99-141156-C_Installation Manual_Sea_Tel_TVHD.pdf

Sea Tel, Inc.

(trading as Cobham SATCOM) 4030 Nelson Avenue Concord, CA 94520 Tel: +1 (925) 798-7979 Fax: +1 (925) 798-7986

Thrane & Thrane A/S (trading as Cobham SATCOM) Lundtoftegaardsvej 93 D, 2800 Kgs.

Lyngby, Denmark Tel: +45 3955 8800 Fax: +45 3955 8888

Web: http://www.cobham.com/satcom Email: satcom.ohc@cobham.com February 17, 2016 Document. No. 99-141156-C

Sea Tel TVHD Antenna Systems Installation manual http://www.cobham.com/satcom mailto:satcom.ohc@cobham.com ii

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

These commodities, technology or software were exported from the United States in accordance with the Export Administration Regulations. Diversion contrary to U.S. law is prohibited.

Sea Tel is an ISO 9001:2008 registered company. Certificate Number 13690 originally issued March 14, 2011 and was renewed/reissued on March 10, 2014.

R&TTE

CE

The Sea Tel TV & TVHD Maritime Satellite Earth Station complies with the requirements of directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on Radio equipment and Telecommunication Terminal Equipment. A copy of the R&TTE Declaration of Conformity for this equipment is contained in this manual.

Copyright Notice

Copyright © 2015 Sea Tel Inc 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 written consent of Sea Tel, Inc.

The information in this document is subject to change without notice. Sea Tel Inc, is also doing business as Cobham SATCOM – Maritime.

iii

Revision History

REV ECO# Date Description By

A N/A January 14, 2015 Production Release MDN

B N/A May 4, 2015 Updated Position Antenna page setup text and added safety information and specifications chapter.

MDN

C N/A February 17, 2016 Update all text & drawings. MDN

Sea Tel, Inc., doing business as Cobham SATCOM

Sea Tel Inc.

4030 Nelson Ave., Concord California, 94520, USA T: +1 (925) 798-7979 F: +1 (925) 798-7986

R&TTE Declaration of Conformity Doc Number 99-144908-A Revision A

Sea Tel Inc. declares under our sole responsibility that the products identified below are in conformity with the requirements of:

DIRECTIVE 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on Radio equipment and Telecommunication Terminal Equipment and the mutual recognition of their conformity.

Product Names: Sea Tel 80 TV, 0.8m Ku TVRO Maritime Satellite Earth Station Sea Tel 100 TV, 1.0m Ku TVRO Maritime Satellite Earth Station Sea Tel 120 TV, 1.2m Ku TVRO Maritime Satellite Earth Station Sea Tel 100 TVHD, 1.0m Ku/Ka TVRO Maritime Satellite Earth Station Sea Tel 120 TVHD, 1.2m Ku/Ka TVRO Maritime Satellite Earth Station

These products have been assessed to Conformity Procedures, Annex IV, of the above Directive by application of the following standard(s):

EMC:

Marine Navigational and Radio Communication Equipment and Systems – General Requirements: IEC EN 60945:1997

Safety:

Safety of information technology equipment: IEC EN 60950-1:2001 (1st Edition)

Certificates of Assessment were completed and are on file at BACL Labs, Santa Clara, CA.

31-Dec-2014

Peter Blaney, Chief Engineer Cobham Satcom Sea Tel Products Concord, CA

Table of Contents v

1. SAFETY ............................................................................................................................................................................................................... 1-1

2. SITE SURVEY .................................................................................................................................................................................................. 2-1

2.1. SITE SELECTION ABOARD THE SHIP .......................................................................................................................................................... 2-1

2.2. ANTENNA SHADOWING (BLOCKAGE) ......................................................................................................................................................... 2-1

2.3. MOUNTING FOUNDATION ........................................................................................................................................................................... 2-2

2.3.1. Mounting on Deck or Deckhouse ...................................................................................................................................... 2-2

2.3.2. ADE Mounting Considerations ........................................................................................................................................... 2-2

2.3.3. Sizing of the support pedestal ............................................................................................................................................ 2-2

2.4. MOUNTING HEIGHT ...................................................................................................................................................................................... 2-3

2.5. MAST CONFIGURATIONS ............................................................................................................................................................................. 2-3

2.5.1. Vertical Masts .............................................................................................................................................................................. 2-3

2.5.2. Raked Masts .................................................................................................................................................................................. 2-4

2.5.3. Girder Masts ................................................................................................................................................................................. 2-4

2.5.4. Truss Mast ..................................................................................................................................................................................... 2-4

2.6. SAFE ACCESS TO THE ADE .......................................................................................................................................................................... 2-5

2.7. BELOW DECKS EQUIPMENT LOCATION ..................................................................................................................................................... 2-5

2.8. CABLES ............................................................................................................................................................................................................. 2-5

2.8.1. ADE/BDE Coaxial Cables ........................................................................................................................................................ 2-5

2.8.2. ACU Power Cable/Outlet ........................................................................................................................................................ 2-6

2.8.3. Gyro Compass Cable ................................................................................................................................................................ 2-6

2.9. GROUNDING .................................................................................................................................................................................................... 2-6

3. INSTALLATION ............................................................................................................................................................................................. 3-1

3.1. UNPACKING AND INSPECTION .................................................................................................................................................................... 3-1

3.2. ASSEMBLY NOTES AND WARNINGS ........................................................................................................................................................... 3-1

3.3. ADE INSTALLATION ...................................................................................................................................................................................... 3-2

3.3.1. ADE Mounting Considerations ........................................................................................................................................... 3-2

3.3.2. Open the System Crate .......................................................................................................................................................... 3-2

3.3.3. Prepare the Radome Assembly .......................................................................................................................................... 3-3

3.3.4. Installing the Radome Assembly ....................................................................................................................................... 3-4

3.4. NO SHIPPING RESTRAINTS .......................................................................................................................................................................... 3-6

3.5. INSTALLING THE BELOW DECKS EQUIPMENT. .......................................................................................................................................... 3-6

3.5.1. General Cautions & Warnings ............................................................................................................................................. 3-6

3.6. IF COAX CABLE CONNECTIONS .................................................................................................................................................................. 3-6

3.6.1. Red Coax ........................................................................................................................................................................................ 3-6

3.6.2. Blue Coax ....................................................................................................................................................................................... 3-6

3.6.3. White Coax .................................................................................................................................................................................... 3-6

3.6.4. Green Coax .................................................................................................................................................................................... 3-6

3.6.5. Black Coax ..................................................................................................................................................................................... 3-6

3.7. CONNECTING THE BELOW DECKS EQUIPMENT ........................................................................................................................................ 3-7

3.7.1. Connecting the BDE AC Power Cables ........................................................................................................................... 3-7

3.7.2. Media Xchange Point™ (LMXP) Connections .............................................................................................................. 3-7

3.7.3. Other BDE connections .......................................................................................................................................................... 3-8

3.8. FINAL CHECKS ................................................................................................................................................................................................ 3-8

3.8.1. Visual/Electrical inspection ................................................................................................................................................... 3-8

3.8.2. Electrical - Double check wiring connections ............................................................................................................. 3-8

3.9. SETUP - MEDIA XCHANGE POINT™ (LMXP) .......................................................................................................................................... 3-8

4. CONFIGURING A COMPUTER FOR THE LMXP ........................................................................................................................ 4-1

5. DEALER LOGIN PAGES – LMXP .......................................................................................................................................................... 5-1

5.1. LOGIN PAGE .................................................................................................................................................................................................... 5-1

5.2. LAYOUT OF THE GUI PAGES ........................................................................................................................................................................ 5-1

5.2.1. Top Banner (All Pages) ............................................................................................................................................................ 5-1

5.2.2. Left Side Bar .................................................................................................................................................................................. 5-2

Table of Contents vi

5.3. SATELLITE SEARCH – AUTO ......................................................................................................................................................................... 5-3

5.4. CONFIGURATION – COMMUNICATION INTERFACES .............................................................................................................................. 5-4

5.4.1. Network Configuration ........................................................................................................................................................... 5-4

5.4.2. Serial Ports .................................................................................................................................................................................... 5-4

5.4.3. Navigation ..................................................................................................................................................................................... 5-5

5.4.4. Dry Alarms .................................................................................................................................................................................... 5-6

5.5. CONFIGURATION – SYSTEM ........................................................................................................................................................................ 5-6

5.5.1. Blockage Zones .......................................................................................................................................................................... 5-7

5.5.2. Miscellaneous ............................................................................................................................................................................. 5-7

5.5.3. Advanced Settings .................................................................................................................................................................... 5-8

5.6. CONFIGURATION – REFLECTOR ................................................................................................................................................................... 5-8

5.6.1. Primary Reflector Configuration ....................................................................................................................................... 5-9

5.6.2. Primary Reflector Advanced Settings ............................................................................................................................. 5-9

5.7. CONFIGURATION - SATELLITE ..................................................................................................................................................................... 5-9

5.7.1. Satellite Selection: ................................................................................................................................................................. 5-10

5.7.2. Add Satellite .............................................................................................................................................................................. 5-10

5.7.3. Delete Satellite ........................................................................................................................................................................ 5-13

5.8. CONFIGURATION – HARDWARE PROFILE ............................................................................................................................................... 5-13

5.9. STATUS – SYSTEM ...................................................................................................................................................................................... 5-14

5.10. TOOLS – COMMAND LINE INTERFACE (CLI) ......................................................................................................................................... 5-14

5.11. TOOLS – POSITION ANTENNA .................................................................................................................................................................. 5-15

5.11.1. Satellite - ..................................................................................................................................................................................... 5-15

5.11.2. Threshold .................................................................................................................................................................................... 5-18

5.11.3. Advanced Operations ........................................................................................................................................................... 5-19

5.12. TOOLS – TEST .............................................................................................................................................................................................. 5-19

5.13. LOGS .............................................................................................................................................................................................................. 5-20

5.13.1. Activity ......................................................................................................................................................................................... 5-20

5.14. OTHERS - ADMIN ........................................................................................................................................................................................ 5-20

5.14.1. Firmware ..................................................................................................................................................................................... 5-20

5.14.2. System Configuration .......................................................................................................................................................... 5-21

5.14.3. Reboot .......................................................................................................................................................................................... 5-21

5.15. OTHERS – HELP ............................................................................................................................................................................................ 5-22

6. QUICK START OPERATION .................................................................................................................................................................. 6-1

6.1. TURN POWER ON .......................................................................................................................................................................................... 6-1

6.2. IF SATELLITE SIGNAL IS FOUND AND NETWORK LOCK IS ACHIEVED: ................................................................................................... 6-1

6.3. IF NO SIGNAL IS FOUND: ............................................................................................................................................................................... 6-1

6.4. TO TARGET A DIFFERENT SATELLITE ........................................................................................................................................................... 6-2

6.5. BASIC DESCRIPTION OF THE FRONT PANEL STATUS LEDS.................................................................................................................... 6-2

7. SPECIFICATIONS ........................................................................................................................................................................................ 7-1

7.1. ABOVE DECKS EQUIPMENT .......................................................................................................................................................................... 7-1

7.2. BELOW DECKS EQUIPMENT .......................................................................................................................................................................... 7-6

7.3. REGULATORY COMPLIANCE .......................................................................................................................................................................... 7-8

7.4. CABLES ............................................................................................................................................................................................................. 7-8

7.4.1. Antenna L-Band TVRO IF Coax Cables (Customer Furnished) .......................................................................... 7-8

7.4.2. Gyro Compass Interface Cable (Customer Furnished) ......................................................................................... 7-8

8. DRAWINGS ...................................................................................................................................................................................................... 8-1

8.1. SEA TEL TV MODEL SPECIFIC DRAWINGS ................................................................................................................................................ 8-1

Safety Sea Tel TVHD Antenna Systems

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1. Safety The following general safety precautions must be observed during all phases of operation, service and repair of this equipment. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture and intended use of the equipment. Sea Tel Inc (dba Cobham SATCOM) assumes no liability for the customer's failure to comply with these requirements.

Service User access to the interior of the LMXP is prohibited. Only a technician authorized by Cobham SATCOM may perform service - failure to comply with this rule will void the warranty. Access to the interior of the Above Deck Equipment is allowed. Inspection of certain components as described in the Scheduled Inspections Manual may be accomplished by an engineer onboard. Maintenance of the LMXP, or the Above Deck Equipment, may only be performed by a technician authorized by Cobham SATCOM.

Do not service or adjust alone Do not attempt internal service or adjustments unless another person, capable of rendering first aid resuscitation, is present.

Grounding, cables and connections To minimize shock hazard and to protect against lightning, the equipment chassis and cabinet must be connected to an electrical ground. The Above & Below Decks Equipments must be grounded to the ship. For further grounding information refer to the Installation chapter of this manual.

Do not extend the cables beyond the lengths specified for the equipment. The cable between the ACU and Above Deck Unit can be extended if it complies with the specified data concerning cable losses etc.

All coaxial cables are to be shielded and should not be affected by magnetic fields. However, try to avoid running cables parallel to high power and AC/RF wiring as it might cause malfunction of the equipment.

Power supply The +24 VDC voltage to the Above Deck Equipment is provided by the LMXP.

Do not operate in an explosive atmosphere Do not operate the equipment in the presence of flammable gases or fumes. Operation of any electrical equipment in such an environment constitutes a definite safety hazard.

Keep away from live circuits Operating personnel must not remove equipment covers. Component replacement and internal adjustment must be made by qualified maintenance personnel. Do not replace components with the power cable connected. Under certain conditions, dangerous voltages may exist even with the power cable removed. To avoid injuries, always disconnect power and discharge circuits before touching them.

SAFETY: INTERNAL BATTERY

The main PCB inside the LMXP, and inside the TICU, each contain a lithium battery. These batteries should last for many years but if replacement is required, use caution. These batteries are only to be replaced by a technician authorized by Cobham SATCOM to perform such service.

CAUTION - RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.

DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.

Failure to comply with the rules above will void the warranty!

Sea Tel TVHD Antenna Systems Safety

1-2

This Page Intentionally Left Blank

Site Survey Sea Tel TVHD Antenna Systems

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2. Site Survey There are three objective of the site survey. The first is to find the best place to mount the antenna and the BDE. The second is to identify the length and routing of the cables and any other items or materials that are required to install the system. The third is to identify any other issues that must be resolved before or during the installation.

2.1. Site Selection Aboard The 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.

• X-Band (3cm) Navigational Radars:

• The ADE should be mounted more than 0.6 meters/2 feet from 2kW (24 km) radars

• The ADE should be mounted more than 2 meters/8 feet from 10kW (72 km) radars

• The ADE should be mounted more than 4 meters/12 feet from 160kW (250km) radars

• S-Band (10cm) Navigational Radars:

• If the ADE is/has C-Band it should be mounted more than 4 meters/12 feet from the S-band Radar.

• The ADE should not be mounted on the same plane as the ship's radar, so that it is not directly in the radar beam path.

• The ADE should be mounted more than 2.5 meters/8 feet from any high power MF/HF antennas (<400W).

• The ADE should be mounted more than 4 meters/12 feet from any high power MF/HF antennas (1000W).

• The ADE should also be mounted more than 4 meters/12 feet from any short range (VHF/UHF) antennae.

• The ADE should be mounted more than 2.5 meters/8 feet away from any L-band satellite antenna.

• The ADE should be mounted more than 3 meters/10 feet away from any magnetic compass installations.

• The ADE should be mounted more than 2.5 meters/8 feet away from any GPS receiver antennae.

• Another consideration for any satellite antenna mounting is multi-path signals (reflection of the satellite signal off of nearby surfaces arriving out of phase with the direct signal from the satellite) to the antenna.

This is particularly a problem for the onboard GPS, and/or the GPS based satellite compass.

• The ADE and the BDE should be positioned as close to one another as possible. This is necessary to reduce the losses associated with long cable runs.

• This mounting platform must also be robust enough to withstand the forces exerted by full rated wind load on the radome.

• The mounting location is robust enough that it will not flex or sway in ships motion and be sufficiently well re-enforced to prevent flex and vibration forces from being exerted on the antenna and radome.

• If the radome is to be mounted on a raised pedestal, it MUST have adequate size, wall thickness and gussets to prevent flexing or swaying in ships motion. In simple terms it must be robust.

If these conditions cannot be entirely satisfied, the site selection will inevitably be a “best” compromise between the various considerations.

2.2. Antenna Shadowing (Blockage)

Any substantial structures in the path between the front of the antenna and the satellite it is pointing to will cause significant degradation of the signal. The location of the ADE should be chosen to minimize blockage caused by the structures of the ship. It is desirable to be mounted high enough to minimize the effects of the surrounding structures while not being mounted too high (refer to mounting height information below). Large, solid, structures will cause significant signal loss while wire rope stays, lifelines, small diameter handrails and other accessories may cause little to no noticeable loss.

Sea Tel TVHD Antenna Systems Site Survey

2-2

2.3. Mounting Foundation

2.3.1. Mounting on Deck or Deckhouse

While mounting the ADE on a mast is a common solution to elevate the ADE far enough above the various obstructions which create signal blockages, sometimes the best mounting position is on a deck or deckhouse top. These installations are inherently stiffer than a mast installation, if for no other reason than the design of the deck/deckhouse structure is prescribed by the ship’s classification society. In the deck/deckhouse design rules, the minimum plating and stiffener guidelines are chosen to preclude high local vibration amplitudes.

Most installations onto a deck or deckhouse structure will require a mounting pedestal to raise the ADE above the deck for radome hatch access and to allow the full range of elevation (see ADE mounting considerations above). Some care must be taken to ensure the mounting pedestal is properly aligned with the stiffeners under the deck plating.

2.3.2. ADE Mounting Considerations

Mounting the radome directly on the deck/ platform prevents access to the hatch in the base of the radome unless an opening is designed into the mounting surface to allow such entry. If there is no access to the hatch the only way to service the antenna is to remove the radome top.

Two people are required to take the top off of the radome without cracking or losing control of it, but even with two people a gust of wind may cause them to lose control and the radome top may be catastrophically damaged (see repair information in the radome specifications).

If access to the hatch cannot be provided in the mounting surface, provide a short ADE support pedestal to mount the ADE on which is tall enough to allow access into the radome via the hatch.

Ladder rungs must be provided on all mounting stanchions greater than 3-4 feet tall to allow footing for personnel safety when entering the hatch of the radome.

When strain relief glands are being used the recommended cable passage will be in/out the starboard side of the base of the radome approximately 12 inches from the center of the radome base, down along the side if the pedestal, through the deck and into the interior of the ship.

2.3.3. Sizing of the support pedestal

The following should be taken into account when choosing the height of a mounting support stand:

1. The height of the pedestal should be kept as short as possible, taking into account recommendations given in other Sea Tel Guidelines.

2. 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).

3. The connection of the ADE mounting plate to the stanchion and the connection of the pedestal to the ship should be properly braced with triangular gussets (see graphic above). Care should be taken to align the pedestal gussets to the ship’s stiffeners as much as possible. Doublers or other reinforcing plates should be considered to distribute the forces when under-deck stiffeners are inadequate.

4. The diameter of the pedestal stanchion shall not be smaller than 100 millimeters (4 inches).

Where the ADE base diameter exceeds 1.5 meters (60 inches), additional stanchions (quantity greater than 3) should be placed rather than a single large stanchion.

5. Shear and bending should be taken into account in sizing the ADE mounting plate and associated gussets.

6. Shear and bending must be taken into account when sizing the pedestal to ship connection.

7. All welding should be full penetration welds –V-groove welds with additional fillet welds – with throats equivalent to the thickness of the thinnest base material.

8. For an ADE mounted greater than 0.6 meters (24 inches) above the ship’s structure, at least one

(1) foot rung should be added. Additional rungs should be added for every 0.3 meter (12 inches) of pedestal height above the ship’s structure.

9. For an ADE mounted greater than 3 meters (9 feet) above the ship’s structure, a fully enclosing cage should be included in way of the access ladder, starting 2.3 meters (7 feet) above the ship’s structure.

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2.4. Mounting Height

The higher up you mount the antenna above the pivot point of the ship the higher the tangential acceleration (g-force) exerted on the antenna will be (see chart below).

When the g-force exerted on the antenna is low, antenna stabilization and overall performance are not affected.

If the g-force exerted on the antenna is high enough (> 1 G), antenna stabilization and overall performance are affected.

If the g-force exerted on the antenna is excessive (1-2 Gs), the antenna does not maintain stabilization and may be physically damaged by the g-force.

2.5. Mast Configurations

Sea Tel recommends mounting the ADE in a location that has both a clear line-of-sight to the target satellites in all potential azimuth/elevation ranges and sufficient support against vibration excitement. If possible, mounting the ADE pedestal directly to ship deckhouse structures or other box stiffened structures is preferred. However, in many cases, this imposes limits on the antenna system’s clear line-of-sight.

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.

There are many designs of masts used on ships – masts are nearly as unique in design as the ship is – but the designs often fall into a few categories. These categories can be addressed in terms of typical responses and problems with regards to vibration and mounting of ADE. The most common categories of masts are:

2.5.1. Vertical Masts

Vertical masts are a very ancient and common mast design. In essence, it is the mast derived from the sailing mast and adapted for mounting the ever-increasing array of antennae which ships need to communicate with the world. This drawing of a vertical mast shows the preferred mounting of the ADE center-line above the plane of the radar. Alternatively the ADE is mounted below the plane of the radar signal

Vertical masts are most commonly found on cargo ships – they are simple, inelegant and functional. They are also fairly stiff against torsional reaction and lateral vibrations, as long as the ADE is mounted on a stiff pedestal near the vertical centerline of the mast. If centerline mounting is impractical or otherwise prohibited, the mast platform the ADE is mounted on should be checked for torsional vibration about the centerline of the mast and the orthogonal centerline of the platform.

If the estimated natural frequency of the mast or platform is less than 35 Hertz, the mast or platform should be stiffened by the addition of deeper gussets under the platform or behind the mast.

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2.5.2. Raked Masts

Raked masts are found on vessels where the style or appearance of the entire vessel is important. Again, the inclined mast is a direct descendant from the masts of sailing ships – as ship owners wanted their vessels to look more unique and less utilitarian, they ‘raked’ the masts aft to make the vessel appear capable of speed.

This drawing shows a raked mast, again with the preferred ADE mounting above the radar and alternate with the ADE below the radar.

Raked masts pose special problems in both evaluating the mast for stiffness and mounting of antennae. As can be seen in the drawing, all antennae must be mounted on platforms or other horizontal structures in order to maintain the vertical orientation of the antenna centerline. This implies a secondary member which has a different natural frequency than the raked mast’s natural frequency. In order to reduce the mass of these platforms, they tend to be less stiff than the main box structure of the raked mast. Thus, they will have lower natural frequencies than the raked mast itself. Unfortunately, the vibratory forces will act through the stiff structure of the raked mast and excite these lighter platforms, to the detriment of the antenna.

2.5.3. Girder Masts

Girder masts are large platforms atop a pair of columns. Just like girder constructions in buildings, they are relatively stiff athwart ship

– in their primary axis – but less stiff longitudinally and torsionally. An example of a girder mast is shown in this drawing, with the preferred ADE mounting outboard and above the radar directly on one of the columns and alternate with the ADE centered on the girder above the plane of the radar.

The greatest weakness of girder masts is in torsion – where the girder beam twists about its vertical centerline axis. As with all mast designs discussed so far, mounting the antenna in line with the vertical support structure will reduce the vibration tendencies. Mounting the antenna directly above the girder columns provides ample support to the antenna pedestal and locates the antenna weight where it will influence the natural frequency of the mast the least.

2.5.4. Truss Mast

Truss masts are a variant on the girder mast concept. Rather than a pair of columns supporting a girder beam, the construction is a framework of tubular members supporting a platform on which the antennae and other equipment are mounted. A typical truss mast is shown in this photograph.

Like a girder mast, truss masts are especially stiff in the athwart ship direction. Unlike a girder mast, the truss can be made to be nearly as stiff in the longitudinal direction. Truss masts are particularly difficult to estimate the natural frequency – since a correct modeling includes both the truss structure of the supports and the plate/diaphragm structure of the platform. In general, the following guidelines apply when determining the adequate support for mounting an antenna on a truss mast:

1. Antenna ADE pedestal gussets should align with platform stiffeners which are at least 200 millimeters in depth and 10 millimeters in thickness.

2-5

2. When possible, the antenna ADE pedestal column should align with a vertical truss support.

3. 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.

2.6. Safe Access to the ADE

Safe access to the ADE should be provided. Provisions of the ship’s Safety Management System with regard to men aloft should be reviewed and agreed with all personnel prior to the installation. Installations greater than 3 meters above the deck (or where the access starts at a deck less than 1 meter in width) without cages around the access ladder shall be provided with means to latch a safety harness to a fixed horizontal bar or ring.

The access hatch for the ADE shall be oriented aft, or inboard, when practical. In any case, the orientation of the ADE access hatch shall comply with the SMS guidelines onboard the ship. Nets and other safety rigging under the ADE during servicing should be rigged to catch falling tools, components or fasteners.

2.7. Below Decks Equipment Location

The Antenna Control Unit (LMXP) is a standard 19” rack mount enclosure, therefore, preferred installation is in a standard 19” equipment rack. The ACU mounts from the front of the rack.

The Satellite Receivers, multi-switch and any other associated equipment should be properly mounted for shipboard use.

Plans to allow access to the rear of the ACU, and other equipment, should be considered.

2.8. Cables

During the site survey, walk the path where the cables will be installed. Pay particular attention to how cables will be installed; such as what obstacles they will be routed around, difficulties that will be encountered and the overall length of the 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.

In general, all cable shall be protected from chaffing and secured to a cableway. Cable runs on open deck or down a mast shall be in metal conduit suitable for marine use. The conduit shall be blown through with dry air prior to passing cable to ensure all debris has been cleared out of the conduit and again after passing the cable to ensure no trapped moisture exists. The ends of the conduit shall be sealed with cable glands (preferred), mastic or low VOC silicon sealant after the cables have been passed through.

Cables passing through bulkheads or decks shall be routed through approved weather tight glands.

2.8.1. ADE/BDE Coaxial Cables

The first concern with the coaxial cables installed between the ADE & BDE is length. This length is used to determine the loss of the various possible coax, Heliax or fiber-optic cables that might be used. You should always provide the lowest loss cables to provide the strongest signal level into the satellite receivers.

Be sure that the shield(s) of the coaxes are not in contact with the ships ground.

The coaxes must be of adequate conductor cross-sectional surface area for the length of the cable run and that the loop resistance of the cable run is less than 2.0 ohms. Copper clad iron center conductor cables should never be used.

Signal cable shall be continuous from the connection within the ADE radome, through the structure of the ship to the BDE. Splices, adapters or dummy connections will degrade the signal level and are discouraged.

Be careful of sharp bends that kink and damage the cable. Use a proper tubing bender for Heliax bends.

Penetrations in watertight bulkheads are very expensive, single cable, welded penetrations that must be pressure tested.

Always use good quality connectors that are designed to fit properly on the cables you are using. Poor quality connectors have higher loss, can allow noise into the cable, are easily damaged or fail prematurely.

In as much as is possible, don’t lay the coaxes on power cables. Try to have some separation from Inmarsat & GPS cables that are also passing L-band frequencies or radar cables that may inject pulse repetition noise –as error bits - into your cables.

One of these coaxes provides power to the ADE. Be cautious of length of the run, for voltage loss issues, and assure that the gauge of the conductors in this coax cable is adequate for the current that is expected to be drawn (plus margin). This cable must be low loop resistance and have a solid coper center conductor.

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2.8.2. ACU Power Cable/Outlet

The AC power for the LMXP is not required to be from a UPS, but it is recommended. The LMXP supplies power to the ADE. The power cable provided by Sea Tel complies with the provisions of IEC 60092-350 and -35.

2.8.3. Gyro Compass Cable

Use good quality shielded cables (twisted pairs, individually foil wrapped, outer foil with braid overall is best). For NMEA connection, use 2-wire (twisted pair) shielded cable. Be cautious of length and gauge of the run for voltage loss issues.

2.9. Grounding

All metal parts of the ADE shall be grounded to bare metal that is common to the hull of the ship. This is most commonly accomplished by attaching a ground wire/cable from the upper base plate ground point to a ground stud on the mounting pedestal/stanchion/mast near the base of the radome. Preservation of the bare metal contact point should be done to prevent loss of ground due to rust and/or corrosion.

Grounding by exposing bare metal under all mounting bolts of the under-side of the radome base prior to final tightening does NOT provide adequate grounding of the ADE.

Grounding should be ensured throughout the entire mounting to the hull. While it is presumed the deckhouse is permanently bonded and grounded to the hull, in cases where the deckhouse and hull are of different materials a check of an independent ground bonding strap should be made. Masts should be confirmed to be grounded to the deckhouse or hull.

Installation Sea Tel TVHD Antenna Systems

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3. Installation Your antenna pedestal comes completely assembled in its radome. This section contains instructions for unpacking, final assembling and installing of the equipment. It is highly recommended that trained technicians install the system.

The installation instructions for your system are below.

3.1. Unpacking and Inspection

Exercise caution when unpacking the equipment.

1. Unpack the crates. Carefully inspect the radome surface for evidence of shipping damage.

2. Unpack all the boxes.

3. Inspect everything to assure that all materials have been received and are in good condition.

3.2. Assembly Notes and Warnings

NOTE: All nuts and bolts should be assembled using the appropriate Loctite thread-locker product number for the thread size of the hardware.

Loctite # Description

222 Low strength for small fasteners.

242 Medium strength

638 High strength for motor shafts & sprockets.

2760 Permanent strength for up to 1” diameter fasteners.

290 Wicking, High strength for fasteners which are already assembled.

WARNING: The following values are for through bolted stainless steel hardware. Ensure that all screw/bolt assemblies are tightened according to the tightening torque values listed below:

Screw/Bolt Kg-cm (In-lbs) Screw/Bolt Kg-cm (In-lbs)

4-40 7.1 (6.2) M2.5 6.0 (5.2)

6-32 13.3 (11.5) M3 10.6 (9.2)

8-32 24.3 (21.1) M3.5 16.7 (14.5)

10-24 35.1 (30.5) M4 24.7 (21.4)

12-24 55.3 (48.0) M5 49.9 (43.3)

1/4-20 84.1 (73.0) M6 84.7 (73.5)

5/l6-18 173.2 (150.3) M8 205.5 (178.4)

3/8-16 307.4 (266.8) M10 407.2 (353.4)

7/16-14 491.8 (426.9) M12 710.2 (616.4)

1/2-13 750.4 (651.3) M14 1130.4 (981.1)

9/16-12 1082.8 (939.8) M16 1763.7 (1530.8)

WARNING: Hoisting with other than a webbed four-part sling may result in catastrophic crushing of the radome. Refer to the specifications and drawings for the fully assembled weight of your model antenna/radome and assure that equipment used to lift/hoist this system is rated accordingly.

Sea Tel TVHD Antenna Systems Installation

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CAUTION: The antenna/radome assembly is very light for its size and is subject to large swaying motions if hoisted under windy conditions. Always ensure that tag lines, attached to the radome base frame, are attended while hoisting the antenna assembly to its assigned location aboard ship.

3.3. ADE Installation

3.3.1. ADE Mounting Considerations

Mounting the radome directly on the deck/ platform prevents access to the hatch in the base of the radome unless an opening is designed into the mounting surface to allow such entry. If there is no access to the hatch the only way to service the antenna is to remove the radome top.

Two people are required to take the top off of the radome without cracking or losing control of it, but even with two people a gust of wind may cause them to lose control and the radome top may be catastrophically damaged (see repair information in the radome specifications).

If access to the hatch cannot be provided in the mounting surface, provide a short ADE support pedestal to mount the ADE on which is tall enough to allow access into the radome via the hatch.

Ladder rungs must be provided on all mounting stanchions greater than 3-4 feet tall to allow footing for personnel safety when entering the hatch of the radome.

When strain relief glands are being used the recommended cable passage will be in/out the starboard side of the base of the radome approximately 12 inches from the center of the radome base, down along the side if the pedestal, through the deck and into the interior of the ship.

3.3.2. Open the System Crate

The system Above Decks Equipment (ADE) is shipped to you completely assembled.

We recommend that you place the System Crate in the area that you have chosen to prepare for lifting that ADE onto the ship.

1. This is the System crate.

2. Remove the wood screws that penetrate through the bottom board of the removable panel into the pallet.

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3. Remove the clips around the removable crate wall.

4. Remove the removable crate wall to expose the contents.

5. Remove the wood screws that penetrate through the bottom board of the 3 remaining side panels into the pallet.

6. Set the side/top panels aside, where they will not interfere with hoisting the ADE.

3.3.3. Prepare the Radome Assembly

1. Lift the pallet using a forklift and/or jacks.

2. From the underside of the pallet, remove the four shipping bolts which attach the ADE to its’ pallet. Discard this shipping hardware.

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3. Remove the horizontal bolt in one of the four the lifting brackets which are installed on the underside of the radome base.

4. Attach a properly load rated web lifting strap to the bracket using the bolt removed in the previous step.

5. Repeat these steps 3 and 4 to install the other three lifting straps.

6. Attach a…