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Technical

Assistance

24-hour Technical Assistance

For technical assistance, call the following numbers at anytime.

Call From

Call To

Telephone

Fax

North America (toll free)

U. S. A.

1-(800)-255-1479

(800)-349-5444

Any Location

U. S. A.

(708)-349-3300

(708)-349-5410

(International)

Customer Service Center

The Andrew Customer Service Center gives you direct access to the information and
personnel service you need, such as the following:

•

Place or change orders

•

Check price and delivery information

•

Request technical literature

You can call from any of the following:

Call From

Telephone

Fax

North America

1-800-255-1479 (toll free)

1-(800)-349-5444 (toll free)

United Kingdom

00-800-0-255-1479 (toll free)

00-800-0-349-5444 (toll free)

Australia

0011-800-0-255-1479 (toll free) 0011-800-0-349-5444 (toll free)

China

00-800-0-255-1479 (toll free)

00-800-0-349-5444 (toll free)

New Zealand

00-800-0-255-1479 (toll free)

00-800-0-349-5444 (toll free)

Hong Kong

001-800-0-255-1479 (toll free) 001-800-0-349-5444 (toll free)

Introduction

Содержание ES24SNG-LTE

Страница 1: ...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 S A 7 02 Copyright 2002 by Andrew Corporation Operation and Maintenance Bulletin OM24SNG RC Type ES24SNG LTE 2 4 Meter SNG 2 4 Meter SNG Earth Station Antenna ...

Страница 2: ...roduction 7 Antenna Drive System Cable Inspection 7 Cable Replacement 8 Azimuth Rotational Limits 8 Azimuth Drive Cable Tension Adjustment 10 Elevation Drive Cable Tension Adjustment 13 Controls and Power Failure 14 Azimuth Drive 14 Elevation Drive 16 Replacement Azimuth Brake Replacement 17 Elevation Brake Replacement 21 Antenna Electrical 22 Antenna Mechanical 23 Antenna Dimensions 24 Table of C...

Страница 3: ... in part without express written consent of Andrew Corporation Andrew Corporation provides a world wide technical support network Refer to the tech nical assistance portion of this this manual for the contact numbers appropriate to your location The installation maintenance or removal of antenna systems requires qualified experi enced personnel Andrew installation instructions have been written fo...

Страница 4: ...ed such as the following Place or change orders Check price and delivery information Request technical literature You can call from any of the following Call From Telephone Fax North America 1 800 255 1479 toll free 1 800 349 5444 toll free United Kingdom 00 800 0 255 1479 toll free 00 800 0 349 5444 toll free Australia 0011 800 0 255 1479 toll free 0011 800 0 349 5444 toll free China 00 800 0 255...

Страница 5: ...nt to confirm that a circuit is at ground potential before touching it Never reach into or enter an enclosure to service or adjust the equipment until the absence of power has been confirmed Do Not Service Or Adjust Alone Under no circumstances should any person reach into the enclosure for the purpose of servicing or adjusting the equipment except in the presence of someone who is capable of rend...

Страница 6: ...llite news gathering applications The exclusively designed prime focus beam shaping feed configuration together with the precision hydroformed aluminum reflector assembly produces extremely high gain superior efficiency and closely controlled pattern characteristics A motorized cable drive system provides a reliable precise and smooth running system The SNG antenna options are the RCI 3000 and 305...

Страница 7: ...placement Operation with less than the total number of cables is not recommended as normal oper ational mode however the drive will function with reduced stiffness temporarily while awaiting replacement cable installation Drive cables should be periodically checked for cable misalignment or visible damage that might lead to broken wires and or tangled cables Look for frayed broken cable wires that...

Страница 8: ...uck the azimuth hard limits may have been changed by the integrator to less than 175 of rotation If the azimuth hard limits are at 175 the following procedure WILL NOT be necessary Skip down the following Procedure and start at section marked CABLE TENSION ADJUSTMENT AZIMUTH DRIVE If the azimuth hard limits are configured for 135 or 90 the following provisions will need to be made prior to startin...

Страница 9: ... CCW Az Limit 2 135 CCW Az Limit 3 175 CCW Az Limit 4 175 CW Az Limit 5 135 CW Az Limit 6 90 CW Az Limit Azimuth Cable Tension Access Port Azimuth Ring Azimuth Limit Switch Location Reflector Assembly Azimuth Drive Motor Antenna Panning Frame Overhead View of Antenna Note Resolver assembly and associated mounting bracketry not shown for clarity ...

Страница 10: ...nother as they wrap around the drum height centering Rotate drum if necessary to align cables Remove the rear rain shield which covers the azimuth axis opening Remove cable tension access port cover located near azimuth drive gear reducer Starting from the stowed position deploy antenna and rotate in azimuth approximately 80 clockwise to align access port on panning frame with spring end of cables...

Страница 11: ...ing Location of Precision Key Stock Insertion Point Loosen the adjusting nut just slightly so that the key stock will move freely up and down and allow setting clearance on subsequently adjusted cables Figure 3 Figure 3 Adjusting Azimuth Cable Tension Repeat step 5 for the next cable adjusting nut s Return antenna to azimuth stowing position while maintaining current antenna elevation From the sto...

Страница 12: ...ion at both ends of azimuth cable s in accordance with the above recommended procedure Repeat above cable tensioning procedure if necessary If changed earlier reset the software limits and reconfigure the hardware limits for counter clockwise azimuth rotation to their previous value location Return antenna to stow position before relocating any hard limit actuation blocks see section titled Azimut...

Страница 13: ...ble location in the eleva tion spring housing Figure 5 Figure 5 Individual Slots for Precision for Precision Key Stock After verifying performing elevation cable tension procedure on both ends of each cable and each elevation drum cable assembly the following steps two through four will com plete this procedure Run elevation drive system through entire range of movement 0 to 66 elevation sev eral ...

Страница 14: ...rmine direction of rotation to return anten na to stow position Locating the brake cover on the azimuth drive motor located on the free hanging end of the drive motor assembly Figure 6 is the brake cover Carefully remove the brake cover attached with two wing nuts being careful to retain the nylon washers under the wing nuts required for watertight seal Figure 6 Location of Azimuth Brake Assembly ...

Страница 15: ...ed a black red disk assembly brake clutch mechanism will begin to rotate as the motor free wheels This may be used as a visual sign that brake disengagement has been achieved Release the brake and rotate in azimuth to achieve azimuth stowing position The end of the feed boom may be used as a push point for azimuth rotation only during power loss Install the brake cover with the nylon washers and w...

Страница 16: ...d in the Pproper Direction by a Second Person As the Feed Boom Approaches a Horizontal Position Care Must be Taken During Manual Brake Release as the Stowing Boom Will Pass Through the Access Area to the Brake Coordinating With a Second Person Assisting Guiding Reflector to Stow Position Brake Release Operator Will Need to Work Carefully Around Closing Reflector Assembly Avoiding Scissor Action of...

Страница 17: ... 4 Lumber 5 foot long 5 32 Allen Wrench This Procedure Should Only Be Performed In Non Windy Conditions Winds Under 15 mph When the Brake Is Removed the Antenna Will Be Allowed to Freewheel Two Persons Are Required To Safely Remove and Reinstall the Brake Assembly One Person To Perform the Replacement and the Other To Hold the Antenna In Position Turn Off Main Power Source To the Controller System...

Страница 18: ... nut shaft will be allowed to move freely If wind or gravity force is present on the antenna the nut shaft may start to turn If it turns the second person should steady the antenna movement until the new brake is installed Lay aside the brake body brake cover and connecting wire until later instructions Refer to Figure 3 Retain removed hardware for later use Figure 3 18 Brake Release Hardware Brak...

Страница 19: ...ove the two black wires from the old brake body from their wirenuts attached to the red and black wires Install the new brake body wires in the same manner as the old ones were removed Either black brake wire may be connected to either the red or black wires polarity is not important Be sure not to reverse the wiring of the diode POLARITY DOES MATTER ON THE DIODE Be sure wire nut setscrews are sec...

Страница 20: ...cover removing any shavings or debris Refer to Figure 6 Figure 6 There are two ways the cover may be installed Install the brake cover with the weep hole facing down Use the nylon washers under the wing nuts to provide a water tight seal as detailed in Figure 7 Figure 7 This completes the replacement of the azimuth brake assembly The antenna control power should now be turned back on and the azimu...

Страница 21: ...d the Antenna In Position Locate the elevation brake at the front of the azimuth panning frame Refer to Figure 8 Figure 8 Due to the weight of the boom the elevation boom and reflector must be sup ported during the elevation brake replacement process The antenna elevation axis should be driven to an angle high enough to provide clearance to work under the boom on the brake assembly A 2 X 4 inch pi...

Страница 22: ...tions at 68 F 20 C at the circular waveguide flange of the feed Elevation Ku Band 2 Port Ku Band 4 Port 10 44 72 30 33 61 Antenna VSWR Transmit and Receive 1 3 1 Radiation Pattern Performance PE s 4471 and 4472 Tx Power Handling Capability 2 Port Network maximum W 2000 4 Port Network maximum W 600 Feed Interface Flanges Receive Transmit WR75 Isolation minimum Tx into Rx dB 40 2 Port 85 4 Port Powe...

Страница 23: ...to 65 mph 105 km h Temperature Operational 40 to 125 F 40 to 52 C Rain 4 in 102 mm per hour Solar Radiation 360 BTU hr ft2 1135 Watts m2 Relative Humidity 100 Atmospheric Conditions Moderate coastal industrial areas Severe conditions require additional protection Positioner Travel Rates degrees per second Elevation 0 25 to 1 0 second Azimuth 0 25 to 1 0 second Polarization 0 5 to 2 0 second Weight...

Страница 24: ...rall Dimensions Side View Azimuth Axis 9 11 2 7 7 4 5 1 6 2 12 15 2 0 8 x ø 562 ø 11 5 ø 16 25 11 25 45 Stowed Antenna Position Mounting Pattern on Truck Approximate Antenna Weight Distribution 4 9 4 6 Elevation and Articulation Axis 2 2 2 Antenna CG 690 lbs Reflector Only 177 lbs 1 9 9 Boom Only CG 126 lbs no electronics Mount Only CG 387 lbs Azimuth Axis 1 12 16 9 ...

Страница 25: ...and Articulation Axis 8 4 6 5 Azimuth Axis 1 6 3 1 2 0 Note Antenna Shown at 65 Elevation 7 7 R 4 9 R Azimuth Axis 1 8 R Elevation and Articulation Axis Antenna Clearance Envelope Top View 1 5 1 5 Boom Stop 2 2 x 3 x 1 4 x 6 lg Azimuth Axis Elevation and Articulation Axis 1 10 7 15 8 5 7 6 6 67 7 Antenna Clearance Envelope Side View Note Antenna Shown at 0 Elevation X ...

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Andrew ES24SNG-LTE, Эксплуатация и обслуживание

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