Benutzeranleitung / Produktwartung OM24SNG-RC des Produzenten 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 .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 Printed in U.
Introduction Description Maintenance Emergency Procedures Component R e placement Specifications Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pur pose Proprietar y Data Infor mation and Assistance Notice The purpose of this manual is to provide installation and preventive maintenance required to support the 2.
T echnical Assistance 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.
Safety Summar y The following general safety precautions are not related to any specific procedures and, therefore, do not appear elsewhere in this publication. Personnel must understand and apply these precautions during all phases of operation and maintenance.
Antenna The 2.4-meter transportable SNG antenna from Andrew has been designed to be more compact and lighter . This new design result s in an antenna whose total assembly weight has decreased by 33%. This antenna design reduces overall windloading, is easier to install and is less costly to ship.
General Introduction Antenna Driv e System Cable Inspection 7 Maintenance Maintenance The antenna and feed boom/reflector assembly incorporates self lubricating bearing assemblies throughout its construction, eliminating the need for any additional lubrication for the life of the antenna.
Cable R e placement Azimuth R otational Limits 8 Maintenance The two adjustment locations for the five azimuth cables are 224° apart on the azimuth ring. T o reach these adjustment locations the antenna must be rot ated so the azimuth cable access port is over the adjustment location.
9 Maintenance Note AZ East = AZ Counter-clockwise (as viewed from above) AZ West = AZ Clockwise (as viewed from above) Azimuth Hard Limit Positions: 1=90° CCW Az Limit 2=135° CCW Az Limit 3=175° CC.
Azimuth Driv e Cable T ension Adjustment Ste p 1 Ste p 2 Ste p 3 Ste p 4 10 Maintenance CAUTION! Before/during the initial azimuth rot ation of the re-calibrated antenna, verify by inspection that there are no pinch point s with any antenna accessories (example: waveguide, cables, etc.
Ste p 5 Ste p 6 Ste p 7 Ste p 8 Ste p 9 11 Maintenance Insert the precision key stock into the vertical slot in the azimuth spring housing, see Figure 2 (the key stock acts as a thickness (feeler) gau.
Ste p 10 Ste p 11 Ste p 12 Ste p 13 Ste p 14 12 Maintenance CAUTION! Be sure no interference is present in and around the azimuth axis opening during antenna rot ation. After tensioning both ends of azimuth cable assembly , rotate azimuth to limits of travel (clockwise and counterclockwise) several times to distribute cable tension evenly .
Ele v ation Driv e Cable T ension Adjustment Ste p 1 Ste p 2 Ste p 3 Ste p 4 13 Maintenance Adjustment of the elevation cable tension does not require a unique elevation angle, only an elevation angle that allows convenient access to cable tension adjusting nuts (Figure 4).
Controls and P ow er Failure Azimuth Driv e Ste p 1 Ste p 2 Ste p 3 In the event of power loss or controller failure with antenna deployed, the following pro- cedure will allow the antenna to be returned manually to stow position. Notice! Stowing antenna without power requires two personnel to safely return antenna to stowed position.
Ste p 4 Ste p 5 Ste p 6 Ste p 7 Using a 5/32” Allen wrench, turn the two manual release screws counter-clockwise until the brake releases (Figure 7).
Ele v ation Driv e Ste p 1 Ste p 2 Ste p 3 With the azimuth orientation of the antenna correctly oriented for stowing, locate the brake cover on the elevation drive motor , (the same size and type of motor is used for both elevation and azimuth drives) and follow the same procedure required for azimuth brake release.
Azimuth Brak e R e placement Pur pose R equired T ools (Customer- Supplied) Caution Ste p 1 Provide instruction to remove and replace the azimuth and/or elevation brake assembly used on the ESA24SNG-L TE-XX Series 2.
Ste p 2 Ste p 3 Remove the two wingnuts and two nylon washers att aching the brake cover . Refer to Figure 2. Retain removed hardware for later use. Figure 2 Remove the two 8-32 nuts securing the brake body to the brake base. Once the brake body is removed a large nut attached to the motor shaf t and the motor shaft will be revealed.
Caution Ste p 4 Ste p 5 New Threadlocker Must Be Applied T o the Brake Nut Set screws T o Prevent Premature Brake Failure! Install new brake body on 8-32 studs until seated on brake nut and flush as detailed in Figure 4. After disc is centered brake nut may be rotated slowly to allow brake nut to line up with brake disc.
Ste p 6 Ste p 7 Locate the small weep hole in the brake cover near the hole for the protective tubing. It may be painted closed and easier to locate from inside the cover . Use the 1/16 inch drill bit to drill a 1/16 inch hole enlarging and cleaning out this existing hole.
Ele v ation Brake R e placement Caution Ste p 1 Ste p 2 The elevation brake replacement procedure is identical to the azimuth brake replacement. Refer to the previous azimuth procedure for det ails. This Procedure Should Only Be Performed In Non-Windy Conditions (Winds Under 15 mph).
Antenna Electrical Operating Frequency Band Ku-Band Receive Ku-Band T ransmit 10.95-12.75 GHz 14.0-14.5 GHz Gain at circular waveguide flange of feed 2-Port Rx Frequency Rx Gain Tx Frequency Tx Gain 1 1.950 GHz 47.7 14.25 GHz 49.2 4-Port Rx Frequency Rx Gain Tx Frequency Tx Gain 1 1.
Antenna Mechanical Configuration ESA24SNG-L TE Feed T ype Prime Focus, Offset Reflector Material Precision-Formed Aluminum Reflector Segments 1 Mount T ype El over Az, Pedestal Material/Finish Reflector Aluminum Feed Brass Positioner Aluminum Feed Arm Capacity 180 lbs Area 29.
Antenna Dimensions 24 Specifications Antenna Overall Dimensions - T op View 10’-0” 8’-3” Elevation and Articulation Axis Note: Antenna Shown in S towed Position X Y Antenna Overall Dimensions - Side View Azimuth Axis 9’-1 1” 2’-7” 7’-4” 5” 1’-6” 2” 12” 15” 2’-0” 8 x ø .
Antenna Dimensions 25 Specifications Antenna Clearance Envelope and Center of Gravity - Side View 16’-10” 10’-0” 7’-7” Elevation and Articulation Axis 1” 1 1’-4” 8’-8” 6’-1 1.
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