Andrew 9.3-Meter ESA Installating And Operation Manual
  1. Manuals
  2. Brands
  3. Andrew Manuals
  4. Antenna
  5. 9.3-Meter ESA
  6. Installating and operation manual

Andrew 9.3-Meter ESA Installating And Operation Manual

9.3-meter earth station antenna
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Installation, Operation and Maintenance
Type ES93( )
9.3-Meter ESA
Andrew Corporation
10500 West 153rd Street
Orland Park, IL U.S.A. 60462
9.3-Meter Earth Station Antenna
Telephone: 708-349-3300
FAX (U.S.A.): 1-800-349-5444
Internet: http://www.andrew.com
Customer Service, 24 hours: U.S.A. • Canada • Mexico: 1-800-255-1479
U.K.: 0800 250055 • Republic of Ireland: 1 800 535358
Other Europe: +44 1592 782612
Bulletin OM93
Revision D
Printed in U.S.A. 01/05
Copyright © 2005 by Andrew Corporation

Advertisement

Table of Contents
loading

Related Manuals for Andrew 9.3-Meter ESA

Summary of Contents for Andrew 9.3-Meter ESA

  • Page 1 Orland Park, IL U.S.A. 60462 Customer Service, 24 hours: U.S.A. • Canada • Mexico: 1-800-255-1479 U.K.: 0800 250055 • Republic of Ireland: 1 800 535358 Other Europe: +44 1592 782612 Bulletin OM93 Revision D Printed in U.S.A. 01/05 Copyright © 2005 by Andrew Corporation...

  • Page 2: Table Of Contents

    Introduction Introduction............... . 3 How to Use This Manual Overview .

  • Page 3: Introduction

    9.3-Meter Earth Station Antenna Introduction Like all Andrew earth station antennas, the 9.3-Meter Earth Station Antenna provides high gain and exceptional pattern characteristics. The electrical performance and excep- tional versatility provides the ability to configure the antenna with your choice of linearly- or circularly-polarized 2-port or 4-port combining network.

  • Page 4: Proprietary Data

    The technical data contained herein is proprietary to Andrew Corporation. It is intended for use in operation and maintenance of Andrew supplied equipment. This data shall not be disclosed or duplicated in whole or in part without express written consent of Andrew Corporation.

  • Page 5: How To Use This Manual

    Describes the controls, functions, and general operating procedures required for proper operation of the 9.3-Meter Andrew Earth Station Antenna. Preventive Describes preventive maintenance procedures that are required to Maintenance maintain proper functional operation of your new Andrew Earth Station Antenna. How to Use This Manual...

  • Page 6: Getting Started

    125 mph winds in any operational position in moderate coastal/industrial areas. Severe conditions require additional protection. Should it be expected that winds will exceed 125 mph, it is recommended that Andrew antennas be steered to specific azimuth and elevation orientations to minimize wind forces upon the structure and thereby increase the probability of survival.

  • Page 7: Recommended Tools

    Tools Meter Earth Station Antenna. All tools necessary for the installation process should be provided by the installation crew. Andrew recommends the following tools to be used for a proper installation of the 9.3-Meter Earth Station Antenna. Open End or Combination Wrenches...

  • Page 8: Parts Verification

    After opening your shipment, an inventory of the parts should occur immediately. Check Equipment each item received in your shipment against the packing slip included with the shipment. If any items are missing, please notify Andrew Corporation immediately by contacting Received the Customer Service Center.

  • Page 9: Returning Equipment

    Returning Andrew Corporation tries to ensure that all items arrive safe and in working order. Equipment Occasionally, despite these efforts, equipment is received which is not in working condi- tion. When this occurs, and it is necessary to return the equipment to Andrew...

  • Page 10: Installation Procedures

    Overview This section provides installation procedures for the 9.3-Meter Andrew Earth Station Antenna. The installation procedures include instructions on the following antenna com- ponents: • Mount • Reflector • Enclosure Foundation Before beginning the installation process on the ground mount assembly, ensure that Preparation the foundation has been prepared.

  • Page 11: A-325 Tensioning

    A-325 Tensioning During the installation process, there are several references to the A-325 hardware ten- sioning procedure. The A-325 hardware must be properly tensioned to avoid slippage between bolted surfaces under high loads. Slippage can cause the corresponding assembly to move, causing antenna misalignment. When designated, the A-325 hard- ware should be tightened according to the following tensioning procedure.

  • Page 12: Tripod Ground Mount Assembly

    Tripod Ground The three-point mount is an elevation-over-azimuth mount optimized for geostationary Mount Assembly satellite applications. The mount enables continuous elevation adjustment from 0 to 90°. Azimuth adjustment is ±90° and divided into three 120° ranges with 30° overlap. Follow the subsequent procedures for proper installation of tripod ground mount assembly.
  • Page 13 Step 4 Raise 201112 azimuth beam assembly and attach to front foundation pad as shown in Figure 5. • Use 1 in. (25 mm) flatwashers and hex nuts Note: Hex nuts and flatwashers supplied with 201680 anchor bolt kit Figure 5 Installation Procedures...

  • Page 14: Support Legs Assembly

    Support Legs Assembly Attach 200068 joint assembly to 200114A beam assembly as shown in Figure 6. Attach Step 1 200083 angles to 200114A beam assembly as shown in Figure 6. • Use 7/8 x 2-1/4 in (57 mm) bolts and nuts for each connection Step 2 Attach 200088 joint assembly to 200114A beam assembly as shown in Figure 7.
  • Page 15 Step 3 Raise 200114A beam assembly to upright position and attach 200109 supports to 200068 joint assembly as shown in Figure 8. • Use 7/8 x 2-1/4 in (57 mm) bolts and nuts • Insert bolts from 200068 joint assembly to supports •...
  • Page 16 Step 5 Attach 200108 supports to 200063/200064 rear pad assemblies and 200088 joint assembly as shown in Figure 10. • Use 7/8 x 2-1/4 in (57 mm) bolts and nuts • Insert bolt from inside of joint assembly to outside of support •...
  • Page 17 Step 7 Refer to Figure 12. Raise and attach assembled beam/support assembly to 200112 beam assembly using 7/8 by 2-1/4 in (57 mm) hardware and corresponding rear founda- tion pads as shown using 1 in flat washers and hex nuts. Ensure all A-325 mounting hardware is in place.

  • Page 18: Panning Frame Assembly

    Panning Frame Assembly Refer to Figures 13A and 13B. Determine azimuth range requirements from APPENDIX ‘A’ (page 65) and loosely attach 200035 outrigger assembly (if required) to appropriate Step 1 side of 200031A panning assembly. • Use 7/8 x 2-1/4 in (57 mm) hardware and apply supplied RTV to flange surfaces as indicated.
  • Page 19 Step 4 Refer to Figure 14. Apply supplied RTV to flange surfaces and loosely attach 200699/200021 elevation pivot assemblies to rear of enclosure drum assembly • Use 3/4 by 3.0 inch (75 mm) hardware Step 5 Slightly raising assembly and loosely attach 200016/200015 joint assemblies to bottom portions of panning assembly.
  • Page 20 Step 6 Refer to Figure 15. Raise assembled panning/pivot assembly and loosely attach 301786 azimuth pivot assembly to upper portion of 200068 joint assembly as shown. • Use 7/8 by 2-1/2 inch (64 mm) hardware Note: Position mounting hardware as shown to ensure proper panning frame clearance. Install 7/8 inch flatwashers between 301786 pivot assembly and 200068 joint assembly.
  • Page 21 Step 7 Refer to Figure 16. Attach 200107 support pairs back-to-back with 45967 spacer at mid- point. Loosely attach support pairs to corresponding tabs on 200015/200016 joint assem- blies and 201022 pivot assembly as shown. • Use 7/8 by 2-1/4 in (57 mm) hardware Note: Angles are attached edge out with flat of angle facing inward.

  • Page 22: Azimuth Jack Screw Assembly

    Azimuth Jack Screw Assembly Step 1 Refer to Figure 17. Apply RTV to flange surface and attach 200013-4/301841 azimuth jackscrew to 201021 azimuth pivot assembly as shown. • Use 1-1/4 by 3-1/2 in (89 mm) bolts, lock washers and nuts Note: Mounting hardware is included with corresponding jack assembly hardware kit.
  • Page 23 Step 3 Refer to Figure 18. Raise the azimuth pivot/jack screw assembly, and attach to 200088A joint assembly. • Use 1 by 2-1/2 inch (63 mm) hardware. Note: Mounting position of azimuth/pivot jack screw assembly is dependent upon azimuth range requirements and corresponds with mounting position of 200035 outrigger assem- bly (if utilized).
  • Page 24 Figure 19A Figure 19B Step 6 Replace previously removed jack screw band clamp assembly. Note: Attach .jack extension to pivot assembly using 7/8 by 2-3/4 in (70 mm) bolts and nuts (P/O jack assembly hardware kit), for 200013-4 azimuth jack applications. For motorized mounts only, remove oil plug on motor assembly gearbox and replace with supplied vent plug packaged with the motor assembly.

  • Page 25: Elevation Jack Screw Assembly

    Elevation Jackscrew Assembly Refer to Figure 20. Apply supplied RTV to indicated flange surfaces and attach 200013- Step 1 3/200048 elevation jack screw to 200128 elevation extension assembly as shown. • Use 1-1/4 by 3-1/2 in (89 mm) bolts, washers and nuts Note: Mounting hardware is included with corresponding jack assembly hardware kit.
  • Page 26 Step 3 Refer to Figure 21. Apply supplied RTV to flange surface and attach remaining end of 200128 elevation extension assembly to corresponding 201022 pivot assembly as shown. • Use 7/8 by 2-1/4 in (57 mm) hardware. For motorized mounts only, remove oil plug on motor assembly gearbox and replace with supplied vent plug packaged with the motor assembly only after elevation jack is in final operating position.

  • Page 27: Grounding Cable Attachment

    Grounding Cable Note: Thoroughly clean exposed portions of grounding cables, unplated portion of uni- Attachment versal terminals and corresponding mounting surfaces using a wire brush. Liberally apply supplied 203233-2 conductive grease to all connection surfaces prior to and after instal- lation.
  • Page 28 Step 2 Refer to Figure 23. Remove existing 7/8 by 2-1/4 in (57 mm) hardware from both eleva- tion pivot/joint assemblies at indicated positions and install grounding cables as shown. • Use supplied 7/8 by 2-3/4 in (70 mm) bolts and nuts Note: Supplied 3/4 in hardware is installed after reflector to ground mount installation.

  • Page 29: Reflector/Backstructure Assembly

    Reflector/ Type A-325 hardware is utilized during the reflector attachment to the ground mount. Backstructure Use of A-325 hardware eliminates slippage between mating surfaces under high loading Assembly conditions as well as the need for future retightening. Refer to the A-325 tensioning pro- cedure in preceding installation text.
  • Page 30 Step 2 Refer to Figure 25. Align tabs on feed rotating tube assembly 77639 or non-rotating tube 78334 with corresponding angle brackets on drum assembly. Apply supplied RTV as shown and attach rotating tube to center of drum assembly. • Use 3/8 x 1-1/2 in (38 mm) bolts, lock washers and nuts If 78334 non-rotating tube is used unbolt flange assembly, apply RTV to both flange faces and assemble to drum.

  • Page 31: Jack Tripod Assembly

    Jack Tripod Assembly Step 1 Refer to Figure 26. Assemble jack tripod by connecting tripod braces to tripod leg. • Use 3/4 x 5-1/2 in (140 mm) bolts, lock washers and nuts Step 2 Attach jack tripod assembly braces to corresponding drum pivot/mount assemblies as shown.

  • Page 32: Reflector Assembly

    Reflector Assembly Step 1 Refer to Figure 27. Assemble 20 right- and left-hand back-to-back strut assembly pairs Type 78082 and 78083 as shown. • Use 1/2 x 1-1/2 in (38 mm) bolts, spacers, lock washers and nuts. Tighten strut spacer bolt.
  • Page 33 Step 3 Refer to Figure 29. Carefully remove reflector panel segments from packing crates. Begin with center flash panel (if applicable) and attach to corresponding angle tab on upper drum ring as shown. • Using 5/8 x 1-3/4 in (44 mm) bolt, spacer, lock washer and nut. Tighten the panel to drum angle hardware until lock washer is compressed, then back off one half turn.
  • Page 34 Step 4 Refer to Figure 30. Install reflector segment formed tee section between corresponding back strut members and attach. • Use 1/2 x 1-7/16 in (37 mm) eccentric bolt, lock washer and nut Note: Ensure eccentric bolt is fully seated and bolt head marking is positioned at right angle to panel segment.

  • Page 35: Subreflector Assembly

    Step 6 Refer to Figure 32. Loosely attach 300177 Subreflector Strut Supports to reflector as shown ensuring brackets are installed on seam hole positions 15 and 16. Position brackets clockwise as shown using brackets and hardware supplied as part of 300175 Subreflector Strut Kit.
  • Page 36 Step 2 Refer to Figure 34. Attach 300178 Subreflector Strut Brackets to 300174 Strut Assemblies. • Use 1/2 x 2-1/2 in (64 mm) galvanized bolts, 300022 backup plates, lock washers and nuts. Note: All strut brackets should face counterclockwise as shown. Step 3 Assemble 300174 strut assemblies as shown.
  • Page 37 Step 7 Refer to Figure 35. Raise preassembled subreflector subassembly and strut assembly and attach to subreflector supports as shown. • Use 1/2 x 2-1/2 in (64 mm) galvanized bolts, flat washers, lock washers and nuts. Step 8 Securely tighten mounting hardware. Mount tabs on strut assemblies to right side of subreflector brackets to keep struts aligned with corresponding reflector segment sec- tions.

  • Page 38: Theodolite Assembly

    Theodolite Refer to Figure 36. The Andrew Theodolite Kit (223711) contains 1 theodolite mounting Assembly assembly and 1 alignment stick assembly. A Wild T2 or Topcon DT-05A theodolite is used but not included as part of the Andrew Theodolite Kit.
  • Page 39 Step 2 Refer to Figure 37. Install theodolite support assembly to feed support tube. Secure theodolite support assembly by attaching lower flange adapter to feed support tube. • Use 3/8 x 1-1/2 in (38 mm) bolts, lock washers and nuts Figure 37 Installation Procedures...

  • Page 40: Theodolite Leveling

    Theodolite Leveling Step 1 Refer to Figure 38. Assemble 3 brass rod holders as shown. The brass rod holders used for calibration of the theodolite to the reflector and subsequent alignment of the reflector, must be installed in the third seam holes at the panel seams shown. Step 2 Before taking any readings, allow the theodolite to become acclimated to ambient condi- tions for at least 15 to 20 minutes prior to operation.
  • Page 41 Step 4 Refer to Figures 38 and 39. With the height of the theodolite and its support kit set as indicated in Figure 24, the theodolite should sight near the scribe line of the alignment stick when theodolite elevation is set to 90° 00’ 00”. If not, set the theodolite elevation angle to 90°...

  • Page 42: Theodolite Centering

    Theodolite Centering Step 1 Refer to Figures 38 and 39. Centering of the theodolite is performed using the X-Y translation stage. This device has 2 sets of micrometer adjustments and 2 sets of long locking adjustment screws which are opposed at 90°. Step 2 During initial adjustment, ensure that the long screws are unscrewed counterclockwise to provide free movement.

  • Page 43: Reflector Panel Adjustment

    Reflector Panel Adjustment Step 1 Refer to Figure 40. Each panel segment has a scribe line, which defines the circumfer- ence of all corresponding screw locations at the number 17 position. Step 2 Adjust panel segment using cambolts on back struts to move the panel to the highest possible position.
  • Page 44 Table 3 Installation Procedures...

  • Page 45: Subreflector Adjustment

    Subreflector Adjustment Step 1 Refer to Figure 42. Use tape measure to set rim of subreflector to required distance of 119.110 in (302.6 cm) measured from the top of first seam hardware to the aperture plane of the subreflector using three subreflector adjustment studs. Step 2 Attach right angle viewing piece to theodolite.

  • Page 46: Subreflector Offset Tilt Adjustment

    Subreflector Offset Tilt Adjustment Step 1 Refer to Table 4 and Figure 43. Adjust top subreflector jam nuts (two) the distance indi- cated according to the offset pointing angle in Table 4. Make the desired adjustment using the floating ring and subreflector jam nuts. Note: Before making any adjustment, mark the starting position of the jam nuts in rela- tion to the floating ring with a pencil, then mark the floating ring to indicate the proper distance of the turn.

  • Page 47: Reflector/Backstructure To Ground Mount Assembly Installation

    Reflector/Back- structure to Ground Mount Assembly Installation Step 1 Refer to Figure 45. Attach 5/8 in (16 mm) shackles with corresponding 20 ft (6 m) chok- ers to four drum assembly angle brackets as shown. Attach 15 ft (4.5 m) tag line to for- ward left of jack tripod assembly.
  • Page 48 Step 3 Refer to Figure 46. Extend elevation jack extension assembly to 7 ft (2 m) dimension as shown. Raise assembly and secure to forward ground mount beam assembly, using 6 ft (2 m) choker and winch assembly. Warning: Do not attempt to raise reflector/backstructure if winds exceed 25 mph. Raise reflector/backstructure assembly and align with corresponding elevation jack/panning frame assemblies using tag lines for guidance.

  • Page 49: Operation

    Acquiring A There are several procedures that may be used to properly acquire the satellite. Andrew Satellite recommends that a spectrum analyzer be used. The following procedures provide explanation as to how to use the spectrum analyzer.
  • Page 50 The following steps provide the procedure for acquiring a satellite. Step 1 Begin by obtaining the correct Az/El pointing data for the satellite of interest. Step 2 Using an inclinometer, position the antenna to the specified elevation angle. Step 3 Manually move the antenna in the azimuth (scanning back-and-forth around the direc- tion of the specified azimuth angle) to achieve the maximum (greatest amplitude) transponder signals.
  • Page 51 Step 7 Move the antenna in azimuth to obtain a null, then move ± in elevation to obtain a large peak signal. If not, move the antenna in the opposite azimuth direction through the peak and again move ± in elevation to obtain a large peak signal. If a larger peak is not found, you were on the main lobe.
  • Page 52 Step 10 With all 24 transponder signals of approximately equal amplitude appearing on the spectrum analyzer screen determine the specific antenna system and satellite parame- ters. Rotate the feed assembly as required until the appropriate (odd or even) transpon- der signals are maximized. Figure 4-4: Maximizing Odd Transponders Figure 4-5: Optimum Polarization Setting Operation...

  • Page 53: Subreflector Adjustment

    Subreflector After the satellite has been acquired and testing has taken place with the spectrum analyzer, Adjustment the subreflector may need to be adjusted to maximize optimum performance of your anten- na. The following procedures should be followed if a subreflector adjustment is required to maximize optimum performance.

  • Page 54: Overview

    Preventive Maintenance Overview This section contains periodic preventive maintenance instructions for the 9.3-Meter Earth Station Antenna. Included in this section are inspection and preventive mainte- nance procedures including cleaning and lubrication, painting, and an operational volt- age/current checkout procedure deemed within the capabilities of the average station technician.

  • Page 55: Mechanical Parts

    Mechanical Parts Clean mechanical parts by first removing dust, dirt, and other loose contaminants with a scraper, stiff brush (bristle or wire in the case of rust or other corrosion), or cloth or com- pressed air at 25 to 40 psi. Any accumulated imbedded dirt, corrosion, grease, or oil deposits that require further cleaning may be removed with a bristle or wire brush and a cleaning solvent such as trichlorethylene or equal.

  • Page 56: Antenna

    • Check transformer for an excessive wax deposit on the surface, discoloration, or a pungent odor indicative of burning vanish denoting overheating or a total breakdown. • Check all terminal boards for broken or missing terminals and stripped threads. Check tightness of lead attaching hardware.

  • Page 57: Preventive Maintenance

    • Operate the azimuth and elevation drives as well as the feed rotation in both the plus and minus direction from the local control/motor drive controller at least once every three months during antenna down time. Check the mechanical limit switches provided at the end points stop the antenna and feed movement, and limit travel to prevent struc- tural interference and damage.

  • Page 58: Drive System Voltage And Current Checks

    Voltage and tion facility, an installation acceptance check off sheet was prepared and duly signed off if installed by Andrew crew. Part of this check off included voltage readings retaken to Current Checks determine if proper voltage was available. Current readings were also taken as a refer- ence for future comparison to serve as a troubleshooting aid in determining possible equipment degradation and shortened life.
  • Page 59 Step 4 Repeat preceding step (3) with the FEED CCW/OFF/CW switch in the alternate operat- ing position. Step 5 Turn the AZIMUTH EAST/WEST switch to either position and while the antenna is rotat- ing, carefully use a clamp on ammeter in accordance with the ammeter manufacturer’s instructions to take current readings off each of the three conductors (phases) connect- ed to the load side of the azimuth drive motor circuit breaker.

  • Page 60: Preservation Of Component Parts

    Preservation of When preserving the component parts, refer to the following paragraphs in this section. Component Parts Aluminum Parts Remove all loose paint and corrosion by scraping, wire brushing, or using steel wool. If using steel wool near the feed window, make sure that none remains on the feed horn window.

  • Page 61: Jackscrews/Motors

    and remove any old lubricant to prevent an excessive build-up. Remove indicated access plugs from square tube weldment and apply lubricant to panning frame tube assembly and corresponding thrust pads. Securely replace access plugs in square tube weldment. Be certain to remove any protective caps and clean off each lubrication fitting prior to injecting fresh grease.

  • Page 62: Gear Motor/Housing Fill Drain Requirements

    Lube Components Point to be Lubricated Elevation Jackscrew Housing Elevation Jackscrew Gear Housing Fill and Drain Elevation Drive Intermediate Gearbox Fill and Drain Elevation Jackscrew Pivot Pin, upper Azimuth Jackscrew Pivot Pin, front Azimuth Jackscrew Housing Azimuth Jackscrew Gear Housing Fill and Drain Azimuth Drive Intermediate Gearbox Fill and Drain...
  • Page 63 Pressure Fitting Gearbox Gearbox Fill Fill Gearbox Gearbox Gearbox Drain Level Vent Pressure Fitting Worm Gear Polarization Pillow Drive Gear Blocks (2) Pressure Fitting High-Speed Antenna Lubrication Points Heater Control Gearbox Gearbox Local Fill Motor Control Note Medium-speed motors shown for illustrative purposes only.
  • Page 64 Pressure Fitting Pressure Fitting Gearbox Gearbox Drain Level Medium-Speed Antenna Lubrication Points Pressure Fitting Worm Gear Polarization Pillow Drive Gear Blocks (2) Heater Control Local Motor Control Pressure Fitting Gearbox Gearbox Drain Level Preventive Maintenance...
  • Page 65 This section contains the formulas for determining the point- ing capabilities of the modular mount earth station antenna. Formulas for calculating true azimuth (AZ), true elevation (EL), relative angle between true azimuth and mount point- ing angle (dAZ) and strut lengths of the earth station are given below: Given the earth station latitude, longitude, azimuth set- ting of mount (AZm) and satellite longitude (over the equa-...
  • Page 66 APPENDIX ‘B’ Sector Change Process Customer Service, 24 hours: U.S.A. • Canada • Mexico: 1-800-255-1479 U.K.: 0800 250055 • Republic of Ireland: 1 800 535358 Other Europe: +44 1592 782612 Printed in U.S.A. JAN/05 Copyright © 2005 by Andrew Corporation...

This manual is also suitable for:

Es93Es93hs

Table of Contents