seatel

Sea Tel, Inc.1035 Shary CourtConcord, CA 94518Tel: (925) 798-7979Fax: (925) 798-7986Email: [email protected]: www.seatel.com Look to the Leader. Look to Sea Tel.

Sea Tel EuropeUnit 1, Orion Industrial CentreWide Lane, SwaythlingSouthampton, UK S0 18 2HJTel: 44 (0)23 80 671155Fax: 44 (0)23 80 671166Email: [email protected]: www.seatel.com

June 30, 2003 Document. No. 120569Revision B

INSTALLATION AND OPERATION MANUALFOR SEA TEL MODEL

9797-32 C-BAND & KU-BAND TX/RX ANTENNAS

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WARNING: RF RADIATION HAZARD

This stabilized antenna system is designed to be used with transmit/receive equipmentmanufactured by others. Refer to the documentation supplied by the manufacturer which willdescribe potential hazards, including exposure to RF radiation, associated with the improper useof the transmit/receive equipment. Note that the transmit/receive equipment will operateindependently of the stabilized antenna system. Prior to work on the stabilized antenna system,the power to the transmit/receive system must be locked out and tagged.

When the transmit/receive system is in operation, no one should be allowed anywhere within theradiated beam being emitted from the reflector.

The ultimate responsibility for safety rests with the facility operator and the individualswho work on the system.

Sea Tel Marine Stabilized Antenna systems are manufactured in the UnitedStates of America.

Sea Tel is an ISO 9001 registered company. Registration Number M2314 issuedNovember 09, 1998.

The Series 97 Family of Marine Stabilized Antenna Pedestals with DAC-97 AntennaControl Unit complied with the requirements of European Norms and EuropeanStandards EN 60945 (1997) and prETS 300 339 (1998-03) on July 20, 1999. SeaTel document number 119360 European Union Declaration of Conformity for MarineNavigational Equipment is available on request.

Copyright Notice

All Rights Reserved. The information contained in this document is proprietary to Sea Tel, Inc.. Thisdocument may not be reproduced or distributed in any form without the consent of Sea Tel, Inc. Theinformation in this document is subject to change without notice.

Copyright © 2000 Sea Tel, Inc.

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Revision History

REV ECO# Date Description By

A N/A 04-30-03 Initial Release MDN

B N/A 06-19-03 Updated formatting style and drawings MDN

9797-32 C/Ku Band Table of Contents

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1. DESCRIPTION AND TECHNICAL DATA...........................................................................................1-11.1. GENERAL WARNING...................................................................................................................1-11.2. SCOPE..........................................................................................................................................1-11.3. PURPOSE.....................................................................................................................................1-11.4. GENERAL CHARACTERISTICS ..................................................................................................1-11.5. DESCRIPTION..............................................................................................................................1-11.6. TECHNICAL DATA ABOVE DECKS EQUIPMENT ......................................................................1-2

1.6.1. ANTENNA REFLECTOR 9797 ........................................................................................1-21.6.2. C-BAND FEED, FILTER and LNC ASSEMBLY...............................................................1-21.6.3. Ku-BAND FEED, FILTER and LNC ASSEMBLY .............................................................1-21.6.4. HIGH POWER AMPLIFIERS ...........................................................................................1-21.6.5. ODU RADIO PACKAGES ................................................................................................1-21.6.6. STABILIZED ANTENNA PEDESTAL ASSEMBLY ..........................................................1-31.6.7. PEDESTAL CONTROL UNIT ..........................................................................................1-31.6.8. UNLIMITED AZIMUTH MULTIPLEXERS (4 Channel).....................................................1-31.6.9. RADOME ASSEMBLY .....................................................................................................1-31.6.10. ENVIRONMENTAL CONDITIONS ABOVE-DECKS EQUIPMENT .................................1-4

1.7. TECHNICAL DATA BELOW DECKS EQUIPMENT .....................................................................1-51.7.1. ANTENNA CONTROL UNIT ............................................................................................1-51.7.2. SATELLITE MODEM........................................................................................................1-51.7.3. SPECTRUM ANALYZER (Optional Equipment) ..............................................................1-51.7.4. ENVIRONMENTAL CONDITIONS BELOW-DECKS EQUIPMENT.................................1-5

1.8. CABLES (CUSTOMER FURNISHED EQUIPMENT)..............................................................................1-61.8.1. SIGNAL CABLES. ............................................................................................................1-61.8.2. CONTROL CABLE...........................................................................................................1-61.8.3. GPS INTERFACE ............................................................................................................1-61.8.4. AC POWER CABLE ABOVE DECKS ..............................................................................1-61.8.5. AC POWER CABLE MARINE AIR CONDITIONER.........................................................1-61.8.6. AC POWER CABLE BELOW DECKS .............................................................................1-61.8.7. GYRO COMPASS INTERFACE CABLE..........................................................................1-6

2. INSTALLATION...................................................................................................................................2-12.1. ABOVE-DECKS EQUIPMENT GROUP........................................................................................2-1

2.1.1. UNPACKING AND INSPECTION ....................................................................................2-12.1.2. RADOME SYSTEM ASSEMBLY (system shipped unassembled)...................................2-12.1.3. RADOME SYSTEM ASSEMBLY (System shipped assembled) ......................................2-22.1.4. SITE SELECTION ABOARD SHIP ..................................................................................2-22.1.5. RADOME INSTALLATION ABOARD SHIP .....................................................................2-22.1.6. COOLING UNIT ASSEMBLY...........................................................................................2-32.1.7. ANTENNA/PEDESTAL MECHANICAL CHECKLIST.......................................................2-3

2.2. CABLE INSTALLATION................................................................................................................2-42.2.1. SHIPBOARD CABLE INSTALLATION.............................................................................2-42.2.2. CABLE TERMINATION AT RADOME .............................................................................2-4

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2.3. ANTENNA CONTROL UNIT INSTALLATION ..............................................................................2-52.3.1. TERMINAL MOUNTING STRIP CONNECTIONS ...........................................................2-52.3.2. CONTROL CABLE CONNECTIONS ...............................................................................2-52.3.3. NMEA GPS CABLE CONNECTIONS..............................................................................2-52.3.4. SHIPS GYRO COMPASS CONNECTIONS ....................................................................2-52.3.5. IF CABLE CONNECTIONS..............................................................................................2-52.3.6. AGC TRACKING CONNECTIONS ..................................................................................2-5

2.4. FUNCTIONAL CHECKS ...............................................................................................................2-62.4.1. ANTENNA PEDESTAL ....................................................................................................2-62.4.2. ANTENNA CONTROL UNIT ............................................................................................2-62.4.3. RADIO M&C.....................................................................................................................2-6

2.5. CHANGING C/KU BAND CONFIGURATION OF THE ANTENNA................................................................2-73. OPERATION........................................................................................................................................3-1

3.1. QUICK START OPERATION ...............................................................................................................3-13.2. FRONT PANEL LAYOUT ....................................................................................................................3-23.3. BASIC KEYBOARD ENTRY.................................................................................................................3-23.4. BASIC DESCRIPTION OF FRONT PANEL KEYS AND THEIR FUNCTIONS ...................................................3-23.5. DISPLAY & ENTRY OPERATION MENUS.............................................................................................3-4

3.5.1. SHIP information menus. .................................................................................................3-43.5.2. SAT information menus....................................................................................................3-53.5.3. ANTENNA information menus..........................................................................................3-63.5.4. MODE Control & Status menus........................................................................................3-83.5.5. SETUP Parameter display and entry menus. ..................................................................3-8

3.6. OPERATION SCENARIOS ..................................................................................................................3-93.6.1. To Toggle Tracking ON/OFF............................................................................................3-93.6.2. To View SHIP Information ................................................................................................3-93.6.3. Entering Ships’ Latitude (LAT) .......................................................................................3-103.6.4. Entering Ships’ Longitude (LON)....................................................................................3-103.6.5. Entering Ships’ Heading (HDG) .....................................................................................3-113.6.6. To View SATELLITE Information ...................................................................................3-113.6.7. Targeting A Satellite (SAT).............................................................................................3-123.6.8. Setting Threshold (manually) .........................................................................................3-123.6.9. Selecting Tracking Receiver Source ..............................................................................3-133.6.10. Tuning The TXRX Tracking Receiver ............................................................................3-143.6.11. To View ANTENNA Information .....................................................................................3-153.6.12. Adjusting Azimuth (step, slew & target)..........................................................................3-153.6.13. Adjusting Elevation (step, slew & target)........................................................................3-163.6.14. Adjusting Polarization.....................................................................................................3-173.6.15. Change Tracking Band...................................................................................................3-173.6.16. Start a Search ................................................................................................................3-183.6.17. Stop a Search.................................................................................................................3-183.6.18. To View ERROR(s) ........................................................................................................3-193.6.19. Clear ERROR(s) ............................................................................................................3-19

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3.7. STABILIZED PEDESTAL ASSEMBLY OPERATION .................................................................3-203.8. RADOME ASSEMBLY OPERATION..........................................................................................3-20

4. TROUBLESHOOTING AND ADJUSTMENTS ...................................................................................4-14.1. THEORY OF OPERATION...........................................................................................................4-14.2. INITIALIZATION SEQUENCE.......................................................................................................4-14.3. PEDESTAL CONTROL UNIT CONFIGURATION........................................................................4-24.4. DISPLAY OFFSET ADJUSTMENTS ............................................................................................4-24.5. ANTENNA PEDESTAL OFFSET ADJUSTMENT.........................................................................4-24.6. BALANCING THE ANTENNA AND EQUIPMENT FRAME ..........................................................4-34.7. ANTENNA POSITION ERROR MONITORING ............................................................................4-34.8. OPEN LOOP SENSOR TEST.......................................................................................................4-44.9. OPEN LOOP MOTOR TEST ........................................................................................................4-4

5. DRAWINGS.........................................................................................................................................5-15.1. MODEL SPECIFIC DRAWINGS ...........................................................................................................5-15.2. SERIES 97 GENERAL DRAWINGS .....................................................................................................5-1

Table of Contents 9797-32 C/Ku Band

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9797-32 C/Ku Band DESCRIPTION AND TECHNICAL DATA

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1. DESCRIPTION AND TECHNICAL DATA

1.1. GENERAL WARNINGIt is the facility operators' responsibility to make sure that everyone involved in the installation, operation andmaintenance of this system is thoroughly acquainted with the required safety procedures BEFORE theyperform any actual work on this system.

1.2. SCOPEThis manual describes the Sea Tel Model 9797 C/Ku Band Stabilized Transmit/Receive antenna systemswith unlimited azimuth and provides installation and operating instructions.

1.3. PURPOSEThe Model 9797 C/Ku Band system provides a fully stabilized antenna system that permits two-way satellitevoice/data communications while underway on an ocean-going vessel. The Unlimited Azimuth feature allowsuninterrupted communications regardless of vessel turning motions.

1.4. GENERAL CHARACTERISTICSThe Model 9797 C/Ku Band systems utilize new torque mode servo stabilization systems which providesunprecedented pointing accuracy to assure stable system performance under all possible sea stateconditions. The system has been designed and manufactured to be inherently reliable, easy to maintain, andsimple to operate. Except for start-ups, or when changing to operate with different transponders or satellites,the equipment permits unattended operation.

1.5. DESCRIPTIONThe Model 9797 C/Ku Band system consists of two major groups of equipment; an above-decks group and abelow-decks group. Each group is comprised of the items listed below.

A. ABOVE-DECKS EQUIPMENT GROUP

1 Antenna Reflector

2 Feed, Filter and Low Noise Amplifier

3 Separate C-Band and Ku-Band Radio Packages

4 Separate C-Band and Ku-Band High Power Amplifiers

5 Stabilized antenna pedestal assembly

6 Pedestal Control Unit

7 Unlimited Azimuth Multiplexer(s)

8 Radome assembly

B. BELOW-DECKS EQUIPMENT GROUP

1 Antenna Control Unit (ACU)

2 Unlimited Azimuth Multiplexers

3 Radio Monitor & Control Multiplexers

DESCRIPTION AND TECHNICAL DATA 9797-32 C/Ku Band

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4 Spectrum Analyzer (Optional)

1.6. TECHNICAL DATA ABOVE DECKS EQUIPMENTThe technical characteristics of each of the above decks equipment subsystems are listed below:

1.6.1. ANTENNA REFLECTOR 9797Type Honeycomb Fiberglass ParabolaDiameter (D) 2.4 Meter Modified OffsetSidelobe: Compliant with Intelsat Standard GVoltage Axial Ratio: 1.3:1, maximum, Receive Band

1.09:1, maximum, Transmit BandFocal Length 38 inf/D 0.245RX Gain 38.5 dBi at 3.95 GHz

47.75 dBi at 11.85 GHzTX Gain 41.7 dBi at 6.18 GHz

48.45 dBi at 14.25 GHz

1.6.2. C-BAND FEED, FILTER and LNC ASSEMBLYType Prime focusTransmit frequency 5.9-6.4 GHz C BandReceive frequency 3.7-4.2 GHz C BandPolarization CircularVSWR: 1.3:1Polang control 24 volt DC motor for Linear Feed. None for Circular FeedLNB/LNC Gain & Noise Figure Refer to RF Equipment vendor manual(s)

1.6.3. Ku-BAND FEED, FILTER and LNC ASSEMBLYType Prime focusTransmit frequency 14.0-14.5 GHz Ku BandReceive frequency 10.95-12.75 GHz Ku BandPolarization LinearVSWR: 1.3:1Polang control 24 volt DC motor for Linear Feed. None for Circular FeedLNB/LNC Gain & Noise Figure Refer to RF Equipment vendor manual(s)

1.6.4. HIGH POWER AMPLIFIERSC-Band /40W Model Codan 40 watt SSPAKu-Band /8W Model Codan 8 watt SSPA

1.6.5. ODU RADIO PACKAGESC-Band ODU Codan C-Band ConverterKu-Band ODU Codan Ku-Band Converter


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1.6.6. STABILIZED ANTENNA PEDESTAL ASSEMBLYType: Three-axis (Level, Cross Level, Az)Stabilization: Torque Mode ServoStab Accuracy: 0.2 degrees MAX, 0.1 degrees RMS in presence of specified

ship motions.LV, CL, AZ motors: Size 35 Brushless DC Servo.Inertial Reference: Solid State Quartz Rate SensorsGravity Reference: Two Axis Fluid Tilt SensorAZ transducer: 256 line optical encoder / home switchRange of Motion:

Elevation -25 to +100 degreesCross Level +/- 30 degreesAzimuth Unlimited

Elevation Pointing: 7 to 70 deg with full 30 deg roll range, 7 to 85 deg with reduced15 deg roll range.

1.6.7. PEDESTAL CONTROL UNITSize 4 x 7 x 1.5 inchesConnectors

Antenna Pedestal 44 Pin D-Sub connectorInterface 15 Pin D-Sub connector

Controls NoneM&C Interface 9600 Baud RS-422

1.6.8. UNLIMITED AZIMUTH MULTIPLEXERS (4 Channel)Combined Signals 70 MHz TX IF, 70 MHz RX IF, 1.1/1.5 MHz FSK Pedestal M&C,

1.1/1.5 MHz FSK Radio M&C and L-band LNB output with TVROoption

Connectors:TX / RX IF SMA ConnectorRotary Joint SMA ConnectorTVRO option Type FDC / Ped M&C 9 pin D-Sub Connector

1.6.9. RADOME ASSEMBLYType Rigid domeMaterial Composite foam/fiberglassSize 144" Dia x 142" HighHatch size 18" x 34"

Optional Side Door 18” wide x 36” highNumber of panels Twelve panels, one top cap & base panInstalled weight 1000 LBSRF attenuation 1.5 dB @ 6 GHz, dry

1.5 dB @ 14 GHz, dry


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1.6.10. ENVIRONMENTAL CONDITIONS ABOVE-DECKS EQUIPMENTTemperature: -30 degrees C to 55 degrees C.Humidity: Up to l00% @ 40 degrees C.Spray: Resistant to water penetration sprayed from any direction.Icing: Survive ice loads of 4.5 pounds per square foot. Degraded RF

performance will occur under icing conditions.Rain: Up to 4 inches per hour. Degraded RF performance may occur

when the radome surface is wet.Wind: Withstand relative average winds up to 100 MPH from any

direction.Vibration: Withstand externally imposed vibrations in two horizontal

directions and in the vertical direction, at sweep rates no greaterthan 0.2 octaves per minute having peak single amplitudes asfollows:

Frequency Range, Hz Peak Single Amplitude, Inch4 - 10 0.10010 - 15 0.03015 - 25 0.01625 - 33 0.009

Corrosion Parts are corrosion resistant or treated to endure effects of salt air and salt spray. The equipmentis specifically designed and manufactured for marine use.

Ship Motions:Roll: +/-25 degrees with 6-12 sec periodsPitch: +/-15 degrees with 6-12 sec periodsYaw: +/-8 degrees with 15 to 20 sec periodsTurning rate: Up to 12 deg/sec.Headway: Up to 50 knotsMounting height: Up to 150 feet.


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1.7. TECHNICAL DATA BELOW DECKS EQUIPMENTTechnical characteristics of each of the below decks equipment subsystems are listed below:

1.7.1. ANTENNA CONTROL UNITPlease Refer to the DAC-97 ACU I&O manual for complete details on the Antenna Control Unit.

1.7.2. SATELLITE MODEMPlease refer to the CFE Modem manuals.

1.7.3. SPECTRUM ANALYZER (Optional Equipment)Model Avcom PSA65-AFrequency Range 0 - 1000 MHzResolution BW 10 KHz to 1MHzReference Level 40 to +20 dBm

1.7.4. ENVIRONMENTAL CONDITIONS BELOW-DECKS EQUIPMENTTemperature: 0 to 40 degrees C.Humidity: 0 to 100% @ 40 degrees C.


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1.8. CABLES (Customer Furnished Equipment)

1.8.1. SIGNAL CABLES.Transmit IF LDF450 or LDF475 Heliax cableReceive IF LDF450 or LDF475 Heliax cable

1.8.2. CONTROL CABLENone All control signals are multiplexed onto the TX and RX IF cables

1.8.3. GPS INTERFACEType: Shielded Twisted PairNumber of wires 4Wire Gauge 24 AWG or larger

1.8.4. AC POWER CABLE ABOVE DECKSVoltage: 110 or 220 volts ACPedestal Power: 100 V/ARF Equipment Power: 1500 V/A

1.8.5. AC POWER CABLE MARINE AIR CONDITIONERVoltage: 220 volts ACBreaker Required 20 AmpFull Load Amperage: 5.4 Amps

1.8.6. AC POWER CABLE BELOW DECKSVoltage: 110 or 220 volts ACPower: 400 V/A

1.8.7. GYRO COMPASS INTERFACE CABLEType Shielded Multi-conductorNumber of wires 4 Conductors for Step-By-Step Gyro, 5 Conductors for SynchroWire Gauge: 18 AWGInsulation: 600 VAC

9797-32 C/Ku Band INSTALLATION

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2. INSTALLATIONThis section contains instructions for unpacking, final assembly and installation of the equipment. It is highlyrecommended that final assembly of the Model 9797 be performed by trained technicians.

2.1. ABOVE-DECKS EQUIPMENT GROUP

2.1.1. UNPACKING AND INSPECTIONExercise caution when unpacking the equipment. Carefully inspect the radome's panel surface forevidence of shipping damage. Inspect the pedestal assembly and reflector for signs of shipping damage.

2.1.2. RADOME SYSTEM ASSEMBLY (system shipped unassembled)Refer to the System Block diagram, Radome Assembly and Radome Base Frame Assembly drawings foryour system. If your system is shipped with the radome assembled, skip to section 2.1.4.

1 Select a secure assembly site that provides enough area to work with the large radome panels.Place the radome base pan on temporary support blocks at least 20 inches high.

2 Assemble the radome base frame's four legs and eight braces using the hardware provided.Loosely assemble all legs and braces aligning all matching marks before tightening any of thebolts. Insure that a split washer is used under each nut.

NOTE: Unless otherwise indicated, all nuts and bolts should be assembled with Locktite 271 orits equivalent.

3 Fasten the antenna support stand to the radome base with the four 3/8-16 x 1-1/2 inch bolts,3/8” flat washers and hex nuts provided. Place the base stand, complete with stabilizedplatform, on the antenna support stand and secure using 3/8-16 x 1-1/2 inch bolts, 3/8” flatwashers and hex nuts provided.

4 Position the reflector assembly over the four antenna mounting supports (the reflector andsupports are numbered or color coded, make sure they match). Insert the four 3/8-16 x 7/8 inchbolts and 3/8” flat washers provided and secure the antenna to the support struts.

5 Install the RF equipment on the elevation beams. Attach the 15 pin connector on the antennareflector harness to the shielded Polang Aux Relay box. Connect the TXIF & RXIF cables, RFTransmit and Receive waveguide sections from the appropriate feed (C-Band or Ku-Band) tothe appropriate SSPA and Radio package (C-Band Pair or Ku-Band pair) according to the blockdiagram.

6 Refer to the radome assembly drawing. Observe the painted numbers on the radome panelsthat clearly identify their positions respective to each other and the base pan assembly.

7 Loosely assemble all panels using the hardware provided. Do NOT tighten the bolts at this time.After the radome is fully assembled, open each seam wide enough to install a good bead ofsilicone caulk, then firmly tighten all the bolts.

8 Check that the top cap fits and then put a large bead of silicone caulk all the way around it.Install the cap and firmly tighten the bolts. Proceed to step 2.1.4.

INSTALLATION 9797-32 C/Ku Band

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9 In some cases it may be more convenient to partially assemble the radome panels (i.e. lowerhalf of 12 part dome or 5 panels of 6 panel dome) then install the antenna pedestal and dish.This allows more room to work inside the radome and less chance of damaging the antenna ordripping silicone sealant on the equipment.

2.1.3. RADOME SYSTEM ASSEMBLY (System shipped assembled)1 Remove the shipping hold-down bolts.

2 Using a fork lift truck with 84 inch long forks or using the four-part lifting sling provided, lift theradome assembly free of its shipping pallet. Place the radome assembly on temporary supportblocks at least 20 inches high.

WARNING Hoisting with other than a webbed four-part sling may result in catastrophic crushinginto the fiberglass side panels of the radome.

3 Assemble the radome base frame's four legs and eight braces using the hardware provided.Loosely assemble all legs and braces aligning all matching marks before tightening any of thebolts. Insure that a split washer is used under each nut.

NOTE: Unless otherwise indicated, all nuts and bolts should be assembled with Locktite 271 orits equivalent.

4 Install the RF equipment on the elevation beams. Attach the 15 pin connector on the antennareflector harness to the shielded Polang Aux Relay box. Connect the RF Transmit waveguideand Receive cable from the feed to the TWTA and Radio package according to the blockdiagram.

2.1.4. SITE SELECTION ABOARD SHIPThe radome assembly should be installed at a location aboard ship where:

1 The antenna has a clear line-of-sight to as much of the sky (horizon to zenith at all bearings) asis practical.

2 Direct radiation into the antenna from ship's radar, and especially high power surveillance radararrays is minimized.

3 High power short wave transmitting antennas are not in close proximity

4 The Above Decks Equipment (ADE) and the Below Decks Equipment (BDE) should bepositioned as close to one another as possible. This is necessary to reduce the lossesassociated with long cable runs.

These conditions of course, cannot be entirely satisfied, and site selection must inevitably be acompromise between the various considerations.

2.1.5. RADOME INSTALLATION ABOARD SHIP1 Check that the antenna is restrained before hoisting. Check that all nuts on the base frame

assembly are tightened according the torque values listed below:

Bolt Size Torque, Inch Pounds

1/4-20 75

5/l6-l8 132

7/16-14 376

1/2-13 517


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2 Using the four-part lifting sling provided, and with a tag line attached to the radome base frame,hoist the antenna assembly to its assigned location aboard ship by means of a suitably-sizedcrane or derrick.

WARNING Hoisting with other than a webbed four-part sling may result in catastrophic crushinginto the fiberglass side panels of the radome.

CAUTION The radome assembly is very light for its size and is subject to large swaying motions ifhoisted under windy conditions. Use of manned tag-lines is recommended.

3 The radome assembly should be positioned with the BOW marker aligned as close as possibleto the ship centerline. Any variation from actual alignment can be compensated with theAZIMUTH TRIM adjustment in the DAC-97 so precise alignment is not required.

4 Weld the four legs of the radome base frame directly to the ship's deck. If the deck is uneven ornot level, weld clips to the deck and attach them to the legs of the radome base frame. Whencompleted the radome base must be level.

2.1.6. COOLING UNIT ASSEMBLYIf cooling unit is supplied, refer to the drawings provided for detailed instructions on assembly andinstallation of the intake duct and exhaust diffusion pipes.

2.1.7. ANTENNA/PEDESTAL MECHANICAL CHECKLIST1 Remove the restraints from the antenna and check that the antenna moves freely in azimuth,

elevation, and cross level without hitting any flanges on the radome.

2 Check that the antenna assembly is balanced front to back, top to bottom and side to side byobserving that it remains stationary when positioned in any orientation. Refer to section 4.4 forcomplete information on balancing the antenna.

3 Check that all pedestal wiring and cabling is properly dressed and clamped in place.


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2.2. CABLE INSTALLATION

2.2.1. SHIPBOARD CABLE INSTALLATIONThe cables must be routed from the above-decks equipment group through the deck and through variousship spaces to the vicinity of the below-decks equipment group. When pulling the cables in place, avoidsharp bends, kinking, and the use of excessive force. After placement, seal the deck penetration glandand tie the cables securely in place.

CAUTION Rough handling, tight bending, kinking, crushing and other careless handling of thecables and their connectors can cause severe damage.

2.2.2. CABLE TERMINATION AT RADOMEThe TX and RX cables must be inserted through the cable strain reliefs at the base of the radome. ApplyRTV to the strain relief joints and tighten the compression fittings to make them watertight. Attach the N toSMA cable adapters supplied to the TX and RX cables from below decks. Connect the cables from theantenna pedestal to the adapters. See System Block Diagram in section V.

The cable from the GPS engine may be routed into the radome or directly to below decks depending onwhere the engine is mounted. When necessary route the GPS cable into the radome to the terminal stripand connect an additional cable routed to the below decks equipment where it can be connected to theTerminal Mounting Strip. Both the entry and exit cables must be inserted through strain reliefs at the baseof the radome. Apply RTV to the strain relief joints and tighten the compression fittings to make themwatertight.


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2.3. ANTENNA CONTROL UNIT INSTALLATIONThe DAC-97 ACU is installed in a standard 19-inch rack and is two rack units high. It includes a TerminalMounting Strip mounted on a one rack unit high plate at the back of the rack.

2.3.1. TERMINAL MOUNTING STRIP CONNECTIONS1 Connect the 25 pin ribbon cable from the Terminal Mounting Strip to J3 on the DAC-97.

2 Connect the 9pin ribbon cable or round NMEA cable from the Terminal Mounting Strip to J13 (ifexists) or J11 on the DAC-97.

2.3.2. CONTROL CABLE CONNECTIONSConnect the Serial Control Cable from the Base Multiplexer to J1 on the DAC-97.

2.3.3. NMEA GPS CABLE CONNECTIONSConnect the 2 NMEA wire pairs from the GPS antenna to TB 4 on the Terminal Mounting Strip as shownin drawing 112791.

2.3.4. SHIPS GYRO COMPASS CONNECTIONSConnect the cable from the ship's gyro compass repeater to TB1 or TB3 of the Terminal mounting strip.Use TB1 for a Step-By-Step gyro compass and match the connections to COM, A, B and C. Use TB3 fora Synchro gyro compass and match the connections to R1, R2, S1, S2 and S3.

2.3.5. IF CABLE CONNECTIONSAttach the N connectors on the TX and RX IF cables from above decks equipment to the Base Multiplexerlocated on a mounting plate on the rear of the rack. Attach two BNC to SMA cables from the BaseMultiplexer to the IDU radio package.

2.3.6. AGC TRACKING CONNECTIONSConnect the 70 MHz RX IF tap from the RF splitter to the 70 MHz receiver input on the back of the DAC-97. See Section 2 of the DAC-97 manual for further details.


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2.4. FUNCTIONAL CHECKSThe following procedures provide instructions for performing a pre-operation check out of the system.

2.4.1. ANTENNA PEDESTAL1 Turn AC power OFF and check that the antenna moves freely in azimuth, elevation, and cross

level through the full range of motion without binding or hitting any flanges on the radome.

2 Check that the antenna assembly is balanced front to back, top to bottom and side to side byobserving that it remains stationary when positioned in any orientation. Refer to section 4.4 forcomplete information on balancing the antenna.

3 Turn AC power ON at the power supply and observe the initialization sequence: The levelplatform drives to the CW stop and back 45 degrees; The antenna drives forward or back tolevel; The antenna drives left or right to level; The antenna drives CW in azimuth to find thehome switch. Refer to section 4.6 for complete information on pedestal initialization.

2.4.2. ANTENNA CONTROL UNIT1 Turn on the main power switch at the rear panel.

2 Press RESET on the ACU front panel to initialize the system. Verify the display shows "SEATEL INC - MASTER" and the ACU software version number. After 6 seconds the display willchange to "SEA TEL INC -REMOTE INITIALIZING". After one minute the display will show thePCU software version number. If the system shows "REMOTE NOT RESPONDING" Refer toAppendix B in the DAC-97 manual.

3 Press the SHIP key 4 times to select the HEADING entry display. Enter the correct shipsheading on the numeric entry pad. Press ENTER to save this data. Observe that the headingdisplay changes in the correct direction as the ship turns. If the heading display changesincorrectly or the red ERROR LED illuminates on the front panel, refer to Appendix A in theDAC-97 manual.

2.4.3. RADIO M&CTurn Power on to the Radio M&C Console. Verify the Console is communicating with the remote radiopackage.


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2.5. Changing C/Ku Band Configuration of the AntennaTo change the band of operation of your system you will have to switch RF Equipment, cable connections,waveguide connections, drop-in feed assemblies (re-aligning the feed assembly) and re-balance the antenna.

Follow the step below to convert your system from one band to the other:

1 Secure Power, tie down antennawith stow braces or web straps tohold it at elevation 90, while youchange the RF Equipment. Youmay need to bring a small ladderinto the radome to be able to reachthe feed and waveguide assemblies.

2 Exchange Power Supply, RadioTransceiver and HPA (SSPA orTWTA) components to those usedfor the desired band. This may alsorequire that the mounting bracketsbe exchanged for some of theequipment.

3 Re-connect the power, TXIF, RXIF,M&C and other interconnectingcables to the RF Equipment.

4 Exchange the rigid waveguidesection mounted from the rear,around the edge to the front of thedish (from the HPA to the feed).


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5 Tie down antenna with stow bracesor web straps at an elevation of 0 tochange the Modular Drop-in FeedAssembly. Exchange the FeedAssembly as desired (C-BandCircular, C-Band Linear or Ku-BandLinear).

6 Connect harness and coaxconnections to the feed.

7 Exchange and connect flexiblewaveguide section(s) as required.

8 Remove the tie down stow braces orweb straps. Re-balance theantenna.

9 Rotate the Modular Drop-in FeedAssembly unitl the POLANG STOPis Bottom Dead Center.

10 Engage POLANG MOTOR drivegear and tighten the motorsmounting screws.

11 Rotate the gear on the POLANGPOT until it is in the center of itsrange of rotation.

12 Engage POLANG POT driven gearand tighten the pots mountingscrews.


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13 Target and re-acquire desiredsatellite.

14 If a CIRCULAR polarized feed isinstalled skip to step 20.

15 If a LINEAR polarized feed isinstalled:

16 Set POL TYPE parameter to 9 (formanual polarization mode).Manually adjust polarization toobtain highest receive signal andAGC.

17 If MANUAL Polarization will beused, skip to step 20.

18 Set POL TYPE parameter to 72 (forAUTO polarization mode).

19 Select POL OFFSET parameter toalign cross-pol isolation with thenetwork operation center. While inPOL OFFSET, use the UP orDOWN arrow keys to optimizepolarization as dictated by thenetwork operation center.

20 Save the parameter changes asnecessary.

21 Test tracking in each of the 4quadrants (UP, DOWN, LEFT &RIGHT of peak signal AZ/ELpointing) to assure that Trackingdrives the dish back to peak satellitesignal level.

- Manually mis-point the antenna in one quadrant AND;

- Verify proper signaling (Conscan only) AND;

- Verify that the antenna returns to peak signal levelwhen Tracking is turned ON

- Repeat in the other quadrants until all four have beentested.

22 Return to normal operation.


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9797-32 C/Ku Band Operation

3-1

3. OperationOperation of your system is accomplished from the DAC-97 Antenna Control Unit (ACU). There is no Operation ofthe Radome or Antenna Pedestal, other than from the ACU. Refer to the Basic System Information section of thismanual to learn more about your system. The DAC-97 Display will initially show “SEA TEL INC” and the ACUsoftware version (ie DAC-97 VER 1.11d ). The display will switch to “REMOTE INITIALIZING” until the PedestalControl Unit (PCU) completes initialization of the antenna pedestal. When initialization is completed the PCU willreport its Model & Software version (ie 9797 VER 2.22 ).

3.1. Quick Start OperationIf your system has been set up correctly, is using factory default parameters and the ship has not movedsince the system was used last … Quick start operation of the system from a cold start involves the followingsteps.

5 Turn on the AC power switches for the Antenna Pedestal, Antenna Control Unit (ACU) and otherBelow Decks Equipment.

6 Press SHIP to check the Latitude, Longitude and Heading values. Latitude and Longitude should stillbe correct, but may be updated if necessary. Heading in most cases will be 000.0 and you will haveto enter the initial value of the ships current heading. Press SHIP 3 more times to select ship'sheading (HDG) entry mode. Use the NUMBER keys to enter the current ships heading and pressENTER. Entry of ships heading is not required when your system is connected to a 1:1 Synchro orNMEA 0183 Heading Gyro Compass output.

7 You may wish to press SAT to view (or change) the Satellite longitude and the tracking receiver tuninginformation OR press ANTENNA to monitor the antenna position information during normaloperation.

When Initialization is completed the ACU will automatically target the satellite (SAT), the Search LED willflash while the antenna is moving to the targeted AZ & EL position, then;

A. If no signal is found: The Tracking LED will flash for a short period of time (SEARCH DELAY)followed by the Search LED coming ON. The ACU will automatically set the tracking threshold and movethe antenna in a spiral SEARCH pattern. The search movement will stop when the ACU receives a signal(AGC) value that is greater than the threshold value. Tracking will take over (Tracking LED ON) andautomatically peak the antenna position for highest receive signal level from the satellite which has beenacquired.

B. If a satellite signal is found: The ACU will be receiving a signal (AGC) value that is greater than thethreshold value. Tracking will take over (Tracking LED ON) and automatically peak the antenna positionfor highest receive signal level from the satellite which has been acquired.

Upon completion of the above, the system will continue to operate automatically indefinitely or until: ACpower to the system is interrupted OR The satellite signal is blocked OR The ship sails into an area ofinsufficient satellite signal level.

Operation 9797-32 C/Ku Band

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3.2. Front Panel Layout

3.3. Basic Keyboard EntryKeyboard operation is very simple and straightforward. Pressing any of the 4 main menu function keyslocated below the display, enables the display of all the information associated with that function. Pressingthe same function key again, or pressing the ENTER key, enables the first display/entry sub-menu.Subsequent depressions the same function key, or the ENTER key, cycle through the other display/entry sub-menus. A selected display can be overwritten by pressing the desired NUMBER keys or it can beincremented and decremented with the UP/DOWN arrow keys. Pressing the DECIMAL POINT allowsfractional entries to be made. Pressing C clears the display to correct errors. When satisfied with the entry,press ENTER again to set you input and proceed to the next function.

3.4. Basic description of front panel keys and their functionsThe basic functions of the front panel keys, display and LEDs are:

DISPLAY - 20 character x 2-line display of all menu display, entry, control and status windows.

AUX1 - Toggles Tracking ON/OFF, regardless of which displayed menu location you are currently in.

AUX2 - No current operator function.

Main Menu Display & Entry Keys:

SHIP - Accesses the SHIP menus to display, enter or edit current Ships’ Latitude, Longitude andgyro compass Heading information.

SAT - Accesses the SAT menus to display, enter or edit current Satellite Longitude, Threshold,Tracking Receiver input selection & tuning frequency and current signal level being received(AGC).

ANTENNA - Accesses the ANTENNA menus to display, enter or edit current Azimuth, Elevation& Relative antenna position and Polarization setting. Current signal level being received (AGC)and Conscan tracking signals are also displayed in some of the sub-menu screens.

MODE - Accesses control of Tracking band & ON/OFF selection, Searching ON/OFF selection,Error status and Remote Auxiliary value.

NUMERIC KEY PAD - Used to key in numeric values in all entry menus.

NUMBERS - Key in numeric value of desired entry. May be used in conjunction with theDecimal Point.

DECIMAL POINT - Used with the Numbers to enter whole and tenths of degrees or MHz & KHzto enter tuning frequency.

C Key - Clear an incorrect numeric entry.


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Special Keys -

UP Arrow - Steps the selected entry UP one increment per sequential key-press or rapidlyincrements the selected entry when pressed & held. Affects all Numeric entries and is used totoggle Tracking ON/OFF, turn Searching ON or to clear the Error display.

DOWN Arrow - Steps the selected entry DOWN one increment per sequential key-press orrapidly increments the selected entry when pressed & held. Affects all Numeric entries and isused to toggle Tracking Band selection, turn Searching OFF or to clear the Error display.

N/S/E/W - Toggles North/South Latitude entry, East/West Longitude entry, Tracking ReceiverInput selection and Polarization mode (depends on POL TYPE parameter setting). When inMODE menus the N/S/E/W key steps the display back UP to the previous sub-menu.

ENTER - Enters the value that has been keyed in.

Status LEDs

TRACKING - (Green LED)

ON indicates that the ACU is Tracking a satellite signal whose AGC value is greater thanthe Threshold value. The ACU is actively issuing small azimuth & elevation positionadjustments to the antenna to optimize the signal level (AGC). If the system wasSearching, SEARCH will go OFF when TRACKING turns ON.

Blinking indicates that the satellite signal AGC value is less than the Threshold value andthe ACU is counting down “SEARCH DELAY” (seconds). If the AGC does not rise abovethe Threshold before the count-down is completed, the ACU will automatically start aSEARCH to acquire a signal that is greater than Threshold. When SEARCH is ON,TRACKING will be OFF.

OFF indicates that Tracking is OFF. This may be due to the operator turning TrackingOFF intentionally or that Tracking was pre-empted by SEARCH.

SEARCHING - (Green LED)

ON indicates that the ACU is Searching for a satellite signal whose AGC value is greaterthan the Threshold value. When a satellite signal is found SEARCH will go OFF andTRACKING will come ON. If an adequate satellite signal is not found during the Search,SEARCH will blink as the antenna re-targets to the desired satellite. If an adequatesatellite signal is still not found, then TRACKING will begin flashing (count-down) until thenext SEARCH is automatically started.

Blinking indicates that the antenna is TARGETING to the calculated Azimuth & Elevationpositions of the desired satellite (SAT). When the antenna arrives at the calculatedposition SEARCH will go OFF. If an adequate satellite signal is found at the targetedposition Tracking will commence. If an adequate satellite signal is not found at thetargeted position, TRACKING will begin blinking (see above) until the next SEARCH isautomatically started.

OFF indicates that SEARCH is OFF. This may be due to the operator turning SearchOFF intentionally or that Tracking has pre-empted SEARCH.

UNWRAP - (Red LED) Your system does not require UNWRAP, therefore, this LED shouldnever be ON.

ERROR - (Red LED)

ON indicates that one, or more, discrete system errors have occurred. Refer to MODEinformation menus below to determine which error(s) have occurred.

OFF indicates that no errors have occurred.

RESET - Resets the processors inside the ACU. This does NOT reset the antenna pedestal.


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3.5. Display & Entry Operation Menus

3.5.1. SHIP information menus.

Main Menu Sub Menu Display MeaningLAT 38 N LON 122 W

HDG 000.0Display of the current SHIP information.

LAT 38 N Latitude entry mode. Used to calculate Azimuth,Elevation and Polarization for the desired satelliteposition.Key in numeric latitude in decimal form. Tenths may beentered (and will be used internally) but the display willround off to nearest whole degree.Press N/S/E/W to toggle North/South hemisphere.Press ENTER to set the new latitude.Latitude updates automatically if GPS NMEA input isconnected to one of the Aux Serial Ports (J11 or J13)and operating normally.

LON 122 W Longitude entry mode. Used to calculate Azimuth,Elevation and Polarization for the desired satelliteposition.Key in numeric longitude in decimal form. Tenths maybe entered (and will be used internally) but the displaywill round off to nearest whole degree.Press N/S/E/W to toggle East/West hemisphere. PressENTER to set the new longitude.Longitude updates automatically if GPS NMEA input isconnected to one of the Aux Serial Ports (J11 or J13)and operating normally.

HDG 000.0 000.0Heading entry mode. Used to provide “True” Azimuthantenna position.If the GYRO TYPE parameter is NMEA0183 data or 1:1Synchro, you will not be able to set HDG to any othervalue than it receives from the Ships Gyro Compass.For all other acceptable Gyro Compass input types theHDG MUST be initially set whenever the ACU power isturned ON.Key in the heading value of the Ships Gyro Compassand press ENTER.HDG display may be a single value, or left and rightvalues depending on the GYRO TYPE parameter.During subsequent normal operation, the HDG valueshould automatically follow the Ships Gyro Compasscorrectly (HDG value should agree with the valueobserved on the Gyro Compass).


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3.5.2. SAT information menus.

Main Menu Sub Menu Display MeaningSAT 101 W THRS 1234

INA 1100 AGC 1234Display of the current SAT information.

SAT 101 W Satellite Longitude entry menu. Used to calculateantenna Elevation, Azimuth and Polarity pointing angles.Key in the numeric longitude of the satellite you want totarget (even if it is the same value as is presentlydisplayed), press N/S/E/W to toggle the E/Whemisphere as necessary and press ENTER.The ACU will then calculate the Elevation, Azimuth andPolarization that the antenna will be driven to, based onthe current SHIP information (LAT, LON & HDG) andissue those (AZ, EL & POL) targeting values to theantenna. Auto-Threshold will re-set as the antennatargets.

THRS 1234 Threshold entry mode. Default setup is AutomaticThreshold, which sets the Threshold value to 128 countsof AGC above the average AGC value whenever theACU Searches or Targets.To manually set threshold, key in the desired numericvalue and press ENTER.

IF 70.450 AGC 1234RCVR entry mode. Tracking Receiver Input Selection& Tuning.Press N/S/E/W to toggle Input Selection (EXT, INA, INBor IF). External selection should no longer be used.IF should be selected for TXRX systems using one ofthe SCPC Receivers (BNC connector on the rear panel).Key in the numeric value of whole MHz and pressENTER, then press Decimal Point followed by thenumeric value of KHz and press ENTER to set thefrequency you want to use for Tracking. Receivershould be tuned to the same frequency as the RXIFvalue of your Satellite Modem or to a Beacon frequency.[Do NOT tune to your TXIF frequency].Current signal level (AGC) of the selection & frequencywill be displayed.


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3.5.3. ANTENNA information menus.

Main Menu Sub Menu Display MeaningAZ 123.4 EL 056.7

REL 234.5 AGC 1234Display of the current ANTENNA information.REL is a diagnostic display of the antenna positionrelative to the bow of the ship, ranging from 0-359.9,with 000.0 indicating when antenna is pointed in-line withthe bow.The REL position of the antenna is used to set RadiationHazard & Blockage Mapping points (AZ LIMIT 1 and AZLIMIT 2).

AZ 123.4

# AGC 1234Azimuth position/entry mode. True Azimuth positionof the antenna. Display is the sum of ships heading(HDG) and antenna relative (REL) position reduced to 0-359.9 degrees. To manually drive the antenna inazimuth (assure Tracking is OFF):Sequentially press the UP or DOWN arrow key to stepthe antenna up or down in small individual increments.OR,Press & Hold the UP or DOWN arrow key to slew theantenna up or down in rapid increments. OR,Key in the desired numeric value of azimuth you want totarget the antenna to and press ENTER.Conscan tracking signals ( # ) will appear in the lowerleft of the display. Periodic 2, 4, 6 or 8 are normalConscan tracking signals.Current IF signal level (AGC) is displayed to assist youin manually peaking AZ for best signal level.

EL 056.7

# AGC 1234Elevation position/entry mode. Current Elevationangle of the antenna (0-90.0). To manually drive theantenna in elevation (assure Tracking is OFF):Sequentially press the UP or DOWN arrow key to stepthe antenna up or down in small individual increments.OR,Press & Hold the UP or DOWN arrow key to slew theantenna up or down in rapid increments. OR,Key in the desired numeric value of elevation you wantto target the antenna to and press ENTER.Conscan tracking signals ( # )will appear in the lower leftof the display. Periodic 2, 4, 6 or 8 are normal Conscantracking signals.Current IF signal level (AGC) is displayed to assist youin manually peaking EL for best signal level.


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POL 0000 AGC 1234Polarization entry menu. Allows polarizationadjustment if Auto-Polarization (DEFAULT) is not beingused.POL Display may be a numeric value representing thecurrent polarization angle (polang) position or ALPHAdisplay of HORZ, LHCP, VERT, RHCP polarizationmode.In manual polarization mode the N/S/E/W key (selectsHORZ, LHCP, VERT or RHCP) OR the UP/DOWNarrow keys (adjust polarization angle clockwise orcounter- clockwise for fine-tuning) depending upon thePOL TYPE parameter setting.Current IF signal level (AGC) is displayed to assist youin manually peaking POL for best signal level.


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3.5.4. MODE Control & Status menus.

Main Menu Sub Menu Display MeaningCONTROL

TRACKING Ku OFFControl – Tracking menu.Use the AUX1 or UP arrow key to turn TrackingON/OFF.Use the DOWN arrow key (twice within 3 seconds) totoggle BAND (Ku or C/X).If AZ Limits have been set to mask a blockage zone“BLOCKED” will appear at the end of the second linewhen the antenna is in the described blockage zone.

CONTROL

SEARCH 2 OFFControl – Searching menu.Use the UP arrow key to cause a manual SEARCH tobegin (SEARCH 2 ON).Use the DOWN arrow key to stop a search (SEARCH 2OFF).

STATUS

ERROR LLLL RRRRStatus – Error menu.LLLL - Comms Error Count - indicates the numberof times that a Pedestal M&C communication message(between the ACU and PCU) was not received correctly.Occasional counts are normal but more than 10 perminute indicates a problem that needs attention (refer toTroubleshooting section).RRRR - Error Code - indicates the SUM of thediscrete error(s) that have occurred. It does not indicatehow many of a particular error have occurred (ERROR0007 = 4 + 2 + 1, NOT 7 ones). Refer to the “To ViewErrors” paragraph below for a complete list of thediscrete errors which could occur.Pressing UP arrow key clears error count, status codeand extinguishes the Error LED.

STATUS

REMOTE AUX 0000Status – Remote Aux menu. Diagnostic display ofRemote auxiliary read, typically used to indicateTemperature or EIRP readings from the antenna.Continuing to press MODE will not advance the displayuntil the correct password is entered to allowing entryinto the SETUP Parameter menus.

3.5.5. SETUP Parameter display and entry menus.Access to the password protected system setup parameters is only required after installation or repairs ofyour antenna system. These parameters should only be changed by an authorized service technician.

CAUTION: Improper setting of these parameters will cause your system to not to perform properly.

Refer to the SETUP information in the Installation section of this manual.


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3.6. Operation ScenariosBelow are some of the common tasks an operator would perform. Each scenario includes in a sequence ofkeys you should press, some information about what should (or might) happen and what indication(s) youshould see.

3.6.1. To Toggle Tracking ON/OFFWhat button(s) do I push?

Press AUX1

System Action/What happens?

When Tracking is ON, the antenna will automatically step toward higher level of received satellitesignal and the AGC will increase accordingly until it is at its peak value. If the antenna was not ona satellite when you turn Tracking on (AGC value was less than the Threshold value) the TrackingLED will flash for some (SEARCH DELAY) number of seconds and then initiate a SEARCH to finda satellite signal that is greater than Threshold. If the antenna was on a satellite signal when youturn Tracking OFF, the antenna should stay pointed near peak signal but may not stay at peak.

What do I see?

Tracking LED will be ON (or flashing) when Tracking is ON and the AGC should increase until it isat its peak value. Tracking LED will be extinguished when Tracking is OFF and AGC may notstay at its peak value.

3.6.2. To View SHIP InformationWhat button(s) do I push?

From any of the other main display/entry menus, Press SHIP and view the overall display.

If already in one of the SHIP sub-menus, continue pressing SHIP until the current SHIPinformation overall display is in view.


The SHIP information will be accessed from memory in the ACU and displayed as the key ispressed.

What do I see?

The SHIP information display containing the current Latitude, Longitude and Heading.


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3.6.3. Entering Ships’ Latitude (LAT)What button(s) do I push?

From any of the other main display/entry menus, press SHIP 2 times, use the Number keys toenter the decimal value of the ships current Latitude (##.#), press N/S/E/W to toggle North orSouth hemisphere as needed and then press ENTER.

If already in one of the SHIP sub-menus, continue pressing SHIP until the Latitude entry menu isreached, use the Number keys to enter the decimal value of the ships current Latitude (##.#),press N/S/E/W to toggle North or South hemisphere as needed and then press ENTER.


The LAT information will be accessed from memory in the ACU and displayed as the SHIP key ispressed. When you enter a new value and hit the ENTER key, the new information will overwritethe previous value in memory. If GPS input is connected, the next input update will overwrite LATvalue in memory. New values will be displayed as they occur.

What do I see?

The Latitude entry mode sub-menu display containing the current Latitude of the ship. Newinformation will be displayed as you enter it.

If GPS input is connected, the next input update will overwrite the LAT value in memory and bedisplayed.

TIP: This is a good way to assure that the GPS is updating the ACU properly. Press the 0 Key,then press ENTER. The display will initially show LAT 00 and then automatically return to theprevious value when the next GPS update is received (most GPS units update about once persecond).

3.6.4. Entering Ships’ Longitude (LON)What button(s) do I push?

From any of the other main display/entry menus, press SHIP 3 times, use the Number keys toenter the decimal value of the ships current Longitude (###.#), press N/S/E/W to toggle North orSouth hemisphere as needed and then press ENTER.

If already in one of the SHIP sub-menus, continue pressing SHIP until the Longitude entry menu isreached, use the Number keys to enter the decimal value of the ships current Longitude (###.#),press N/S/E/W to toggle North or South hemisphere as needed and then press ENTER.


The LON information will be accessed from memory in the ACU and displayed as the SHIP key ispressed. When you enter a new value and hit the ENTER key, the new information will overwritethe previous value in memory. If GPS input is connected, the next input update will overwrite LONvalue in memory. New values will be displayed as they occur.

What do I see?

The Longitude entry mode sub-menu display containing the current Latitude of the ship. Newinformation will be displayed as you enter it.

If GPS input is connected, the next input update will overwrite the LAT value in memory and bedisplayed.

TIP: This is a good way to assure that the GPS is updating the ACU properly. Press the 0 Key,then press ENTER. The display will initially show LAT 00 and then automatically return to theprevious value when the next GPS update is received (most GPS units update about once persecond).


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3.6.5. Entering Ships’ Heading (HDG)If the GYRO TYPE parameter is set to 1:1 SYNCHRO or NMEAH you will not be able to change the HDGentry because the absolute heading value is being read directly from the Gyro Compass input.

What button(s) do I push?

From any of the other main display/entry menus, press SHIP 4 times, use the Number keys toenter the decimal value of the ships current gyro compass heading (###.#) and then pressENTER.

If already in one of the SHIP sub-menus, continue pressing SHIP until the Heading entry menu isreached, use the Number keys to enter the decimal value of the ships current gyro compassheading (###.#) and then press ENTER.


The HDG information will be accessed from memory in the ACU and displayed as the SHIP key ispressed. When you enter a new value and hit the ENTER key, the new information will overwritethe previous value in memory. If Ships Gyro input is connected, the next input update willoverwrite HDG value in memory. New values will be displayed as they occur.

What do I see?

The Heading entry mode sub-menu display containing the current Heading of the ship. Newinformation will be displayed as you enter it.

If Gyro Compass input is connected, the next input update will overwrite the HDG value inmemory and be displayed.

3.6.6. To View SATELLITE InformationWhat button(s) do I push?

From any of the other main display/entry menus, Press SAT and view the overall display.

If already in one of the SAT sub-menus, continue pressing SAT until the current SAT informationoverall display is in view.


The SAT information will be accessed from memory in the ACU and displayed as the key ispressed.

What do I see?

The SAT information display containing the current Satellite Longitude, Threshold value, TrackingReceiver selection & frequency and the current level of AGC.


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3.6.7. Targeting A Satellite (SAT)What button(s) do I push?

From any of the other main display/entry menus, press SAT 2 times, use the Number keys toenter the decimal value of the desired Satellite Longitude [even if it is currently displayed], pressN/S/E/W to toggle East or West hemisphere as needed and then press ENTER.

If already in one of the SAT sub-menus, continue pressing SAT until the SAT entry menu isreached, use the Number keys to enter the decimal value of the desired Satellite Longitude [evenif it is currently displayed], press N/S/E/W to toggle East or West hemisphere as needed and thenpress ENTER.


The SAT information will be accessed from memory in the ACU and displayed as the SAT key ispressed. As you enter a new value, the new information will overwrite the previous value inmemory and be displayed.

When you press the ENTER key the ACU will evaluate whether the desired satellite will be belowthe horizon or not from the ships current position. If the desired satellite is below the horizon anERROR code 128 will be generated (Satellite out of range). If the desired satellite is not below thehorizon, the ACU will calculate the Elevation, Azimuth and Polarization angles for the desiredsatellite based on the SHIP Latitude LAT, Longitude (LON) and Heading (HDG) values inmemory. The Elevation, Azimuth and Polarization targeting commands will then be sent to thePedestal Control Unit (PCU) to drive the antenna to the calculated pointing angles.

What do I see?

The Satellite Longitude entry mode sub-menu display containing the current Satellite Longitude.New information will be displayed as you enter it.

If the Error LED comes ON (ERROR code 128), it will be because the requested satellite is belowthe horizon from the ships current position. Check SHIP and SAT information, correct anyincorrect information and re-target the satellite OR target another satellite which will not be belowthe horizon from your current location.

When the ENTER key is hit, the Searching LED will begin to flash (pre-empting Tracking) as theantenna targets/drives to the new position. When the antenna arrives at the targeted position theSearching LED will extinguish.

If the ACU was previously tracking a satellite, the Tracking LED will come ON (if the AGC value isgreater than the Threshold value) or will begin to flash (if the AGC value is less than the Thresholdvalue). If the Tracking LED begins flashing, it will flash for SEARCH DELAY number of secondsand an automatic Search will be initiated (Search LED ON) pre-empting Tracking until a signal isfound (AGC value greater than Threshold value).

If the ACU was NOT previously tracking a satellite, the Tracking LED will remain OFF and theantenna will remain pointed at the (new) targeted location.

3.6.8. Setting Threshold (manually)To properly set Threshold you will need to find out what AGC values you have “off satellite” and “peaksatellite”. You will then set Threshold to a value that is about +3 dB above the “off satellite” noise level ORto a level that is 1/3 to ½ of the difference between “peak” & “off satellite” AGC above the noise.

30-40 counts of AGC is approximately 1 dB of satellite signal. Therefore, 128 counts of AGC isapproximately 3-4 dB of satellite signal (this is the value Auto-Threshold uses to set Threshold for you).

The difference between “off satellite” and “peak satellite” AGC values is called AGC Delta. When you arein a weak area of the satellite footprint, this value may be small. In this case you may want to setthreshold to a 1/3rd to ½ of the AGC Delta above the off satellite noise value of AGC.



3-13

Press ANTENNA 3 times to select Elevation entry mode. Record your “peak satellite” AGCvalue while Tracking the satellite. Press AUX1 to turn Tracking OFF. Step Elevation UP until youare well off satellite and record the “off satellite” AGC value. Step Elevation back DOWN to returnto “peak satellite” Elevation position and press AUX1 to turn Tracking back ON. Subtract the “offsatellite” AGC value from the “peak satellite” AGC value to determine your AGC Delta.

If your AGC Delta is greater than 250 counts, simply add 128 to the “off satellite” value ofAGC and enter the sum as the Threshold value. Example: Peak (1600) - Noise (1000) =AGC Delta (600). Set Threshold to 1000 + 128 = 1128.

If your AGC Delta is less than 250 counts, set Threshold to “off satellite” plus 1/3 to ½ ofyour AGC Delta. Example: Peak (1240) - Noise (1000) = AGC Delta (240). SetThreshold to 1000 + 80 = 1080 OR Set Threshold to 1000 + 120 = 1120.

Press SAT 3 times to select Threshold entry mode, use the Number keys to enter the calculatedThreshold value and press ENTER.

Note: If Auto-Threshold is not turned OFF the Threshold will be automatically re-set the next timethe system Targets or Searches.


The THRES information will be accessed from memory in the ACU and displayed as the SAT keyis pressed. When the ENTER key is hit the new value will overwrite the previous value in memoryand be displayed.

What do I see?

In the first step you will see the Elevation entry mode display containing the current Elevationposition of the antenna, Conscan tracking signals and the current level of AGC. When you pressAUX1 the Tracking LED will go OFF. As you step UP the Elevation position will increase,Conscan will initially flash 2’s as you go off peak but will become random when you are off satelliteand AGC will decrease from peak value to “off satellite” value. As you step back DOWN theElevation position will decrease, Conscan will initially be random but will flash 8’s when you getback on satellite until you get back to peak and AGC will increase from “off satellite” value to peakvalue. When you press AUX1 the Tracking LED will go ON.

In the second step you will see the Threshold entry mode display containing the current Thresholdand the current level of AGC. The Threshold value will change as you key in the new value.

Note: If Auto-Threshold is not turned OFF the Threshold will be automatically re-set the next timethe system Targets or Searches.

3.6.9. Selecting Tracking Receiver SourceWhat button(s) do I push?

Press SAT 4 times to view the RCVR selection & frequency entry mode display, then pressN/S/E/W repeatedly to select EXT, INA, INB or IF.

If already in one of the SAT sub-menus, continue pressing SAT until the RCVR entry menu isreached, press N/S/E/W repeatedly to select EXT, INA, INB or IF

EXT input electrically comes from an external source wired to the Terminal Mounting Strip “AGCterminal.

INA input electrically comes from the top F connector input (RF Input A) on the rear panel of theACU.

INB input electrically comes from the bottom F connector input (RF Input B) on the rear panel ofthe ACU.

IF input electrically comes from the BNC connector input (RF Input) on the rear panel of the ACU.


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Once desired selection is displayed, press ENTER.

Refer to the next scenario to change the tuning frequency.


The RCVR information will be accessed from memory in the ACU and displayed as the SAT keyis pressed. As you press the N/S/E/W key the ACU is internally selecting where the AGC signalinput is coming from and the selection is being displayed followed by the actual value of AGCcoming from that source. When the ENTER key is hit the new selection will overwrite theprevious value in memory and be displayed.

What do I see?

The RCVR Selection & Frequency entry display information will be accessed from memory in theACU and displayed. As you sequentially press the N/S/E/W key the RCVR display will show EXT,INA, INB or IF followed by a 4 digit value of AGC which currently being received from that inputsource. When the ENTER key is hit the new selection will overwrite the previous value in memoryand be displayed.

Also refer to the next scenario to change the frequency that the input source is being tuned to.

3.6.10. Tuning The TXRX Tracking ReceiverIF Tuning - The Narrow Band IF or SCPC receiver is tuned to MHz and kHz by two entries. Select theSAT/RCVR mode by pressing the SAT key. Select the IF input using the NS/EW key. Key in the MHzportion and press ENTER. Press "." then key in the kHz portion and press ENTER.


Press SAT 4 times to view the RCVR selection & frequency entry mode display, the Selection,tuning frequency and the corresponding AGC will be displayed. Use the Number keys to enter thevalue of MHz you wish to tune the receiver to and hit ENTER. If you wish to fine-tune the MHzentry you can use the UP/DOWN arrow keys to increment/decrement the value one MHz per key-press to get the highest value of AGC and hit ENTER. If you wish to additionally fine-tune thereceiver to some kHz value, hit the DECIMAL key, enter the number of kHz and hit ENTER.

If already in one of the SAT sub-menus, continue pressing SAT until the RCVR entry menu isreached, the Selection, tuning frequency and the corresponding AGC will be displayed. Use theNumber keys to enter the value of MHz you wish to tune the receiver to and hit ENTER. If youwish to fine-tune the MHz entry you can use the UP/DOWN arrow keys to increment/decrementthe value one MHz per key-press to get the highest value of AGC and hit ENTER. If you wish toadditionally fine-tune the receiver to some kHz value, hit the DECIMAL key, enter the number ofkHz and hit ENTER.


The receiver source will be tuned to an Intermediate Frequency (IF) corresponding to the valueyou entered and the AGC value actually coming from the selected source (at that frequency) willbe displayed. When you hit ENTER the input selection and frequency values in memory will beoverwritten with the new values.

What do I see?

The RCVR selection followed by the frequency (in MHz & kHz) it is tuned to and the AGC valueactually coming from the selected source (at that frequency) will be displayed. New frequencyinput and the corresponding AGC will be displayed as changes are made.


3-15

3.6.11. To View ANTENNA InformationWhat button(s) do I push?

From any of the other main display/entry menus, Press ANTENNA and view the overall display.

If already in one of the ANTENNA sub-menus, continue pressing ANTENNA until the currentANTENNA information overall display is in view.


The ANTENNA information will be accessed from memory in the ACU and displayed as the key ispressed.

What do I see?

The ANTENNA information display containing the current (True) Azimuth, Elevation and Relativeposition of the antenna and the current level of AGC.

3.6.12. Adjusting Azimuth (step, slew & target)What button(s) do I push?

From any of the other main display/entry menus, Press ANTENNA 2 times and view the Azimuthentry mode display.

If already in one of the ANTENNA sub-menus, continue pressing ANTENNA until the currentAzimuth entry mode display is in view.


The current (True) Azimuth position of the antenna, Conscan signals and the current level of AGCwill be displayed.

What do I see?

The Azimuth entry mode sub-menu display containing the current (True) Azimuth position of theantenna, Conscan tracking signals and the current level of AGC.

The Azimuth position (upper left of the display) will change as you step, slew or target theantenna.

Conscan AZ tracking signals (lower left of the display) will be 4 (indicating AZ needs to moveDOWN) or 6 (indicating AZ needs to move UP). When the Azimuth position of the antenna isoptimum the received signal level for the satellite will be peaked (highest AGC) and the number ofConscan signals will be minimal. As you step (or slew) the Azimuth position of the antenna offpeak in one direction Conscan will signal a need to move to opposite direction. As you step (orslew) the Azimuth further off peak in that direction the Conscan signal will flash more rapidly.When you turn Tracking back ON, the Azimuth should move back toward peak, Conscan signalswill become less rapid and AGC will increase back to maximum. [Example: As you step theantenna UP in AZ, a 4 will flash in the lower left of the display. As you continue to step UP in AZ,the 4 will flash more rapidly. When you turn Tracking ON, AZ will move back DOWN, the 4 willflash more slowly and AGC will increase. When the antenna has returned to peak signal position,Conscan signals will nearly cease (random 2, 4, 6 or 8) and AGC will be at its maximum value.]

AGC value will vary, representing the actual received signal level coming from the dish (to theTracking RCVR), pointed at its’ current Azimuth position. The AGC value will be minimum whenthe antenna is pointed off satellite and will be maximum when the antenna is pointed at peaksatellite signal.


3-16

3.6.13. Adjusting Elevation (step, slew & target)What button(s) do I push?

From any of the other main display/entry menus, Press ANTENNA 3 times and view theElevation entry mode display.

If already in one of the ANTENNA sub-menus, continue pressing ANTENNA until the currentElevation entry mode display is in view.


The current Elevation position of the antenna, Conscan signals and the current level of AGC willbe displayed.

What do I see?

The Elevation entry mode sub-menu display containing the current Elevation position of theantenna, Conscan tracking signals and the current level of AGC.

The Elevation position (upper right of the display) will change as you step, slew or target theantenna.

Conscan EL tracking signals (lower left of the display) will be 2 (indicating EL needs to moveDOWN) or 8 (indicating EL needs to move UP). When the Elevation position of the antenna isoptimum the received signal level for the satellite will be peaked (highest AGC) and the number ofConscan signals will be minimal. As you step (or slew) the Elevation position of the antenna offpeak in one direction Conscan will signal a need to move to opposite direction. As you step (orslew) the Elevation further off peak in that direction the Conscan signal will flash more rapidly.When you turn Tracking back ON, the Elevation should move back toward peak, Conscan signalswill become less rapid and AGC will increase back to maximum. [Example: As you step theantenna UP in EL, a 2 will flash in the lower left of the display. As you continue to step UP in EL,the 2 will flash more rapidly. When you turn Tracking ON, EL will move back DOWN, the 2 willflash more slowly and AGC will increase. When the antenna has returned to peak signal position,Conscan signals will nearly cease (random 2, 4, 6 or 8) and AGC will be at its maximum value.]

AGC value will vary, representing the actual received signal level coming from the dish (to theTracking RCVR), pointed at its’ current Elevation position. The AGC value will be minimum whenthe antenna is pointed off satellite and will be maximum when the antenna is pointed at peaksatellite signal.


3-17

3.6.14. Adjusting PolarizationIf your system is fitted with a CIRCULAR polarization feed, polarization adjustment is NOT required.

Default setting of the system is Auto-Polarization operation. In this mode the ACU will calculate thepolarization angle for the desired satellite (SAT), based on the current Latitude (LAT) & Longitude (LON)of the ship. The system automatically rotates the LINEAR feed periodically to maintain optimum receivedsignal from the desired satellite as the ship travels. If a new satellite is targeted the ACU calculates thenew Azimuth, Elevation & Polarization angles and drives the antenna & feed to those calculated angles. Ifyou adjust the polarization of the feed while in Auto-Polarization mode, the feed will be driven back to thecalculated orientation when the next update is calculated.

If Auto-Polarization is OFF you will need to manually adjust the polarization periodically as the ship travels.To adjust polarization, while in manual mode:


From any of the other main display/entry menus, Press ANTENNA 4 times and view thePolarization entry mode display. Sequentially press the UP, or DOWN, arrow key to step thepolarization of the feed up or down as needed to optimize the AGC level.

If already in one of the ANTENNA sub-menus, continue pressing ANTENNA until the currentPolarization entry mode display is in view. Sequentially press the UP, or DOWN, arrow key tostep the polarization of the feed up or down as needed to optimize the AGC level.


The POL information will be accessed from memory in the ACU and displayed as the key ispressed.

What do I see?

Polarization and the current value of AGC will be displayed. The polarization display you see maybe an alpha or a numeric value, depending on your POL TYPE parameter setting. You will seethe AGC increase as you adjust polarization the correct direction or will decrease if you go too faror go the wrong direction. When the AGC is as high as you can make it, the polarization of thefeed will be optimum.

3.6.15. Change Tracking BandYou can set the system to Track a Ku or a C/X (C or X) band signal, as is appropriate, for the satellitesignal that you are currently receiving. On your system, the STEP SIZE (AZ & EL) system parametersmay be different for these frequency bands. If they are different, your system may not Track the satellitevery well if the Band selection is not set correctly.


From any of the other main display/entry menus, press MODE to access the Tracking menu, thenpress the DOWN arrow key twice within 3 seconds to toggle the BAND selection (Ku or C/X) asappropriate for the band of the signal you are currently receiving.

If already in one of the MODE sub-menus, press ANTENNA, press MODE to access the Trackingmenu, then press the DOWN arrow key twice within 3 seconds to toggle the BAND selection(Ku or C/X) as appropriate for the band of the signal you are currently receiving.


The CONTROL – TRACKING information will be accessed from memory in the ACU anddisplayed as the MODE key is pressed. The AZ & EL STEP SIZE values will be retrieved frommemory in the Conscan controller and overwrite the previous values in the ACU memory in whenthe BAND is changed. Displayed BAND selection will change when the DOWN arrow key ispressed.


3-18

What do I see?

The Tracking menu BAND and Tracking ON/OFF state will be seen initially. The displayed BANDselection will change when the DOWN arrow key is pressed. If the DOWN arrow key is notpressed twice within 3 seconds the display will revert to the previous BAND selection. If theDOWN arrow key is pressed twice within 3 seconds the display will remain set at the new BANDselection.

3.6.16. Start a SearchIf you are not on a satellite signal, simply start a search pattern from the current Azimuth and Elevation.The antennas’ current position becomes the origin of an expanding square search pattern. Auto-Threshold will re-set Threshold value as the search is conducted.

You should not start a search if you are ON a satellite signal, as this will cause Auto-Threshold to re-setThreshold to too high a value. In this case you should re-target the satellite and then start search, or bymanually searching by stepping Azimuth and Elevation.


From any of the other main display/entry menus, Press MODE 2 times, then press the UP arrowkey.

If already in one of the MODE sub-menus, press ANTENNA then press MODE 2 times, thenpress the UP arrow key.


The CONTROL – SEARCH information will be accessed from memory in the ACU and displayedas the MODE key is pressed.

What do I see?

The Search OFF status menu will be seen. When the UP arrow key is pressed a search patternwill begin and the Search LED will go ON.

3.6.17. Stop a SearchTo stop a search pattern that has already begun:


From any of the other main display/entry menus, Press MODE 2 times, then press the DOWNarrow key.

If already in one of the MODE sub-menus, press ANTENNA the press MODE 3 times, thenpress the DOWN arrow key.


The CONTROL – SEARCH information will be accessed from memory in the ACU and displayedas the MODE key is pressed.

What do I see?

The Search ON status menu will be seen. When the DOWN arrow key is pressed the searchpattern will halt and the Search LED will go OFF.


3-19

3.6.18. To View ERROR(s)What button(s) do I push?

From any of the other main display/entry menus, Press MODE 3 times and note/record the righthand 4 digit value.

If already in one of the MODE sub-menus, press ANTENNA the press MODE 3 times.


The appropriate information will be accessed from memory in the ACU and displayed as the key ispressed.

What do I see?

The STATUS-ERROR information display containing the current Pedestal communications count(Left 4 digits) and the ERROR code (Right 4 digits). This 4 digit error code value is the SUM ofthe discrete errors that have occurred. The discrete errors are:

128 Satellite Out Of Range 64 Reserved for future use 32 Reserved for future use 16 Conscan Error 8 Pedestal Error 4 ACU-PCU Communication Failure 2 Wrong Synchro Converter Type 1 Gyro Read Error

Refer to the next scenario to Clear the ERROR(s).

Infrequent errors may not indicate a failure that requires immediate repair, however, these shouldbe recorded/logged and cleared to ascertain how often they are occurring or if they are becomingmore frequent. Frequent or constant errors indicate a need to troubleshoot and repair the sourceof the error(s).

Refer to the Troubleshooting section of this manual to troubleshoot and repair frequent orconstant errors.

3.6.19. Clear ERROR(s)What button(s) do I push?

Press MODE 3 times, note/record the right hand 4 digit value for historical log, the press UParrow key to clear the error code and extinguish the Error LED.


The error information in memory will be cleared as the key is pressed.

What do I see?

The STATUS-ERROR information display containing the current Pedestal communications count(Left 4 digits) and the ERROR code (Right 4 digits). When the UP arrow was pressed theERROR code should become 0000 and the ERROR LED should extinguish.


3-20

3.7. STABILIZED PEDESTAL ASSEMBLY OPERATIONThe stabilized pedestal assembly is operated remotely at the ACU as described in previous sections. Thereare no operating instructions applicable to the pedestal assembly by itself.

3.8. RADOME ASSEMBLY OPERATIONWhen operating the system it is necessary that the radome access hatch be closed and secured in place atall times, otherwise wind gusts will disturb antenna pointing.

9797-32 C/Ku Band TROUBLESHOOTING and ADJUSTMENTS

4-1

4. TROUBLESHOOTING and ADJUSTMENTSThis section describes the theory of operation to aid in troubleshooting and adjustments of the antenna system.Refer to the Trouble shooting section of the DAC-97 for additional troubleshooting details.

4.1. THEORY OF OPERATIONThe antenna system is mounted on a three axis stabilization assembly that provides free motion with 3degrees of freedom. This assembly allows the inertia of the antenna system to hold the antenna pointedmotionless in inertial space while the ship rolls, pitches and yaws beneath the assembly. Three low frictiontorque motors attached to each of the three free axes of the assembly provide the required force to overcomethe disturbing torque imposed on the antenna system by cable restraints, bearing friction and small aircurrents within the radome. These motors are also used to re-position the antenna in azimuth and elevation.

The Pedestal Control Unit (PCU) uses inputs from the level cage sensors to calculate the amount of torquerequired in each axis to keep the antenna pointed within +/-0.2 degrees. The basic control loops for CrossLevel, Level and Azimuth are shown in the Control Loop Diagram, drawing 116287. The primary sensor inputfor each loop is the rate sensor mounted in the Level Cage Assembly. This sensor reports all motion of theantenna to the PCU. The PCU immediately responds by applying a torque in the opposite direction to thedisturbance to bring the antenna back to its desired position. Both the instantaneous output of the ratesensor (Velocity Error) and the integrated output of the rate sensor (Position Error) are used to achieve thehigh pointing accuracy specification.

The calculated torque commands are converted to a 5 volt differential analog signal by a Digital to Analogconverter (D/A) and sent to each of three Brushless Servo Amplifiers. These amplifiers provide the properdrive polarities and commutation required to operate the Brushless DC Servo Motors in torque mode. TheTorque acting on the mass of the antenna cause it to move, restoring the rate sensors to their originalposition, and closing the control loop.

Since the rate sensors only monitor motion and not absolute position, a second input is required in each axisas a long term reference to keep the antenna from slowly drifting in position. The Level and Cross Levelreference is provided by a two axis tilt sensor in the level cage assembly. The Azimuth reference is providedby combining the ships gyro compass input and the antenna relative position.

4.2. INITIALIZATION SEQUENCEA functional operation check can be made on the antenna stabilization system by observing its behaviorduring the 4 phases of initialization.

Step 1. Turn on the AC power switch at the power supply. Verify the level platform motor drives the levelcage CCW to the stop and then CW 45 degrees.

Step 2. Verify the antenna moves forward or back to bring the top of the level cage to a level position inthe for/aft direction. This step takes approximately 10 seconds and will result in the dish being at 45degrees in elevation. The level cage may still be be tilted left or right at this time.

Step 3. After the level cage is positioned in the for/aft direction, verify the antenna moves left or right tobring the top of the level cage to a level position in the left/right direction. This step takes approximately10 seconds.

Step 4. After the level cage is positioned in the left/right direction, verify the antenna moves CW inazimuth to trip the home sensor switch. After another 10 second wait, the antenna will report its versionnumber at the DAC-97 Antenna Control Unit (ACU).

If any of theses steps fail, or the DAC-97 reports model "xx97" re-configure the PCU as described in section4.3. If initialization still fails, this indicates a drive or sensor problem (see sections 4.8 and 4.9 for

TROUBLESHOOTING and ADJUSTMENTS 9797-32 C/Ku Band

4-2

troubleshooting information).

4.3. PEDESTAL CONTROL UNIT CONFIGURATIONThe PCU is designed to be used with a variety of antenna pedestal configurations. The configurationinformation that is unique to each pedestal type is stored in a Non Volatile Random Access Memory(NVRAM) in the PCU enclosure. If the PCU is replaced or the NVRAM in the PCU should become corrupt,the PCU must be re-configured to operate with the pedestal it is installed on. The default configuration for thePCU is model xx97. In this configuration the PCU will not drive any of the three torque motors to preventdamage to the unknown pedestal.

To configure the PCU, select the REMOTE COMMAND window on the DAC-97 by pressing the MODE keyuntil this window appears (if the DAC-97 will not advance beyond the REMOTE AUX window, enter 7979 andpress ENTER). In the REMOTE COMMAND window, key in ".78 ENTER". "N0000" should appear in thecommand window. Key in “140” to select a 9797 system. Press ENTER to send this system type commandto the PCU. Press ENTER several time to select REMOTE PARAMETERS. Press UP arrow and ENTER tosave the system type in the PCU. Press ANTENNA, MODE, N/S to display the Remote Version Number. Itshould now display "9797 VER 1.nn".

4.4. DISPLAY OFFSET ADJUSTMENTSThe displayed Elevation and Azimuth positions may be different than the calculated look angles due tomechanical installation or magnetic variation offsets. If the displays are consistently off by the same amount,you may correct the displayed positions by the following procedure.

1 Note the magnitude and direction of the errors in elevation and azimuth you wish to offset. Dividethe error by 0.1 then add or subtract this value from the preset trim value.

2 Press the MODE key until the ELTRIM display is indicated. If the MODE will not advance beyondREMOTE AUX, press 7979 and ENTER. Adjust the ELTRIM display up or down by the amountcalculated in step 1. Key in the new entry and press ENTER. For negative entries, press theNS/EW key.

3 Press the MODE key until the AZTRIM display is indicated. Adjust the AZTRIM display up or downby the amount calculated in step 1 or enter the magnetic variation x 10. Positive numbers indicateEast Variation. For negative entries, press the NS/EW key.

4 Press the MODE key until the display indicates SAVE SETUP PARAMETERS. Press UP andENTER.

EXAMPLE: The Azimuth display consistently reads 3 degrees high. The AZTRIM value is set to 0 (default).To correct this error, the AZTRIM value needs to be "reduced" by 3 divided by 0.1 = 30 counts so the newAZTRIM value should be -30.

4.5. ANTENNA PEDESTAL OFFSET ADJUSTMENTLarge variations in Azimuth position indicate the Azimuth Reference position is incorrect and should becorrected with a reference offset instead of an Azimuth Trim offset. This is especially true if sector blockagemapping is used. Pedestal software version 1.20 and later allows adjustment of the Azimuth Referencehome flag to compensate for installation variations.

To offset the Azimuth Reference home flag position, select the REMOTE COMMAND window on the DAC 97by pressing the MODE key several times. In the REMOTE COMMAND window, key in ".78 ENTER". "N0000"should appear in the command window. Key in 6 and three digits for the azimuth reference offset value from000 to 255 (corresponding to 0 to 360 degrees). Press ENTER to send the offset s system type command tothe PCU. Press ENTER several time to select REMOTE PARAMETERS. Press UP arrow and ENTER tosave the system type in the PCU.

9797-32 C/Ku Band TROUBLESHOOTING and ADJUSTMENTS

4-3

4.6. BALANCING THE ANTENNA AND EQUIPMENT FRAMEThe antenna and equipment frame are balanced at the factory however, after disassembly for shipping ormaintenance, balance adjustment may be necessary. Balancing must be done with the power supply turnedoff. No belt removal is required to balance the antenna pedestal. Balancing is accomplished by adding orremoving balance trim weights at strategic locations to keep the antenna from falling forward/back or side toside. The antenna system is not pendulous so 'balanced' is defined as the antenna remaining at rest whenleft in any position. The antenna should be balanced within one or two ounces at the typical trim weightlocation of 2 feet from the axis of rotation.

The recommend balancing order is Elevation Axis with the antenna pointed at the horizon (referred to as frontto back balance). Elevation Axis with the antenna pointed at zenith (referred to as top to bottom balance).Then Cross Level axis at any elevation position (referred to as side to side balance). The balance aboutazimuth axis is accomplished by accurately positioning the cross level beam in the azimuth stabilizationassembly. This adjustment is done at the factory using special alignment tools. Do NOT attempt to adjustthe cross level beam position in the field without the proper test fixtures.

4.7. ANTENNA POSITION ERROR MONITORINGThe DAC-97 provides a means for monitoring the position error of the antenna for diagnostic purposes. Ifthis error is excessive, it indicates external forces are acting on the antenna. These forces may be the resultof static imbalance, excessive bearing friction, cable binding, or wind loading.

To view the position error, select the REMOTE COMMAND window on the DAC-97 by pressing the MODEkey several times. Key in ".78 ENTER" (note the decimal point). "x0000" should appear in the commandwindow. Press the MODE key once more to display the REMOTE MONITOR window. The lower display willshow "iv" and three 4 digit hex numbers. The numbers indicate Cross Level, Level and Azimuth errors at aresolution of 1 part in 65536 or 0.0055 degrees. For example a display like "iv FFFF 0001 FFFD" indicatesthe Cross Level error is -.005 degrees, the Level error is + .005 degrees and the Azimuth error is -.016degrees. The normal range of these numbers is FFF0 to 000F and they typically will bounce aroundrandomly within this range.

TROUBLESHOOTING and ADJUSTMENTS 9797-32 C/Ku Band

4-4

4.8. OPEN LOOP SENSOR TESTThe DAC-97 provides a means for monitoring the output of the 3 solid state rate sensors and the 3 referencesensors for diagnostic purposes. The rate sensors and reference sensors are the primary inputs to the PCUfor stabilization.

To monitor the rate sensors, select the REMOTE COMMAND window on the DAC-97 by pressing the MODEkey several times. Key in ".119 ENTER" (note the decimal point). "w0000" should appear in the commandwindow. Press the MODE key once more to display the REMOTE MONITOR window. The lower display willshow "w" and three 4 digit decimal numbers. The numbers represent the Cross Level, Level and Azimuthrate sensor outputs respectively with an nominal display of 2048. The Cross Level display should decreasewhen the antenna is tilted to the left and increase when tilted to the right. The Level display should decreasewhen the antenna is tilted forward and increase when tilted back. The Azimuth display should decrease whenrotated CCW and increase when rotated CW. The display change occurs during movement and returns tonominal when movement stops.

To monitor the reference sensors, select the REMOTE COMMAND window on the DAC-97. Key in ".118ENTER" (note the decimal point). "v0000" should appear in the command window. Press the MODE keyonce more to display the REMOTE MONITOR window. The lower display will show "v" and three 4 digitdecimal numbers. The numbers represent the Cross Level and Level Tilt Sensor outputs and the azimuthhome flag respectively. The nominal display is 2048 for the tilt sensors and either 0020 or 4050 for the homeflag. The Cross Level Tilt display should decrease when the antenna is tilted to the left and increase whentilted to the right. The Level tilt display should decrease when the antenna is tilted forward and increase whentilted back. The Home Flag display will show 4050 when the home flag magnet is away from the sensor and0000 when the home flag magnet is under the sensor. The display changes are static and remain displacedas long as the level platform is disturbed or the home flag sensor is activated.

4.9. OPEN LOOP MOTOR TESTThe DAC-97 provides a means for driving each individual torque motor to test that motors functionality. Bydriving each axis and observing the resulting motion of the antenna, a coarse operational status of the motorand motor driver can be established.

To manually drive the motors, select the REMOTE COMMAND window on the DAC-97. Key in ".94 ENTER"(note the decimal point). "^0000" should appear in the command window. To drive the Cross Level motor,key in 1064, 1128 or 1192 to drive the Cross Level axis left, off and right respectively. To drive the Levelmotor, key in 2064, 2128 or 2192 to drive the level axis forward, off or back. To drive the Azimuth motor, keyin 3064, 3128 or 3192 to drive the azimuth axis CW, off or CCW.

9797-32 C/Ku Band DRAWINGS

5-1

5. DRAWINGSThe drawings listed below are provided as a part of this manual for use as a diagnostic reference.

5.1. Model Specific DrawingsDrawing Title

118695-2A System Drawing 5-3121843-A System Block Diagram – Model 9797-32 5-5121432-2A General Assembly – Model 9797-32 5-8119119-0 Antenna System Schematic – Model 9797-32 5-13111365-17J 144” Radome Assembly 5-14109256-M Radome Base Frame Assembly 5-17121426-A Equipment Frame Assembly – Model 9797-32 5-20119624-E Modular Conscan Scalar Plate Assembly 5-23119625-A Modular Drop-In Tx/Rx Circular C-Band Feed Assembly 5-26119628-A Modular Drop-In Tx/Rx Linear C-Band Feed Assembly 5-28119629-C Modular Drop-In Tx/Rx Linear Ku-Band Feed Assembly 5-30117196-B Codan C-Band C-Band Converter 5-32117275-C Codan Ku-Band Ku-Band Converter 5-33117199-B Codan Power Supply 5-34117371-A Air Conditioner Assembly 5-35

5.2. Series 97 General DrawingsDrawing Title

121408-A Base Stand Assembly 5-37116328-AH Stabilization Assembly 5-39116040-0 Unlimited Azimuth Interconnect Diagram 5-44115938-1G Interface Harness Assembly 96,97 5-45115921-E Pedestal Harness Schematic Model xx96, xx97 5-46115197-E Pedestal Control Unit PCB Schematic 5-47116784-C BLDC Servo Amplifier Schematic Diagram 5-48116280-C Shielded Polang Aux Relay PCB Schematic 5-49117149-B 4 Channel RF Modem PCB Schematic 5-50116448-C BL Conscan Motor Driver PCB Schematic 5-51116284-B Power Supply Chassis Wiring Diagram 5-52116881-G Base MUX Rack Panel Assembly 5-53116287-0 Control Loop Diagrams 5-59

DRAWINGS 9797-32 C/Ku Band

5-2

FIND QTY PART NO DESCRIPTION REFERENCE DESIGNATOR

SINGLE LEVEL MFG BILL OF MATERIAL

REV

1 1 121432-2 GENERAL ASS'Y, 9797-32, 220VEA X4

2 0 117196-2NS2W5 CODAN 5740 TRANSCEIVER, C, EXTENDEEA

3 0 117275-1N314 CODAN 5916 TRANSCEIVER, KU, AUS/EUTEA

4 0 117199-2 POWER SUPPLY, CODAN 5582EA

5 1 113105-83313 GENERAL ASS'Y, DAC-97EA R

6 1 113885-2 POWER SPLITTER, 70/140 MHZEA A

7 2 115384-3 CABLE ASS'Y, SMA(M)-BNC(M), 72 IN.EA D

8 3 109464-6 CABLE ASS'Y, RF, BNC(M)-BNC(M), 6 FT.EA B

9 1 116298-2 HARNESS ASS'Y, ACU TO MUX/TERM TO EA F1

10 1 116670-1 CABLE ASS'Y, RS-232EA F

11 1 116881-2 BASE MUX RACK PANEL ASS'YEA G

12 1 114569 BALANCE WEIGHT KITEA C

13 1 119877 KIT, GPS INSTALLATIONEA A

14 2 120569 MANUAL, 9797-32 I&OEA A

15 2 116363 MANUAL, DAC-97, I&OEA E

16 1 116300 SOFTWARE, PC-DAC, VER. 1.27EA D1

17 1 111365-17 RADOME ASS'Y, 144 INCH, WHITE/FOAM/SEA J

18 1 109256-5 BASE FRAME ASS'Y, STEEL, 21 IN. LEGS, EA M

19 1 116676 TERMINAL MOUNTING STRIP ASS'Y, ACUEA A

20 1 118060 WARRANTY PACKETEA

21 1 119601 CAUTION LABEL, MICROWAVE HAZARDEA A

22 8 114586-626 SCREW, HEX HD, 3/8-16 x 1-1/2, S.S.EA

23 16 114580-031 WASHER, FLAT, 3/8, S.S.EA A

24 8 114583-031 NUT, HEX, 3/8-16, S.S.EA

25 0 121843 SYSTEM BLOCK DIAGRAM, 9797-32EA X2

97 TX/RX 118695-2

SYSTEM, 9797-32, 16W-KU 40W-C

AREVDRAWING NUMBERPROD FAMILY

17-Jun-03EFF. DATE SHT 1 OF 1

SYSTEM, 9797 - 32, 16W Ku, 40W C

118695-2 A



REV

1 1 121432-2 GENERAL ASS'Y, 9797-32, 220VEA A

2 1 119877 KIT, GPS INSTALLATIONEA A

3 1 113105-XXXXX DAC-97, GENERIC, SEE RAC CODE (PROG. W/DACM-3XX) (REF. W/O)EA

4 1 119624 SCALAR PLATE ASS'Y, DROP-IN CONSCAEA E

5 1 113885-2 POWER SPLITTER, 70/140 MHZEA A

6 4 112474-2 HELIAX CONNECTOR, N(M) C.F.E.EA

7 2 115384-3 CABLE ASS'Y, SMA(M)-BNC(M), 72 IN.EA D

8 3 109464-6 CABLE ASS'Y, RF, BNC(M)-BNC(M), 6 FT.EA B

9 1 116298-2 HARNESS ASS'Y, ACU TO MUX/TERM TO EA F1

10 1 116670-1 CABLE ASS'Y, RS-232EA F

11 1 116881-2 BASE MUX RACK PANEL ASS'YEA G

12 2 112473-2 HELIAX CABLE, 50 OHM C.F.E.EA

13 1 115938-1 HARNESS ASS'Y, INTERFACEEA G

14 1 115920-1 HARNESS ASS'Y, PEDESTALEA F2

15 1 116649-1 HARNESS ASS'Y, REFLECTOREA J2

16 1 115444-1 PCU ENCLOSURE ASSEMBLYEA N

17 1 116024-3 SHIELDED POLANG RELAY ASS'YEA J1

18 1 116000-1 SERVO AMPLIFIER ASSEMBLYEA I

19 2 116782-1 MODEM ASS'Y, 4 CH. RF (PEDESTAL)EA G

20 2 116782-2 MODEM ASS'Y, 4 CH. RF (BASE)EA G

21 1 115995-1 POWER SUPPLY ASSEMBLYEA L

22 1 115708-2 CIRCUIT BREAKER BOX ASS'Y, 97 110V -2=110V, -3=220VACEA G

23 1 117371-4 AIR CONDITIONER ASS'Y, 16000 BTU, 220EA A1

24 1 121281 CABLE ASS'Y, SMA(F)-SMA(M), 3 IN.EA A

25 2 114972-2 CABLE ASS'Y, RF, 72 IN, SMA STRAIGHTEA H

26 2 113303-5 CABLE ASS'Y, RF, 84 IN, SMA 90 DEGREEEA N

27 2 111079-8 CABLE ASS'Y, SMA(M)-N(M), 8 FT.EA C

28 1 116674-3 CABLE ASS'Y, M & C, DUAL MUX, ADD-ONEA D2

29 2 115208-4 CABLE ASS'Y, SUPERFLEX, 4 FT. C.F.E.EA

LIT 121843

SYSTEM BLOCK DIAGRAM, 9797-32





REV

30 2 121726 CABLE ASS'Y, M&C, CODAN, (6FT) KU-BAN C.F.E.EA A

31 1 116255-14 CABLE ASS'Y, RG-214, 14 FTEA

32 4 115492-1 ADAPTOR, N(F)-SMA(F), W/FLANGEEA C

33 1 116466 ROTARY JOINT, DUALEA A

34 2 119722-2 CABLE ASS'Y, CODAN AC POWER C.F.E.EA A

35 2 118873 CODAN POWER CABLE C.F.E.EA

36 1 113303-10 CABLE ASS'Y, RF, 7 IN, SMA 90 DEGREEEA N

37 1 113303-9 CABLE ASS'Y, RF, 17 3/8 IN, SMA 90 DEGREA N

38 1 117280 (FOR REFERENCE USE ONLY)LNB, Ku-BAEA

39 1 114723-1 LNA, C-BANDEA

40 2 117199-2 POWER SUPPLY, CODAN 5582 C.F.E.EA

41 1 117275-XXXXX (REFERENCE ONLY) CODAN 5900 TRANS C.F.E.EA

42 1 117196-XXXXXX (REFERENCE ONLY) CODAN 57XX TRANS C.F.E.EA

43 1 110172-1 WAVEGUIDE, WR-75, 90 DEG E-BENDEA E

44 2 110171-3 WR-75 FLEXIBLE WAVEGUIDE, 24 INEA E

45 1 118799-1 WAVEGUIDE, WR-75 RIGID, 9797 C/KUEA A

46 1 119629-2 FEED ASS'Y, DROP-IN KU-BAND LINEAR WEA C

50 1 112988-7 WR-137, 90 DEGREE E-BENDEA B

51 2 112991-2 FLEXGUIDE, 24 IN WR137EA E

52 1 117459-1 RIGID WAVEGUIDE, WR-137EA D

53 1 119628 FEED ASS'Y, DROP-IN C-BAND LINEAR, TXEA A

LIT 121843

SYSTEM BLOCK DIAGRAM, 9797-32



LK

SYSTEM BLOCK DIAGRAM

121843 A

LK



REV

1 1 121410-3 PEDESTAL ASS'Y, 9797, HEAVY DUTY W/ EA A

2 1 121605 POWER ASS'Y, 220V, 34EA A

3 1 121426 EQUIPMENT FRAME, CODAN, C KuEA A

4 1 116803 REFLECTOR, OFFSET, 2.4MEA C

5 1 120292 FEED STRUT, TOPEA A

6 1 120293 FEED STRUT, LEFTEA A

7 1 120294 FEED STRUT, RIGHTEA A

8 1 119625 FEED ASS'Y, DROP-IN C-BAND CIRCULAREA A

9 0 119628 FEED ASS'Y, DROP-IN C-BAND LINEAR, TXEA A

10 1 119629-2 FEED ASS'Y, DROP-IN KU-BAND LINEAR WEA C

11 1 119624 SCALAR PLATE ASS'Y, DROP-IN CONSCAEA E

12 1 121655-1 LABELS INSTALLATION, XX97EA A

15 1 117464-2 BRACKET, RIGID WAVEGUIDE, WR-137EA E

16 2 117464-1 BRACKET, RIGID WAVEGUIDE, WR-137EA E1

17 2 115997-2 BRACKET, RIGID WAVE GUIDEEA G

18 2 115997-3 BRACKET, WAVEGUIDEEA G

19 5 115998-1 STRAP, RIGID WAVEGUIDEEA J

20 5 115998-10 STRAP, RIGID WAVEGUIDEEA J

21 4 117747 PLATE, RIGID WAVEGUIDEEA 0

25 1 117459-1 RIGID WAVEGUIDE, WR-137EA D


27 1 110172-5 WAVEGUIDE, WR-75, 90 DEG E-BENDEA E

28 1 118799-1 WAVEGUIDE, WR-75 RIGID, 9797 C/KUEA A

29 1 117507 WR-137 20DEG E-BENDEA 0

30 1 112988-7 WR-137, 90 DEGREE E-BENDEA B


35 2 115492-1 ADAPTOR, N(F)-SMA(F), W/FLANGE (NOT SHOWN ON DWG)EA C

36 1 116674-3 CABLE ASS'Y, M & C, DUAL MUX, ADD-ON (NOT SHOWN ON DWG)EA D2

37 2 111079-8 CABLE ASS'Y, SMA(M)-N(M), 8 FT. (NOT SHOWN ON DWG)EA C

97 TX/RX 121432-2

GENERAL ASS'Y, 9797-32, 220V





REV

38 1 117978-15 CABLE ASS'Y, N(M)-N(M), 15 FT. (NOT SHOWN ON DWG)EA A

39 1 117217-1 ITT CONNECTOR, SIZE 14, 19P (NOT SHOWN ON DWG)EA C

40 1 116649-1 HARNESS ASS'Y, REFLECTOR (NOT SHOWN ON DWG)EA J2

41 1 119159-2 FILTER, HIGHPASS (NOT SHOWN ON DWG)EA

42 2 111079-6 CABLE ASS'Y, SMA(M)-N(M), 6 FT. (NOT SHOWN ON DWG)EA C

50 20 114580-029 WASHER, FLAT, 1/4, S.S.EA

52 8 114593-160 SCREW, SOCKET HD, 10-32 x 1/4, S.S.EA

53 12 114586-537 SCREW, HEX HD, 1/4-20 x 3/4, S.S.EA


55 3 114625-108 WASHER, FENDER, 1/4 IN, 18-8 S.S. (1-1/4 EA

56 6 114583-029 NUT, HEX, 1/4-20, S.S.EA



60 2 108468-3 STANDOFF, 1.50 L, .31 OD, .20 IDEA

61 2 108468-4 STANDOFFEA

62 4 108468-7 STANDOFFEA G1

63 4 114592-897 STUD, FULLY THREADED, 10-32 x 2-1/2, S.EA

64 70 114580-011 WASHER, FLAT, #10, S.S.EA

65 38 114583-011 NUT, HEX, 10-32, S.S.EA A

66 30 114581-011 WASHER, LOCK, #10, S.S.EA

67 8 114588-836 SCREW, PAN HEAD, PHILLIPS, 10-32 x 1-1/EA

68 30 114593-169 SCREW, SOCKET HD, 10-32 x 1, S.S.EA

69 4 114588-827 SCREW, PAN HEAD, PHILLIPS, 10-32 x 3/8, EA

70 16 114580-007 WASHER, FLAT, #6, S.S.EA

71 4 114583-007 NUT, HEX, 6-32, S.S.EA

72 4 119973-117 SCREW, SOCKET HD, M4 X 12EA

73 4 114580-230 WASHER, FLAT, M4, S.S.EA


75 4 114581-230 WASHER, LOCK, M4, S.S.EA

97 TX/RX 121432-2






REV

76 4 114581-007 WASHER, LOCK, #6, S.S.EA


97 TX/RX 121432-2





REFERENCE DRAWINGS:

NOTES: UNLESS OTHERWISE SPECIFIED

121432-2 A

AFNDETAIL 'C'SCALE: 1/2

DETAIL 'D'SCALE: 1/2

Part No.Model No.

Concord, California

Serial No.

SCALE: 1/2DETAIL 'B'

SEE DETAIL 'E'

SEE DETAIL 'B'

SEE SHT. 2

DETAIL 'F'SCALE: 1/2

SEE DETAIL 'A'

SEE DETAIL 'G'

SEE DETAIL 'F'

SCALE: 1/2DETAIL 'E'

SCALE: 1/2DETAIL 'A'

SCALE: 1/2DETAIL 'G'

SEE DETAIL 'D'

SEE DETAIL 'G'

SEE DETAIL 'A' SEE DETAIL 'C'

LK

LINEAR C-BAND CONFIGURATION

LINEAR Ku-BAND CONFIGURATION



AFN

121432-2 A

N

S

CIRCULAR C-BAND CONFIGURATION

N

S

S

N

- OR -



REV

12 117762-1 SILICONE ADHESIVE, WHT RTV 122, 10.1 EA A

1 110327 HARDWARE KIT, 144 INCH RADOMEEA L

1 1 109119-17 RADOME FAB ASS'Y, 144 INCH, WHITE/FOEA E

9 3 109258-1 RELIEF, STRAIN W/SEALING LOCK NUTEA F

16 120 109324-16 GASKET, FOAM 1 IN WIDE x 1/4 THKIN L1

19 28 114587-829 SCREW, ROUNDHEAD, PHILLIPS, 10-32 X 1EA

20 28 114580-011 WASHER, FLAT, #10, S.S.EA

22 28 114583-011 NUT, HEX, 10-32, S.S.EA A

28 1 109783-2 WRENCH, LEA

29 10 109172 LATCH, SPRINGEA A

30 10 109250 PLATE, LATCHEA B

31 7 108959 RADOME LATCHEA 0

32 20 114587-146 SCREW, ROUNDHEAD, PHILLIPS, 6-32 X 3/EA

33 20 114580-007 WASHER, FLAT, #6, S.S.EA

35 20 114583-007 NUT, HEX, 6-32, S.S.EA

COMMON 111365-17

RADOME ASS'Y, 144 INCH, WHITE/FOAM/SIDE&PAN

JREVDRAWING NUMBERPROD FAMILY


MAB

RADOME ASSEMBLY, -1 THRU -25

111365 J

MAB

RADOME ASSEMBLY, 144", -1 THRU -25

111365 J



REV

1 1 110258-1 BASE FRAME WELDMENT, 110/126/144 INCEA R

2 8 110264-10 BASE FRAME LEG, STEELEA J

3 8 110264-2 BRACE MACHININGEA J

4 4 110264-3 BRACE MACHININGEA J

5 8 113387-1 BASE FRAME FOOT, STEELEA D1

6 36 114586-623 SCREW, HEX HD, 3/8-16 x 1, S.S.EA B


8 40 114583-031 NUT, HEX, 3/8-16, S.S.EA


13 16 114580-033 WASHER, FLAT, 1/2, S.S.EA

15 8 114583-033 NUT, HEX, 1/2-13, S.S.EA


COMMON 109256-5

BASE FRAME ASS'Y, STEEL, 21 IN. LEGS, 110/126/144

MREVDRAWING NUMBERPROD FAMILY


MFJPDY

MP

RADOME BASE FRAME ASSEMBLY, -1, -2, -5

109256 M1

CDC

BASE FRAME ASS'Y (FLUSH MOUNT), -3, -4

109256 M1



REV

1 1 115995-1 POWER SUPPLY ASSEMBLYEA L

2 1 115444-1 PCU ENCLOSURE ASSEMBLYEA N


4 1 116024-3 SHIELDED POLANG RELAY ASS'YEA J1

5 1 121427-1 LEVEL CAGE ASS'Y, SHIELDEDEA A

6 1 109770-21 BELT, TIMING, 16.320 PITCH, 200 GROOVEEA

7 2 116782-1 MODEM ASS'Y, 4 CH. RF (PEDESTAL)EA G

9 1 115920-1 HARNESS ASS'Y, PEDESTALEA F2

10 1 115938-1 HARNESS ASS'Y, INTERFACEEA G

14 2 118945 PLATE, POWER SUPPLYEA A

15 2 112029-2 BRACKET, POWER SUPPLY, DRIVEREA A

16 4 121501-2 STANDOFF, HEX, 1/4-20 MALE/FEMALE, DIEA A

17 4 110982-5 STANDOFF, .50 OD X 3 LG, 1/4-20EA

18 2 117180-2 MOUNTING PLATE, RADIOEA H

19 2 115667-9 STANDOFF, THREADED 3/8-16, 2.88 LONGEA J

20 4 114719-15 STANDOFF, HEX M-F, 6-32, .25 OD X 1.25 LEA

21 1 108724-4 PLATE, COUNTER WEIGHT, 1/4 X 7-1/4 X 1EA C1

50 8 114588-204 SCREW, PAN HEAD, PHILLIPS, 8-32 x 1-3/4,EA

51 8 114580-009 WASHER, FLAT, #8, S.S.EA




55 44 114580-029 WASHER, FLAT, 1/4, S.S.EA

56 4 114576-540 SCREW, FLAT HEAD, PHILLIPS, 1/4-20 x 3/4EA


58 4 114583-029 NUT, HEX, 1/4-20, S.S.EA

59 4 114625-107 WASHER, FENDER, 1/4, (1 IN OD), S.S.EA


61 4 114588-146 SCREW, PAN HEAD, PHILLIPS, 6-32 x 3/8, SEA

COMMON 121426

EQUIPMENT FRAME, CODAN, C Ku





REV

62 4 114580-007 WASHER, FLAT, #6, S.S.EA


64 2 114580-011 WASHER, FLAT, #10, S.S.EA

65 4 114586-680 SCREW, HEX HD, 1/2-13 x 3, S.S.EA

66 8 114580-033 WASHER, FLAT, 1/2, S.S.EA

67 4 114583-033 NUT, HEX, 1/2-13, S.S.EA


COMMON 121426





DETAIL ASCALE: 1/2


121426 A

AFN

LK

SEE DETAIL A



REV

1 1 119583 SCALAR PLATEEA A

2 1 117547 POLANG POT ASSEMBLYEA B

3 1 116471-2 DRIVER ASSEMBLY, CONSCAN MOTOREA L

4 2 112467-7 STANDOFF, .25 OD X .125 H, #6 SCREW EA

5 1 116278 HALL EFFECT SENSOR ASSEMBLYEA F

6 1 115458-3 BLOCK, SENSOREA G

7 1 116139-2 SIZE 23 BRUSHLESS MOTOREA J1

8 1 117924 BRACKET, MOTOREA A

9 2 111679-2 NYLON CABLE CLAMP, 3/16 DIAEA 0

10 1 116420-30 PULLEY, .080P 30TEA O

11 1 121880-1 MOTOR ASS'Y, PRIME FOCUS & OFFSET AEA A

12 2 116430-205 BELT, TIMING, .080 PITCH, 205 GROOVESEA

13 2 108468-7 STANDOFFEA G1

14 1 112490 PCB ASS'Y, MOTOR TERMINATIONEA E

15 1 116558 PCB MOUNTING BLOCKEA O

16 1 118094 GEAR, SPUREA O


18 2 119895-539 SCREW, SHOULDER, 3/8 DIA X 5/8 INCH, S.EA


20 4 119952-009 WASHER, STAR, INTERNAL TOOTH, #8, S.EA


22 2 114580-007 WASHER, FLAT, #6, S.S.EA


24 2 121323-539 SCREW, FLAT HEAD, SOCKET DRIVE, 1/4-EA



27 2 114583-029 NUT, HEX, 1/4-20, S.S.EA

28 3 114590-190 SCREW, SOCKET SET-CUP, 8-32 x 1/4, S.S.EA


COMMON 119624

SCALAR PLATE ASS'Y, DROP-IN CONSCAN

EREVDRAWING NUMBERPROD FAMILY




REV

30 1 114583-007 NUT, HEX, 6-32, S.S.EA

31 6 114592-542 STUD, FULLY THREADED, 1/4-20 x 1, SSEA

COMMON 119624

SCALAR PLATE ASS'Y, DROP-IN CONSCAN

EREVDRAWING NUMBERPROD FAMILY


SECTION A-ASCALE: 2X

A

A

MODULAR DROP-IN CONSCAN SCALAR PLATE ASS'Y.

AFN

119624 E

MFLK

LKAEFJPLK



REV

1 117373-1 FILTER, TX REJECT, C-BANDEA B

1 1 117696 E-BEND, WR-229EA 0

3 1 117507 WR-137 20DEG E-BENDEA 0


8 10 114580-029 WASHER, FLAT, 1/4, S.S.EA

9 14 114581-029 WASHER, LOCK, 1/4, S.SEA

11 24 114588-833 SCREW, PAN HEAD, PHILLIPS, 10-32 X 1, SEA

12 48 114580-011 WASHER, FLAT, #10, S.S.EA

13 24 114581-011 WASHER, LOCK, #10, S.S.EA

14 24 114583-011 NUT, HEX, 10-32, S.S.EA A


22 1 119932 OMT POLARIZER ASS'Y, TUNED CIRCULAEA C

COMMON 119625

FEED ASS'Y, DROP-IN C-BAND CIRCULAR




TX/RX CIRCULAR C-BAND FEED ASS'Y.

AFN

119625 A

S

N

MF



REV

1 1 119718 THROAT ASSEMBLY, C-BAND-LINEAREA A

2 1 116922 OMT-46, C-BANDEA B

3 1 117543 STOP, POLANGEA A


6 1 116656 ELBOW, C-BAND, 180 DEGEA C

7 1 115509 ROTARY JOINT, C-BANDEA C

8 1 118044 BRACKET, FEED BALANCING EA C

9 2 108519-4 WEIGHT, TRIM 7.0 OZEA


11 1 119630 SCALAR PLATE INSERT, C-BAND ECCENTEA A

13 1 117373-1 FILTER, TX REJECT, C-BANDEA B



16 25 114583-029 NUT, HEX, 1/4-20, S.S.EA

17 30 114581-029 WASHER, LOCK, 1/4, S.SEA

18 56 114580-029 WASHER, FLAT, 1/4, S.S.EA




22 48 114580-011 WASHER, FLAT, #10, S.S.EA

23 24 114581-011 WASHER, LOCK, #10, S.S.EA

24 24 114583-011 NUT, HEX, 10-32, S.S.EA A




28 2 114581-029 WASHER, LOCK, 1/4, S.SEA

COMMON 119628

FEED ASS'Y, DROP-IN C-BAND LINEAR, TX/RX



A

D

A

SCALE: 1/2

SECTION A-A

D

E

NOTES:

SCALE: 1/2VIEW D-D

E

SCALE: 1/2

VIEW E-E

AFN

119628 A

ESL



REV

1 1 112100-1 BRACKET, FEED COUNTERWEIGHTEA D

3 1 112711-29 OMT, KU-BAND, 1214, TX 14-14.5, RX 10.95EA F

4 1 117659 FILTER, REJECT - KU BAND TRANSMITEA A


6 1 119631 SCALAR PLATE INSERT, KU-BAND ECCENEA A

7 1 119643 FEED SPACER, KU-BANDEA B

8 1 116225 BRACKET, COUNTERWEIGHTEA B

9 1 115551-220 WAVEGUIDE EXTENSION, WR-75, 2 INEA D


11 1 115477-2 ROTARY JOINT, L-STYLE, WR-75EA B

12 1 119718 THROAT ASSEMBLY, C-BAND-LINEAREA A

13 1 117543 STOP, POLANGEA A




18 72 114580-007 WASHER, FLAT, #6, S.S.EA

19 36 114583-007 NUT, HEX, 6-32, S.S.EA





25 1 114583-029 NUT, HEX, 1/4-20, S.S.EA


28 36 114581-007 WASHER, LOCK, #6, S.S.EA

29 2 114580-029 WASHER, FLAT, 1/4, S.S.EA

COMMON 119629-1

FEED ASS'Y, DROP-IN KU-BAND LINEAR W/O CIR. CTR. WT.

CREVDRAWING NUMBERPROD FAMILY



DROP-IN KU BAND LINEAR CONSCAN FEED ASS'Y.

AFN

119629 C

S

N

DYAEF

(SEE TAB. BLOCK)

(SEE TAB. BLOCK)

QTY. 27QTY. 23QTY. 14DESCRIPTIONDASH

-1

-2

____ ____ ____

AFN

MAB

MAB

MAB

AEF

AEF

JP

JPMFAEFAEF



REV

1 1 116908-4 A/C UNIT, 16000BTU, 220 VACEA

2 1 116941 STREET ELBOW, 1/2 INCHEA

3 1 116938 FLEX HOSE, 1/2 INCHEA

4 1 109258-8 STRAIN RELIEF, W/SEALING LOCK NUTEA F

COMMON 117371-4

AIR CONDITIONER ASS'Y, 16000 BTU, 220V, 9797 ONLY

A1REVDRAWING NUMBERPROD FAMILY




REV

1 1 117354-1 MOUNTING SPIDER WELDMENT & MACHIEA D

3 1 116090 BASE STAND WELDMENTEA C

4 1 117806-24 CONDUIT, FLEXIBLE METAL, 24 INEA A

5 1 116062-27 FITTING, FLEXIBLE CONDUIT, 1/2 INEA


51 8 114580-033 WASHER, FLAT, 1/2, S.S.EA

52 4 114581-033 WASHER, LOCK, 1/2, S.S.EA

53 4 114583-033 NUT, HEX, 1/2-13, S.S.EA

COMMON 121408

BASE STAND ASS'Y, 9797



BASE STAND ASS'Y, 9797

AFN

121408 A


LK



REV

1 1 115757-3 BASE PLATE (UPPER)EA J1

2 1 115757-2 PLATE, BASE (LOWER)EA J1

3 4 115132-1 WIRE ROPE ISOLATOREA E3

4 1 115778 BLOCK, ROD ENDEA O

5 1 109705-15 ROD ENDEA B

6 1 115758 SPINDLE FLANGEEA

7 1 115646 SPINDLE, TUBULAREA F

8 1 115762 TUBE, SPRINGEA

9 1 115772 BLOCK, AZ STATICEA

10 1 118645 BLOCK ASS'Y, AZ REACTIONEA B

11 2 108802-1 BEARINGEA B

13 2 115389 ECCENTRIC BUSHINGEA C

14 2 108803-1 SHIM, GYROEA E

16 1 115781 PLATE, BEARINGEA A

17 1 115780-1 RING, AZ PULLEY/BEARINGEA A

18 1 115768 CANNISTER, AZEA L

19 1 115759 TUBE, BALL BUSHINGEA A

20 1 115710-5 BEARINGEA O

21 1 121775-1 HYBRID POWER RING ASS'Y, XX97EA B

23 3 116393-30 SPRING, 1.203 OD, SPR. STLEA C11

24 1 116034 HOME SWITCH ASS'Y, SHIELDEDEA F

25 3 115799 WASHER, PVCEA

26 1 115497-300 RING, SNAPEA

27 1 115743-437 WASHER, WAVEEA O

28 1 115763 PLATE,TOPEA E

29 1 115765-1 YOKE, CROSS LEVELEA G

31 1 117138 MOTOR ASS'Y, TRAINEA C

33 1 115764-2 SPRING SEAT, ADJUSTINGEA H1

34 1 117798-32 BEARING, BALL BUSHINGEA B

COMMON 116328

BASE SPINDLE/STABILIZATION ASS'Y

AHREVDRAWING NUMBERPROD FAMILY




REV

36 4 115927-9 BUMPER, RUBBEREA

39 1 108305-2 CHAIN ASS'Y, DRIVE, SIZE 25, 22.25 LG. S.EA L

40 1 116313 TENSION ARM, CHAINEA B

41 8 117645-2 ISOLATOR STOPEA A

42 4 115842 BRACKET, SERVO AMPLIFEREA B


46 1 114583-009 NUT, HEX, 8-32, S.S.EA




50 2 114593-206 SCREW, SOCKET HD, 1/4-20 x 5/8, S.S.EA


52 9 114580-009 WASHER, FLAT, #8, S.S.EA


54 1 116236-1 CLIP, SPRINGEA

55 6 114593-210 SCREW, SOCKET HD, 1/4-20 x 1-1/4, S.S.EA

56 4 114580-011 WASHER, FLAT, #10, S.S.EA


58 1 116175-1 SPRING, EXTENSIONEA



61 6 114593-207 SCREW, SOCKET HD, 1/4-20 x 3/4, S.S.EA

62 2 114593-209 SCREW, SOCKET HD, 1/4-20 x 1, S.S.EA



66 6 114593-335 SCREW, SOCKET HD, 3/8-24 x 1, S.S.EA


71 1 114583-033 NUT, HEX, 1/2-13, S.S.EA

72 1 114582-033 NUT, HEX JAM, 1/2-13, S.S.EA

COMMON 116328






REV


82 10 114580-029 WASHER, FLAT, 1/4, S.S.EA

83 8 114581-011 WASHER, LOCK, #10, S.S.EA

86 1 108665 SPROCKET, TENSIONEA A

87 1 108314 BEARING, PRECISIONEA B

88 4 108803-1 SHIM, GYROEA E

89 1 116326-1 BUSHING, PIVOTEA


92 1 114583-029 NUT, HEX, 1/4-20, S.S.EA




98 3 111679-5 NYLON CABLE CLAMP, 3/8 DIAEA 0

99 1 116236-2 CLIP, SPRINGEA

100 1 116175-2 SPRING, EXTENSIONEA

101 2 114593-172 SCREW, SOCKET HD, 10-32 x 1-3/4, S.S.EA

102 3 114583-011 NUT, HEX, 10-32, S.S.EA A

106 2 114581-011 WASHER, LOCK, #10, S.S.EA


109 1 109237-1 LINK, CONNECTINGEA O

112 1 117831-5 BEARING, REALI-SLIMEA O

113 4 112467-18 STANDOFFEA

114 3 114588-205 SCREW, PAN HEAD, PHILLIPS, 8-32 x 2, S.EA

115 2 118174-6 PLUG, NYLON FINISHINGEA

116 4 114590-619 SCREW, SOCKET SET-CUP, 3/8-16 x 1/2, S.EA

COMMON 116328




MFJT

RMCDFDFRMCDF

MFMABMAB

BASE SPINDLE / STABILIZATION ASSEMBLY

CDZ

116328 AH

BASE SPINDLE / STABILIZATION ASSEMBLY

CDZ

116328 AH

MAB

INTERFACE HARNESS ASSEMBLY

115938 G

MAB

MABMABMABAEFMFMABMF

seatel

Documents

temporary

home flag

ships gyro

terminal mounting

degraded rf

entering ships

aux serial

entering ships