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Overview

Acquiring A

Satellite

54

Operation

After you have completed the assembly of your antenna, you are now ready to become
operational. In order to operate the earth station antenna, you will need to direct it to the
desired satellite adjusting both the elevation and azimuth angles appropriately. The fol-
lowing procedures provide details on how to correctly position your antenna on the
desired satellite.

There are several procedures that may be used to properly acquire the satellite. Andrew
recommends that a spectrum analyzer be used. The following procedures provide
explanation as to how to use the spectrum analyzer.

While viewing the spectrum analyzer screen, a signal as shown in Figure 4-1 will proba-
bly be observed. Additionally, some transponder signals may be observed above the
noise signal as shown.

Operation

Figure 4-1: Minimum transponder Signal on Spectrum Analyzer

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Содержание 7.3-Meter ESA

Страница 1: ...ttp 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 15 August 2005 Copyright 2005 by Andrew Cor...

Страница 2: ...ssembly 12 Support Legs Assembly 13 Panning Frame Assembly 16 Elevation Jackscrew Assembly 23 Azimuth Jackscrew Assembly 25 Mount Assembly 25 Reflector Subreflector Feed Assembly 30 Feed Waveguide Ass...

Страница 3: ...y location worldwide The motorizable tripod mount features self aligning bearings for the elevation pivots resulting in zero backlash This mount can be operated manually but has the ability to be upgr...

Страница 4: ...ts of improper or unsafe installation and maintenance practices All designs specifications and availabilities of products and services presented in this manual are subject to change without notice Cop...

Страница 5: ...anual is divided into five distinct sections each dealing with a specific technical topic relating to either system or component subsystem information The sections con tained in this manual are descri...

Страница 6: ...tallation of antennas may require persons to work at elevated work stations Whenever persons are working at eight or more feet above the ground and not on a guarded platform they should wear safety be...

Страница 7: ...per installation of the 7 3 Meter Earth Station Antenna Tool Size Quantity Open End or Combination Wrenches 5 16 Inch 2 7 16 Inch 2 9 16 Inch 2 7 8 Inch 2 3 4 Inch 2 1 2 Inch 2 1 1 4 Inch 1 Crane 1 To...

Страница 8: ...rier s agent Failure to adequately describe such external evidence of loss or damage may result in the carrier refusing to honor a damage claim The form required to file such a claim will be supplied...

Страница 9: ...ce the sales order and purchase order as well as the date the equipment was received Pack the equipment in its original container with protective packing material If the origi nal container and packin...

Страница 10: ...Foundation specifications are provided by Andrew and may be used as a reference by civil engineering personnel when preparing the foundation for local soil conditions These specifications are availabl...

Страница 11: ...omplete tighten the bolts until the surfaces are joined and the nuts are snug for example full effort of a person using an ordinary spud wrench Do not proceed with Steps 5 and 6 unless the connection...

Страница 12: ...d ground mount assembly All ground mount hardware is type A 325 Lubricate all A325 bolt threads with supplied stick wax Note Do not tighten hardware until ground mount installation is complete unless...

Страница 13: ...wn in Figure 5 Attach 200083 angles to 201313A beam assembly as shown in Figure 5 Use 7 8 x 2 1 4 in 57 mm bolts and nuts for each connection Installation Procedures Figure 5 Attach 200088A joint asse...

Страница 14: ...ed back to back with the flat of angle facing upwards Tighten supports until assembly can support itself Installation Procedures Figure 7 Attach 201301 201302 rear pad assembly to 201315 supports as s...

Страница 15: ...outside of support Supports should be installed back to back with the edges forward and the flats of angles facing rear Installation Procedures Figure 9 Attach 201317 supports between angle pairs as s...

Страница 16: ...shown in Figures 11 and 12 Note Ensure pivot assembly resolver limit switch mounting holes are downward Use 7 8 x 2 1 4 in 57 mm hardware and apply supplied RTV to flange surfaces as indicated Bolts...

Страница 17: ...7 Attach 221608 joint assemblies to panning frame as shown in Figures 13 and 14 Use 7 8 x 2 1 4 in 57 mm hardware Insert bolts from panning frame to joint assembly Installation Procedures Figure 13 Fi...

Страница 18: ...57 mm hardware for each connection Installation Procedures Figure 15 Attach 221345 azimuth pivot assembly to 201316 support pairs Attach 201596 mount ing plates to 221345 azimuth pivot assembly tab a...

Страница 19: ...Installation Procedures Figure 17 Attach 201488 outrigger plate to opposite end of 201487 panning assembly Attach 201481 201482 supports to outrigger plate as shown in Figure 18 Use 7 8 x 2 1 4 in 57...

Страница 20: ...rigger plate Installation Procedures Figure 19 Attach 221721 elevation axis assembly to 201487 panning frame assembly and 221608 joint assemblies as shown in Figures 20 and 21 Use 7 8 x 2 1 4 in 57 mm...

Страница 21: ...eft tripod joint bracket to 221721 elevation axis assembly as shown in Figure 22 Use 7 8 x 2 1 4 in 57 mm bolt flatwasher under bolt and under nut and nut Insert bolts from elevation axis assembly to...

Страница 22: ...ut Insert bolts from channel leg to joint bracket Figure 24 Figure 23 Attach 301772 tripod tube weldment to 300026 tripod channel legs as shown in Figure 24 Use 7 8 x 2 1 4 in 57 mm bolt flatwasher an...

Страница 23: ...ly to 201596 mounting plates as shown in Figure 25 Tighten connection Use 7 8 x 2 1 2 bolts and nuts Figure 25 Loosen rubber boot from end of jackscrew Turn elevation drive screw to extend jack to dim...

Страница 24: ...and flatwasher according to A 325 procedure with the exception of tightening the nut 1 2 turn from snug condition Tighten jam nut in accordance with A 325 procedure Apply supplied Loctite to threads t...

Страница 25: ...jackscrew tube Note Ensure jackscrew assembly remains fully retracted at this time Figure 29 Apply RTV to flange surface as shown in Figure 29 Fasten jack to pivot using 7 8 x 2 3 4 in 70 mm bolts and...

Страница 26: ...cedures Attach rear pad assemblies to rear foundation pads as pictured in Figure 31 Figure 31 Connect beam assembly using 7 8 x 2 1 4 in 57 mm hardware Tighten supports to beam assembly per A 325 tens...

Страница 27: ...to 201327A joint assembly with 7 8 x 2 1 4 hardware from pivot assembly to joint assembly as shown in Figure 32C Note Use one 7 8 by 2 3 4 inch 70 mm bolt flat washer and nut for later attachment of g...

Страница 28: ...int Refer to installation instructions provided with motor kits Refer to Figure 34 Position hoisting ropes on motor jack assembly so jack will not roll when hoisted Attach one rope to large motor fram...

Страница 29: ...and lower collars of pin assembly at end of azimuth jack Do not retighten these collars Apply supplied Loctite to pin threads and nuts Attach 1 1 2 in 38 mm hex nuts to top and bottom of azimuth jack...

Страница 30: ...to the A 325 tensioning pro cedure in preceding installation text CAUTION Adhere to any special instructions sten ciled on crate relative to crate opening contents removal and or personnel safety Pre...

Страница 31: ...ign tabs on 77639 feed rotating tube assembly with corresponding tabs on drum assembly Attach rotating tube to center of drum assembly using 3 8 x 1 3 4 in 44 mm bolts lockwashers and nuts as shown in...

Страница 32: ...g upward Fully tighten flange to drum connection hardware Attach circular waveguide assembly to 201606 feed horn assembly as shown in Figure 39 Note Deep recess end of mounting pipe flange should be o...

Страница 33: ...n Procedures Attach 77646 2 feed horn mounting pipe to 201606 301808 feed horn assembly as shown in Figure 40 Use 1 2 x 2 1 2 in 63 mm hex screws lockwashers and nuts Insert bolts from feed horn to mo...

Страница 34: ...ch feed horn mounting pipe assembly to rotating tube as shown in Figure 41A Install 201065A circular waveguide support assembly as shown in Figure 41B Use 1 2 x 2 in 51 mm bolts lockwashers and nuts I...

Страница 35: ...Step 9 35 Installation Procedures Figure 42 Rotate drum assembly into upright position Level drum with shims until no side can bounce as shown in Figure 42...

Страница 36: ...kstructure Assembly Step 1 36 Installation Procedures Attach back strut assemblies to lower drum ring brackets as shown in Figures 43 and 44 Use 1 2 x 1 1 2 in 38 mm bolts lockwashers and nuts Figure...

Страница 37: ...d condition when adding panels one at a time Figure 45 Install reflector panel segment 1 with the center of the Andrew flash logo to upper drum ring assembly ring bracket 180 opposite tripod mounting...

Страница 38: ...38 Installation Procedures Figure 47 Center portion of Andrew flash logo...

Страница 39: ...hown in Figure 48 Use minimum torque to tighten hardware connecting back strut to reflector segment reflector segment to upper drum ring assembly and back strut to lower ring drum assembly Use 1 2 x 1...

Страница 40: ...nstall panel seam hardware connecting panel segments 1 and 2 with step ladder Do not tighten Use 5 16 x 3 4 in 19 mm special bolts 3 8 in flatwasher 5 16 in lockwasher and 5 16 in nut as shown in Figu...

Страница 41: ...g to Steps 4 thru 6 and Figure 51 Figure 51 Continue installing panel segments as described in Steps 4 thru 7 in counter clockwise direction as shown in Figure 52 Note Panels are numbered and should b...

Страница 42: ...hardware corresponding to bolt hole ring 11 located above reflector tee segment back strut assembly connection Continue tightening ring 11 reflector seam hardware working counterclockwise Figure 53 Ti...

Страница 43: ...ly ring and back strut assembly pairs Continue tightening attaching hardware on all reflector segments Install 170147 quadrapod plates at positions indicated in Figure 54 according to proce dure in Fi...

Страница 44: ...s Subreflector Strut Assembly Step 1 Attach subreflector strut assemblies to 170147 quadrapod plates as shown in Figures 56 and 57 Tighten hardware until snug only Use 1 2 x 1 1 2 in 38 mm bolts lockw...

Страница 45: ...45 Installation Procedures Figure 57...

Страница 46: ...46 Installation Procedures Attach subreflector strut assemblies to opposing sides of 77943 apex bracket as shown in Figures 58 and 59 Use 1 2 x 1 1 4 in 32 mm bolts lockwashers and nuts Figure 58 Fig...

Страница 47: ...sition as shown Do not tighten mounting hardware Use 1 2 x 1 1 4 in 32 mm holts flatwashers lockwashers and nuts Figure 60 Fully tighten quadrapod plates to reflector segments struts to quadrapod plat...

Страница 48: ...lines for proper guidance as shown in Figure 63 Attach rear of drum assembly to elevation axis assembly using 300037 spac ers 3 4 x 4 in 102 mm bolt and nut assemblies and flat washers Align mounting...

Страница 49: ...49 Installation Procedures Figure 63 Figure 64...

Страница 50: ...her nut and jam nut Figure 66 Figure 65 Refer to Figure 66 Measure and note the distance between either outermost angle clip bolt head and the subreflector rim Obtain the corresponding measurements fr...

Страница 51: ...s of the subreflector are uniform Adjust the jam nuts and securely tighten the adjustment hardware Adjust subreflector hardware to obtain appropriate setting from surface of reflector at seam bolt rin...

Страница 52: ...pply supplied 203233 2 conductive grease to all connection surfaces prior to and after instal lation Thoroughly remove conductive grease from hands and tools using soap and water Refer to Figure 68 At...

Страница 53: ...d of cable to existing 5 8 by 2 inch 51 mm bolt on tripod as shown Attach sec ond grounding cable to other side of elevation axis panning frame assembly Attach foundation grounding cable connectors to...

Страница 54: ...on how to correctly position your antenna on the desired satellite There are several procedures that may be used to properly acquire the satellite Andrew recommends that a spectrum analyzer be used T...

Страница 55: ...me condition occurs Return to the position yielding the greatest amplitude The maximum azimuth excursion from the original setting should not exceed plus or minus 1 5 degrees or the antenna may begin...

Страница 56: ...r the antenna is aligned in azimuth and elevation signal maximized and 24 transponder signals 12 horizontal and 12 vertical are noted the polarization adjustment is set incorrectly and must be modifie...

Страница 57: ...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...

Страница 58: ...tom side of the subreflector should be adjusted downward by loosening the screws between the subreflector and the struts and adjusting the bottom side of the subre flector downward An easy way to reme...

Страница 59: ...The following paragraphs describe the inspection and preventive maintenance proce dures for the earth station These instructions include general cleaning and inspection the preservation of metal parts...

Страница 60: ...d repaired or replaced immediately or at the conclusion of the inspection procedure Inspection of the local control motor drive controller conforms generally to standard visu al inspection procedures...

Страница 61: ...ther possible water entry to the enclosed electrical components in order to maintain a waterproof con dition Check or change humidity absorber Inspection of the antenna conforms generally to standard...

Страница 62: ...tachment and the cable insulation for cuts cracking abrasion and other deterioration Check the LNA or LNB s and the resolvers for a secure mechanical attachment Ensure proper torquing of polarization...

Страница 63: ...disconnect as applicable the RF transmitter and all power supplies The main disconnect switch in the main load center box at the antenna site must be in the ON position and the LOCAL REMOTE switch in...

Страница 64: ...tenna 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 s...

Страница 65: ...he primed surfaces and blend with the existing painted surface Remove all loose paint and corrosion by scraping wire brushing or using steel wool Edges of existing paint can be blended with the metal...

Страница 66: ...assemblies to ensure adequate lubrica tion Loosen Jackscrew boot clamps to expose the lifting screw assembly Fully extend jackscrew assembly being careful not to exceed preset mechanical limits Brush...

Страница 67: ...iate Gearbox I C Pipe Plugs SHC624 34 Oz Fill and Drain 9 Polarization Drive Gear X Brush SHC32 Minimum Surface Coverage 10 Feed Rotation Worm Gear X Pressure Fitting SHC32 2 Pillow Blocks X Lubricate...

Страница 68: ...re Fitting Gearbox Fill Gearbox Vent Gearbox Level Gearbox Fill Gearbox Vent Gearbox Level Polarization Drive Gear Worm Gear Pillow Blocks 2 Note Medium speed motors shown for illustrative purposes on...

Страница 69: ...7 8 4 1 2 3 Local Motor Control Heater Control Pressure Fitting Pressure Fitting Gearbox Level Gearbox Drain Gearbox Level Gearbox Drain Polarization Drive Gear Worm Gear Pillow Blocks 2 Pressure Fit...

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