15: O-ring on back end of feed horn 4. Position the feed arm so the transmitter mounting brackets rest on top of the transmitter, as shown in Figure 16.

  • Page 37: Attaching The Radio Assembly To The Feed Horn

    7. Align the square end of the feed horn (Figure 15) with the square end of the TRIA. Make sure the feed horn O-ring stays in place. 8. Hold the feed horn end and the TRIA end together, and insert four M4 Allen screws with lock washers as shown in Figure 17.

  • Page 38: Attaching The Reflector Bracket To The Reflector

    Attaching the reflector Fasten the reflector bracket (with polarization plate and elevation bracket attached) to the elliptical antenna reflector: bracket to the reflector CAUTION Take care not to bend the reflector. 1. Insert five 5/16-18 x ¾ UNC carriage bolts through the front of the reflector and the five tabs located on the rim of the reflector bracket.

  • Page 39: Attaching The Feed Arm To The Reflector Bracket

    Attaching the feed arm to Attach the feed arm (with radio attached) to the reflector bracket: the reflector bracket 1. Slide the feed arm and radio assembly into the slots at the bottom of the reflector bracket, aligning the four bolt holes. See Figure 20.

  • Page 40: Mounting The Antenna

    After the antenna assembly is complete, follow the steps below to mount the antenna onto the mast. The mast must be mounted using only the mount types described in the Hughes Antenna Site Preparation and Mount Installation Guide (1035678-0001). The mount may be a trimast, a non-penetrating mount, or a pole mount.
  • Page 41 2. Slide the canister onto the top of the mast as shown in Figure 21. 3. Secure the canister by tightening the nuts on the three canister flange bolts. 4. Hand-tighten the flange nuts. Canister Canister flange bolts (3) Elevation bracket Figure 21: Sliding the antenna assembly onto the mast Chapter 3 •...

  • Page 42: Installing The Fine Elevation Pointing Tool

    Installing the fine elevation Install the fine elevation pointing tool (Hughes P/N 1029130-0403) onto the back of the elevation bracket, as shown pointing tool in Figure 22. You install and use this tool for pointing; then remove for re-use in subsequent installations.

  • Page 43: Cabling And Connections

    Use only the Hughes-approved connectors listed in Hughes Field Service Bulletin 050518_01A. Note: Fill all outdoor connectors with dielectric grease before connecting them to the ODU or ground block. See Hughes Field Service Bulletin 050518_01A for a list of Hughes-approved dielectric grease vendors.

  • Page 44: Routing The Cables At The Odu

    Routing the cables at Route the coaxial transmit and receive cables at the ODU as follows: the ODU 1. Route the transmit cable to the back of the transmitter in a configuration similar to that shown in Figure 23. Leave 32 in. of extra length on the transmit cable. This makes it possible to install a future Ka-band radio upgrade.

  • Page 45: Connecting The Transmit And Receive Cables

    Connecting the transmit This section explains how to connect the transmit and receive cables to the radio assembly. and receive cables Transmit cable Connect the transmit cable to the transmitter as follows: 1. From inside the building, disconnect the IDU power supply. 2.

  • Page 46: Receive Cable

    Receive cable Connect the receive cable to the LNB as follows: 1. Connect the receive cable (marked with red tape) to the LNB connector, which is shown in Figure 25. LNB (receive) connector (female F connector) Figure 25: Connecting the receive cable to the LNB 2.

  • Page 47: Ground Connection

    Ground connection Figure 26 shows the location of the ground screw on the transmitter. Ground the transmitter and mast. For grounding procedures, refer to your training, best grounding practices, and applicable parts of the NEC. Note: Wrap the ground wire clockwise around the ground screw so that the screw head tightens against the wire.
  • Page 48 Chapter 4 • Cabling and connections 1036469-0001 Revision D...

  • Page 49: Pointing The Antenna

    Chapter 5 Pointing the antenna This chapter explains how to point the antenna and connect the transmitter. Topics include: • Antenna pointing overview on page 32 • Prerequisites for antenna pointing on page 35 • Adjusting the antenna on page 36 •...

  • Page 50: Antenna Pointing Overview

    Antenna pointing This chapter describes a general procedure for pointing the antenna. The objectives for antenna pointing are to: overview • Locate and detect the satellite signal • Peak the signal to achieve the greatest possible signal strength Determining the pointing Before proceeding, use the installation software to determine the initial values to use for setting azimuth, elevation, and values...

  • Page 51: Peaking The Signal

    Isolating the transmit signal fine tunes the antenna alignment for the strongest possible signal received by the Hughes Network Operations Center (NOC). Both processes are explained later in this chapter. To point the antenna, you go through cycles of making small adjustments to the antenna until you are satisfied you cannot get a stronger satellite signal.

  • Page 52: Outdoor Pointing Interface

    Outdoor pointing interface The OPI, shown in Figure 27, is an optional tool that eliminates the need for a laptop computer on the roof. It is a portable repeater that displays the same values that are shown on the computer running the installation software. Cable connector Display...

  • Page 53: Opi Block

    OPI block If you use an OPI with a model RA6-074 or RC6-074 radio assembly, you must use a 22-kHz block (filter). This block, illustrated in Figure 29, is included in the OPI kit. Its model number is OPI-Block 22 KHZ-BLOCK. Male Female connector –...

  • Page 54: Adjusting The Antenna

    Adjusting the antenna To point the antenna you make three adjustments: • Polarization – Rotational adjustment • Elevation – Adjustment up and down • Azimuth – Side-to-side adjustment These adjustments are illustrated in Figure 30. The corresponding mechanical adjustments on the antenna are explained in the sections that follow.

  • Page 55: Adjusting Polarization

    Adjusting polarization Polarization refers to rotation of the antenna, as shown in Figure 31). Polarization values are measured in degrees from zero (no rotation), positive or negative. Polarization is positive east of the satellite longitude and negative west of the satellite longitude.
  • Page 56 Fine-tune polarization as follows: 1. Loosen the four polarization lockdown nuts (two are shown in Figure 32) just enough so you can rotate the antenna reflector a few degrees in each direction. Note: If you loosen the bolts too much, they can fall inside the reflector bracket, where they are hard to reach.

  • Page 57: Adjusting Elevation

    Adjusting elevation Figure 33 illustrates how you adjust the antenna elevation by moving the antenna up and down. Elevation Elevation T0143007 Figure 33: Adjusting elevation Figure 34 illustrates the mechanical elevation adjustments on the antenna. Fine elevation pointing tool Fine Coarse - Coarse adjustment (1 nut on each side of the bracket) Fine - Fine elevation adjustment nuts...

  • Page 58: Coarse Elevation Adjustment

    Adjust the elevation as follows: Coarse elevation adjustment First set the elevation to a coarse setting: 1. Loosen the nut just below the elevation scale, and loosen the nut on the opposite side of the elevation bracket. (See Figures 34 and 35.) 2.
  • Page 59 4. Adjust azimuth, then elevation, then azimuth again and continue until there is no improvement in signal strength. 5. Tighten the three canister flange nuts—however, because tightening them can cause loss of signal strength, monitor the signal strength while tightening these nuts in the following sequence: a.

  • Page 60: Setting Azimuth

    Setting azimuth To prepare for pointing, set the antenna azimuth. Setting azimuth Figure 36 illustrates how you adjust antenna azimuth by moving the antenna from side to side. Negative (-) Positive (+) Azimuth T0143018 Figure 36: Adjusting the antenna azimuth Figure 37 illustrates how you loosen the canister so you can adjust the antenna for azimuth.
  • Page 61 Figure 37 shows the location of these nuts. Loosen the nuts only enough to allow the antenna assembly to rotate. Canister Loosen nuts at locations indicated by arrows. View from behind reflector T0143015 Figure 37: Loosening the canister nuts 3. Stand behind the antenna, grasp the outer edges of the antenna, and rotate the antenna assembly about the mast (as indicated in Figure 38) until the reflector is pointed toward the azimuth heading.

  • Page 62: Receive Pointing

    Note: To minimize adjustments later, try not to move the antenna from the azimuth heading as you perform the steps in the following sections. Receive pointing Receive pointing peaks the receive signal. You must peak the signal even if the antenna is locked to it. Use the installation software to check the signal strength.

  • Page 63: Peaking The Signal

    5. If there is no signal, sweep back 1/8 in. at a time to the left until you detect a signal. If you cannot detect a signal, there may be an error. If there is no signal, perform the following checks. –...

  • Page 64: Isolating The Transmit Signal

    Isolating the transmit To prevent signal cross talk, you use a procedure known as Automated Cross Polarization (ACP) to isolate the transmit signal signal from the receive signal. ACP test functions are included in the installation software. The ACP software operates in two different modes—manual or automatic.

  • Page 65: Automatic Acp Test

    If the manual ACP test passes, stop the test and proceed to Automatic ACP test on page 47. If the manual ACP test fails after you adjust the elevation, let the test continue and follow these steps: 1. Mark the present azimuth position so you can return to it. 2.

  • Page 66: Final Steps

    If the antenna passes the automatic ACP test, but the signal strength drops more than 3 points after the test, you must repeat the fine adjustments for azimuth and elevation: 1. Repeat the fine adjustments for both azimuth and elevation to maximize the signal strength.

  • Page 67: Acronyms And Abbreviations

    OPI – Outdoor pointing interface ft – Foot ft-lbf – Foot-pound force P/N – Part number hr – Hour RF – Radio frequency Hughes SBC – Satellite-based commissioning IDU – Indoor unit sec – Second IFL – Inter-facility link in. – Inch TRIA –...
  • Page 68 • Acronyms and abbreviations 1036469-0001 Revision D...
  • Page 69 Index ties (cable ties) Canister Acronyms attaching to the mast Adjusting 1, 5 Components 42, 44 azimuth Connecting cables elevation receive cable to LNB polarization transmit cable to transmitter Antenna Connectors adjusting approved types assembling 25, 28 dielectric grease 1, 5 components for receive cable installation...
  • Page 70 Pointing fine elevation pointing tool Hardware (small parts) general procedure isolating the transmit signal parameters (polarization, elevation, and azimuth) IFL connector 33, 45 peaking the signal Installation personnel requirements site prerequisites summary receive pointing Installing safety precautions antenna mount Polarization final steps adjusting fine elevation pointing tool...
  • Page 71 torque wrench specifications Transmit cable, connecting to the transmitter Transmit polarization shim Transmit signal, isolating Transmitter connecting mounting on the feed arm TRIA attaching to feed horn positions for vertical or horizontal polarization rotating for vertical polarization and shim Trimast illustrated Unpacking the antenna Vertical transmit polarization shim...
  • Page 72 • Index 1036469-0001 Revision D...

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