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ViaSat 8116 Series Installation And Operation Manual

16-/18-meter earth station antenna
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Series 8116/8118
16-/18-Meter Earth Station Antenna
Installation and Operation Guide
Manual Part No.42S183D
April 2004

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  • Page 1 Series 8116/8118 16-/18-Meter Earth Station Antenna Installation and Operation Guide Manual Part No.42S183D April 2004...
  • Page 2 ViaSat, Inc. The information in this document is subject to change without notice. ViaSat, Inc. assumes no responsibility for any errors that may appear in this document and does not warranty any specific application. Any product names mentioned herein are used for identification purposes only, and may be trademarks and/or registered trademarks of their respective companies.

  • Page 3: Table Of Contents

    ____________________________________________________________________________________________ TABLE OF CONTENTS NOTE For a further or more detailed breakdown of section contents, refer to the title page of each section. SECTION 1 GENERAL INFORMATION Introduction to Manual Description Wind Load Options Specifications SECTION 2 LOWER MOUNT INSTALLATION PROCEDURES General What to do About Visible Loss or Damage What to do About Concealed Damage...
  • Page 4 TABLE OF CONTENTS ____________________________________________________________________________________________ SECTION 3 UPPER MOUNT INSTALLATION PROCEDURES General Azimuth Drive Anchor Installation Rotating Frame Installation 3-14 Azimuth Drive Installation 3-19 Elevation Drive Installation 3-22 Hub Assembly and Installation 3-22 Hub Assembly 3-23 Hub Installation 3-29 Installing Guardrails and Ladders 3-29 Ladders Installation 3-29...
  • Page 5 TABLE OF CONTENTS ____________________________________________________________________________________________ SECTION 6 MAINTENANCE General Periodic Maintenance Weekly Maintenance Monthly Maintenance Bi-Monthly Maintenance Yearly Maintenance Corrosion Protection SECTION 7 OPTIONS General Feed Options Lightning Protection APPENDIX A INSTALLATION CHECKLIST WITH MANUAL PAGE REFERENCES APPENDIX B MECHNCIAL ALIGNMENT SPECIFICATION AND REPORT FOR 16/18-METER LIMITED MOTION ANTENNA (479820A) APPENDIX C...

  • Page 7: General Information

    SECTION 1 GENERAL INFORMATION Introduction to Manual Description Wind Load Options Specifications 42S183D Series 8116/8118 16-/18-Meter Earth Station Antenna...

  • Page 9: Introduction To Manual

    ____________________________________________________________________________________________ SECTION 1 GENERAL INFORMATION INTRODUCTION TO This manual contains information needed to properly install, operate, and maintain the 16-/18-Meter (16/18M) Earth Station MANUAL Antenna. This section contains general information on the 16/18M antenna. Sections 2 through 4 contain information pertaining to 16/18M antenna installation.
  • Page 10 GENERAL INFORMATION ____________________________________________________________________________________________ Figure 1-1. 16-/18-Meter Motorized Antenna ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...

  • Page 11: Wind Load Options

    GENERAL INFORMATION ____________________________________________________________________________________________ The mount for both the 16- and 18-meter antennas is the same elevation-over-azimuth pedestal. The elevation travel limits can be set at any points between 0 and 90 degrees. The azimuth travel range is a full 360 degrees covered in six overlapping sectors. Size 11 resolvers are supplied for position readout.

  • Page 12: Specifications

    GENERAL INFORMATION ____________________________________________________________________________________________ The 16-meter antenna will operate or drive to stow in winds up to 110 miles per hour (175 km/h). It will survive in any position in winds up to 125 miles per hour (200 km/h). In the stow position, the antenna will survive winds up to 175 miles per hour (280 km/h).
  • Page 13 GENERAL INFORMATION ____________________________________________________________________________________________ SPECIFICATIONS Continued Function/Item Specification Electrical Operating Frequency Receive 3.625 to 4.200 GHz Transmit 5.850 to 6.425 GHz Feed Type Corrugated horn, frequency-reuse Polarization Dual Circular Gain at Midband (referenced to diplexer output ports) Receive 55.2 + 20 log (f/4.0) dBi, 16-Meter 56.4 + 20 log (f/4.0) dBi, 18-Meter Transmit 58.8 + 20 log (f/6.175) dBi, 16-Meter...
  • Page 14 GENERAL INFORMATION ____________________________________________________________________________________________ SPECIFICATIONS Continued Function/Item Specification Electrical - continued Pointing Error 0.028° rms [with winds of 30 mi/h (48 km/h)gusting to 45 mi/h (72km/h) (1ß)] 0.040° rms [with winds of 45 mi/h (72km/h)gusting to 60 mi/h (95 km/h) (1ß)] Tracking Error 0.02°...

  • Page 15: Lower Mount Installation Procedures

    SECTION 2 LOWER MOUNT INSTALLATION PROCEDURES General What to do about Visible Loss or Damage What to do about Concealed Damage How to Inventory Equipment Received How to Return Equipment General Mechanical Safety Summary General Electrical Safety Summary Recommended Tools and Equipment Recommended Installation Sequency 2-10 Recommended Torque Values...

  • Page 17: General

    At the time of shipment, the carrier assumes responsibility for its safe delivery; therefore, do not return damaged units to ViaSat. Instead, file a claim with the carrier as noted in the paragraphs following the initial unpacking procedure given below: Inspect shipping carton for visible damage.

  • Page 18: How To Inventory Equipment Received

    Absence of the RMA number will cause a delay in processing your equipment for repair. Be sure to include the RMA number in all correspondence. NOTE ViaSat Inc will not accept freight collect. Be sure to ship all items freight prepaid. ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...

  • Page 19: General Mechanical Safety Summary

    LOWER MOUNT INSTALLATION PROCEDURES WARNING __________________________________________ Electrical shock from voltages used in this system can cause injury or death. Prior to making any electrical connections or performing maintenance and repair, ensure power is removed. Electrical connections should be made only by qualified personnel in accordance with local regulation.

  • Page 20: Emergency Plan

    LOWER MOUNT INSTALLATION PROCEDURES WARNING __________________________________________ Overhead hazards, either because items may fall because person strike them unintentionally, are typical around construction sites or during installation of large antennas. It is prudent to adopt the following rules: 1. Never stand underneath anything while it is being hoisted.

  • Page 21: Resuscitation

    Tables 2-1 through 2-4 list the tools and equipment needed for RECOMMENDED TOOLS AND installing ViaSat’s 16 or 18 meter antenna. Table 2-1 is a list of EQUIPMENT hand tools. Table 2-2 is a list of on-site requirements such as cranes, steel chokers, and an air compressor.
  • Page 22 LOWER MOUNT INSTALLATION PROCEDURES Table 2-1. Hand Tools Required for Installation Quantity Description 1 Set* Combination wrenches up to 1 inch size 1 Each* 3/4 inch combination wrench 1 Each* 7/8 inch combination wrench 1 Each* 1 1/16 inch combination wrench 1 Each 1 1/8 inch combination wrench 1 Each*...
  • Page 23 LOWER MOUNT INSTALLATION PROCEDURES Table 2-1. Hand Tools Required for Installation - continued Quantity Description 2 Each Large slaver bar 2 Each Crow (wrecking) bar 1 Each Pry bar 1 Each Band cutter 1 Each Hacksaw 6 Each Hacksaw blade 1 Each Automatic center punch 1 Each...
  • Page 24 LOWER MOUNT INSTALLATION PROCEDURES Table 2-2. On-Site Machinery and Equipment Required for Installation Quantity Description 1 Each* 45 ton crane with a 100 foot boom 4 Each 15 foot steel choker, 3/4 inch wire diameter 2 Each 20 foot steel choker, 1 inch wire diameter 4 Each Small, medium, and large shackles 1 Each...

  • Page 25: Recommended Installation Sequency

    LOWER MOUNT INSTALLATION PROCEDURES Table 2-4. Installation Aids, Rigging, and Expendable Items Required - continued Quantity Description 1 Each * 3/4 inch drive electric impact wrench 1 Each* 1/2 inch drive air impact wrench (if a compressor is available) 1 Each* 3/4 inch drive air impact wrench (if a compressor is available) 1 Each Cordless 3/8 inch drive drill motor with charger...

  • Page 26: Recommended Torque Values

    LOWER MOUNT INSTALLATION PROCEDURES RECOMMENDED The following list contains the recommended torque values for all TORQUE VALUES antenna fasteners. CAUTION __________________________________________ Do not torque any fasteners until specifically directed to torque a fastener. As fasteners are installed, tighten finger tight only. __________________________________________ 1 1/4-inch Fasteners 1100 ft-lbs (1491 Nm)
  • Page 27 LOWER MOUNT INSTALLATION PROCEDURES Figure 2-1. Completed Mount Assembly With Hub ____________________________________________________________________________________________ 42S183D 2-11 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...

  • Page 28: Azimuth Bearing Ring Assembly

    LOWER MOUNT INSTALLATION PROCEDURES Azimuth Bearing Ring The platform plate is assembled on the ground and then installed on the top of the mount after the columns are erected during the Assembly frame installation procedure. Assemble the azimuth bearing ring assembly in accordance with the following procedure.

  • Page 29: Leg Installation

    LOWER MOUNT INSTALLATION PROCEDURES Leg Installation The leg assembly must be properly aligned and installed for all assemblies to properly fit together. Install the legs and associated frame assemblies in accordance with the following procedure. WARNING __________________________________________ The following assemblies weigh from 135 lbs (61 kg) to 15355 lbs (16965 kg).

  • Page 30: Bottom Skin Plate Installation

    LOWER MOUNT INSTALLATION PROCEDURES Bottom Skin Plate The bottom skin angles, door skin angles, lower skin tees, lower Installation door tees, lower skins, and lower door skins (items 3, 4, 5, 7, 11, and 13 in Figure 2-3) are installed prior to installation of the optional mezzanine and stairway.

  • Page 31: Mezzanine Installation (Optional)

    LOWER MOUNT INSTALLATION PROCEDURES Mezzanine The optional mezzanine is installed at this time to aid in attaching Installation (Optional) the top skin plates and aligning the azimuth bearing ring assembly. Install the mezzanine in accordance with the following procedure and Figure 2-4. NOTE Leave all fasteners hand tight until directed to torque fasteners.
  • Page 32 LOWER MOUNT INSTALLATION PROCEDURES 13. Lift stairway opening beam into position between beams B and F. 14. Align four holes in end plates with holes in beams B and F and secure with screw, two flat washers, and nut (item 104, 102, and 101). Hand tighten.
  • Page 33 LOWER MOUNT INSTALLATION PROCEDURES Ships Ladder The optional ships ladder is first assembled on ground, then hoisted Assembly and into position and installed in the mount. Perform the following procedures to assemble and install the ships ladder (refer to Figure Installation (Optional) 2-5).
  • Page 34 LOWER MOUNT INSTALLATION PROCEDURES Install top mount (item 3) between right hand and left hand stringer at end of stringers which will be raised to join with the mezzanine floor. Secure with screw, two flat washers, and nut (item 103, 104, and 105) at both ends of top mount.
  • Page 35 LOWER MOUNT INSTALLATION PROCEDURES SHIPS LADDER INSTALLATION Attach hoist to ships ladder (see Figure 2-5). Lift ships ladder into position in the stair opening (across the mount from door opening). Align three top mount holes at top of ladder with stairway header beam holes.
  • Page 36 LOWER MOUNT INSTALLATION PROCEDURES NOTE The grating may be lifted into place by hand or with the crane. The stair landing grating and corner gratings weigh 20 lbs (9 kg) each and the center gratings weigh 100 lbs (45 kg) each. MEZZANINE GRATING Attach hoist to stair landing grating (item 13, Figure 2-4).
  • Page 37 LOWER MOUNT INSTALLATION PROCEDURES 18. Remove hoist from grating. 19. Attach hoist to center grating C (item 20). 20. Lift grating into position on mezzanine at center (near doorway). 21. Remove hoist from grating. 22. Attach hoist to center grating B (item 16). 23.
  • Page 38 LOWER MOUNT INSTALLATION PROCEDURES Secure the middle door mount skin to the lower door tee, two places each side of door opening, using bolt, two flat washers, and nut (item 105, 103, and 104). Hand tighten. 10. Lift upper mount skin into position using hoist. Locate between two legs.
  • Page 39 LOWER MOUNT INSTALLATION PROCEDURES Tighten middle mount skin panels to leg fasteners to 600 ft-lbs (813 Nm). Tighten from top down. Tighten middle mount skin panels to lower skin tee fasteners to 600 ft- lbs (813 Nm). 10. Tighten lower mount skin panels to lower skin tee fasteners to 600 ft- lbs (813 Nm).
  • Page 40 LOWER MOUNT INSTALLATION PROCEDURES After the mount is torqued the mount door and frame should be Door Assembly and assembled and then installed from the inside of the mount in accordance Installation with the following procedures. From inside mount, place right door skin (item 14, Figure 2-3) with small end pointing toward door opening and short flange on floor and turned toward outside of door.
  • Page 41 LOWER MOUNT INSTALLATION PROCEDURES 16. Drill one pilot hole near bottom of each side door frame and install self tapping screws (item 106). NOTE These two screws will be removed at a later procedure. 17. Set door assembly and side skins up in a vertical position. 18.
  • Page 42 LOWER MOUNT INSTALLATION PROCEDURES Figure 2-2. Azimuth Bearing Ring Assembly, 483183 ____________________________________________________________________________________________ 2-26 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 43 LOWER MOUNT INSTALLATION PROCEDURES Figure 2-3. 16/18-Meter Mount Assembly (Sheet 1 of 3), 483184A ____________________________________________________________________________________________ 42S183D 2-27 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 44 LOWER MOUNT INSTALLATION PROCEDURES Figure 2-3. 16/18-Meter Mount Assembly (Sheet 2 of 3), 483184A ____________________________________________________________________________________________ 2-28 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 45 LOWER MOUNT INSTALLATION PROCEDURES Figure 2-3. 16/18-Meter Mount Assembly (Sheet 3 of 3), 483184A ____________________________________________________________________________________________ 42S183D 2-29 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 46 LOWER MOUNT INSTALLATION PROCEDURES Figure 2-4. 16/18-Meter Mezzanine Installation, 512020 ____________________________________________________________________________________________ 2-30 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 47 LOWER MOUNT INSTALLATION PROCEDURES Figure 2-5. 16/18-Meter Stairway Installation, 483185 ____________________________________________________________________________________________ 42S183D 2-31 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 48 LOWER MOUNT INSTALLATION PROCEDURES GROUTING Grout is used between the concrete foundation surface and the six BASEPLATE AND base plates to ensure a rigid, load-bearing connection between the mount and the foundation. Grout may also be placed between the SKIN PLATE TO concrete foundation and the bottom bracket on the bottom skin FOUNDATION plates to ensure rigidity but is not required structurally.
  • Page 49 LOWER MOUNT INSTALLATION PROCEDURES Cold Weather Temperatures below 55°F (13°C) slow the hardening process and Grouting keep the grout in a flowable state long enough to permit settlement and bleeding. Although grouting may be successfully accomplished at ambient temperatures as low as 45°F (7°C), the rate of strength gain (hardening) is slow and the required time on- site may be excessive.
  • Page 50 LOWER MOUNT INSTALLATION PROCEDURES Pour grout into a five gallon bucket (0.019 cubic meter) or equivalent mixing container and slowly add water. Stir the mix and add grout or water as required to obtain a good paste. NOTE Be sure to mix enough grout to complete each pad (or bottom plate) at one time.
  • Page 51 LOWER MOUNT INSTALLATION PROCEDURES Figure 2-6. Location of Grouting ____________________________________________________________________________________________ 42S183D 2-35 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 53 SECTION 3 UPPER MOUNT INSTALLATION PROCEDURES General Azimuth Drive Anchor Installation Rotating Frame Installation 3-14 Azimuth Drive Installation 3-19 Elevation Drive Installation 3-22 Hub Assembly and Installation 3-29 Installation Guardrails and Ladders 42S183D Series 8116/8118 16-/18-Meter Earth Station Antenna...
  • Page 55 ____________________________________________________________________________________________ SECTION 3 UPPER MOUNT INSTALLATION PROCEDURES This section contains procedures for installing the upper mount GENERAL hardware. This hardware includes the rotating frame, azimuth/elevation drives, hub, and work platform of the 16-/18-Meter Earth Station Antenna. The installation of the lower mount is contained in Section 2 and the installation of the reflector, spars, subreflector, and feed is contained in Section 4.
  • Page 56 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Using hoist, lift azimuth frame and alignment assembly onto selected location and attach azimuth frame and alignment assembly using 34 hex head bolts (item 113), 2 hex head bolts (item 102), and 36 flat washers (item 103). NOTE Two bolts (item 102) will be used later to install LSR beam assembly.
  • Page 57 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-1. Installing Upper Mount (Sheet 1 of 5), 512560B ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 58 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-1. Installing Upper Mount (Sheet 2 of 5), 512560B ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 59 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-1. Installing Upper Mount (Sheet 3 of 5), 512560B ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 60 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-1. Installing Upper Mount (Sheet 4 of 5), 512560B ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 61 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-1. Installing Upper Mount (Sheet 5 of 5), 512560B ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 62 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-2. Azimuth Frame and Alignment Assembly (Sheet 1 of 4), 511960C ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 63 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-2. Azimuth Frame and Alignment Assembly (Sheet 2 of 4), 511960C ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 64 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-2. Azimuth Frame and Alignment Assembly (Sheet 3 of 4), 511960C ____________________________________________________________________________________________ 3-10 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 65 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-2. Azimuth Frame and Alignment Assembly (Sheet 4 of 4), 511960E ____________________________________________________________________________________________ 42S183D 3-11 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 66 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-3. Elevation Axis Clevis Alignment (Sheet 1 of 2), 477689B ____________________________________________________________________________________________ 3-12 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 67 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-3. Elevation Axis Clevis Alignment (Sheet 2 of 2), 477689B ____________________________________________________________________________________________ 42S183D 3-13 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 68 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ AZIMUTH DRIVE Perform the following procedure to install the azimuth drive INSTALLATION assembly. (Figure 3-1 contains installation information and Figure 3-4 provides the azimuth drive/clevis assembly information.) The azimuth drive can be installed later, if desired, so that the reflector installation can proceed.
  • Page 69 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Torque azimuth assembly fasteners to the following values: 1 1/4-inch fasteners 1100 ft-lbs (1491 Nm) 3/8-inch fasteners 31 ft-lbs (42 Nm) 5/16-inch fasteners 24 ft-lbs (33 Nm) ____________________________________________________________________________________________ 42S183D 3-15 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 70 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-4. Azimuth Drive/Clevis Assembly (Sheet 1 of 3), 512010 ____________________________________________________________________________________________ 3-16 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 71 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-4. Azimuth Drive/Clevis Assembly (Sheet 2 of 3), 512010 ____________________________________________________________________________________________ 42S183D 3-17 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 72 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-4. Azimuth Drive/Clevis Assembly (Sheet 3 of 3), 512010 ____________________________________________________________________________________________ 3-18 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 73 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ ELEVATION DRIVE Perform the following procedure to install the elevation drive assembly. (Figure 3-1 contains installation information and Figure INSTALLATION 3-5 provides the elevation actuator assembly information.) Attach hoist to elevation drive assembly (item 9 or 24). WARNING __________________________________________ The elevation drive assembly weighs 4500 lbs...
  • Page 74 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-5. Elevation Drive Assembly (Sheet 1 of 2), 482655D ____________________________________________________________________________________________ 3-20 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 75 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-5. Elevation Drive Assembly (Sheet 2 of 2), 482655E ____________________________________________________________________________________________ 42S183D 3-21 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 76 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ HUB ASSEMBLY AND Prior to installing the hub, it must be assembled on the ground. INSTALLATION The hub can be assembled at any convenient time prior to installation. Perform the following procedures to assemble and install the hub.
  • Page 77 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Attach three hub segment braces (item 6) on each corner of hub segments using 10 bolts (item 100), 20 washers (item 101), and 10 nuts (item 102) on each brace. Attach rear left brace (item 7) and rear right brace (item 8) using 13 bolts (item 103), 26 washers (item 107), and 13 nuts (item 108) on each brace as shown in Figure 3-6.
  • Page 78 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-6. Assembling Hub (Sheet 1 of 5), 512015B ____________________________________________________________________________________________ 3-24 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 79 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-6. Assembling Hub (Sheet 2 of 5), 512015B ____________________________________________________________________________________________ 42S183D 3-25 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 80 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-6. Assembling Hub (Sheet 3 of 5), 512015B ____________________________________________________________________________________________ 3-26 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 81 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-6. Assembling Hub (Sheet 4 of 5), 512015B ____________________________________________________________________________________________ 42S183D 3-27 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 82 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-6. Assembling Hub (Sheet 5 of 5), 512015B ____________________________________________________________________________________________ 3-28 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 83 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ INSTALLING This procedure includes mounting the ladders from the mount GUARDRAILS AND mezzanine to the rotating frame and from the rotating frame to the hub. The procedures also include the jib installation. The ladders LADDERS will be installed first, followed by the guardrails for the rotating frame, and then the jib installation.
  • Page 84 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Install azimuth drive left side guardrail (item 6) to rotating frame using 14 bolts (item 100), 28 washers (item 101), and 14 nuts (item 102). Install azimuth drive rear guardrail (item 7) to rotating frame using 12 bolts (item 100), 24 washers (item 101), and 12 nuts (item 102).
  • Page 85 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-7. 16/18 Meter Optional Equipment Installation (Sheet 1 of 4), 512569C ____________________________________________________________________________________________ 42S183D 3-31 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 86 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-7. 16/18 Meter Optional Equipment Installation (Sheet 2 of 4), 512569C ____________________________________________________________________________________________ 3-32 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 87 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-7. 16/18 Meter Optional Equipment Installation (Sheet 3 of 4), 512569C ____________________________________________________________________________________________ 42S183D 3-33 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 88 UPPER MOUNT INSTALLATION PROCEDURES ____________________________________________________________________________________________ Figure 3-7. 16/18 Meter Optional Equipment Installation (Sheet 4 of 4), 512569C ____________________________________________________________________________________________ 3-34 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 89 SECTION 4 INSTALLATION OR REFLECTOR, SPARS, SUBREFLECTOR, FEED, AND WAVEGUIDE General Installation of Reflector 4-32 Installation of Spars and Subreflector 4-38 Installation of Feed 4-41 Installation of Waveguide 42S183D Series 8116/8118 16-/18-Meter Earth Station Antenna...
  • Page 91 SECTION 4 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED GENERAL This section contains procedures for installing the reflector, spars, subreflector, and feed of the 16-/18-Meter Earth Station Antenna. The installation of the mount is contained in Section 2 and the installation of the azimuth/elevation drives and hub is contained in Section 3.
  • Page 92 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Secure LNA enclosure ladder to hub using two bolts (item 13), four washers (item 15) and two nuts (item 16). Install LNA enclosure cover assembly (item 7) using seven screws (item 8), seven washers (item 10), seven washers (item 11), and seven nuts (item 12).
  • Page 93 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-1. Feed Mounting Hardware Installation, 512570C ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 94 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED The 18M trusses, nodes, and intercostals are assembled into a truss Installation of 18M assembly using the following procedure. Refer to the next Truss Assemblies procedure for installation of 16M truss assemblies. Two truss assemblies are assembled together first on the ground. Then the two truss assembly is lifted into position using the crane.
  • Page 95 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ 11. Attach two intercostals #2D (item 10) from center of item 2A toward bolt location of item 1A using hex head bolt (item 100), flat washer (item 101), and hex nut (item 102) at truss end, and two bolts (100), four washers (101), and two nuts (102) at node end.
  • Page 96 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED 23. Repeat steps 3 through 6 and 8 through 22 to attach the intercostal and node assemblies on the outside left portion of the truss assembly assembled in steps 1 through 22. The outside of portion many of these intercostal #s will be unsecured;...
  • Page 97 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ 29. Align truss assembly to feed/panel mount ring by adding or removing T-shims. 30. Torque all fasteners (except nuts on panel rods) to the following values: 3/4-inch Fasteners 260 ft-lbs (353 Nm) 5/8-inch Fasteners 150 ft-lbs (203 Nm) 1/2-inch Fasteners...
  • Page 98 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-2. Installation of 18M Trusses, Nodes, and Intercostals (Sheet 1 of 6), 513586 ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 99 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-2. Installation of 18M Trusses, Nodes, and Intercostals (Sheet 2 of 6), 513586 ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 100 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-2. Installation of 18M Trusses, Nodes, and Intercostals (Sheet 3 of 6), 513586 ____________________________________________________________________________________________ 4-10 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 101 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-2. Installation of 18M Trusses, Nodes, and Intercostals (Sheet 4 of 6), 513586 ____________________________________________________________________________________________ 42S183D 4-11 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 102 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-2. Installation of 18M Trusses, Nodes, and Intercostals (Sheet 5 of 6), 513586 ____________________________________________________________________________________________ 4-12 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 103 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-2. Installation of 18M Trusses, Nodes, and Intercostals (Sheet 6 of 6), 513586 ____________________________________________________________________________________________ 42S183D 4-13 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 104 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-3. Installing 18M Trusses ____________________________________________________________________________________________ 4-14 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 105 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ The 16M trusses, nodes, and intercostals are assembled into a truss Installation of 16M assembly using the following procedure. Refer to the previous Truss Assemblies procedure for installation of 18M truss assemblies. Two truss assemblies are assembled together first on the ground.
  • Page 106 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED 11. Attach two intercostals #2D (item 10) from center of item 2A toward bolt location of item 1A using hex head bolt (item 100), flat washer (item 101), and hex nut (item 102) at truss end, and two bolts (100), four washers (101), and two nuts (102) at node end.
  • Page 107 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ damage during installation. (This portion of the assembly will be used to secure the assemblies together once mounted on the hub.) NOTE Every sixth truss must use a spar truss (item 3) instead of the truss extension (item 2), see Figure 4-4.
  • Page 108 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-4. Installation of 16M Trusses, Nodes, and Intercostals (Sheet 1 of 5), 513585 ____________________________________________________________________________________________ 4-18 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 109 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-4. Installation of 16M Trusses, Nodes, and Intercostals (Sheet 2 of 5), 513585 ____________________________________________________________________________________________ 42S183D 4-19 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 110 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-4. Installation of 16M Trusses, Nodes, and Intercostals (Sheet 3 of 5), 513585 ____________________________________________________________________________________________ 4-20 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 111 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-4. Installation of 16M Trusses, Nodes, and Intercostals (Sheet 4 of 5), 513585 ____________________________________________________________________________________________ 42S183D 4-21 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 112 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-4. Installation of 16M Trusses, Nodes, and Intercostals (Sheet 5 of 5), 513585 ____________________________________________________________________________________________ 4-22 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 113 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ When all of the trusses are assembled, installed, and aligned, the antenna Installation of Panels structure is ready for the panel installation. There are four rows of panels for the 18-meter antenna (rows A, B, C, and D). There are three rows of panels for the 16-meter antenna (rows A, B, and C).
  • Page 114 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED 11. Align panel flush to adjacent panels by moving threaded rod up or down with nuts on truss. Align the outer corners using the theodolite as in step 3. 12. Place right-hand spar attachment C panel (item 6) on threaded rods at next counterclockwise position.
  • Page 115 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-5. Installing 18M Panels (Sheet 1 of 2), 477757B ____________________________________________________________________________________________ 42S183D 4-25 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 116 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-5. Installing 18M Panels (Sheet 2 of 2), 477757B ____________________________________________________________________________________________ 4-26 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 117 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-6. Installing 16M Panels (Sheet 1 of 2), 477758B ____________________________________________________________________________________________ 42S183D 4-27 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 118 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-6. Installing 16M Panels (Sheet 2 of 2), 477758B ____________________________________________________________________________________________ 4-28 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 119 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ The panels are aligned using a theodolite attached to the center of Final Alignment of the hub. Care must be exercised to ensure the panels are in Panels alignment after the fasteners are torqued. Perform the following procedure for final alignment of the panels using a theodolite and an alignment kit PN 479609.
  • Page 120 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-7. Theodolite Adapter Installation Assembly, 480594 ____________________________________________________________________________________________ 4-30 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 121 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ The spars and subreflector installation procedure includes assembly INSTALLATION OF of spars and subreflector and installation of spars and subreflector SPARS AND SUBREFLECTOR assembly. The spars and subreflector are assembled together on the ground, then hoisted into position on the reflector.
  • Page 122 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED CAUTION __________________________________________ When lifting and supporting subreflector, exercise care to prevent damage to subreflector formed surface. Any damage to this surface will affect the performance of the subreflector. __________________________________________ Lift subreflector and adjust straps as necessary to level assembly a few feet (a meter or so) above the ground.
  • Page 123 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-8. 18-Meter Antenna Subreflector Installation (Sheet 1 of 2), 476807C ____________________________________________________________________________________________ 42S183D 4-33 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 124 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-8. 18-Meter Antenna Subreflector Installation (Sheet 2 of 2), 476807C ____________________________________________________________________________________________ 4-34 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 125 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-9. 16-Meter Antenna Subreflector Installation (Sheet 1 of 2), 477753B ____________________________________________________________________________________________ 42S183D 4-35 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 126 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-9. 16-Meter Antenna Subreflector Installation (Sheet 2 of 2), 477753B ____________________________________________________________________________________________ 4-36 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 127 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ The following procedure describes the installation of the feed INSTALLATION OF mounting hardware, the Model 8118 4-Port Feed, and the MODEL 8118 FEED installation of the waveguide for this feed. If other feeds are installed, they may require slightly different installation...
  • Page 128 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-10. Model 8118 Feed Installation (Sheet 1 of 2), 513398 ____________________________________________________________________________________________ 4-38 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 129 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-10. Model 8118 Feed Installation (Sheet 2 of 2), 513398 ____________________________________________________________________________________________ 42S183D 4-39 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 130 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED The following procedure describes the installation of the INSTALLATION OF waveguide for the Model 8118 4-Port Feed. WAVEGUIDE Install long feed can waveguide (item 2 in Figure 4-11) and short feed can waveguide (item 3) to feed using crossguide coupler (item 1) on each flange.
  • Page 131 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ (3) Install waveguide frame spacer (item 16) in waveguide using 2 threaded waveguide hangers (item 12), 6 washers (item 111), and 6 nuts (item 110). Secure waveguides to lower mount waveguide support (item 10), as illustrated in Figure 4-11, Sheet 1, using waveguide hanger kit (item 113), 2 screws (item 112), 4 washers (item 111), and 2 nuts (item 110).
  • Page 132 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED Figure 4-11. Model 8116/8118 Waveguide Installation (Sheet 1 of 2), 513360 ____________________________________________________________________________________________ 4-42 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 133 INSTALLATION OF REFLECTOR, SPARS, SUBREFLECTOR, AND FEED ____________________________________________________________________________________________ Figure 4-11. Model 8116/8118 Waveguide Installation (Sheet 2 of 2), 513360 ____________________________________________________________________________________________ 42S183D 4-43 SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 135 SECTION 5 OPERATION General Satellite Pointing Procedure Feed Polarization Subreflector Adjustment Azimuth Sector Change Procedure 42S183D Series 8116/8118 16-/18-Meter Earth Station Antenna...
  • Page 137 ____________________________________________________________________________________________ SECTION 5 OPERATION GENERAL With this elevation-over-azimuth mount, pointing the antenna is accomplished by jogging the antenna in elevation and jogging the antenna in azimuth. The antenna can be jogged locally using the jog switches on the lower mount or remotely using the jog switches on Model 8864 Antenna Position Controller.
  • Page 138 OPERATION ____________________________________________________________________________________________ Rotate the feed clockwise until the meter has passed through the peak and has decreased to the level recorded in step 3. Make a mark on the hub in line with the mark of the feed mounting plate. Measure the distance between the marks on the hub.
  • Page 139 OPERATION ____________________________________________________________________________________________ The first nulls to each side of the main beam will become deeper and eventually bottom out at some level (see Figure 5-1). This level varies depending on the antenna, but should be equal to or greater than 10 dB below the level of the first sidelobe. The deepest null in the H-plane sometimes occurs at a different subreflector position than in the E-plane.
  • Page 140 OPERATION ____________________________________________________________________________________________ Figure 5-1. Typical Antenna Patterns for Various Subreflector Positions ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 141 OPERATION ____________________________________________________________________________________________ AZIMUTH SECTOR Under normal operation, the antenna will remain pointed at one CHANGE satellite, but it may be necessary at some time to point the antenna at a different one. If that will require a movement in azimuth PROCEDURE beyond the limits set for the current sector, it will be necessary to change sectors.
  • Page 142 OPERATION ____________________________________________________________________________________________ CAUTION __________________________________________ In the following step, do not remove or loosen any other bracket screws or the LSR will have to be completely realigned. __________________________________________ 12. Remove two screws securing azimuth LSR drive channel to azimuth bearing. Set drive channel aside being careful not to lose coupling clamp.
  • Page 143 OPERATION ____________________________________________________________________________________________ 20. Carefully install LSR drive channel in position at other side of access hatch by aligning coupling onto LSR shaft while installing previously removed screws between channel and azimuth bearing. Be sure coupling clamp is on coupling. 21. Rotate LSR shaft until antenna controller shows a reading that is 60° (±0.1°) off from recorded reading and tighten coupling clamp.
  • Page 144 OPERATION ____________________________________________________________________________________________ Figure 5-2. Azimuth LSR Installation (Sheet 1 of 2), 482569 ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 145 OPERATION ____________________________________________________________________________________________ Figure 5-2. Azimuth LSR Installation (Sheet 2 of 2), 482569 ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 147 SECTION 6 MAINTENANCE General Periodic Maintenance Corrosion Protection 42S183D Series 8116/8118 16-/18-Meter Earth Station Antenna...
  • Page 149 To maintain proper adjustment, the assemblies have been keyed in place to prevent rotation. Do not attempt to adjust these parameters. questions concerning this should be directed to ViaSat Inc. __________________________________________ PERIODIC The suggested service intervals apply to a typical antenna MAINTENANCE installation and may vary due to environmental conditions.
  • Page 150 MAINTENANCE ____________________________________________________________________________________________ Bi-Monthly Perform the following procedures at least once every two months. Maintenance In extreme environments (ice, snow, etc.), perform these procedures monthly. WARNING __________________________________________ Remove electrical power from antenna system prior performing these maintenance procedures. __________________________________________ CAUTION __________________________________________ The mezzanine, if provided, is designed for a live load (personnel and tools) of 200 lbs per square foot (976 kg per square meter) or a concentrated...
  • Page 151 MAINTENANCE ____________________________________________________________________________________________ Inspect azimuth and elevation actuators for sufficient lubrication. For either actuator, the following steps should be performed: Run the actuator out 12 inches from the normal operating position. Disconnect the boot from the actuator housing and slide the boot back.
  • Page 152 MAINTENANCE ____________________________________________________________________________________________ Figure 6-1. Grease Fitting Maintenance Locations ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...

  • Page 153: Yearly Maintenance

    MAINTENANCE ____________________________________________________________________________________________ Yearly Maintenance Perform the following procedures at least once every year. Inspect the foundation pad for structural cracks and repair as required. Inspect feed and feed radome. Check torque values on all fasteners as follows: 1 1/4-inch Fasteners 1100 ft-lbs (1491 Nm) 1-inch Fasteners 600 ft-lbs (813 Nm)

  • Page 155: Lightning Protection

    SECTION 7 OPTIONS General Feed Options Lightning Protection 42S183D Series 8116/8118 16-/18-Meter Earth Station Antenna...
  • Page 157 The assembly drawing is shown in Figure 7-1. NOTE The feed specifications are subject to change without notice due to product improvements. Consult with ViaSat’s sales department for current specifications. The optional Model 8118-LP Lightning Protection kit can be LIGHTNING purchased from ViaSat.
  • Page 158 OPTIONS ____________________________________________________________________________________________ Figure 7-1. 4-Port Circular C-Band Feed Assembly (Sheet 1 of 5), 477259A ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 159 OPTIONS ____________________________________________________________________________________________ Figure 7-1. 4-Port Circular C-Band Feed Assembly (Sheet 2 of 5), 477259A ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 160 OPTIONS ____________________________________________________________________________________________ Figure 7-1. 4-Port Circular C-Band Feed Assembly (Sheet 3 of 5), 477259A ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 161 OPTIONS ____________________________________________________________________________________________ Figure 7-1. 4-Port Circular C-Band Feed Assembly (Sheet 4 of 5), 477259A ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 162 OPTIONS ____________________________________________________________________________________________ Figure 7-1. 4-Port Circular C-Band Feed Assembly (Sheet 5 of 5), 477259A ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 163 OPTIONS ____________________________________________________________________________________________ Figure 7-2. Lightning Protection Kit Installation (Sheet 1 of 2), 478096 ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 164 OPTIONS ____________________________________________________________________________________________ Figure 7-2. Lightning Protection Kit Installation (Sheet 2 of 2), 478096 ____________________________________________________________________________________________ 42S183D SERIES 8116/8118 16-/18-METER EARTH STATION ANTENNA...
  • Page 165 APPENDIX A INSTALLATION CHECKLIST WITH MANUAL PAGE REFERENCES 42S183D Series 8116/8118 16-/18-Meter Earth Station Antenna...
  • Page 167 INSTALLATION CHECKLIST WITH MANUAL PAGE REFERENCES LOWER MOUNT NOTE As fasteners are installed, tighten finger tight only, until specifically directed to torque a fastener. CHECK PAGE _____ Set bottom tapped onto a sturdy platform which will allow access to four corner bolt holes. 2-12 CAUTION _____________________________________________________________________________...
  • Page 168 LOWER MOUNT - continued CHECK PAGE _____ Remove ships ladder and drill four 3/4- by 4-inch deep holes in concrete. 2-19 _____ Attach ships ladder to stringer support beam and secure to concrete using expansion bolts. 2-19 _____ Install mezzanine guardrail. 2-19 _____ Install mezzanine grating on mezzanine support beams.
  • Page 169 UPPER MOUNT NOTE The hub assembly process requires a large (14 feet diameter) area which is flat, clean, and capable of handling at least 18,000 lbs (8,165 kg). CHECK PAGE _____ Determine center of azimuth sector. _____ Remove necessary bolts. Install pivot frame brace and drive pivot frame. _____ Install rotating frame.
  • Page 170 REFLECTOR, SPARS, SUBREFLECTOR, AND FEED INSTALLATION CHECK PAGE _____ Install feed/panel mount brackets, LNA enclosure, and feed/panel mount. _____ Clock ring to proper orientation. _____ Center and level ring. _____ Align 24 pairs of panel mounting holes with truss mounting holes. _____ Install LNA enclosure inner ladder and LNA enclosure ladder.
  • Page 171 APPENDIX B MECHNICAL ALIGNMENT SPECIFICATION AND REPORT FOR 16-/18-METER LIMITED MOTION ANTENNA (479820A) 42S183D Series 8116/8118 16-/18-Meter Earth Station Antenna...
  • Page 173 ®...
  • Page 174 Each item should be performed and verified in the order listed as the earth station is erected, so that the completed antenna will meet specifications. Copies of this completed report are to be delivered to the customer and to the ViaSat program manager for the job. AZIMUTH AXIS ALIGNMENT Starret no.
  • Page 175 MECHANICAL ALIGNMENT SPECIFICATION AND REPORT FOR 16 AND 18 METER LIMITED MOTION ANTENNA Antenna size _________ meters. ViaSat program manager __________________________________ Customer _________________________________ Installation location __________________________________ PANEL/FEED MOUNTING RING AND THEODOLITE ALIGNMENT The azimuth bearing and elevation axis have been aligned according to steps 2 and 3 above, and the hub positioned to 90 degrees elevation.
  • Page 176 MECHANICAL ALIGNMENT SPECIFICATION AND REPORT FOR 16 AND 18 METER LIMITED MOTION ANTENNA Antenna size _________ meters. ViaSat program manager __________________________________ Customer _________________________________ Installation location __________________________________ PANEL CONTOUR ALIGNMENT Panel contour alignment has been performed according to procedure 479821, at the customer's average elevation look angle (or 35 to 40 degrees if look angle is not specified).
  • Page 177 MECHANICAL ALIGNMENT SPECIFICATION AND REPORT FOR 16 AND 18 METER LIMITED MOTION ANTENNA Antenna size _________ meters. ViaSat program manager __________________________________ Customer _________________________________ Installation location __________________________________ FEED HORN ALIGNMENT The perpendicular distance between the top of the feed horn radome bezel and the subreflector vertex should be: 59.82 inch (±...
  • Page 179 APPENDIX C CONTOUR ALIGNMENT SPECIFICATION AND RECORD FOR 16-/18-METER ANTENNA (479821B) 42S183D Series 8116/8118 16-/18-Meter Earth Station Antenna...
  • Page 181 REVISED AND REDRAWN PER ECR 11637 10/12/94 D.G. FULLER REVISED PER CO-013197 4/23/2004 K. EDENFIELD CONTRACT NO. ALL DIMENSIONS ARE IN INCHES ViaSat Inc. UNLESS OTHERWISE SPECIFIED 4356 Communications Drive TOLERANCES Norcross, GA 30093 H.L. HOWARD 6/16/93 3 PLACE DECIMAL ±.005 2 PLACE DECIMAL ±.02...
  • Page 182 This specification provides panel installation and final alignment data. When completed it will also serve as a record of the reflector alignment. Copies of this completed record are to be delivered to the customer and to the ViaSat program manager for the job.
  • Page 183 CONTOUR ALIGNMENT SPECIFICATION AND RECORD FOR 16 AND 18 METER ANTENNA Antenna size _________ meters. ViaSat program manager ____________________________ Customer _________________________________ Installation location _________________________________ Figure 1. Panel Contour Alignment Target Map (looking into reflector) April 23, 2004 ViaSat 479821B, page 3...
  • Page 184 CONTOUR ALIGNMENT SPECIFICATION AND RECORD FOR 16 AND 18 METER ANTENNA Antenna size _________ meters. ViaSat program manager ____________________________ Customer _________________________________ Installation location _________________________________ REFLECTOR PANEL FINAL ALIGNMENT REFERENCE Panel targets contain three 0.04 inch high white reference dots for theodolite sighting. The center of the middle dot is the nominal setting reference;...
  • Page 185 CONTOUR ALIGNMENT SPECIFICATION AND RECORD FOR 16 AND 18 METER ANTENNA Antenna size _________ meters. ViaSat program manager ____________________________ Customer _________________________________ Installation location _________________________________ 16 and 18 Meter Target Final Readings 18 Meter Only Target Row 1 Row 2 Row 3...
  • Page 186 CONTOUR ALIGNMENT SPECIFICATION AND RECORD FOR 16 AND 18 METER ANTENNA Antenna size _________ meters. ViaSat program manager ____________________________ Customer _________________________________ Installation location _________________________________ 16 and 18 Meter Target Final Readings 18 Meter Only Target Row 1 Row 2 Row 3...
  • Page 187 CONTOUR ALIGNMENT SPECIFICATION AND RECORD FOR 16 AND 18 METER ANTENNA Antenna size _________ meters. ViaSat program manager ____________________________ Customer _________________________________ Installation location _________________________________ 16 and 18 Meter Target Final Readings 18 Meter Only Target Row 1 Row 2 Row 3...

This manual is also suitable for:

8118 series

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