Sea Tel ST144-21 Installation And Operation Manual
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Sea Tel ST144-21 Installation And Operation Manual

Dual c/quad ku-band tvro
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Sea Tel, Inc.
4030 Nelson Avenue
Concord, CA 94520
Tel: (925) 798-7979
Fax: (925) 798-7986
Web:
http://www.cobham.com/seatel
Sea Tel Inc is also doing business as Cobham Antenna Systems
August 2, 2012
INSTALLATION AND OPERATION MANUAL
FOR SEA TEL MODEL
ST144-21 DUAL C/QUAD KU-BAND TVRO ANTENNA
Sea Tel Europe
Unit 1, Orion Industrial Centre
Wide Lane, Swaythling
Southampton, UK S0 18 2HJ
Tel: 44 (0)23 80 671155
Fax: 44 (0)23 80 671166
Web:
http://www.cobham.com/seatel
Document. No. 135635 Revision B

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  • Page 1 Southampton, UK S0 18 2HJ Fax: (925) 798-7986 Tel: 44 (0)23 80 671155 Web: http://www.cobham.com/seatel Fax: 44 (0)23 80 671166 Web: http://www.cobham.com/seatel Sea Tel Inc is also doing business as Cobham Antenna Systems August 2, 2012 Document. No. 135635 Revision B...
  • Page 2 All Rights Reserved. The information contained in this document is proprietary to Sea Tel, Inc.. This document may not be reproduced or distributed in any form without prior consent of Sea Tel, Inc. The information in this document is subject to change without notice. Copyright © 2010 Sea Tel, Inc is doing business as Cobham SATCOM.
  • Page 3 The Equipments Maker / Supplier have to declare if his equipment / equipments contain any of the hazardous material listed below with concentration and duly signed and stamped. Vessel Name/Hull Number/Shipyard: Equipment Details: All Sea Tel manufactured antenna systems. Supplier Details: Sea Tel, Inc 4030 Nelson Ave Concord, CA.
  • Page 4 Other Substances inherent in the machinery, equipment or fittings of supplied system Type Equipments/Components Location (If Applicable) Approximate contain such materials quantity/volume Lubricating Oil Hydraulic Oil Lead Acid Batteries Alcohol Methylated Spirits Epoxy Resins Mercury Radioactive Materials Other (Specify) Copyright © Sea Tel, Inc 2011 Document Number 136150 rev A...
  • Page 5 All of the plastics used on Sea Tel antenna systems are completely inert and pose no harm when in use or when scrapped. All of the lubricating oils used on Sea Tel antenna systems are completely inert and pose no harm when in use or when scrapped.

  • Page 7: Table Of Contents

    Table of Contents INTRODUCTION ......................................1-1 1.1.................................. 1-1 ENERAL ESCRIPTION OF SYSTEM 1.2........................................... 1-1 URPOSE 1.3......................................1-1 YSTEM OMPONENTS 1.4..................................1-2 NTENNA ONFIGURATION 1.5.................................... 1-3 NTENNA RBITRATOR 1.6..................................1-3 ENERAL SCOPE OF THIS MANUAL 1.7.
  • Page 8 Table of Contents 3.5.2. Install Antenna/Radome/Baseframe ..........................3-20 3.6.............................. 3-21 NSTALLING THE ELOW ECKS QUIPMENT 3.6.1. General Cautions & Warnings ............................... 3-21 3.6.2. Preparing BDE Location ................................3-21 3.6.3. Installing the Below Deck Equipment ..........................3-21 3.7............................3-21 ONNECTING THE ELOW ECKS...
  • Page 9 Table of Contents 9.1.2. Inclined Orbit Search Pattern ..............................9-2 9.1.3. No Gyro Search Pattern ................................9-3 9.2................................9-4 HANGING THE EARCH ARAMETERS 9.2.1. AUTO THRES ...................................... 9-4 9.2.2. EL STEP SIZE ..................................... 9-4 9.2.3. AZ STEP SIZE ....................................9-4 9.2.4.
  • Page 10 ERIES 13.9.1. To configure the PCU; ................................13-25 13.9.2. MODEL CONFIGURATION NUMBERS ......................... 13-25 13.10. A ................................13-26 NTENNA TOWING ROCEDURE 14. ST144-21 TECHNICAL SPECIFICATIONS ..........................14-1 14.1. 14400 A ..................................14-1 NTENNA EFLECTOR 14.2. F ......................................14-1 SSEMBLIES 14.2.1. TVRO-21 Dual C-Band / Quad Ku-Band Feed Assembly ..................14-1 14.3.

  • Page 11: Introduction

    ST144-21 C/Ku-Band TVRO Introduction Introduction 1.1. General Description of system Your system is a fully stabilized antenna that has been designed and manufactured so as to be inherently reliable, easy to maintain, and simple to operate. Except for start-ups, or when changing to operate with different transponders or satellites, the equipment essentially permits unattended operation.

  • Page 12: Dual Antenna Configuration

    Introduction ST144-21 C/Ku-Band TVRO Figure 1-1 TVRO Simplified Block Diagram 1.4. Dual Antenna Configuration Sometimes, due to very large blockage conditions, you may need to install a dual antenna configuration to provide uninterrupted services. Two full antenna systems are installed and the ACU control outputs are connected to an arbitrator switch panel which then is connected to the below decks equipment.

  • Page 13: Dual Antenna Arbitrator

    1.6. General scope of this manual This manual describes the Sea Tel Antenna (also called the Above Decks Equipment), its’ operation and installation. Refer to the manual provided with your Antenna Control Unit for its’ installation and operating instructions. 1.7.
  • Page 14 Introduction ST144-21 C/Ku-Band TVRO This Page Intentionally Left Blank...

  • Page 15: Site Survey

    ST144-21 C/Ku-Band TVRO Site Survey Site Survey The objective of the Site survey is to find the best place to mount the antenna & the below decks equipment, the length and routing of the cables and any other items or materials that are required to install the system and identify any other issues that must be resolved before or during the installation.

  • Page 16: Mounting Foundation

    The height of the pedestal should be kept as short as possible, taking into account recommendations given in other Sea Tel Guidelines. The minimum height of the pedestal above a flat deck or platform to allow access into the radome for maintenance should be 0.6 meters (24 inches).

  • Page 17: Mounting Height And Fore-Aft Location

    The effect of tangential acceleration is felt by the structure of the ADE before it truly affects the tracking accuracy. For instance, Sea Tel normally accepts that a tracking error of 0.1 degrees RMS at 0.5 G to be within acceptable error margins.

  • Page 18: Vertical Masts

    Site Survey ST144-21 C/Ku-Band TVRO Often the solution for providing the full azimuth/elevation range the antenna needs is to mount the ADE on the ship’s mast. Unfortunately, masts do not consider equipment masses in design and often have harmonic frequencies of their own.

  • Page 19: Girder Masts

    For every 100 Kilograms of ADE weight over 250 Kilograms, the depth of the platform stiffeners should be increased by 50 millimeters and thickness by 2 millimeters. Sea Tel does not have a recommended arrangement for a truss mast – the variability of truss mast designs means that each installation needs to be evaluated separately.

  • Page 20: Cables

    The ADE should be installed using good electrical practice. Sea Tel recommends referring to IEC 60092-352 for specific guidance in choosing cables and installing cables onboard a ship. Within these guidelines, Sea Tel will provide some very general information regarding the electrical installation.

  • Page 21: Acu Power Cable/Outlet

    ST144-21 C/Ku-Band TVRO Site Survey 2.8.4. ACU Power Cable/Outlet The AC power for the ACU and other below decks equipment is not required to be from a UPS (same one that supplies power to the ADE), but it is recommended.
  • Page 22 Site Survey ST144-21 C/Ku-Band TVRO This Page Intentionally Left Blank...

  • Page 23: Installation

    ST144-21 C/Ku-Band TVRO Installation Installation This section contains instructions for unpacking, final assembly and installation of the equipment. It is highly recommended that final assembly and installation of the Antenna system be performed by trained technicians. Read this complete section before starting.

  • Page 24: Site Selection Aboard Ship

    Installation ST144-21 C/Ku-Band TVRO 3.2. Site Selection Aboard Ship The radome assembly should be installed at a location aboard ship where: • The antenna has a clear line-of-sight to view as much of the sky (horizon to zenith at all bearings) as is practical.

  • Page 25: Installing The System Cables

    ST144-21 C/Ku-Band TVRO Installation ACU and the Terminal Mounting Strip. Refer to the vendor supplied manuals for installation of the other below decks equipments. Prepare other locations throughout ship for any other equipment which is not co-located with the ACU.
  • Page 26 Installation ST144-21 C/Ku-Band TVRO Place the radome base frame on temporary support blocks, or jack stands, at least 10 inches high. Bolt the eight 6 inch feet to the under side of the radome base frame using the hardware provided. Loosely...
  • Page 27 ST144-21 C/Ku-Band TVRO Installation Apply a good 3/8 inch bead of silicon sealant to seal the centerline of the two adjoined halves of the base pan to keep wind, water and dirt from getting into the radome from underneath. Install the Base Hatch and clamp the latches from the under-side.

  • Page 28: Sub-Assemble The 168" Radome Assembly

    Installation ST144-21 C/Ku-Band TVRO 3.4.3. Sub-assemble the 168” Radome Assembly Refer to the Radome Assembly drawing for your system and the procedure below. It is best to have at least TWO people sub-assembling the radome, one working from the inside and the other outside. Sub-assemble the sections of the radome on a clean, flat location that is free of rocks &...
  • Page 29 ST144-21 C/Ku-Band TVRO Installation Open each vertical seam wide enough to install a good bead of silicone caulk, apply loctite to and then firmly tighten all of the bolts in that seam (Smaller beads of caulking can be applied from outside and inside if you prefer).
  • Page 30 Installation ST144-21 C/Ku-Band TVRO To provide a clean caulked seam all around the panels: apply painters masking tape to the outside perimeter of each of the panels about ¼ “ from the top, bottom, left and right edges at each flange joint.
  • Page 31 ST144-21 C/Ku-Band TVRO Installation 12. Repeat caulking, closing and cleaning the vertical flanges until all of the lower panel seams are closed. 13. Remove the tape from the vertical seams. 14. The lower section of the radome is now complete.
  • Page 32 Installation ST144-21 C/Ku-Band TVRO 22. To provide a clean caulked seam all around the panels: apply painters masking tape to the outside perimeter of each of the panels about ¼ “ from the top, bottom, left and right edges at each flange joint.
  • Page 33 ST144-21 C/Ku-Band TVRO Installation 27. Apply a 3/8” layer of caulking to the under-side of the perimeter flange of radome cap. 28. Climb onto the upper panel assembly, have someone hand the cap to you and insert the cap into the top of the radome with a twisting rotation.
  • Page 34 Installation ST144-21 C/Ku-Band TVRO 34. Attach radome lifting brackets (PN 122848), or other lifting arrangement, around the bottom of the upper panel assembly. 35. Insert a 1” (or longer) bolt through a fender washer, down through the bottom flange of one of the upper...
  • Page 35 ST144-21 C/Ku-Band TVRO Installation 43. Clean off the excess caulking from the inside and outside of the radome base. 44. Remove the tape from the bottom edge of the outside of the riser panels. 45. Hoist the lower section of the radome and set it onto the top of the riser panels.

  • Page 36: Sub-Assemble The Antenna Pedestal

    Installation ST144-21 C/Ku-Band TVRO 3.4.4. Sub-assemble the Antenna Pedestal Refer to the General Assembly drawing for your system and the procedure below. NOTE: Unless otherwise indicated, all nuts and bolts should be assembled with Loctite 2760 or its equivalent. Install the Base Stand, or...
  • Page 37 ST144-21 C/Ku-Band TVRO Installation Tie the dish down with web straps to hold it at its lowest elevation. Tie the straps through the reflector mount brace and around the pedestal. Install the struts on the dish using the hardware provided...
  • Page 38 Installation ST144-21 C/Ku-Band TVRO 11. Use tie-wraps to attach the reflector harness and coaxes along the right feed strut and the flange bolts on the right rear of the dish (seen here in the foreground). 12. Attach the 15 pin connector...
  • Page 39 ST144-21 C/Ku-Band TVRO Installation 15. Hoist the Pedestal Assembly up and into the bottom half of the radome and install it onto the stand using the hardware provided. Apply loctite to and tighten the mount bolts. NOTE: The circuit breaker panel...

  • Page 40: Close The 168" Radome Assembly

    Installation ST144-21 C/Ku-Band TVRO 3.4.5. Close the 168” Radome Assembly Refer to the Radome Assembly drawing for your system and the procedure below. Lift Upper section up over the dish & feed assembly and set it down onto the lower section.

  • Page 41: Prepare The 168" Radome Ade For Lift

    ST144-21 C/Ku-Band TVRO Installation Use wedges to lift the upper panels off of the lower panels about ½ inch. Install a good bead of caulking between the bottom of the upper panels and the top of the lower panels, remove the wedges and radome lifting brackets, then firmly tighten all the bolts.

  • Page 42: Installing The Ade

    Installation ST144-21 C/Ku-Band TVRO Enter the ADE and stow the antenna pedestal using the Stow Kit (provided) and the instruction in the Maintenance section of the antenna manual. Attach eye-bolts or shackles (properly rated for the weight to be lifted) to four equidistant lifting point holes around the perimeter of the Base Frame.

  • Page 43: Installing The Below Decks Equipment

    Assure that the Gyro Compass output is turned OFF when handling and connecting wiring to the Terminal Mounting Strip. CAUTION - Allow only an authorized dealer to install or service the your Sea Tel System components. Unauthorized installation or service can be dangerous and may invalidate the warranty.

  • Page 44: 133Buradio Control Serial Cable

    Installation ST144-21 C/Ku-Band TVRO 3.7.4.2. ACU to Terminal Mounting Strip Connections Connect the TMS to the ACU. Connect the 25 pin ribbon cable from the Terminal Mounting Strip to J1 “Ships Gyro” DB25 on the rear panel of the ACU.

  • Page 45: Other Bde Connections

    Sea Tel recommends that separate, dedicated, AC Power be provided for the Marine Air Conditioner (Do NOT combine with the AC Power provided for the Antenna Pedestal and RF Equipment). This AC Power cable is routed into the Marine Air Conditioner and terminated to the AC terminals inside.

  • Page 46: Acu & Tms

    “SEA TEL – RCVR and SCPC VER 5.xx” followed by, “SEA TEL – IO MOD and COMMIF VER 1.xx” followed by, “SEA TEL – REMOTE and INITIALIZING”. After initialization, the bottom line of the remote display will display the antenna model number and the software version from the PCU.

  • Page 47: Fine Balance And Monitoring Motor Drive Torque

    ST144-21 C/Ku-Band TVRO Installation Assure that Antenna power is ON and that the antenna has completed initialization. At the ACU: From the ACU - REMOTE BALANCE parameter: Enable balance mode (refer to your ACU manual). The screen should now display “REMOTE BALANCE ON”.
  • Page 48 Installation ST144-21 C/Ku-Band TVRO • The Cross Level displayed above the reference line indicates that the CL axis is being driven CCW (Left in CL). Example: The antenna pictured in the screen capture below is imbalanced so that it is “Right Heavy”.

  • Page 49: Basic Setup Of The Acu

    ST144-21 C/Ku-Band TVRO Basic Setup of the ACU Basic Setup of the ACU 4.1. Operator Settings Refer to the Operation chapter of this manual to set the Ship information. Latitude and Longitude should automatically update when the GPS engine mounted on the antenna pedestal triangulates an accurate location, but you may enter this information manually to begin.

  • Page 50: Acu Factory Default Parameter Settings - Stxxx-21 Series Antennas

    Basic Setup of the ACU ST144-21 C/Ku-Band TVRO 4.4. ACU Factory Default Parameter Settings – STxxx-21 Series Antennas The following table shows the factory default parameters for the ACU interfaced to a ST-21 Series Antenna. You may need to optimize some of these parameters. Refer to the individual parameter setting information in the Setup section of your ACU manual.

  • Page 51: Setup - Ships Gyro Compass

    ST144-21 C/Ku-Band TVRO Setup – Ships Gyro Compass Setup – Ships Gyro Compass The Ships Gyro Compass connection provides true heading (heading of the ship relative to true North) input to the system. This allows the ACU to target the antenna to a “true” Azimuth position to acquire any desired satellite.
  • Page 52 Setup – Ships Gyro Compass ST144-21 C/Ku-Band TVRO This Page Intentionally Left Blank...

  • Page 53: Determine Internal Tracking Receiver Settings

    ST144-21 C/Ku-Band TVRO Determine Internal Tracking Receiver Settings Determine Internal Tracking Receiver Settings This lesson contains some general information on how to determine, obtain, and enter the antenna control units tracking receiver settings. 6.1. IF Tracking Frequency The IF Tracking parameter is a calculated value entered into the ACU’s FREQ Sub-Menu. The value itself is calculated by using the formula RF- LO = IF.

  • Page 54: Tvro Applications

    The Tone state entered into the ACU will be toggled either on or off. Although there are many possibilities of uses of a 22 KHz tone, in a Sea Tel TVRO antenna system it is primarily used for below decks band selection (Tone On = Ku Hi-Band and Tone Off = Ku Lo-Band) and is based on the Downlink RF value from the satellite.
  • Page 55 ST144-21 C/Ku-Band TVRO Determine Internal Tracking Receiver Settings 6.6. The Network Identification parameter entered into the ACU is a hexadecimal value based on the Downlink RF from the satellite. When using a Public Satellite Reference Site such as Lyngsat.com or Satellite Reference Software such as WWW.Lyngsat.com, the NID values are presented in decimal format and thus a conversion to hexadecimal format is...
  • Page 56 Determine Internal Tracking Receiver Settings ST144-21 C/Ku-Band TVRO This Page Intentionally Left Blank...

  • Page 57: Setup - Home Flag Offset

    ST144-21 C/Ku-Band TVRO Setup – Home Flag Offset Setup – Home Flag Offset Home Flag Offset is used to calibrate the relative azimuth value of the antenna to the bow line of the ship. This assures that the encoder input increments/decrements from this initialization value so that the encoder does not have to be precision aligned.

  • Page 58: You Observe "Home" Pointing Is Left Of The Bow-Line

    Setup – Home Flag Offset ST144-21 C/Ku-Band TVRO If AZ TRIM was a plus value: HFO = (TRIM / 360) x 255 Example: AZ TRIM was 0200 (plus 20 degrees). HFO = (20/360) x 255 = (0.0556) x 255 = 14.16 round off to 14. Set, and Save, HFO to 014 using the “To Enter the HFO value”...

  • Page 59: To Enter The Hfo Value In The Dac_2202

    ST144-21 C/Ku-Band TVRO Setup – Home Flag Offset “home” was to the right of bow) this difference of 09.0 to the bow line position 000.0. Therefore “home” should be 90.0 Relative. I now calculate the HFO = = ((90.0) / 360)) x 255 = 0.25 x 255 = 63.75 which I round off to 64.
  • Page 60 Setup – Home Flag Offset ST144-21 C/Ku-Band TVRO This Page Intentionally Left Blank...

  • Page 61: Setup - Targeting

    ST144-21 C/Ku-Band TVRO Setup – Targeting Setup – Targeting Optimizing the targeting of the antenna to land on or near a desired satellite (within +/-1 degree) is outlined below. 8.1. AUTO TRIM The Auto Trim function will automatically calculate and set the required Azimuth and Elevation trim offset parameters required to properly calibrate the antennas display to the mechanical angle of the antenna itself, while peaked ON satellite.

  • Page 62: El Trim

    Setup – Targeting ST144-21 C/Ku-Band TVRO 8.3. EL TRIM Elevation trim offset parameter is entered in tenths of degrees. Adjusts display to correct for antenna alignment errors or imbalances in the antenna system. Increase number to increase display. Refer to “Optimizing Targeting” in the Setup section of your antenna manual.

  • Page 63: Setup - Searching

    ST144-21 C/Ku-Band TVRO Setup – Searching Setup – Searching 9.1. Searching Operation The ACU will initiate an automated search pattern after AGC falls below the current Threshold setting (indicates that satellite signal has been lost). The SEARCH DELAY parameter sets the amount of delay, in seconds, that the ACU will wait after AGC has fallen below the threshold value before it starts a search.

  • Page 64: Inclined Orbit Search Pattern

    Setup – Searching ST144-21 C/Ku-Band TVRO 9.1.2. Inclined Orbit Search Pattern Some older satellites, in order to save fuel to keep them exactly positioned over the Equator, are in an inclined geosynchronous orbit. The satellite remains geosynchronous but is no longer geostationary. From a fixed observation point on Earth, it would appear to trace out a figure-eight with lobes oriented north- southward once every twenty-four hours.

  • Page 65: No Gyro Search Pattern

    ST144-21 C/Ku-Band TVRO Setup – Searching 9.1.3. No Gyro Search Pattern If the ship does not have a gyro compass to use as a heading input to the Antenna Control Unit, you may manually key in the actual heading of the vessel and then re-target the desired satellite, every time you need to re-target a satellite, or configure the ACU to do a “No Gyro Search Pattern”.

  • Page 66: Changing The Search Parameters

    Setup – Searching ST144-21 C/Ku-Band TVRO 9.2. Changing the Search Parameters The information above described what some of these parameters need to be set to for a specific search pattern. Below are some additional pieces of information on the other parameters and the steps to change any one of these parameters.

  • Page 67: Search Inc

    ST144-21 C/Ku-Band TVRO Setup – Searching 9.2.5. SEARCH INC Sets size of search pattern increment. Units are in pedestal step resolution (24 steps per degree). The suggested setting is equal to the full 3dB beamwidth of your antenna. Default value is 30 these systems.
  • Page 68 Setup – Searching ST144-21 C/Ku-Band TVRO This Page Intentionally Left Blank...

  • Page 69: Setup - Blockage & Rf Radiation Hazard Zones

    BLOCKED condition to test SW2 logic output. When used as simple “BLOCKED” logic output for a single Sea Tel antenna, this output could be used to light a remote LED and/or sound a buzzer to alert someone that the antenna is blocked, and therefore signal is lost.
  • Page 70 ST144-21 C/Ku-Band TVRO When used for “FCC TX Mute” logic output for a single Sea Tel TXRX antenna, this output is used to suppress RF transmissions whenever the antenna is mis-pointed 0.5 degrees or more, is blocked, searching, targeting or unwrapping.
  • Page 71 0000. If your ACU software includes 5 volt polarization you will not see these AZ & EL LIMIT parameters. EXAMPLE 3 - One blockage Zone: A ship has a Sea Tel antenna mounted on the center line of the ship. A mast is forward and an engine exhaust stack is aft.
  • Page 72 0000. If your ACU software includes 5 volt polarization you will not see these AZ & EL LIMIT parameters. EXAMPLE 4 - Overlaid Blockage Zones: A ship has a Sea Tel antenna mounted on the center line of the ship. A mast mounted on top of a deckhouse (like the picture below) is forward and an engine exhaust stack, also on a deckhouse, is aft.

  • Page 73: Setup

    ST144-21 C/Ku-Band TVRO Setup Setup Below are basic steps to guide you in setting up the ACU for your specific antenna pedestal. Assure that the Antenna Pedestal (ADE) has been properly installed before proceeding. Refer to the Setup section of you ACU manual for additional parameter setting details.

  • Page 74: Tx Polarity Setup

    Setup ST144-21 C/Ku-Band TVRO 11.5. TX Polarity Setup With the feed in the center of its polarization adjustment range, observe the transmit port polarity (vector across the short dimension of the transmit wave-guide). If the transmit polarity in the center of the travel range is vertical, use the following entries:...

  • Page 75: Functional Testing

    12.1. ACU / Antenna System Check Press RESET on the ACU front panel to initialize the system. Verify the display shows "SEA TEL INC - MASTER" and the ACU software version number. Wait 10 seconds for the display to change to "SEA TEL INC - REMOTE"...

  • Page 76: Four Quadrant Tracking Test

    • When used as simple “BLOCKED” logic output for a single Sea Tel antenna, this output could be used to light a remote LED and/or sound a buzzer to alert someone that the antenna is blocked, and signal is lost.

  • Page 77: Maintenance And Troubleshooting

    Power Supply. 13.1. Warranty Information Sea Tel Inc. supports its antenna systems with a TWO YEAR warranty on parts and ONE YEAR warranty on labor. What’s Covered by the Limited Warranty? The Sea Tel Limited Warranty is applicable for parts and labor coverage to the complete antenna system, including all above-decks equipment (radome, pedestal, antenna, motors, electronics, wiring, etc.) and the Antenna Control Unit...

  • Page 78: Azimuth & Elevation Drive

    Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO 13.2.4. Azimuth & Elevation Drive Refer to the Azimuth & Elevation Drive check procedure in the Functional Testing section of this manual. 13.2.5. Test Tracking Refer to the four quadrant Tracking check procedure in the Functional Testing section of this manual.

  • Page 79: 400Mhz Modem Configuration

    ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting 13.3. 400MHz Modem Configuration The 400MHz FSK modem PCB has a jumper block (located component side of PCB) that is used to configure it for Above Decks or Below Decks operation as well as to configure its’ serial communications protocol (RS232, RS422, or RS485).

  • Page 80: Mh Zled Indicators

    Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO Below 2 Wire RS485 Decks (Half Duplex) 9-10 13.4. 400 MHz LED indicators For diagnostic purposes, the 400MHz FSK Modem Assemblies have an LED Indicator (located to the on the bottom left hand side of the Enclosure for BDE modems and directly underneath the Rotary Joint port on the 09 Series PCU). By observing the amount of amber colored flashes during power up, the modems configuration may be established.

  • Page 81: Radio M&C

    ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting 13.5.2. Radio M&C The RS-232, RS-422, or RS-485 (depending on configuration) Radio M&C signals pass from the BDE computer through the RF M&C port of the base modem and are modulated and demodulated. These M&C signals are diplexed with the Pedestal M&C signals before passing through to the above decks modem.

  • Page 82: Troubleshooting 400Mhz Modem Communication Faults

    Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO 13.6. Troubleshooting 400MHz Modem Communication Faults 13.6.1. 400MHz Modem Queries: The 400MHz modem assemblies facilitates the use of line-based commands via the ACU’s front panel, its’ internal HTML page, or using remote diagnostic software such as DacRemP or ProgTerm. The use of these commands will aid in troubleshooting communication failures between the above decks and below decks modems.
  • Page 83 ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting 13.6.2.1. Using the ACU Front Panel Using the ACU’s Front Panel, navigate through the Setup menu to access the Remote Command Sub-Menu. Enter in the desired Modem Query then press the ENTER key. Observe and/or Record the displayed response.

  • Page 84: Isolating A 400 Mhz Modem Fault Procedure

    Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO Observe and/or Record the displayed response. Repeat as required until all desired modem queries are noted. 13.6.2.4. Using ProgTerm Open up ProgTerm and select the Tools Menu. Select “Modem Tools”. Select the desired modem location.
  • Page 85 ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting Serial Loopback Connector Build a Loop Back Test Adapter by Shorting Pin 1 to Pin 8 and Shorting Pin 2 to Pin 3 on a female DB9(S) connector. Spectrum Analyzer Capable of handling 100kHz up to 3Ghz & up to 48VDC SMA “T”...
  • Page 86 Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO • Modem Configuration Verify BDE modem and ADE modem are properly configured (jumper block settings). • ACU to BDE modem interface cable failure Verify harness continuity. Repair or replace as required • ACU Antenna Port Failure Install an RS232 Loopback connector** on Antenna Port of the ACU.

  • Page 87: Theory Of Stabilization Operation

    ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting BDE Receive or ADE Transmit (RF M&C): 13.6.3.1.8. • BDE Modem Rx Port Failure (Not receiving at 460.0MHz) or • ADE Modem Tx Port Failure (Not transmitting at 460.0MHz) Install Spectrum Analyzer in line with the Rx IF coax path.

  • Page 88: Antenna Initialization (St-21 Series)

    Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO 13.7.2.1. Channel 1 (White) HORIZ C/Ku-low coax has +18 VDC Voltage supplied by Matrix Switch plus C-Band IF (950- 1450MHz) OR Ku-Band IF (950-1950MHz) “Band Selected” output from the C/Ku-low Switch. Horizontal C/Ku-low band switched output passes through this channel of the 75 ohm coaxial rotary joint, to the base of the radome, down the ADE-BDE coax to the C/Ku HORIZ LO input of the four port Matrix Switch.

  • Page 89: Troubleshooting Using Dacremp

    13.7.4. Troubleshooting using DacRemP While troubleshooting a Sea Tel 3-Axis Antenna System, you must classify the fault you are dealing with as a failure within one of 3 major system functions, Targeting, Stabilization, and Tracking. Should there be a failure with any one of these functions, your system will not operate properly. A few simple checks may help determine which fault (if any) that you are dealing with.

  • Page 90: Antenna Loop Error Monitoring

    Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO 13.7.5. Antenna Loop Error Monitoring The DacRemP DISPIVC graph chart provides a means for monitoring the accumulated velocity errors of the antenna for diagnostic purposes. If this error is excessive, it indicates external forces are acting on the antenna.

  • Page 91: Reference Sensor Monitoring

    ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting Elevation Axis physically moved CW. (reflector slightly pushed up) and then physically moved CCW. (reflector slightly pushed down.) At the end of chart recording shows • DishScan® Drive turned Off, notice the lack of accumulated IVC errors.

  • Page 92: Open Loop Rate Sensor Monitoring

    Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO • The Level tilt display should plot on the red reference line when the level cage is level, referenced to the horizon. It should decrease (plots below red line) when the antenna is tilted forward (EL down) and increase (plots above red line) when tilted back (EL up).
  • Page 93 ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting • The Cross Level display should decrease (plots below red line) as the antenna is tilted to the left and increase (plots above red line) as the antenna tilted to the right. • The Level display should decrease (plots below red line) as the antenna is tilted forward and increase (plots above red line) as the antenna is tilted back.

  • Page 94: Open Loop Motor Test

    Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO 13.7.8. Open Loop Motor Test The DacRemP Comm Diagnostics Window provides a means to enter in Remote Commands for driving each individual torque motor to test that motors functionality. By driving each axis and observing the resulting motion of the antenna, a coarse operational status of the motor and motor driver may be established.

  • Page 95: To Read/Decode An Acu Error Code 0008 (Pedestal Function Error)

    ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting • Frequent or constant ACU Error Code 0001 (Gyro Compass has failed). • Using an uncompensated Flux Gate Compass. To view, or change, the Satellite Reference Mode status, select the SAT REF remote parameter: Press the UP arrow and then press the ENTER key to turn Satellite Reference Mode ON.
  • Page 96 Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO Right mouse click on the icon. This will display a list box with the status of the above decks pedestal filtered into 3 sections. Items preceded with a check marks indicate a flagged status. See matrix below for further information on each state.

  • Page 97: Remote Gps Lat/Lon Position

    ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting PCU Error Status (Word 3) Sensor Limit **Not a valid state** Stability Limit Indicates that the above decks equipment is mis-pointed from its intended target by more than 0.5°. (FCC Tx Mute Compliance) AZ Reference Error Indicates a failure to integrate one the reference inputs within the Azimuth Stabilization Loop.

  • Page 98: Balancing The Antenna

    Furuno default value is in Japan at 34.4N 135.2E (@3444,N,13521,E,,_). After acquiring a good fix at Sea Tel the string is @3800,N,12202,W,A^ for our 38N 122W Latitude and Longitude position. The status character tells you the status of the GPS.

  • Page 99: Remote Tilt

    ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting The “REMOTE BALANCE” parameter (located at the end of the Remote Parameters after REMOTE TILT) of the ACU. When enabled, Remote Balance Mode temporarily turns DishScan®, Azimuth, Elevation and Cross- Level drive OFF. This function is required when trying to balance antenna systems that have a built-in brakes on the elevation and cross-level motors.
  • Page 100 Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO Using DacRemP • Click on the icon in the Comm Diagnostics window. (Verify that DishScan is turned off by clicking the Error LED on main display panel, there should be a check mark next to Conscan/DishScan) Step 2: At Antenna, If not already installed, place a circular level bubble on top lid of level cage.

  • Page 101: To Reset/Reinitialize The Antenna

    ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting 13.8.3. To Reset/Reinitialize the Antenna: Pressing Reset on the ACU front panel does NOT cause a reset of the above decks equipment. To Re-initialize the antenna from the REMOTE COMMAND window on the ACU: Using the LEFT/RIGHT and UP/DOWN arrow keys set the Remote Command value to "^0090"...

  • Page 102: Antenna Stowing Procedure

    The normal operating condition for the Sea Tel Antenna system is to remain powered up at all times. This ensures that the antenna remains actively stabilized to prevent physical damage to the antenna pedestal and reduce condensation and moisture in the radome to prevent corrosion.
  • Page 103 ST144-21 C/Ku-Band TVRO Maintenance and Troubleshooting Hook the other end hook of the nylon strap to the pedestal- mounting frame as shown in Figure 3. Use the ratchet of the strap to tighten nylon straps. As the straps are tightened, observe the vertical isolation canister assembly as shown in Figure 4.
  • Page 104 Maintenance and Troubleshooting ST144-21 C/Ku-Band TVRO This Page Intentionally Left Blank 13-28...

  • Page 105: St144-21 Technical Specifications

    ST144-21 C/Ku-Band TVRO ST144-21 Technical Specifications ST144-21 Technical Specifications The technical specifications for your Series Above Decks Equipment subsystems are listed below: Refer to your ACU manual for its’ Specifications. 14.1. 14400 Antenna Reflector Type: Fiberglass 4-Section solid parabola Diameter (D): 3.6 M (141 in.)

  • Page 106: Series 00 Stabilized Antenna Pedestal Assembly

    ST144-21 Technical Specifications ST144-21 C/Ku-Band TVRO 14.3. Series 00 Stabilized Antenna Pedestal Assembly Type: Three-axis (Level, Cross Level and Azimuth) Stabilization: Torque Mode Servo Stab Accuracy: 0.2 degrees MAX, 0.1 degrees RMS in presence of specified ship motions (see below).

  • Page 107: Mk 2 Pedestal Control Unit (Pcu)

    ST144-21 C/Ku-Band TVRO ST144-21 Technical Specifications 14.4. MK 2 Pedestal Control Unit (PCU) The PCU Assembly contains 3 Printed Circuit Boards (PCBs). Connectors AC Power 100-240 VAC, 2A-1A Mini USB GPS Input RJ-11 connector Motor Control DA-15S connector 70/140 MHz...

  • Page 108: Mh Z Base & Pedestal Unlimited Azimuth Modems (3 Channel )

    Withstand relative average winds up to 100 MPH from any direction. Ingress Protection Rating All Sea Tel radomes have an IP rating of 56 NOTE: Radome panels can absorb up to 3-5% moisture by weight. Soaked panels will also have higher attenuation.

  • Page 109: Environmental Conditions (Ade)

    Due to the dB losses across the length of the RF coaxes at L-Band, Sea Tel recommends the following 75 ohm coax, or Heliax, cable types (and their equivalent conductor size) for our standard pedestal installations:...

  • Page 110: Gyro Compass Interface Cable (Customer Furnished)

    ST144-21 Technical Specifications ST144-21 C/Ku-Band TVRO 14.9.4. Gyro Compass Interface Cable (Customer Furnished) Type: Multi-conductor, Shielded Number of wires 4 Conductors for Step-By-Step Gyro, 5 Conductors for Synchro Wire Gauge: see Multi-conductor Cables spec above Insulation: 600 VAC 14.9.5. Fiber Optic Transmitter (CFE Optional)

  • Page 111: Model St144-21 Drawings

    15.1. Model ST144-21 Specific Drawings Drawing Title 135627-1_B3 System, Model ST144-21 15-3 135626-1_A1 System Block Diagram – Model ST144-21 15-5 135628-1_A2 General Assembly – Model ST144-21 15-8 135625_A1 Antenna System Schematic – Model ST144-21 15-10 135633-1_B...
  • Page 112 Model ST144-21 Drawings ST144-21 C/Ku-Band TVRO This Page Intentionally Left Blank 15-2...
  • Page 113 SINGLE LEVEL MFG BILL OF MATERIAL FIND QTY PART NO REV DESCRIPTION REFERENCE DESIGNATOR 1 EA 135628-1 A2 GENERAL ASS'Y, ST144-21 1 EA 111849-9 RADOME ASS'Y, 168 INCH, WHITE/FOAM/SI 1 EA 115912-1 G BASE FRAME ASS'Y, 110 IN, W/PAN ACCES 1 EA 125411-2...
  • Page 114 Sea Tel - Strictly Confidential & Proprietary. Do Not Copy, Distribute or Disclose Without Prior 1:21 135627 Written Approval From Sea Tel. ST144-21 3rd ANGLE 1 OF 1 Copyright c Sea Tel, Inc 2011 - Unpublished Work FIRST USED: SHEET NUMBER PROJECTION...
  • Page 115 FIND QTY PART NO REV DESCRIPTION REFERENCE DESIGNATOR 1 EA 135628-1 A2 GENERAL ASS'Y, ST144-21 1 EA 128268-3 D ANTENNA ASS'Y, 3.6 M, DUAL C / QUAD K 1 EA 135631-1 FEED ASS'Y, DUAL C, QUAD KU 2 EA 134164-1...
  • Page 116 1 EA 116298-1 G INTERFACE HARNESS ASS'Y, SINGLE MODEM 1 EA 120643-25 CABLE ASS'Y, RS232, 9-WIRE, STRAIGHT, 1 EA 119479-10 B1 CABLE ASS'Y, CAT5 JUMPER, 10 FT. SYSTEM BLOCK DIAGRAM, ST144-21 PROD FAMILY EFF. DATE DRAWING SHT 2 OF 8/2/2012...

  • Page 118: General Drawings

    A2 ELECT. EQUIP. FRAME ASS'Y, ST144 TVRO 1 EA 128268-3 D ANTENNA ASS'Y, 3.6 M, DUAL C / QUAD K 1 EA 135630-1 BALANCE WEIGHT KIT, ST144-21 1 EA 121655-1 H11 LABELS INSTALLATION, XX97, 9711, STXX 1 EA 123530-7 GROUND BONDING KIT, STXXX, TVRO...
  • Page 119 Sea Tel - Strictly Confidential & Proprietary. Do Not Copy, Distribute or Disclose Without Prior 1:16 135628 Written Approval From Sea Tel. ST144-21 3rd ANGLE 1 OF 1 Copyright c Sea Tel, Inc 2011 - Unpublished Work FIRST USED: SHEET NUMBER PROJECTION...
  • Page 121 SINGLE LEVEL MFG BILL OF MATERIAL FIND QTY PART NO REV DESCRIPTION REFERENCE DESIGNATOR 20 IN 113343-076 WIRE, 22G, COPPER STRAND, BLU, UL1061 214 IN 113343-074 WIRE, 22G, COPPER STRAND, YEL, UL1061 214 IN 113343-072 WIRE, 22G, COPPER STRAND, RED, UL1061 20 IN 113343-0796 WIRE, 22G, COPPER STRAND, WHT/BLU, UL 214 IN 113343-071...
  • Page 123 SINGLE LEVEL MFG BILL OF MATERIAL FIND QTY PART NO REV DESCRIPTION REFERENCE DESIGNATOR 1 EA 122296 REFLECTOR, 3.6M., FOUR PANEL 4 EA 115446-9 Q3 FEED STRUT ASS'Y, 65.00 IN 1 EA 135631-1 FEED ASS'Y, DUAL C, QUAD KU 1 EA 135633-1 HARNESS ASS'Y, REFLECTOR, ST144 1 EA 128254-18 HARNESS ASS'Y, 6 CH, RG-6, F(M) TO F(...
  • Page 126 SINGLE LEVEL MFG BILL OF MATERIAL FIND QTY PART NO REV DESCRIPTION REFERENCE DESIGNATOR 1 EA 116286-5 OMT, DUAL BAND, 4-PORT 2 EA 134164-1 LNB, C-BAND, DRO, 8225RF 1 EA 123648-1 D SCALAR PLATE ASS'Y, C/KU-BAND, RX ONL 1 EA 132463-1 LNBF, QUAD, KU, INVERTO, MODIFIED 1 EA 113648-1 FEED ADAPTER PLATE...
  • Page 127 Sea Tel - Strictly Confidential & Proprietary. Do Not Copy, Distribute or Disclose Without Prior 135631 Written Approval From Sea Tel. 14400MK2-21 3rd ANGLE 1 OF 1 Copyright c Sea Tel, Inc 2011 - Unpublished Work FIRST USED: SHEET NUMBER PROJECTION...
  • Page 128 SINGLE LEVEL MFG BILL OF MATERIAL FIND QTY PART NO REV DESCRIPTION REFERENCE DESIGNATOR 1 EA 131057-3 G ENCLOSURE ASS'Y, PCU, 09G2, 3 CH, 422 1 EA 134130 A1 MOUNTING PLATE, TVRO SWITCH 1 EA 128204-1 D RF SWITCH ASSEMBLY 1 EA 131227-1 ENCLOSURE ASS'Y, MOTOR DRIVER, 09G2 4 EA 135639...
  • Page 129 Do Not Copy, Distribute or Disclose Without Prior 1:10 135632 DETAIL A Written Approval From Sea Tel. SCALE 1 : 2 14400MK2-21 3rd ANGLE 1 OF 1 Copyright c Sea Tel, Inc 2011 - Unpublished Work FIRST USED: SHEET NUMBER PROJECTION...
  • Page 130 SCREW, HEX HD, 1/2-13 x 1-3/4, S.S. 4 EA 114592-726 STUD, FULLY THREADED, 1/2-13 x 3-1/2, 12 EA 114580-033 WASHER, FLAT, 1/2, S.S. 4 EA 114583-033 NUT, HEX, 1/2-13, S.S. BALANCE WEIGHT KIT, ST144-21 PROD FAMILY EFF. DATE DRAWING SHT 1 OF COMMON 8/2/2012...
  • Page 131 Sea Tel - Strictly Confidential & Proprietary. SCALE 1 : 6 Do Not Copy, Distribute or Disclose Without Prior 1:12 135630 Written Approval From Sea Tel. ST144-21 3rd ANGLE 1 OF 1 Copyright c Sea Tel, Inc 2011 - Unpublished Work FIRST USED: SHEET NUMBER PROJECTION...
  • Page 132 SINGLE LEVEL MFG BILL OF MATERIAL FIND QTY PART NO REV DESCRIPTION REFERENCE DESIGNATOR 1 EA 115915-9 RADOME FAB ASS'Y, 168 INCH, WHT/SIDE/ 1 EA 124818-4 HARDWARE KIT, MULTI-PANEL RADOME, 168 , 24 EA 117762-1 SILICONE ADHESIVE, WHT RTV 122, 10.1 NOT SHOWN , RADOME ASS'Y, 168 INCH, WHITE/FOAM/SIDE PROD FAMILY...
  • Page 133 SEE DETAIL A HORIZONTAL EDGES OF ALL PANELS, RADOME CAP, AND BASE PAN UNDER PANELS. APPLY ADHESIVE PER SEA TEL SPEC. 121730 TO ALL THREADED FASTENERS AT TIME OF FINAL ASSEMBLY AND TORQUE TO SEA TEL SPEC. 122305. USE DRAWING IN CONJUNCTION WITH P/N: 124818-4.
  • Page 134 RISER LOWER PANEL 48X 51 52 BASE FRAME ASS'Y BASE PAN FAB DETAIL B DETAIL A 50 52 P/N: 131731-2 KIT, RADOME PANEL TO BASE FRAME, 110 IN RISER P/N: 131730-4 KIT, RADOME PANELS, 168 IN 50 52 UPPER PANEL 176X 50 52 LOWER PANEL...
  • Page 135 SINGLE LEVEL MFG BILL OF MATERIAL FIND QTY PART NO REV DESCRIPTION REFERENCE DESIGNATOR 1 EA 111811-2 N BASE FRAME WELDMENT, STEEL PL C2 Base&Refl_Crate 1 EA 111811-2 N BASE FRAME WELDMENT, STEEL PL C4 Base_Frame_Crate 1 EA 111811-2 N BASE FRAME WELDMENT, STEEL PL C2 Base&Refl_Crate 2 EA 111812-1 PLATE, SPLICE, STEEL...
  • Page 136 Sea Tel - Strictly Confidential & Proprietary. Do Not Copy, Distribute or Disclose Without Prior 1:18 115912 BASE STANDS CONFIGURATIONS Written Approval From Sea Tel. 3rd ANGLE 1 OF 2 Copyright c Sea Tel, Inc 2011 - Unpublished Work FIRST USED: SHEET NUMBER PROJECTION...
  • Page 137 80 81 82 83 71 72 73 74 SPIDER MOUNTING BASE 70 72 73 74 14600 BASE SPACER BASE STAND BASE CROSS SIZE SCALE: DRAWING NUMBER 1:20 115912 2 OF 2 SHEET NUMBER...
  • Page 141 SINGLE LEVEL MFG BILL OF MATERIAL FIND QTY PART NO REV DESCRIPTION REFERENCE DESIGNATOR 1 EA 116880 G PANEL MACHINING, RACK, BASE MUX 1 EA 130854-2 MODEM ASS'Y, 400MHZ FSK, 4CH,BDE, RS 1 EA 118429 O BRACKET, CONNECTOR 1 EA 128001-8BLU A2 CABLE ASS'Y, RG-179 COAX, F(M) TO SMA 5 EA 114178 O ADAPTER, F(F)-F(F) (BULLET), 1.10 IN...
  • Page 142 Sea Tel - Strictly Confidential & Proprietary. Do Not Copy, Distribute or Disclose Without Prior 1:1.5 131857 Written Approval From Sea Tel. 14400B-21 3rd ANGLE 1 OF 1 Copyright c Sea Tel, Inc 2011 - Unpublished Work FIRST USED: SHEET NUMBER PROJECTION...

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