Gebruiksaanwijzing /service van het product ES76PK-1 van de fabrikant Andrew
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Andrew Cor poration 10500 West 153rd S treet Orland Park, IL U.S.A. 60462 T elephone: 708-349-3300 F AX (U.S.A.): 1-800-349-5444 Internet: http://www .
Introduction How to Use This Manual Getting Star ted Installation Procedures Operation Prev entive Maintenance T able of Contents 2 T a ble of Contents Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction Like all Andrew earth station antennas, the 7.6-Meter Earth S tation 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.
24-hour T echnical Assist ance For technical assistance, call the following numbers at anytime. Call From Call T o T elephone Fax North America (toll free) U.
Ov er view Content The scope of this manual is intended to provide station personnel with the base inst alla- tion, operation, and maintenance requirements necessary for a 7.
Ov er view Warnings The installation, operation, and maintenance of the 7.6-Meter Earth S tation Antenna requires qualified and experienced personnel. Andrew installation, operation, and main- tenance instructions are illustrated for such personnel.
R ecommended T ools NOTE: Failure to follow an installation procedure could result in damage to equipment or personal injury . Additional warnings will be displayed throughout this manual for your awareness. These warnings can be identified in warning boxes as shown in the following sample.
Par ts V erification R e por ting Equipment Loss or Damage R e por ting Visible Loss or Damage R e por ting Concealed Damage Inv entor y Equipment R eceiv ed Upon receipt of your order , the shipment should be verified to ensure that all parts have reached your site.
R etur ning Equipment Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 Andrew Corporation tries to ensure that all items arrive safe and in working order . Occasionally , despite these effort s, equipment is received which is not in working condi- tion.
Ov er view Founda tion Pre paration 10 Installation Procedures This section provides installation procedures for the 7.6-Meter Andrew Earth S tation Antenna.
A-325 T ensioning Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 Ste p 6 11 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.
P edestal Ground Mount Assembly P edestal Installation Ste p 1 Ste p 2 12 The Pedestal Mount is an elevation-over-azimuth mount optimized for geost ationary satellite applications. The mount enables continuous elevation adjustment from 0 to 90 degree.
Ste p 3 13 Using the 1-1/4 in. foundation hardware supplied, level the pedestal to within +/-0.1 degrees. T ighten each anchor bolt to 912 lb/ft (126 kg/m) as shown in Figure 4. Note: T ighten each bolt using no more than 300 lb/ft (41.5 kg/m) at a time in tightening sequence shown.
Ste p 4 Ste p 5 Ste p 6 Azimuth J ack Ar m Installation Ste p 1 14 Place Anchor Plates (17531 1) over the corresponding anchor bolts as shown in Figure 3. Note: Ensure anchor plates are oriented on the foundation bolt s as shown, level and on same datum as the pedestal assembly .
Azimuth J ackscrew Assembly Ste p 1 16 Raise the Azimuth Jack assembly into place and attach it to the pedestal assembly as shown in Figure 7. NOTE: The bolts att aching the trunnion to the jack are supplied loose, this hardware must be torqued once the jack is installed and aligned (see Figure 7).
Ste p 2 17 Attach Azimuth Jack rod end assembly to the Azimuth Jack Arm as shown in Figure 8. • Use Azimuth Pin (302168) and 3/8 x 1 in. capscrew , washer and lock washer . Installation Procedures Figure 8 (AZ Jack Pin, 302168) 1-1/4” W asher, 9997-188 (2) (AZ Jack, 302281) AZ Jack Pin, 302168) (302383) 3/8”x1.
Ele v ation J ackscrew Assembly Ste p 1 19 Installation Procedures Raise and attach the Elevation Jack assembly to the pedest al assembly as shown in Figure 10.
R eflector/ Backstructure Assembly Ste p 1 20 Installation Procedures Figure 1 1 W ARNING Assembly and installation of Reflector/Backstructure should only t ake place when winds are less than 15 mph (24 km/h) to prevent damage to reflector panels and ease the assembly process.
Ste p 2 Ste p 3 21 Installation Procedures Once all 16 Short S truts are inst alled and securely fastened, re-install Rear Enclosure Panel. Carefully rotate the enclosure right-side-up as shown in Figure 12. Place tempo- rary wood blocks under each of the enclosure’s three support p ads with the additional block positioned in between.
Ste p 4 22 Installation Procedures Install Outer S trut to assembly as shown in Figure 13. Leave hardware loose. Figure 13 V iew A-A Eccentric Bolt, 300084A W asher, 9997-101 1/2” Locknut, 9979-54 (.
Ste p 5 23 Installation Procedures Lift truss/rib assembly and inst all Long S trut as shown in Figure 14. Note: the Long S trut is installed on the opposite side of the T russ Plate. Refer to Figure 12, View D-D for pre- viously installed hardware for Inner S trut to T russ Plate connection.
Ste p 7 24 Installation Procedures Attach stretch-formed Skirt s (222765-2), S trip S pacer (300040) and Inboard Skirt (300082-2) to Reflector Panels (222677) before attaching p anels to ribs. Refer to Figure 15, Section A-A & View B-B. Do not inst all outer-most screw on each side of skirt at this time.
Ste p 8 Ste p 9 Ste p 10 25 Installation Procedures Attach the reflector p anels by placing them on the ribs and sliding them inward, carefully guiding the rib flange between the skirt and panel. Place seam hardware (209236 & 9974-17) in the fourth hole from the outboard edge on both sides of the panel first, fin- ger tight only .
Ste p 11 26 Installation Procedures After all 16 reflector p anels are fastened to ribs. Attach the Cross S truts (300078) by placing them in-between the Inner S truts (300080) and snug tight the hardware. Refer to Figure 16. After all 16 Cross S truts are attached, tighten all hardware.
Customer-Supplied Theodolite Wild Heerbrugg T2 or T opCon Digital DT -05 or 05A X-Y Dual Axis Translation S tage Rotary Precision Lift (Rotate to Adjust Height) 18.
1.3 Install Brass Rod Holders: Install brass rod holders in seam hole #1 1 on rib #2, 7, & 10 in Figures 19 and 20. Reflector seam screws must first be removed in these locations. Make sure the bottom of the rod holders are sitting flush on the reflector panels and they are pointed toward the theodolite assembly .
Ste p 2 1.5 “Clock" the Theodolite Assembly: Refer to Figure 20. The theodolite support assembly must be 'clocked' to the brass rod holders such that two of the tribrach leveling screws run parallel with ribs 2 and 10 (see enlarged view in Figure 20).
30 Installation Procedures Relocate stick to rib #7. Rotate theodolite, focus and adjust elevation to the scribe line and record this reading as R2. Relocate stick to rib #10. Rotate theodolite, focus and adjust elevation to the scribe line and record this reading as R3.
31 Installation Procedures Repeat the above procedure for the other axis of the X-Y translation st age 90 degrees to the first one. After centering, adjust the theodolite height as indicated below . 2.4 Adjust Height: The height adjustment of the theodolite is accomplished with the precision lift (refer to Figure 18).
32 Installation Procedures Ste p 3 R eflector Alignment Relocate the stick to rib #7. Focus and adjust the elevation to align to stick scribe line. Reord as H3. The specification for height requires that H1, H2 & H3 be within +/-15 seconds (0.0042 degrees) of 90 degrees.
33 Installation Procedures 3.3 Rough Outboard Alignment: Adjust theodolite elevation angle to the ‘EL1’ value indicated in Figure 19. Point and focus the scope of the theodolite to target EL1 (do not move elevation) located on the rib #1, which is to the right of the top panel (top center of antenna with Andrew `Flash’ logo).
3.5.3 Repeat all 16 adjustments again. This time, after each individual adjustment, fully tighten seam hardware #24 and 25 on the rib being adjusted. The outer ring of the reflector is now `locked’ in place.
R eflector to Ground Mount Assembly Ste p 1 35 Installation Procedures Attach 16f t. (5m) chokers with corresponding 5/8” shackles to the Lifting T abs (206278). Attach 30f t. (9m) tag lines of suitable rope equally sp aced about reflector (refer to Figure 22).
Subreflector Installation Ste p 1 Ste p 2 36 Installation Procedures NOTE: Ensure that the Feed System is installed prior to inst allation of Subreflector and S truts.
Ste p 3 Ste p 4 37 Installation Procedures Refer to Figure 23, View A-A and Figure 24. Loosely att ach Subreflector S trut Supports (300089) to panel segement s 8-16, 3-1 1, 7-15 and 4-12 as shown. Replace screws, washers, lockwashers and nuts previously inst alled during reflector assembly .
Ste p 5 Ste p 6 38 Installation Procedures Carefully raise and attach pre-assembled subreflector/strut assembly to corresponding subreflector strut supports as shown in V iew A-A (Figure 23) and Figure 25 using sup- plied hardware.
Subreflector Centering Ste p 7 Subreflector Focusing Ste p 8 Ste p 9 39 Installation Procedures Measure and note the distance between outermost subreflector strut support bolt head and the subreflector rim as shown in Figure 25. Obtain corresponding measurement s from remaining subreflector struts.
Ov er view Acquiring A Satellite 40 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 .
Ste p 1 Ste p 2 Ste p 3 Ste p 4 41 The following steps provide the procedure for acquiring a satellite. Manually move the antenna in the azimuth (scanning back-and-forth) to achieve the maximum (greatest amplitude) transponder signals.
Ste p 5 Ste p 6 Ste p 7 Ste p 8 42 If the signal amplitude diminishes and does not increase (position B) to the level noted when the antenna was peaked on the side lobe, the antenna is moving away from the main beam; reverse the direction of the antenna movement.
Ste p 9 43 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.
Subreflector Adjustment Sur viv al Struts 44 Operation After the satellite has been acquired and testing has t aken place with the spectrum analyzer , the subreflector may need to be adjusted to maximize optimum performance of your anten- na.
Ov er view General Cleaning Electrical Par ts 45 Prev entiv e Maintenance This section contains periodic preventive maintenance instructions for the 7.
Mechanical P ar ts Machined Surfaces (Not Galv anized) Inspection Local Control/Motor Driv e Controller 46 Clean mechanical part s 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.
Antenna 47 • Check all electrical components for dirt, cracks, chip s, breaks, discoloration and other signs of deterioration and damage. A discolored, blistered, or burnt condition is evidence of overload. Measure actual value of suspect electrical components and comp are against specified value.
48 • Check all electrical component for dirt, cracks, chips, breaks, discoloration, and other signs of deterioration and damage. A discolored, blistered, or burnt condition is evidence of overload.
Driv e System V olta g e and Cur rent Checks Ste p 1 Ste p 2 Ste p 3 49 • Visually inspect all mechanical p arts for freedom of operation with no misalignment, binding or interference. Check all cabling for sufficient slack to prevent cable strain as well as adequate restraint to prevent abrasion or chaffing during antenna and feed movement.
Ste p 4 Ste p 5 Ste p 6 Ste p 7 Ste p 8 Ste p 9 50 the installation/accept ance check off. If the readings differ by more than five percent, refer to appropriate troubleshooting information and perform applicable corrective action.
Preser v ation of Component Par ts Aluminum P ar ts Galv anized Surfaces Lubrication 51 When preserving the component part s, refer to the following paragraphs in this section. Remove all loose paint and corrosion by scraping, wire brushing, or using steel wool.
J ackscrews/Motors Gear Motor/Housing Fill Drain R equirements 52 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.
53 Prev entiv e Maintenance Lube Components Frequency T ype T ype No. of Lube Point to be (Months) of of Points or No. Lubricated 1361 2 Service Lube Quantity 1. Azimuth/Elevation Jackscrew Housing X Pressure Fitting SHC32 1 2. 1 Azimuth/Elevation Jackscrew Gear I* C** Pipe Plugs SHC624 10 Oz Housing Fill and Drain 3.
Antenna Lubrication Points 3 4 1 2 Local Motor Control 54 Prev entiv e Maintenance Gearbox Drain Gearbox Level Pressure Fitting 5 Pressure Fitting 5 Pressure Fitting 6.
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