Installation and Operation Manual

INSTALLATION AND OPERATION MANUAL

FOR SEA TEL MODEL

9797B-39 KU-BAND TX/RX ANTENNA

WARNING: RF RADIATION HAZARD

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

When the transmit/receive system is in operation, no one should be allowed anywhere

within the radiated beam being emitted from the reflector.

The ultimate responsibility for safety rests with the facility operator and the

individuals who work on the system.

Sea Tel, Inc.

4030 Nelson Avenue

Concord, CA 94520

Tel: (925) 798-7979

Fax: (925) 798-7986

Email: [email protected]

Web: : www.cobham.com\seatel

February 24, 2010

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

Email: [email protected]

Web: www.cobham.com\seatel

Sea Tel Inc doing business as Cobham SATCOM

Document. No. 131478 Revision A

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 Marine Stabilized Antenna systems are manufactured in the United

States of America.

Sea Tel is an ISO 9001:2000 registered company. Certificate Number 19.2867 was issued

August 12, 2005. Sea Tel was originally registered on November 09, 1998.

R&TTE

CE

The Series 97 Family of Marine Stabilized Antenna Pedestals with DAC-97 Antenna Control

Unit complied with the requirements of European Norms and European Standards EN 60945

(1997) and prETS 300 339 (1998-03) on July 20, 1999. Sea Tel document number 119360

European Union Declaration of Conformity for Marine Navigational Equipment is available on request.

This Sea Tel Ku Band antenna will meet the spectral density, stabilization accuracy and, when properly connected to the modem, the automatic cessation of transmission requirements of the 2009 version of FCC 47

C.F.R. § 25.222. Please refer to the declaration included in this manual.

Copyright Notice

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 © 2009 Sea

Tel, Inc is doing business as Cobham SATCOM.

This document has been registered w ith the U.S. Copyright Office.

Revision History

REV ECO#

A N/A

Date

February 24, 2010

By

MDN

Description

Production Release with 400MHz modems andGSR2 software information ii

Table of Contents

1.

INTRODUCTION .......................................................................................................................................................................................... 1-1

1.1.

G

ENERAL

S

YSTEM

D

ESCRIPTION

....................................................................................................................................................................... 1-1

1.2.

P

URPOSE

.................................................................................................................................................................................................................. 1-1

1.3.

S

YSTEM

C

OMPONENTS

........................................................................................................................................................................................ 1-1

1.4.

G

ENERAL SCOPE OF THIS MANUAL

.................................................................................................................................................................... 1-2

1.5.

Q

UICK

O

VERVIEW OF CONTENTS

...................................................................................................................................................................... 1-2

2.

OPERATION ..................................................................................................................................................................................................... 2-1

2.1.

S

YSTEM

P

OWER

-

UP

.............................................................................................................................................................................................. 2-1

2.2.

A

NTENNA

I

NITIALIZATION

................................................................................................................................................................................ 2-1

2.3.

A

NTENNA

S

TABILIZATION

................................................................................................................................................................................. 2-1

2.4.

S

TABILIZED

P

EDESTAL

A

SSEMBLY

O

PERATION

............................................................................................................................................. 2-2

2.5.

T

RACKING

O

PERATION

........................................................................................................................................................................................ 2-2

2.6.

A

NTENNA

P

OLARIZATION

O

PERATION

............................................................................................................................................................ 2-2

2.7.

L

OW

N

OISE

B

LOCK

C

ONVERTER

O

PERATION

/S

ELECTION

: ......................................................................................................................... 2-2

2.8.

RF E

QUIPMENT

..................................................................................................................................................................................................... 2-2

2.9.

R

ADOME

A

SSEMBLY

O

PERATION

...................................................................................................................................................................... 2-2

3.

BASIC SYSTEM INFORMATION ........................................................................................................................................................ 3-1

3.1.

S

ATELLITE

B

ASICS

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

3.1.1.

Ku-Band Receive Frequency (10.95-12.75GHz) ............................................................................................................ 3-1

3.1.2.

Blockage ............................................................................................................................................................................................... 3-1

3.1.3.

Rain Fade ............................................................................................................................................................................................. 3-1

3.1.4.

Signal level .......................................................................................................................................................................................... 3-1

3.1.5.

Satellite Footprints ........................................................................................................................................................................ 3-2

3.1.6.

Linear Satellite polarization ...................................................................................................................................................... 3-2

3.2.

A

NTENNA

B

ASICS

................................................................................................................................................................................................. 3-2

3.2.1.

Unlimited Azimuth ......................................................................................................................................................................... 3-2

3.2.2.

Elevation ............................................................................................................................................................................................... 3-2

3.2.3.

Antenna polarization .................................................................................................................................................................... 3-3

3.2.4.

Stabilization ........................................................................................................................................................................................ 3-3

3.2.5.

Search Pattern .................................................................................................................................................................................. 3-3

3.2.6.

Tracking Receiver – Single Channel Per Carrier Receiver ....................................................................................... 3-3

3.2.7.

Tracking ................................................................................................................................................................................................ 3-3

3.3.

C

OMPONENTS OF THE

S

YSTEM

C

ONFIGURATION

........................................................................................................................................ 3-4

3.3.1.

Antenna ADE Assembly .............................................................................................................................................................. 3-5

3.3.2.

Antenna Control Unit ................................................................................................................................................................... 3-5

3.3.3.

Above Decks AC Power Supply ............................................................................................................................................... 3-5

3.4.

P

OSITIVE

S

ATELLITE

ID ...................................................................................................................................................................................... 3-6

3.5.

O

PEN

A

NTENNA

-M

ODEM

I

NTERFACE

P

ROTOCOL

(O

PEN

AMIP™) S

PECIFICATION

: ........................................................................... 3-6

3.5.1.

Overview: .............................................................................................................................................................................................. 3-6

3.5.2.

Interface requirements: .............................................................................................................................................................. 3-6

3.5.3.

Utilized OpenAMIP Commands: ............................................................................................................................................ 3-7

4.

INSTALLATION ............................................................................................................................................................................................. 4-1

4.1.

G

ENERAL

C

AUTIONS

& W

ARNINGS

................................................................................................................................................................. 4-1

4.2.

S

ITE

S

ELECTION

A

BOARD

S

HIP

......................................................................................................................................................................... 4-2

4.3.

P

REPARING

F

OR

T

HE

I

NSTALLATION

................................................................................................................................................................ 4-3

4.3.1.

Unpack Shipping Crates .............................................................................................................................................................. 4-3

4.3.2.

Inspect / Inventory ........................................................................................................................................................................ 4-3

4.3.3.

Prepare ADE Mounting Location ........................................................................................................................................... 4-3

v


4.3.4.

Preparing BDE Location .............................................................................................................................................................. 4-3

4.3.5.

Installing The System Cables .................................................................................................................................................. 4-3

4.4.

A

SSEMBLING THE

ADE........................................................................................................................................................................................ 4-3

4.4.1.

Preparing for Assembly of the ADE ..................................................................................................................................... 4-3

4.4.2.

Sub-assemble the Base Frame Assembly ......................................................................................................................... 4-4

4.4.3.

Sub-assemble the bottom panels of the 144” Radome Assembly ..................................................................... 4-5

4.4.4.

Sub-assemble the upper panels of the 144” Radome Assembly ........................................................................ 4-7

4.4.5.

Sub-assemble the bottom panels onto the base frame ........................................................................................ 4-10

4.4.6.

Sub-assemble the Antenna Pedestal ................................................................................................................................ 4-11

4.4.7.

Installing the Marine Air Conditioner .............................................................................................................................. 4-13

4.4.8.

Close the 144” Radome Assembly ..................................................................................................................................... 4-14

4.4.9.

Prepare the 144” Radome ADE for Lift ........................................................................................................................... 4-15

4.5.

I

NSTALLING

T

HE

ADE ...................................................................................................................................................................................... 4-16

4.5.1.

Hoist ..................................................................................................................................................................................................... 4-16

4.5.2.

Install Antenna/Radome/Baseframe ................................................................................................................................ 4-16

4.5.3.

Cooling Unit Assembly - TX SYSTEMS ONLY ............................................................................................................. 4-16

4.6.

I

NSTALL

BDE E

QUIPMENT

.............................................................................................................................................................................. 4-16

4.6.1.

ACU & TMS ...................................................................................................................................................................................... 4-16

4.6.2.

Other BDE Equipment ............................................................................................................................................................... 4-17

4.7.

C

ABLE

T

ERMINATIONS

..................................................................................................................................................................................... 4-17

4.7.1.

At The Radome .............................................................................................................................................................................. 4-17

4.7.2.

ACU & TMS ...................................................................................................................................................................................... 4-17

4.7.3.

Other BDE Equipment ............................................................................................................................................................... 4-17

4.8.

F

INAL

A

SSEMBLY

............................................................................................................................................................................................... 4-17

4.8.1.

Mount RF Equipment (TXRX Only) .................................................................................................................................... 4-17

4.8.2.

Remove Stow Braces/Restraints .......................................................................................................................................... 4-17

4.8.3.

Verify all assembly and Wiring connections ................................................................................................................ 4-17

4.8.4.

Balance Antenna Pedestal ...................................................................................................................................................... 4-17

4.9.

P

OWER

-U

P

T

HE

ADE ....................................................................................................................................................................................... 4-17

4.9.1.

Initialization .................................................................................................................................................................................... 4-17

4.9.2.

Home Flag Position..................................................................................................................................................................... 4-18

4.9.3.

BDE ....................................................................................................................................................................................................... 4-18

4.10.

S

ETUP

................................................................................................................................................................................................................... 4-18

5.

SETUP .................................................................................................................................................................................................................. 5-1

5.1.

O

PERATOR

S

ETTINGS

........................................................................................................................................................................................... 5-1

5.2.

AUTO TRIM ........................................................................................................................................................................................................ 5-1

5.3.

M

ANUALLY

O

PTIMIZING

T

ARGETING

............................................................................................................................................................. 5-1

5.1.

S

AT

S

KEW SETTING

.............................................................................................................................................................................................. 5-2

5.2.

P

OLARITY

A

NGLE

(POLANG) P

ARAMETERS

.................................................................................................................................................. 5-2

5.3.

O

PTIMIZING

A

UTO

-P

OLARIZATION

C

ROSS

-P

OL

I

SOLATION

.................................................................................................................... 5-2

5.4.

C

ALIBRATING

R

ELATIVE

A

NTENNA

P

OSITION

(H

OME

F

LAG

O

FFSET

) .................................................................................................... 5-2

5.4.1.

To Calculate HFO: ........................................................................................................................................................................... 5-3

5.4.2.

To Enter the HFO value: .............................................................................................................................................................. 5-4

5.4.3.

Radiation Hazard and Blockage Mapping (AZ LIMIT parameters) ................................................................... 5-5

5.5.

TX P

OLARITY

S

ETUP

............................................................................................................................................................................................ 5-9

5.6.

TRACK DISP ........................................................................................................................................................................................................ 5-9

5.7.

ACU F

ACTORY

D

EFAULT

P

ARAMETER

S

ETTINGS

– S

ERIES

97B & 00B A

NTENNAS

...................................................................... 5-10

6.

FUNCTIONAL TESTING .......................................................................................................................................................................... 6-1

vi


6.1.

ACU / A

NTENNA

S

YSTEM

C

HECK

.................................................................................................................................................................... 6-1

6.2.

L

ATITUDE

/L

ONGITUDE

A

UTO

-U

PDATE CHECK

............................................................................................................................................. 6-1

6.3.

H

EADING

F

OLLOWING

......................................................................................................................................................................................... 6-1

6.4.

A

ZIMUTH

& E

LEVATION

D

RIVE

......................................................................................................................................................................... 6-1

6.5.

F

OUR

Q

UADRANT

T

EST

T

RACKING

.................................................................................................................................................................. 6-2

7.

MAINTENANCE AND TROUBLESHOOTING............................................................................................................................... 7-1

7.1.

W

ARRANTY

I

NFORMATION

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

7.2.

R

ECOMMENDED

P

REVENTIVE

M

AINTENANCE

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

7.2.1.

Check ACU Parameters ............................................................................................................................................................... 7-2

7.2.2.

Latitude/Longitude Auto-Update check ............................................................................................................................ 7-2

7.2.3.

Heading Following .......................................................................................................................................................................... 7-2

7.2.4.

Azimuth & Elevation Drive ......................................................................................................................................................... 7-2

7.2.5.

Test Tracking ..................................................................................................................................................................................... 7-2

7.2.6.

Visual Inspection - Radome & Pedestal .......................................................................................................................... 7-2

7.2.7.

Mechanical Checks ........................................................................................................................................................................ 7-2

7.2.8.

Check Balance ................................................................................................................................................................................... 7-2

7.2.9.

Observe Antenna Initialization ............................................................................................................................................... 7-3

7.3.

400MH

Z

M

ODEM

C

ONFIGURATION

.............................................................................................................................................................. 7-3

7.4.

400 MH

Z

LED

INDICATORS

............................................................................................................................................................................. 7-4

7.5.

400 MH

Z

M

ODEM

S

IGNALS

............................................................................................................................................................................. 7-4

7.5.1.

Pedestal M&C .................................................................................................................................................................................... 7-4

7.5.2.

Radio M&C .......................................................................................................................................................................................... 7-5

7.5.3.

Channel Identification ................................................................................................................................................................. 7-5

7.6.

T

ROUBLESHOOTING

400MH

Z

M

ODEM

C

OMMUNICATION

F

AULTS

..................................................................................................... 7-6

7.6.1.

400MHz Modem Queries: .......................................................................................................................................................... 7-6

7.6.2.

Modem Query Methods .............................................................................................................................................................. 7-6

7.6.3.

Isolating a 400 MHz Modem Fault Procedure: ............................................................................................................. 7-8

7.7.

T

ROUBLESHOOTING

........................................................................................................................................................................................... 7-11

7.7.1.

Theory Of Stabilization Operation ..................................................................................................................................... 7-11

7.7.2.

Antenna Initialization (Series 97B & Series 00 ) ........................................................................................................ 7-11

7.7.3.

Troubleshooting using DacRemP ....................................................................................................................................... 7-12

7.7.4.

Antenna Loop Error Monitoring .......................................................................................................................................... 7-13

7.7.5.

Reference Sensor Monitoring .............................................................................................................................................. 7-14

7.7.6.

Open Loop Rate Sensor Monitoring ................................................................................................................................. 7-16

7.7.7.

Fine Balance and Monitoring Motor Drive Torque .................................................................................................. 7-17

7.7.8.

Open Loop Motor Test .............................................................................................................................................................. 7-18

7.7.9.

To Disable/Enable DishScan .................................................................................................................................................. 7-19

7.7.10.

Satellite Reference Mode ........................................................................................................................................................ 7-19

7.7.11.

To Read/Decode an ACU Error Code 0008 (Pedestal Function Error): ....................................................... 7-19

7.7.12.

Remote GPS LAT/LON Position: ........................................................................................................................................... 7-22

7.8.

M

AINTENANCE

................................................................................................................................................................................................... 7-23

7.8.1.

Balancing the Antenna ............................................................................................................................................................. 7-23

7.8.2.

To Adjust Tilt: .................................................................................................................................................................................. 7-24

7.8.3.

To Reset/Reinitialize the Antenna: ..................................................................................................................................... 7-24

7.9.

P

EDESTAL

C

ONTROL

U

NIT

C

ONFIGURATION

(

XX

97B &

XX

00) ............................................................................................................ 7-25

7.9.1.

MODEL CONFIGURATION NUMBERS ............................................................................................................................ 7-25

7.10.

A

NTENNA

S

TOWING

P

ROCEDURE

.................................................................................................................................................................. 7-26

8.

9797B-39 TECHNICAL SPECIFICATIONS .................................................................................................................................. 8-1

vii


8.1.

A

NTENNA

R

EFLECTOR

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

8.2.

F

EED

A

SSEMBLIES

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

8.2.1.

Ku- Band TXRX Feed Assembly ............................................................................................................................................... 8-1

8.3.

9797-39 RF E

QUIPMENT

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

8.4.

SMW Q

UAD

B

AND

LNB .................................................................................................................................................................................... 8-2

8.5.

P

EDESTAL

C

ONTROL

U

NIT

(PCU) .................................................................................................................................................................... 8-2

8.6.

400 MH

Z

B

ASE

& P

EDESTAL

U

NLIMITED

A

ZIMUTH

M

ODEMS

(3 C

HANNEL

) .................................................................................... 8-3

8.7.

S

TABILIZED

A

NTENNA

P

EDESTAL

A

SSEMBLY

................................................................................................................................................ 8-4

8.8.

144” R

ADOME

A

SSEMBLY

................................................................................................................................................................................. 8-5

8.9.

E

NVIRONMENTAL

C

ONDITIONS

(ADE) ........................................................................................................................................................... 8-5

8.10.

C

ABLES

.................................................................................................................................................................................................................... 8-6

8.10.1.

Antenna Control Cable (Provided from ACU-MUX) .................................................................................................... 8-6

8.10.2.

Antenna Transmit & Receive IF Coax Cables (Customer Furnished) .............................................................. 8-6

8.10.3.

Multi-conductor Cables (Customer Furnished) ............................................................................................................ 8-6

8.10.4.

AC Power Cable (Pedestal & Rf Equipment) ................................................................................................................... 8-6

8.10.5.

AC Power Cable (Optional Marine Air Conditioner) ................................................................................................... 8-6

8.10.6.

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

9.

DRAWINGS ...................................................................................................................................................................................................... 9-1

9.1.

9797B-39 M

ODEL

S

PECIFIC

D

RAWINGS

..................................................................................................................................................... 9-1

9.2.

S

ERIES

97 G

ENERAL

D

RAWINGS

...................................................................................................................................................................... 9-1 viii

9797B-39 Ku-Band TX/RX Antenna Introduction

1.

Introduction

WARNING: RF Radiation Hazard - This stabilized antenna system is designed to be used with transmit/receive equipment manufactured by others. Refer to the documentation supplied by the manufacturer which will describe potential hazards, including exposure to RF radiation, associated with the improper use of the transmit/receive equipment. Note that the transmit/receive equipment will operate independently of the stabilized antenna system.

The ultimate responsibility for safety rests with the facility operator and the individuals who

work on the system.

1.1.

General System Description

Your Series 97 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.

1.2.

Purpose

This shipboard Transmit-Receive (TXRX) system provides you with two-way satellite voice/data communications while underway on an ocean-going vessel. This can be used to provide a wide variety of telephone, fax and data applications. Your Series 97 Antenna system can transmit to and receive from any desired satellite which has adequate signal coverage in your current geographic area. Your Series 97 antenna may be fitted with appropriate

Transmit & Receive RF Equipment and appropriate Feed to allow you to operate in linear polarization mode at and Ku-

Band frequencies. This input will be distributed to your satellite modem and then to all of your other below decks equipment.

1.3.

System Components

The Series 97 TXRX system consists of two major groups of equipment; an above-decks group and a below-decks group. Each group is comprised of, but is not limited to, the items listed below. All equipment comprising the Above

Decks is incorporated inside the radome assembly and is integrated into a single operational entity. For inputs, this system requires only an unobstructed line-of-sight view to the satellite, Gyro Compass input and AC electrical power.

For more information about these components, refer to the Basic System Information section of this manual.

A. Above-Decks Equipment (ADE) Group

1.

Stabilized antenna pedestal

2.

Antenna Reflector

3.

Feed Assembly with LNB(s)

4.

Ku-Band Radio Packages

5.

Ku-Band High Power Amplifiers

6.

Radome Assembly

B. Below-Decks Equipment Group

1.

Antenna Control Unit

2.

Splitter with desired number of outputs (one output to the ACU and one output to the Satellite Modem are required).

3.

Satellite Modem and other below decks equipment required for the desired communications purposes.

4.

Spectrum Analyzer (Optional)

5.

Control, RF and Other cable connections

1-1

Introduction 9797B-39 Ku-Band TX/RX Antenna

Figure 1-1 Series 97 TXRX Simplified Block Diagram

1.4.

General scope of this manual

This manual describes the Sea Tel Series 97 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.

1.5.

Quick Overview of contents

The information in this manual is organized into chapters. Operation, basic system information, installation, setup, functional testing, maintenance, specifications and drawings relating to this Antenna are all contained in this manual

1-2

9797B-39 Ku-Band TX/RX Antenna Operation

2.

Operation


The ultimate responsibility for safety rests with the facility operator and the individuals

who work on the system.

WARNING: RF Radiation Hazard - When the transmit/receive system is in operation, no one should be allowed anywhere within the radiated beam being emitted from the reflector.

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

2.1.

System Power-up

Turn the Power switch on the louvered panel of the antenna pedestal ON. This will energize the antenna pedestal and the associated RF equipment.

Turn the Power switch on rear panel of the Antenna Control Unit (ACU) ON.

2.2.

Antenna Initialization

A functional operation check can be made on the antenna stabilization system by observing its behavior during the 4 phases of initialization.

Turn the pedestal power supply ON. This will release the elevation and cross-level bakes and then the PCU will initialize the stabilized portion of the mass to be level with the horizon and at a prescribed Azimuth and Elevation angles. The antenna will go through the specific sequence of steps (listed below) to initialize the antenna. These phases initialize the level cage, elevation, cross-level and azimuth to predetermined starting positions.

Initialization is completed in the following phases, each phase must complete properly for the antenna to operate properly (post-initialization).

1.

Level Cage is driven CCW, issuing extra steps to assure that the cage is all the way to the mechanical stop.

Then the Level cage will be driven exactly 45.0 degrees CW.

2.

Elevation axis activates - Input from the LV axis of the tilt sensor is used to drive the Elevation of the equipment frame to bring the tilt sensor LV axis to level (this results in the dish being at an elevation angle of

45.0 degrees).

3.

Cross-Level axis activates - Input from the CL axis of the tilt sensor is used to drive Cross-Level of the equipment frame to bring the cross-level axis of the tilt sensor to level (this results in the tilt of the Cross-

Level Beam being level).

4.

Azimuth axis activates - Antenna drives in azimuth until the “Home Flag” signal is produced. This signal is produced by a Home Switch hitting a cam or by a Hall Effect sensor in close proximity to a Magnet.

This completes the phases of initialization. At this time the antenna elevation should 45.0 degrees and Relative azimuth should be at be at home flag (home switch engaged on the home flag cam).

If any of these steps fail, or the Antenna Control Unit reports model number as "xx97(A/B)" re-configure the PCU as described in section the Setup section of this manual. If initialization still fails, refer to the troubleshooting section of this manual.

2.3.

Antenna Stabilization

After initialization has completed, real-time stabilization of the antenna is an automatic function of the PCU.

2-1

Operation 9797B-39 Ku-Band TX/RX Antenna

2.4.

Stabilized Pedestal Assembly Operation

Operation of the stabilized antenna Pedestal Control Unit (PCU) is accomplished remotely by the Antenna Control Unit

(ACU). Refer to the Operation section of the Antenna Control Unit manual for more specific operation details. There are no other operating instructions applicable to the pedestal assembly by itself.

2.5.

Tracking Operation

Tracking optimizes the antenna pointing, in very fine step increments, to maximize the level of the satellite signal being received. The mode of tracking used in this antenna is a variation of Conical Scanning called DishScan.

DishScan continuously drives the antenna in a very small circular pattern at 60 RPM. The ACU evaluates the received signal throughout each rotation to determine where the strongest signal level is (Up, Right, Down or Left) and issues the appropriate Azimuth and/or Elevation steps to the antenna, as needed.

You cannot control tracking from the pedestal itself. Refer to the ACU manual for tracking operation information.

2.6.

Antenna Polarization Operation

Your Scalar Plate assembly is equipped with a polarization motor and potentiometer feedback that are controlled from the Antenna Control Unit. This allows you to have a Linear, or a Circular, feed assembly installed on your antenna.

When you have a Circular feed installed, polarization adjustment. is NOT required. You should set the POL TYPE parameter in your ACU to 0000.

When you have a Linear feed installed, polarization may be operated manually from the ACU but Auto-Polarization mode is the default polarization mode of operation from the ACU and is strongly recommended (set POL TYPE parameter in your ACU to 0072). Refer to the Antenna Control Unit manual for more operation information.

2.7.

Low Noise Block Converter Operation/Selection:

There are two controls applicable to the LNB's installed on this system; 1 operational voltage selection and 2 operational tone control. Voltage and Tone are used to select the frequency band of a quad band LNB (optional), if installed on your system. DC voltage is supplied by the pedestal modem and Tone is supplied by the tone generator.

The Band and Polarity of the Receive IF is selected by the Tracking Band setting in the ACU. Your service provider will determine which frequency band you will use for normal operation. The chart below may be used to determine what tracking band setting to utilize and only applies when the “TrackDisp” parameter is set to 0170 (refer to chapter 5 for detailed information on this parameter).

Tracking Band Setting

Band1

Tone, LNB Voltage & Switch state

Tone OFF, Volt 13, Aux 0

Receive IF Polarity

Cross-Pol Band 1

Band2 Tone ON, Volt 13, Aux 0 Cross-Pol Band 2

Band3

Band4


Tone ON, Volt 18, Aux 0

Cross-Pol Band 3

Cross-Pol Band 4

2.8.

RF Equipment

The RF Equipment is not operated or controlled by the antenna pedestal or Antenna Control Unit. Refer to the vendor supplied manuals for the RF Equipment provided with your system.

2.9.

Radome Assembly Operation

When operating the system it is necessary that the radome access hatch (and/or side door) be closed and secured in place at all times. This prevents rain, salt water and wind from entering the radome. Water and excessive condensation promote rust & corrosion of the antenna pedestal. Wind gusts will disturb the antenna pointing.

There are no other operating instructions applicable to the radome assembly by itself.

2-2

9797B-39 Ku-Band TX/RX Antenna Basic System Information

3.

Basic System Information

This section provides you with some additional information about the satellites you will be using, basics of your Series 97B antenna system and some of the other equipment within your system configuration.

3.1.

Satellite Basics

The satellites are in orbit at an altitude of 22,754 miles and are positioned directly above the equator. Their orbital velocity matches the Earth’s rotational speed, therefore, each appears to remain at a fixed position in the sky (as viewed from your location).

Your antenna can be used with any of the satellites in this orbit that have a strong enough receive signal level. Your antenna is capable of being fitted with a Linear or Circular feed assembly. The feed may be designed to operate at C-

Band frequencies, Ku-Band frequencies or be capable of operation in both bands. With the correct feed assembly you will be able to receive the linear or circular signal at the specific frequency range of the desired satellite.

3.1.1.

Ku-Band Receive Frequency (10.95-12.75GHz)

At these frequencies the signal from the satellite travels only in a straight line and is affected by weather changes in the atmosphere. There are several conditions that can cause a temporary loss of satellite signal, even within an area where the signal level is known to be adequate. The most common of these normal temporary losses are blockage and rain fade. They will interrupt services only as long as the cause of the loss persists.

3.1.2.

Blockage

Blockage is loss due to an object in the path of the signal from the satellite to the dish. If an object that is large and dense is positioned in the path of the signal from the satellite, it will prevent sufficient signal from arriving at the dish. The signal can not bend around, or penetrate through, these objects and the reception will be degraded or completely interrupted. The dish is actively driven to remain pointed at the satellite

(toward the equator) so, as the ship turns a mast or raised structure of your ship may become positioned between the satellite and the dish. Blockage may also be caused a anything standing near the radome, tall mountains, buildings, bridges, cranes or other larger ships near your ship. Moving or rotating the ship to position the antenna where it has an unobstructed view to the desired satellite will restore the antennas’ ability to receive the satellite signal.

3.1.3.

Rain Fade

Atmospheric conditions that may cause sufficient loss of signal level include rain, snow, heavy fog and some solar activities (sun spot and flare activity). The most common of these is referred to as “rain fade”. Rain drops in the atmosphere reduce the signal from the satellite. The heavier the rain the higher the amount of signal loss. When the amount of loss is high enough, the antenna will not be able to stay locked onto the satellite signal. When the amount of rain has decreased sufficiently, the antenna will re-acquire the satellite signal. In a strong signal area, rain fall of about four inches per hour will cause complete loss of signal. In weaker signal areas the effects would be more pronounced.

3.1.4.

Signal level

The level of the receive signal is dependant upon how powerful the transmission is, how wide the signal beam is, and what the coverage area is. Focusing the signal into a narrower beam concentrates its energy over a smaller geographic area, thereby increasing the signal level throughout that area of coverage. This makes it possible for you to use a smaller antenna size to receive that satellite signal. The antenna system must be geographically located in an area where the signal level from the satellite meets (or exceeds) the minimum satellite signal level required for your size of antenna (refer to the Specifications section of this manual) to provide suitable reception. This limits the number of satellites that can be used and the geographic areas where the ship can travel where the signal level is expected to be strong enough to continue providing uninterrupted reception. When traveling outside this minimum signal coverage area, it is normal for the system to experience an interruption in its ability to provide the desired satellite services until entering (or reentering) an area of adequate signal level.

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Basic System Information 9797B-39 Ku-Band TX/RX Antenna

3.1.5.

Satellite Footprints

The focused beam(s) from the satellites are normally aimed at the major land masses where there are large population centers. Footprint charts graphically display the signal level expected to be received in different geographic locations within the area of coverage. The signal will always be strongest in the center of the coverage area and weaker out toward the outer edges of the pattern. The coverage areas are intended to be a guide to reception, however, the actual coverage area and signal level and vary. Also the signal strength is affected by weather.

3.1.6.

Linear Satellite polarization

Satellites may transmit their signals in one of two different polarization modes. The feed installed on your antenna must be designed to operate with linear polarized satellite transmissions.

Circular polarized satellite transmissions do not require polarization adjustment to optimize the reception.

Linear polarized satellite transmissions require periodic adjustment of

“polarization” to optimize the

Figure 3-1 Satellite Signal Polarization

alignment of the LNB to the angle of the signal from the satellite.

When you are at the same longitude as the satellite, its’ horizontal and vertical signals will be aligned to your local horizon. When you are east or west of the satellite, the signals will appear to be rotated clockwise or counter-clockwise from your local horizontal and vertical. Both horizontal and vertical signals from a satellite will appear to be rotated the same amount and are always perpendicular to each other. The amount of rotation is dependent on how far east or west you are form the satellite and how close you are to the

Equator.

3.2.

Antenna Basics

The following information is provided to explain some of the basic functions of the antenna:

3.2.1.

Unlimited Azimuth

Azimuth rotation of the antenna is unlimited (no mechanical stops). Azimuth drive, provided by the azimuth motor, is required during stabilization, searching and tracking operations of the antenna. When the ship turns, azimuth is driven in the opposite direction to remain pointed at the satellite. The actual azimuth pointing angle to the satellite is determined by your latitude & longitude and the longitude of the satellite. It is important to know that the antenna should be pointed (generally) toward the equator.

The azimuth angle to the satellite would be 180 degrees true (relative to true north) if the satellite is on the same longitude that you are on. If the satellite is east, or west, of your longitude the azimuth will be less than, or greater than 180 degrees respectively.

When checking for blockage you can visually look over the antenna radome toward the equator to see if any objects are in that sighted area. If you are not able to find any satellites it may also be useful to remove the radome hatch to visually see if the dish is aimed the correct direction (towards the equator).

3.2.2.

Elevation

In normal operation the elevation of the antenna will be between 00.0 (horizon) and 90.0 (zenith). The antenna can physically be rotated in elevation below horizon and beyond zenith to allow for ship motion.

Elevation drive, provided by the elevation motor, is required during stabilization, searching and tracking operations of the antenna. The actual elevation pointing angle to the satellite is determined by your latitude

& longitude and the longitude of the satellite. In general terms the elevation angle will be low when you are at a high latitudes and will increase as you get closer to the equator.

Additionally, from any given latitude, the elevation will be highest when the satellite is at the same longitude that you are on. If the satellite is east, or west, of your longitude the elevation angle will be lower.

3-2


3.2.3.

Antenna polarization

You have a linear polarization feed installed, the system should have been adjusted properly and set-up to operate in Auto-Polarization mode. The ACU will then automatically adjust the polarization of the feed, as necessary, while the ship travels in Latitude and Longitude.

3.2.4.

Stabilization

Your antenna is stabilized in all three axes of motion. Stabilization is the process of de-coupling the ships’ motion from the antenna. Simply put, this allows the antenna to remain pointed at a point in space while the boat turns, rolls or pitches under it. To accomplish this, the Pedestal Control Unit (PCU) on the antenna pedestal assembly senses the motion and applies drive to the appropriate motor(s) in opposition to the sensed motion. Azimuth (AZ), Elevation (EL) and Cross-Level (left-right tilt) are actively stabilized automatically by the PCU as part of its normal operation.

3.2.5.

Search Pattern

Whenever the desired satellite signal is lost (such as when the antenna is blocked) the Antenna Control Unit will automatically initiated a Search to re-acquire the desired signal.

Search is conducted in a two-axis pattern consisting of alternate movements in azimuth and elevation. The size and direction of the movements are increased and reversed every other time resulting in an expanding square pattern.

When the antenna is able to re-acquire the desired signal the ACU will automatically stop searching and begin

Tracking the signal to optimize the pointing of the antenna to get the highest signal level from the satellite.

3.2.6.

Tracking Receiver – Single Channel Per Carrier Receiver

The SCPC Narrow Band Receiver located in the Antenna Control Unit (ACU) is used to acquire, identify and track a narrow band carrier, or beacon signal, or the desired satellite. When properly setup, the settings for the satellite are saved to expedite future acquisition of the desired satellite. The system must have adequate satellite signal level to stop searching (and begin tracking the acquired satellite).

3.2.7.

Tracking

Your Antenna Control Unit actively optimizes the pointing of the dish for maximum signal reception. This process is called tracking and is accomplished by continuously making small movements of the dish while monitoring the level of the received signal. Evaluation of this information is used to continuously move the stabilization point toward peak satellite signal reception. These minor pointing corrections keep the signal level “peaked” as part of normal operation.

3-3


3.3.

Components of the System Configuration

Figure 3-2 9797B TXRX Simplified Block Diagram

The following text provides a basic functional overview of the system components and component interconnection as referred to in the simplified block diagram for your 9797Btenna. Also, refer to the appropriate page of the System

Block Diagram which depicts your system configuration.

3-4

9797B-39 Ku-Band TX/RX Antenna

3.3.1.

Antenna ADE Assembly

The Above Decks Equipment consists of an

Antenna Pedestal inside a Radome assembly.

The pedestal consists of a satellite antenna dish & feed with a linear, or a circular Low

Noise Block converter (LNB) with polarization motor mounted on a stabilized antenna pedestal. The radome provides an environmental enclosure for the antenna pedestal assembly inside it. This keeps wind, water condensation and salt-water spray off the antenna pedestal assembly. This prevents damage and corrosion that would shorten the expected life span of the equipment.

Two coaxial cables are connected from the antenna radome assembly to the below decks equipment. One of these cables includes the

Antenna Control signaling and IF, the other cable carries the other IF signal.

These cables ultimately provide the input/output signals into/out of the satellite modem.

Basic System Information

Figure 3-3 Series 97 TXRX Above Decks Equipment

3.3.2.

Antenna Control Unit

The Antenna Control Unit allows the operator to control and monitor the antenna pedestal with dedicated function buttons, LED’s and a 2 line display. The ACU and its Terminal Mounting Strip are normally mounted in a standard 19” equipment rack. The ACU should be mounted in the front of the equipment rack where it is easily accessible. The Terminal Mounting Strip is normally mounted on the rear of the equipment rack. It is recommended that the antenna control panel be mounted near the modem, or one of the Satellite Receiver locations, where you can see the effect you are having on the satellite signal as you are controlling the antenna.

The Antenna Control Unit is connected to the antenna, ships Gyro Compass and to the GPS Engine (when included).

Figure 3-4 DAC Antenna Control Unit

The Antenna Control Unit (ACU) communicates via an RS-422 serial data link with the Pedestal Control Unit

(PCU) located on the antenna. This control signal is converted to RF and sent up one the Antenna coax cables to the pedestal where it is converted back to RS-422 to the PCU. The Pedestal Control Unit stabilizes the antenna against the ship's roll, pitch, and turning motions. The ACU is the operator interface to the PCU and provides the user with a choice of positioning commands to point the antenna, search commands to find the satellite signal and tracking functions to maintain optimum pointing.

3.3.3.

Above Decks AC Power Supply

Pedestal Power - An appropriate source of AC Voltage (110 VAC 60 Hz OR 220 VAC 50 Hz) is required for the above decks equipment. Total power consumption will depend on the number of equipments connected to this power source.

RF Equipment (TX/RX Systems ONLY) - The AC voltage source should be well regulated and surge protected.

Uninterrupted Power Supplies are frequently installed (below decks) to provide power for the antenna

3-5


pedestal, especially if RF Equipment is installed on the pedestal. Refer to the Specifications section of this manual for the power consumption of the antenna pedestal and RF Equipment.

Marine Air Conditioner Unit (TX/RX Systems ONLY) - If a marine air conditioner is included with your system, the AC voltage source should be from a separate AC Power breaker source than the antenna pedestal. AC power for the air conditioner should be well regulated and surge protected, but does NOT need to from an

Uninterrupted Power Supply. Refer to the marine air conditioner manual for its’ power requirements and consumption specifications.

3.4.

Positive Satellite ID

The ACU has the means of positively identifying a satellite either internally (DVB compliant transponders) or Externally

(Modem lock indication via Ethernet, OpenAMIP, or via an analog DC input into the TMS.

For internal satellite ID, all of the DVB receiver parameter settings must be set to match that of the inbound transponder.

For external satellite ID, the NID value must be set to 0000 and the system type parameter must include the 2 value at minimum.

• For OpenAMIP compatible satellite modems, an Ethernet cable connection to the ACU’s Ethernet port is required. NOTE: The modems option file must be built to enable the appropriate Rx lock indication.

• For non-OpenAMIP compatible satellite modems, 2 wires coming from the Satellite modems must be connected to the AGC and Ground input pins of the TMS.

3.5.

Open Antenna-Modem Interface Protocol (OpenAMIP™) Specification:

3.5.1.

Overview:

OpenAMIP, an ASCII message based protocol invented and Trademarked by iDirect is a specification for the interchange of information between an antenna controller and a satellite modem. This protocol allows the satellite modem to command the ACU (via TCP port 2002) to seek a particular satellite as well as allowing exchange of information necessary to permit the modem to initiate and maintain communication via the antenna and the satellite. In general, OpenAMIP is not intended for any purpose except to permit a modem and the ACU to perform synchronized automatic beam switching. It is NOT a status logging system or a diagnostic system. In addition, OpenAMIP is intend for a typical installation whereby a specific satellite modem and Antenna system are properly configured to work together. The protocol does not make specific provisions for auto-discovery or parameter negotiation. It is still the responsibility of the installer to assure the parameters of both the satellite modem (proper option files) and the ACU/PCU (setup parameters) are actually compatible for the intended satellite(s).

3.5.2.

Interface requirements:

3.5.2.1.

Hardware

Sea Tel Antenna Control Units Model DAC2202 or DAC2302.

Any Satellite modem manufacturer that is compatible with OpenAMIP

CAT5 Patch cable

3.5.2.2.

Software

Sea Tel model DAC2202:

ACU software version 6.06 or greater

CommIF module software version 1.10f or greater

Sea Tel model DAC2302:

ACU software version 7.06 or greater

CommIF module software version 1.10f or greater

3-6


3.5.3.

Utilized OpenAMIP Commands:

3.5.3.1.

Antenna Commands:

Command Description

S f1 f2 f3 Satellite Longitude, 3 parameters:

Degrees E/W (-value equals West), Latitude Variance (Inclined Orbit),

Sat Skew Offset

P c1 c2

H f1 f2

B f1 f2

F

A i

L b1 b2

W i

I s1 s2

Polarization, 2 parameters:

H,V,L,, or R

Tracking Frequency: 2 Parameters:

Center Frequency and Bandwidth in MHz

Down Conversion Offset: 2 parameters:

LNB (Receive) Local Oscillator and BUC (TX) L.O.

Find,

Target satellite using existing S, P,R, and H Parameters

Set keep alive in seconds (0 = off)

Modem Lock and free to transmit. 2 parameters: b1 indicates Rx lock and b2 (not utilized) enables/disables Tx Mute to BUC

GPS Update:

Sets GPS Update period in seconds (0 = Off)

Set modem vendor (s1) and device (s2) 2 parameters:

3.5.3.2.

Modem Commands:


a i Set keep alive in seconds (0 = off) i s1 s2 s b1 b2

Set Antenna Vendor (s1) and device (s2) 2 parameters:

Antenna Status: 2 parameters: b1 is functional status and b2 is Tx allowed w b1 f1 f2 t1 Set GPS Position: 4 parameters: b1 is validity flag, f1 is latitude, f2 is longitude, and t1 is timestamp

Example

“S -20.1 1.0 3.5”

“P L R”

“H 14123.321 0.256”

“B 10750”

“A 5”

“L 1 1”

“W 300”

“I iDirect 5100”

Example

“a 5”

“i Sea Tel DAC-2202”

“s 1 1”

“w 1 38.222 122.123 0”

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This Page Intentionally Left Blank

3-8

9797B-39 Ku-Band TX/RX Antenna Installation

4.

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.

4.1.

General Cautions & Warnings

WARNING: Assure that all nut & bolt assemblies are tightened according the tightening torque values listed below:

Bolt Size Inch Pounds

1/4-20

5/l6-18

3/8-16

1/2-13

75

132

236

517

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

243

680

271

Low strength for small fasteners.

Medium strength, oil tolerant.

High strength for Motor Shafts & Sprockets.

Permanent strength for up to 1” diameter fasteners.

290

Wicking, High strength for fasteners which are already assembled.

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.

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 the antenna assembly is being hoisted to its assigned location aboard ship.

WARNING: Electrical Hazard – Dangerous AC Voltages exist inside the Antenna Pedestal

Breaker Box. Observe proper safety precautions when working inside the Pedestal Breaker Box.

WARNING: Electrical Hazard – Dangerous AC Voltages exists on the side of the Antenna

Pedestal Power Supply. Observe proper safety precautions when working inside the Pedestal

Power Supply.

4-1

Installation 9797B-39 Ku-Band TX/RX Antenna


The ultimate responsibility for safety rests with the facility operator and the

individuals who work on the system.

WARNING: RF Radiation Hazard - Prior to working on the stabilized antenna system, the power to the transmit/receive equipment must be locked out and tagged. Turning OFF

power to the Antenna Control Unit does NOT turn Transmit power output OFF.




4.2.

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.

• 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 Above Decks Equipment (ADE) and the Below Decks Equipment (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.

4-2


4.3.

Preparing For The Installation

4.3.1.

Unpack Shipping Crates

Exercise caution when unpacking the equipment.

4.3.2.

Inspect / Inventory

Carefully inspect the radome panel surfaces for evidence of shipping damage. Inspect the pedestal assembly and reflector for signs of shipping damage.

4.3.3.

Prepare ADE Mounting Location

Prepare the mounting location for the Radome. If the radome is to be bolted to the deck (or a platform) assure that the mounting holes have been drilled. Assure that the mounting hardware has obtained and is readily available.

4.3.4.

Preparing BDE Location

Prepare the mounting location for the Below Decks Equipment. These equipments would normally be installed in a standard 19” equipment rack. Refer to the Antenna Control Unit manual for installation of the

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.

4.3.5.

Installing The System Cables

Install appropriate cables from Below Decks Equipment to the ADE Location(s).

The cables must be routed from the above-decks equipment group through the deck and through various ship spaces to the vicinity of the below-decks equipment group. When pulling the cables in place, avoid the use of excessive force. Exercise caution during the cable installation to assure that the cables are not severely bent

(proper bend radius), kinked or twisted and that connectors are not damaged.

Assure that the cables have been run through watertight fittings and/or will not permit water entry into the ship when the installation is completed. After cables have been routed and adjusted for correct cable length at each end, seal the deck penetration glands and tie the cables securely in place.

4.4.

Assembling the ADE

4.4.1.

Preparing for Assembly of the ADE

Read this entire assembly procedure before beginning.

Refer to the System Block diagram, General Assembly, Baseframe Assembly, Radome Assembly and Radome

Installation Arrangement drawings for your system.

Select a secure assembly site that provides enough area to work with the large radome panels while subassembling the baseframe, sections of the radome, Antenna Pedestal and Reflector & Feed. The area should be a clean, flat location, free of rocks & debris (ie concrete). The site should also provide protection from wind, rain and other adverse weather. A hoist, or small crane, is needed to assemble these sub-assemblies to form the final ADE Assembly.

As an example, you might sub-assemble everything on the pier where the ship will tie up, then use the crane to put the sub-assemblies together and lift the whole ADE up to the mounting location on the ship.

You can change order of these steps, however, in the end the objective is to have a well sealed radome with flanges that are clean of excess caulking. In addition it is important that the ADE is structurally sound for severe weather conditions.

4-3


4.4.2.

Sub-assemble the Base Frame Assembly

Refer to the Base Frame Assembly drawing for your system and the procedure below.

NOTE: Unless otherwise indicated, all nuts and bolts should be assembled with Loctite 271 or its equivalent.

WARNING: Assure that all nut & bolt assemblies are tightened according the tightening torque values listed below:

SAE Bolt Size Inch Pounds Metric Bolt Size Kg-cm

1/4-20

5/l6-18

3/8-16

1/2-13

75

132

236

517

M6

M6

M12

75.3

225

622

1.

Place the radome base frame on temporary support blocks, or jack stands, at least 22 inches high.

2.

Loosely assemble the eight legs, eight interior braces and

4 outer braces to the under side of the radome base frame using the hardware provided. Insure that a split washer is used under each nut.

3.

Assure that the legs & braces are correctly assembled.

4.

Apply Loctite to the bolt threads and tighten all the hardware to specified torque.

5.

Loosely assemble the eight feet to the bottom end of the legs using the hardware provided. Insure that a split washer is used under each nut

6.

Remove the support blocks, or jacks, and set the base frame down on the flat, even, assembly surface to align the feet. Apply Loctite. And tighten all the hardware to specified torque.

7.

Install the Base Hatch and clamp the latches from the under-side.

4-4


4.4.3.

Sub-assemble the bottom panels of the 144” 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 & debris (ie concrete) to assure good horizontal alignment of the panels.

If there are sufficient number of people available to each hold a panel while an additional person loosely installs a bolt/nut high, mid and low on each flange, the bottom half of the radome can be assembled very quickly. With 3 bolts loosely holding each flange the radome will then stand as a loose bowl and the extra 5 people can leave. Loosely install the rest of the hardware in each flange.


If only 2 people are available,

1.

On a flat surface, adjoin 2 panels and loosely install a bolt/nut high, mid and low in the adjoined flange.

HINT: A crate, or other object, can be put against the panels to hold them up while additional panes are adjoined.

2.

Continue adjoining additional panels loosely installing a bolt/nut high, mid and low on each flange until all 6 panels have been loosely assembled to form the bottom half of the radome.

3.

Working as a team, loosely install the rest of the hardware in all of the flanges.

Do NOT tighten the bolts at this time.

4.

Assure good horizontal alignment of the panels.

Good alignment of the bottom edge of the panels is important for good seal on the base frame and good alignment of the top provides a good seal between the lower and upper panels.

5.

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. The tape will be removed just before the radome caulking has had time to set.

4-5

Installation

6.

Open each 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 dual beads of caulking can be applied from outside and inside if you prefer).


7.

Clean excess caulking off of the flange area (inside and out). The empty Caulking tubes can be used to clean the excess caulking off without scratching the radome finish.

8.

Repeat caulking, closing and cleaning the vertical flanges until all of the lower panel seams are closed.

9.

Remove the tape from the vertical seams.

10.

The lower section of the radome is now complete.

11.

Place short pieces of 2”x4” boards under the perimeter of the lower panel assembly to raise it up off of the ground.

4-6


12.

Attach 4 radome lifting brackets (PN 122848), or other lifting arrangement, evenly spaced around the bottom of the lower panel assembly.

13.

Insert a 1” bolt through a fender washer, down through the bottom flange of one of the lower panels and thread it into the threaded lip of the lifting bracket as shown in the picture.

14.

Attach three more brackets, in the same manner, so that the lifting brackets are in four equidistant points around the perimeter of the bottom flange of the lower panel assembly.

15.

Attach web strap lifting sling to the four points.

16.

The lower panel assembly is now ready to lift onto the base frame.

Installation

4.4.4.

Sub-assemble the upper panels of the 144” 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 & debris (ie concrete) to assure good horizontal alignment of the panels.


Only 2 people are required to subassemble the top of the radome.

1.

On a flat surface, adjoin 2 panels and loosely install a bolt/nut high, mid and low in the adjoined flange.

2.

Continue adjoining additional panels loosely installing a bolt/nut high, mid and low on each flange until all 6 panels have been loosely assembled to form the bottom half of the radome.

4-7

Installation

3.

The person inside now loosely install the rest of the hardware in all of the flanges.

Do NOT tighten the bolts at this time.

NOTE: The person who is working inside installing hardware, applying

Loctite, tightening hardware and cleaning the inner flanges will remain inside until the cap and lifting brackets are installed.

4.

Assure good horizontal alignment of the panels.

Good alignment of the bottom edge of the panels is important for good seal between the lower and upper panels.

5.

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. The tape will be removed just before the radome caulking has had time to set.


6.

Open each seam wide enough to install a good bead of silicone caulk, apply Loctite to and firmly tighten all of the bolts in that seam (Smaller dual beads of caulking can be applied from outside and inside if you prefer).

7.

Clean excess caulking off of the flange areas inside and outside the radome.

4-8


8.

Repeat caulking, closing and cleaning the vertical flanges until all of the upper panel seams are closed.

9.

Remove tape from the vertical seams.

10.

Apply a 3/8” layer of caulking to the under-side of the perimeter flange of radome cap.

11.

(Outside person) Climb onto the upper panel assembly, have someone (third person required only for this step) hand the cap to the person on top of the radome.

12.

Insert the cap into the top of the radome with a twisting rotation. This will evenly spread the caulking and align the bolt holes inside the radome top (co-ordinate with the person inside the radome).

13.

(Inside Person) Install the radome cap using the provided hardware.

CAUTION: Do NOT over tighten the hardware. Only tighten until the fiberglass

STARTS to flex.

14.

Apply additional caulking to fill gaps between the upper panels and the cap.

15.

Clean off excess caulking.

16.

The upper section of the radome is now complete.

17.

Place short pieces of 2”x4” boards under the perimeter of the radome top to raise it up off of the ground.

18.

Attach radome lifting brackets

(PN 122848), or other lifting arrangement, around the bottom of the upper panel assembly.

4-9

Installation

Installation

19.

Insert a 1” (or longer) bolt through a fender washer, down through the bottom flange of one of the upper panels and thread it into the threaded lip of the lifting bracket as shown in the picture.

20.

Attach three more brackets, in the same manner, so that the lifting brackets are in four equidistant points around the perimeter of the bottom flange of the

NOTE: Let the person who was working inside the upper half of the radome out. Attach web straps to the four lifting points.

21.

The upper panel assembly is now ready to lift onto the lower panels.


4.4.5.

Sub-assemble the bottom panels onto the base frame


1.

Hoist the lower section of the radome, hover above the base frame to align door panel with the hatch in the base frame

(the door and hatch are “AFT” in the radome) and set it onto the base frame.

2.

Place 4-8 bolts around the perimeter of the bottom flange of the lower half of the radome, through the flange into the base frame holes to align the holes.

3.

Loosely install all of the bolts, fender washers and nuts to attach the lower panels to the base frame using the hardware provided. Do NOT tighten the bolts at this time.

4-10


4.

Use wedges to lift the lower panel assembly up off of the riser panels about ½ inch.

5.

Install a good bead of caulking between the bottom of the lower panels and the base frame (smaller dual beads of caulking can be applied from outside and inside if you prefer) , remove the wedges, apply Loctite to and then firmly tighten all of the horizontal seam bolts.

6.

Clean excess caulking off inside and outside of the radome.

7.

Remove tape from the horizontal edges of the lower panels.

The bottom half of the radome is complete. Next you will assemble your antenna pedestal General

Assembly and install it into this portion of the radome, before putting the top half of the radome on.

4.4.6.

Sub-assemble the Antenna Pedestal

Refer to the General Assembly drawing for your system and the procedure below.

1.

Install the Base Stand, or

Mounting Spider, onto the

Base Pan using the hardware provided. Apply Loctite to and tighten the mounting bolts.

Note: As an alternative, the stand can be mounted to, and lifted with, the pedestal in step 12 below.

Installation

2.

Lift the dish up and install it onto the reflector mounting brace using the hardware provided. Assure that the orientation of the reflector is correct. Apply Loctite to and tighten the mounting bolts.

4-11

Installation

3.

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.


4.

Install the struts on the dish using the hardware provided

(this will require a ladder to reach the top strut mounting hole in the dish). Match the number sticker on the end of the strut to the number sticker near the mounting hole on the dish. Apply

Loctite to and tighten the mounting bolts.

5.

Install the feed on the struts using the hardware provided.

Match the number sticker on the end of the strut to the number sticker near the mounting hole on the scalar plate of the feed. Apply


6.

Connect the flexible waveguide section to the TX port of the feed.

7.

Use tie-wraps to attach the reflector harness and coax along the flexible and rigid waveguide, over the top of the dish, to the back side of the dish.

8.

Attach the 15 pin connector on the antenna reflector harness to the shielded Polang

Aux Relay box.

9.

Connect the IF receive coax cables from the feed to the

Receive input of the

Transceiver OR to the pedestal Modem according to the block diagram.

4-12


NOTE: Keep the reflector tied down until the ADE is lifted aboard and you are ready to balance the antenna.

10.

Loop web straps under the

Cross-Level Beam to prepare the Pedestal for lift.

Installation

11.

Hoist the Pedestal Assembly up and into the bottom half of the radome.

NOTE: The circuit breaker panel should be oriented to be facing the radome entry hatch (AFT) so that it is within easy reach for powering the equipment OFF.

Note: If the stand was not installed in step 1, install the pedestal onto the stand using the hardware provided.

Apply Loctite to and tighten the mount bolts.

12.

Install the Pedestal Assembly onto the stand (or mount the stand to the basepan, depending upon how you install the stand) using the hardware provided. Apply


The antenna pedestal General

Assembly is now completely assembled in the bottom half of the radome and is ready for you to put the top half of the radome on.

4.4.7.

Installing the Marine Air Conditioner

If a marine air conditioner was purchased with t your system;

1.

Set the marine air conditioner on the base pan aligning the vents in the bottom of the air conditioner to the cutouts in the basepan (refer to drawing 123496).

4-13


2.

Install the air, per drawing 122508, using the hardware and isolators provided in the installation kit,

3.

Install the strain reliefs as required to install AC power cable to the air conditioner.

4.4.8.

Close the 144” Radome Assembly

Refer to the Radome Assembly drawing for your system and the procedure below.

1.

Lift Upper section up over the dish & feed assembly and set it down onto the lower section.

2.

Set the upper section onto the top of the lower panels.

3.

Loosely attach the upper panels to the lower panels using the hardware provided. Do NOT tighten the bolts at this time.

4-14


4.

Use wedges to lift the upper panels off of the lower panels about ½ inch.

5.

Install a good bead of caulking between the bottom of the upper panels and the top of the lower panels ghten all of the bolts in that seam

(smaller dual beads of caulking can be applied from outside and inside if you prefer). , remove the wedges and radome lifting brackets, then firmly tighten all the bolts.

6.

Remove the tape from the upper and lower panels. All tape should now be removed from the radome.

7.

The ADE Assembly is now

complete, ready for web straps to be attached for lifting the ADE

onto the ship.

Installation

4.4.9.

Prepare the 144” Radome ADE for Lift

Refer to the Base Frame Assembly drawing for your system and the procedure below.

Please contact the vendor listed below for price and availability:

Lift-It Manufacturing Company

4780 Corona Ave.

Los Angeles, CA 90055-3808

Tel: +1 323 582 6076 www.Lift-it.com

Reference Manufacturer/Sea Tel Part Number: 119792-A: 144 Inch Radome Lifting Harness



4-15


1.

Enter the ADE and stow the antenna pedestal using the Stow Kit (provided) and the instruction in the Maintenance section of the antenna manual.

2.

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.

3.

Attach properly rated web lifting straps to the eye-bolts, or shackles.

4.

Attach Appropriate length of rope tag lines to the Base Frame.

5.

The ADE is now ready to hoist onto the ship.

4.5.

Installing The ADE

4.5.1.

Hoist



1.

Assure that the antenna is restrained before hoisting. Check that all nuts on the base frame assembly are tightened according the torque values listed below:

2.

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

3.

The radome assembly should be positioned with the BOW marker aligned as close as possible to the ship centerline. Any variation from actual alignment can be compensated with the AZIMUTH TRIM adjustment in the ACU, so precise alignment is not required.

4.5.2.

Install Antenna/Radome/Baseframe

Bolt, or weld, the legs of the radome base frame directly to the ship's deck. If the deck is uneven or not level, weld clips to the deck and attach them to the legs of the radome base frame. When completed the radome base must be level.

4.5.3.

Cooling Unit Assembly - TX SYSTEMS ONLY

If cooling unit is supplied, refer to the drawings provided for detailed instructions on assembly and installation of the cooling unit and any associated intake and exhaust diffusion ducting.

4.6.

Install BDE Equipment

4.6.1.

ACU & TMS

Refer to the Antenna Control Unit manual for installation of the ACU and the Terminal Mounting Strip.

4-16


4.6.2.

Other BDE Equipment

Refer to the vendor supplied manuals for installation of the other below decks equipment.

4.7.

Cable Terminations

4.7.1.

At The Radome

The TX and RX, or TVRO IF, cables must be inserted through the cable strain reliefs at the base of the radome.

Apply RTV to the strain relief joints and tighten the compression fittings to make them watertight. Attach the pedestal cable adapters to the TX and RX, or TVRO IF, cables from below decks. Refer to the System Block

Diagram.

AC Power cable for the Antenna Pedestal and RF Equipment is routed into the AC Power Breaker box and connected to the breaker terminals.

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.

4.7.2.

ACU & TMS

To Connect AC Power, Gyro Compass Connection and IF Input refer to the Antenna Control Unit manual.

Installation of optional (remote) Pedestal, and /or Radio, Monitor & Control connection(s) from a PC

Computer are also contained in the ACU manual.

4.7.3.

Other BDE Equipment

Refer to the vendor supplied manuals for installation of the other below decks equipment.

4.8.

Final Assembly

4.8.1.

Mount RF Equipment (TXRX Only)

Install the RF equipment on the elevation beams (TXRX Systems ONLY) Connect the TXIF & RXIF cables, RF

Transmit and Receive waveguide sections from the appropriate C-Band feed to the appropriate SSPA or

TWTA and Radio package according to the block diagram.

4.8.2.

Remove Stow Braces/Restraints

Remove the restraints from the antenna and verify that the antenna moves freely in azimuth, elevation, and cross level without hitting any flanges on the radome.

4.8.3.

Verify all assembly and Wiring connections

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

4.8.4.

Balance Antenna Pedestal

Assure that the antenna assembly is balanced front to back, top to bottom and side to side by observing that it remains stationary when positioned in any orientation. Refer to the Maintenance section for complete information on balancing the antenna.

4.9.

Power-Up The ADE

Turn Pedestal AC power breaker ON.

4.9.1.

Initialization

Turn the pedestal power supply ON. The PCU will initialize the stabilized portion of the mass to be level with the horizon and at a prescribed Azimuth and Elevation angles. The antenna will go through the specific sequence of steps to initialize the level cage, elevation, cross-level and azimuth to predetermined starting positions. Each phase must complete properly for the antenna to operate properly (post-initialization). Refer to the initialization text in the Troubleshooting section in this manual. Observe the Initialization of the antenna pedestal.

4-17


If any of these steps fail, or the ACU reports model "xx97", re-configure the PCU as described in the Setup section of this manual. If initialization still fails, this indicates a drive or sensor problem, refer to the

Troubleshooting section.

4.9.2.

Home Flag Position

Note the approximate position of the antenna relative to the bow of the ship while it is at the home switch position. This information will be used later to calibrate the relative position display of the antenna.

4.9.3.

BDE

Turn Power ON to the ACU. Record the power-up display, Master (ACU) Model & Software version and the

Remote (PCU) Model & Software version.

4.10.

Setup

Refer to the Setup information in the next section of this manual and in the Setup section of your ACU Manual.

4-18

9797B-39 Ku-Band TX/RX Antenna Setup

5.

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.

5.1.

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 above decks triangulates an accurate location, but you may enter this information manually to begin. If your gyro source is providing Heading information in any format other than

NMEA-0183 format, you will have to enter in the initial Ship’s Heading position, the Gyro Compass will then keep the

ACU updated.

Set the Satellite information, for the satellite you will be using. The receiver settings are especially important. At this point you should be able to target the desired satellite. Continue with the setup steps below to optimize the parameters for your installation.

5.2.

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.

Refer to “Optimizing Targeting” in the Setup section of this manual for further details on the parameters set.

To enable this function, the Antenna MUST be actively tracking the satellite with positive SAT ID: After locating the satellite wait at least 30 seconds before performing the AUTO TRIM feature, this will allow sufficient time for the antenna to peak up on signal. It is equally important that you verify that the system is tracking the CORRECT satellite

(verify video is produced on the Televisions in a TVRO system or verify a RX lock indication on the satellite modem in a

VSAT system).

While in the AUTO TRIM sub-menu, press the LEFT arrow key to bring start the calibration procedure, the display should read AUTO TRIM SETUP, press the ENTER key to submit. AUTO TRIM SAVED will be displayed, indicating the proper AZ and EL trims were submitted to RAM. This does not save these parameters to NVRAM, in order to save to memory, continue down through the setup mode parameters until the SETUP SAVE NEW PARAMETERS sub menu is displayed. Press the RIGHT arrow and then press the ENTER key. The display should now report that the parameters were saved.

NOTE: The AUTO TRIM feature only will work if your system is actively tracking a satellite (AGC above threshold and positive SAT ID, internal NID match or external RX lock received, has been established). If any of the previous conditions are not met, AUTO TRIM LOCKED will be displayed on the front panel, indicating that the AUTO TRIM

Feature is not enabled. From the AUTO TRIM SETUP screen, press any MODE key (DAC2302) or NEXT key (DAC2202) without hitting ENTER to escape this screen without submitting the new AZ and EL Trim values.

5.3.

Manually Optimizing Targeting

First, assure that all of your Ship & Satellite settings in the ACU are correct. Target the desired satellite, immediately turn Tracking OFF, and record the Azimuth and Elevation positions in the “ANTENNA“ display of the ACU (these are the Calculated positions). Turn Tracking ON, allow the antenna to “Search” for the targeted satellite and assure that it has acquired (and peaks up on) the satellite that you targeted. Allow several minutes for the antenna to “peak” on the signal, and then record the Azimuth and Elevation positions while peaked on satellite (these are the Peak positions).

Again, assure that it has acquired the satellite that you targeted!

Subtract the Peak Positions from the Calculated Positions to determine the amount of Trim which is required. Refer to the ACU Setup information to key in the required value of Elevation Trim. Continue with Azimuth trim, then re-target the satellite several times to verify that targeting is now driving the antenna to a position that is within +/- 1.0 degrees of where the satellite signal is located.

EXAMPLE: The ACU targets to an Elevation position of 30.0 degrees and an Azimuth position of 180.2 (Calculated), you find that Peak Elevation while ON your desired satellite is 31.5 degrees and Peak Azimuth is 178.0. You would enter an EL TRIM value of –1.5 degrees and an AZ TRIM of +2.2 degrees. After these trims values had been set, your peak on satellite Azimuth and Elevation displays would be very near 180.2 and 30.0 respectively.

5-1

Setup 9797B-39 Ku-Band TX/RX Antenna

5.1.

Sat Skew setting

The Satellite Skew setting in the Satellite – Tracking Receiver sub-menu (prior to NID) is used to enter the skew of the satellite to optimize polarity angle.

This feature will replace the use of POL OFFSET to optimize polarization of the feed. From here on out, POL OFFSET will serve to calibrate the feed itself. Think of it as mechanical calibration. We will recommend that you target a satellite that is of your same longitudinal position (ie for us here in Concord we would target 122W). Drive the reflector to 0 or 5 degrees elevation (this is so you can easily view the feed). Drive the feed to vertical and then place a level bubble on the LNB. Add or subtract POL OFFSET as required to center the air bubble. Then save this parameter.

Cross-pol isolation tests will now require the operator to increase or decrease the SAT SKEW parameter. Each digit represented on this screen represents one whole degree of feed drive. This parameter addition was a direct response to item #3 below which is making the ACU’s work with Satellite Modems that are OpenAMIP compatible.

5.2.

Polarity Angle (POLANG) Parameters

First of all make sure that the polang parameters are set correctly:

1.

POL TYPE – should be set to 0072 (Auto-Pol mode).

2.

POL OFFSET – This is initially set to factory default (0040) but will be incremented, or decremented, to calibrate the feed to the horizon with a level (bubble or digital).

3.

POL SCALE – Leave this at the factory default setting of 0090.

4.

Go to the TX POLARITY parameter in the Setup menu of the ACU and set this parameter to your assigned

Transmit polarity (2=Horizontal or 4=Vertical).

5.

Target your desired satellite (as provided by you airtime provider).

6.

Verify the system has acquired the correct satellite, else continue searching until the correct satellite is acquired, and set your satellite modem (or spectrum analyzer) to view its signal level display.

7.

Allow tracking to peak the satellite signal.

8.

SAT SKEW – This setting will be incremented, or decremented, to optimize the polarity to peak the received satellite signal, and later to do cross-pol isolation with the airtime provider, network operation center or satellite provider.

5.3.

Optimizing Auto-Polarization Cross-Pol Isolation

During commissioning, under guidance from the network operation center, you will be adjusting to minimize the effect of your transmission on the opposite polarization which maximizes your Cross-Pol isolation. Contact your satellite provider to help you (over the phone) to optimize the polarity angle for maximum Cross-Pol isolation (this optimizes your transmit polarity and is much more accurate than trying to optimize your receive polarity).

1.

Verify that tracking is ON and that the antenna is peaked on your targeted satellite (targeting calculates the azimuth, elevation and polarization angles).

2.

Follow your service provider technicians instructions to set the modem to begin transmitting a CW (pure carrier) signal.

3.

Go to the SAT SKEW parameter in the Satellite menu of the ACU.

4.

Press the LEFT arrow to edit the current value.

5.

While under direction of the technician (on the phone), press the UP arrow to increment or the DOWN arrow to decrement the value and then hit the ENTER key to adjust the feed.

6.

The technician should indicate whether the adjustment you made improved, or worsened, the cross-pol isolation. If it improved he will have you make another small adjustment in the same direction. If it worsened he will have you make a small adjustment in the opposite direction.

7.

Press the RIGHT key again, make the next change as directed and hit ENTER to carry out the adjustment.

8.

Repeat this process of making small adjustments until the technician confirms that cross-pol isolation is optimized.

9.

Save your new SAT SKEW value.

5.4.

Calibrating Relative Antenna Position (Home Flag Offset)

During initialization, azimuth drives the CW antenna until the Home Switch is contacted, which “presets” the relative position counter to the value stored in the Home Flag Offset. This assures that the encoder input increments/decrements from this initialization value so that the encoder does not have to be precision aligned.

5-2


The Home Switch is a micro switch with a roller arm which is actuated by cam mounted on the azimuth driven sprocket, or it is a hall sensor which is actuated by a magnet mounted on the azimuth driven sprocket, which produces the “Home Flag” signal.

The Home Flag Offset is a value saved in NVRam (Non-

Volatile RAM) in the PCU. This value is the relative position of the antenna when the home switch is engaged. Presetting the counter to this value assures that when the antenna is pointed in-line with the bow of the ship the counter will read

000.0 Relative (360.0 = 000.0).

In most cases when the antenna stops at the home flag, it will be pointed in-line with the Bow of the ship. In these cases Home Flag Offset (HFO) should be set to zero. When

“Optimizing Targeting” small variations (up to +/- 5.0 degrees) in Azimuth can be corrected using If it AZ TRIM as described in the Optimizing Targeting procedure above.

Figure 5-1 Antenna stops In-line with

Bow

Large variations in Azimuth position indicate that the Relative position is incorrect and should be “calibrated” using the correct HFO value instead of an Azimuth Trim offset. This is especially true if sector blockage mapping is used.

If the antenna stops at the home flag, but it is NOT pointed in-line with the Bow of the ship, it is important to assure that the antennas actual position (relative to the bow of the ship) is the value that gets “preset” into the Relative position counter. By saving the antennas actual Relative position when at the home flag into HFO, you have calibrated the antenna to the ship.

5.4.1.

To Calculate HFO:

If Targeting has been optimized by entering a large value of AZ TRIM; First, verify that you are able to repeatably accurately target a desired satellite (within +/- 1.0 degrees). Then you can use the AZ TRIM value to calculate the value of HFO you should use (so you can set AZ TRIM to zero). AZ Trim is entered as the number of tenths of degrees. You will have to convert the AZ TRIM value to the nearest whole degree

(round up or down as needed). Calculated HFO value is also rounded to the nearest whole number.

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.

If AZ TRIM was a negative value: HFO = ((360-TRIM) / 360)) x 255 Example: AZ TRIM = -0450

(minus 45 degrees). HFO = ((360 – 45) / 360)) x 255 = (315 / 360) x 255 = 0.875 x 255 = 223.125 round of to 223.

If Targeting has NOT been optimized, allow the antenna to initialize to its home flag position. Visually compare the antennas pointing to the bow-line of the ship (parallel to the Bow). Note the antennas position relative to the Bow. If it appears to be very close to being parallel to the bow, HFO will probably not be needed and you can proceed with Optimizing

Targeting. If it is NOT close, initialization was driving the azimuth CW, note if the antenna appears to have stopped before it got to the Bow or if it went past the

Bow. You may be able to guess an approximate amount of how many degrees the antenna is from the bow. This is only intended to help you initially find the satellite (which direction you will have to drive and approximately how far you will have to drive).

Refer, in general terms, to the Optimizing Targeting procedure.

If the antenna stopped before it got to the bow-line; When you initially target a satellite, the antenna will also stop prior to the satellite position, so you that will have to drive the Azimuth of the antenna UP to actually find the satellite. Using the same basic procedure as in the Optimizing

Targeting paragraph, target the satellite and

Figure 5-2 Antenna stopped before the

Bow

5-3


record the “Calculated” Azimuth position that the antenna was driven to. Drive UP until you find the satellite, positively identify that you are on the satellite you targeted and allow tracking to peak the antenna position. Record the “Peak” Azimuth position. Subtract the “Peak” position from the

“Calculated” position to determine the number of degrees of AZ TRIM that would be required.

Example: In this new installation, I target my desired satellite and record the Calculated Azimuth to be 180.5. I drive UP and finally find my desired satellite at a Peak Azimuth of 227.0 degrees. I subtract Peak from Calculated and difference to be –46.5 degrees, therefore the actual Relative position that needs to be preset into the counter when the antenna is at the Home Flag is 313.5.

HFO = ((360-46.5) / 360)) x 255 = (313.5 / 360) x 255 = 0.87 x 255 = 222.06 which I round down to

222.

If the antenna went past the bow-line; When you initially target a satellite, the antenna will also go past the satellite position, so that you will have to drive the Azimuth of the antenna DOWN to actually find the satellite. Using the same basic procedure as in the Optimizing Targeting paragraph, target the satellite and record the “Calculated” Azimuth position that the antenna was driven to.

Drive DOWN until you find the satellite, positively identify that you are on the

satellite you targeted and allow tracking to peak the antenna position. Record the

“Peak” Azimuth position. Subtract the

“Peak” position from the “Calculated” position to determine the number of degrees of AZ TRIM that would be required. . Refer to the calculations above to determine the HFO you should use for this antenna.

Example: In this new installation, I target my desired satellite and record the

Calculated Azimuth to be 180.0. I drive

DOWN and finally find my desired satellite at a Peak Azimuth of 90.0 degrees. I subtract Peak from Calculated and difference to be +90.0 degrees, therefore the actual Relative position that needs to

Figure 5-3 Antenna stops past the Bow

be preset into the counter when the antenna is at the Home Flag is 90.0. HFO = ((90.0) / 360)) x 255

= 0.25 x 255 = 63.75 which I round up to 64.

5.4.2.

To Enter the HFO value:

To enter the calculated HFO value, press Antenna Control Unit MODE key repeatedly, enter the password ant the REMOTE AUX menu and then continue pressing the MODE key until you have selected the REMOTE

COMMAND window.

In the REMOTE COMMAND window, key in ".78” and hit the ENTER key. "N0000" should appear in the command window. Key in 6 and the three digit HFO value from 000 to 255 (corresponding to 0 to 360 degrees) that you calculated above. Press ENTER to send the HFO value command to the PCU. Press ENTER several times to select the REMOTE PARAMETERS display. Press the UP arrow key and then press the ENTER to save the HFO value in the PCUs NVRAM.

If you want to find out what the current HFO value is key in 6999 and hit ENTER.

EXAMPLE: In the “Antenna stopped before the Bow” example above, the HFO calculated was 222. To enter this value:

1.

Key in "6222" to set HFO to 222. The display should now show "N0222".

2.

Press ENTER to send this HFO to the PCU.

3.

Press ENTER (or MODE) several times to select REMOTE PARAMETERS. Press UP arrow and then

ENTER to save the HFO to NVRAM in the PCU.

4.

Press ANTENNA twice, and manually drive the antenna toward the Home Switch (or re-Initialize the antenna). The Home Switch must actuate to preset the counter to the new value before you target the satellite again! Now, whenever the Home Switch is actuated, the new value of HFO (the actual

Relative position of the antenna) will be loaded into the Relative counter.

5-4


5.

If there was previously a positive or negative value of AZ TRIM, set it to zero and SAVE NEW

PARAMETERS.

6.

Follow the Optimizing Targeting procedure to re-evaluate small corrections in EL TRIM and AZ TRIM and verify that you can repeatedly target a desired satellite (within +/- 1 degree, or less).

If your antenna is periodically blocked by some part of the ships structure, you may want to refer to the

Radiation Hazard and Blockage Mapping section below.

5.4.3.

Radiation Hazard and Blockage Mapping (AZ LIMIT parameters)

The ACU can be programmed with relative azimuth sectors (zones) where blockage exists or where transmit power would endanger personnel who are frequently in that area. Your ACU software may allow you to set four zones or it may only three zones and include +5 volt polarization.

When the AZ LIMIT parameters are set to create these ZONES, up to four, several things happen when the antenna is within one of the zones:

7.

Tracking continues as long as the AGC value is greater than the Threshold value. When the AGC value drops below Threshold, the antenna will wait “Search Delay” parameter amount of time and then re-target the satellite you targeted last (if 4 value is included in SYSTEM TYPE). Timeout and re-target will continue until the satellite is re-acquired and tracking can resume.

8.

“BLOCKED” will be displayed in the TRACKING window wherever the antenna is inside one of the zones.

9.

A contact closure to ground (or an open if the blockage logic is reversed – See SYSTEM TYPE 16 value) is provided on the SW2 terminal of the Terminal Mounting Strip. This Switch output provides a “Blocked”, “RF Radiation Hazard” or “FCC TX Mute” logic output. When the antenna exits the zone it will be on satellite, tracking and the SW2 logic contact closure will open.

The lower and upper limits are user programmable and are stored in NVRAM within the ACU parameter list.

AZ LIMIT 1 is the Lower Relative AZ limit (this is the more counter-clockwise of the two points, even if it is numerically larger). AZ LIMIT 2 is the Upper Relative AZ limit (the more clockwise of the two points) for pattern mapping of ZONE 1. Enter the elevation value that represents the top of the blockage between the two azimuth limit points in the EL LIMIT 12 parameter.

AZ LIMIT 3 is the Lower Relative AZ limit (CCW point) and AZ LIMIT 4 is the Upper Relative AZ limit

(CW point) for pattern mapping of ZONE 2. Enter the elevation value that represents the top of the blockage between the two azimuth limit points in the EL LIMIT 34 parameter.


(CW point) for pattern mapping of ZONE 3. Enter the elevation value that represents the top of the blockage between the two azimuth limit points in the EL LIMIT 56 parameter.


(CW point) for pattern mapping of ZONE 4. Enter the elevation value that represents the top of the blockage between the two azimuth limit points in the EL LIMIT 78 parameter. If your ACU software includes 5 volt polarization you will not see these AZ & EL LIMIT parameters.

CAUTION: The Lower Relative AZ limit is the more counter-clockwise of the two points (even if it is numerically larger) and the

Upper Relative AZ limit is the more clockwise of the two points. If you enter the two relative points incorrectly, Tracking and Searching will be adversely affected.

The ACU provides a contact closure to ground on the SW2 terminal of the Terminal Mounting Strip when the antenna is pointed within any one of the blockage/hazard zones or the system is searching, targeting, unwrapping or is mis-pointed by 0.5 degrees or more (FCC TX Mute function for Transmit/Receive systems

only). The contact closure is a transistor switch with a current sinking capability of 0.5 Amp. Pressing the 5 key when the TRACKING window is selected can simulate a manual BLOCKED condition to test SW2 logic output. UP arrow key is pressed to turn the simulated blocked condition OFF.

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.

In a “Dual Antenna” installation, this logic output(s) is used to control Dual Antenna Arbitrator panel of coax switch (or switches) to switch the source inputs to the matrix switch from Antenna “A” to Antenna “B”, and vice versa.

When used as simple “RF Radiation Hazard” logic output for a single Sea Tel TXRX antenna, this output could be used to suppress RF transmissions while the antenna is pointed where people would be harmed by

5-5


the transmitted microwave RF power output. The SW2 output would be interfaced to the satellite modem to

disable the TX output signal from the Satellite TXRX Modem whenever the antenna is within the RF

Radiation Hazard zone(s).

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. The SW2 output would be interfaced to the satellite modem to disable/mute the

TX output signal from the Satellite TXRX Modem. When the mute condition is due to antenna mis-pointing, it will not un-mute until the pointing error of the antenna is within 0.2 degrees. The default output is contact closure to ground when the antenna is mis-pointed, therefore provides a ground to “Mute” the satellite modem from the SW2 terminal of the Terminal Mounting Strip. If your satellite modem requires an open to

“Mute”, refer to SYSTEM TYPE parameter 16 value to reverse the output logic from the ACU.

Programming instructions:

Determine the Relative AZ positions where blockage, or RF Radiation Hazard, exists. This may be done by monitoring the received signal level and the REL display readings while the ship turns or by graphing the expected blockage pattern. Elevation of the antenna in normal use also must be taken into consideration. A

Mast or other structure may cause blockage at low elevation angles, but may not cause blockage when the antenna is at higher elevation angles where it is able to look over the structure. Up to four zones may be mapped. Only zones which are needed should be mapped (in AZ LIMIT pairs).

In unlimited antenna systems the Relative position of the antenna must have been calibrated by properly setting the Home Flag Offset (HFO) value in the PCU. The HFO calibrates Relative to display 0000 when the antenna is pointed in-line with the bow of the boat/ship (parallel to the bow).

Convert the relative readings to AZ LIMIT/EL LIMIT values by multiplying by 10. Enter the beginning of the

first blockage region as AZ LIMIT 1 and the end of the region (clockwise direction from AZ LIMIT 1) as AZ

LIMIT 2 parameters in the ACU. If needed, repeat setting AZ LIMIT 3 & 4 for a second ZONE and then AZ

LIMIT 5 & 6 if a third ZONE is needed. All unneeded zone AZ LIMIT pairs must be set to 0000. Set the upper elevation limit of each blockage zone (also entered in degrees multiplied by 10).

EXAMPLE 1 - Three blockage Zones: A ship has a Sea Tel antenna mounted on the port side and an Inmarsat antenna mounted on the starboard side. A mast forward, the Inmarsat antenna to starboard and an engine exhaust stack aft form the three zones where satellite signal is blocked (as shown in the graphic). In this example zone 1 is caused by the mast, zone 2 is from the Inmarsat antenna, zone 3 is from the stack and zone 4 is not needed:

ZONE 1 begins (AZ LIMIT 1) at 12 degrees

Relative and ends (AZ LIMIT 2) at 18 degrees Relative. Multiply these Relative positions by 10. Enter AZ LIMIT 1 value of

0120 and AZ LIMIT 2 value of 0180. In this case the mast height only causes blockage up to an elevation of 50 degrees, so we set EL LIMIT 12 to 0500. If the antenna is between these two AZ Limit points but the elevation is greater than 50 degrees, the antenna will no longer be blocked.

ZONE 2 begins (AZ LIMIT 3) at 82 degrees Relative and ends (AZ LIMIT 4) at 106 degrees Relative.

Multiply these Relative positions by 10. Enter AZ LIMIT 3 value of 0820 and AZ LIMIT 4 value of

1060. In this case the Inmarsat antenna height only causes blockage up to an elevation of 12 degrees, so we set EL LIMIT 34 to 0120. If the antenna is between these two AZ Limit points but the elevation is greater than 12 degrees, the antenna will no longer be blocked.



1720. In this case the stack antenna height only causes blockage up to an elevation of 36 degrees, so we set EL LIMIT 56 to 0360. If the antenna is between these two AZ Limit points but the elevation is greater than 36 degrees, the antenna will no longer be blocked.

5-6


ZONE 4 is not needed. Enter AZ LIMIT 7 value of 0000 and AZ LIMIT 8 value of 0000. Set EL LIMIT

78 to 0000. If your ACU software includes 5 volt polarization you will not see these AZ & EL LIMIT parameters.

EXAMPLE 2 - Three blockage Zones, Dual

Antenna configuration: A ship has 2 Sea Tel antennas, “Antenna A” mounted on the port side and “Antenna B” mounted on the starboard side.

Antenna A is designated as the master antenna.

The mast forward, Antenna B to starboard and the engine exhaust stack aft form the three zones where satellite signal is blocked from Antenna A.

The SW2 logic output from Antenna A (ACU A) and Antenna B (ACU B) are used to control a “Dual

Antenna Arbitrator” panel of coax switches which route satellite signal from the un-blocked antenna to the inputs of the matrix switch. If both antennas are tracking the same satellite, they will not both be blocked at the same time. The logic output will switch to provide satellite signal to the below decks equipment from Antenna A when it is not blocked and will switch to provide satellite signal from Antenna B whenever Antenna

A is blocked. The switches will not change state if both antennas are blocked, or if both are on satellite.

Antenna A is the same as the previous example and its ACU would be set to those AZ LIMIT values.

Antenna B ACU would be set to:

In this example Antenna B zone 1 is caused by the stack, zone 2 is from Antenna A, zone 3 is from the mast and zone 4 is not needed.



2040. In this case the stack height only causes blockage up to an elevation of 42 degrees, so we set

EL LIMIT 12 to 0420. If the antenna is between these two AZ Limit points but the elevation is greater than 42 degrees, the antenna will no longer be blocked.



2780. In this case the Antenna B height only causes blockage up to an elevation of 12 degrees, so we set EL LIMIT 34 to 0120. If the antenna is between these two AZ Limit points but the elevation is greater than 12 degrees, the antenna will no longer be blocked.



3480. In this case the mast height only causes blockage up to an elevation of 41 degrees, so we set

EL LIMIT 56 to 0410. If the antenna is between these two AZ Limit points but the elevation is greater than 12 degrees, the antenna will no longer be blocked.



5-7


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.

In this example the Stack does NOT block the satellite, only the mast forward does. In this example zone 1 is caused by the mast, zone 2, 3 and 4 are not needed:

ZONE 1 begins (AZ LIMIT 1) at 352 degrees

Relative and ends (AZ LIMIT 2) at 8 degrees

Relative. Multiply these Relative positions by

10. Enter AZ LIMIT 1 value of 3520 and AZ

LIMIT 2 value of 0080. In this case the mast height only causes blockage up to an elevation of 52 degrees, so we set EL LIMIT

12 to 0520. If the antenna is between these two AZ Limit points but the elevation is greater than 52 degrees, the antenna will no longer be blocked.

ZONE 2 is not needed. Enter AZ LIMIT 3 value of 0000 and AZ LIMIT 4 value of

0000. Set EL LIMIT 34 to 0000.

ZONE 3 is not needed. Enter AZ LIMIT 5 value of 0000 and AZ LIMIT 6 value of 0000. Set EL LIMIT 56 to 0000.



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. These two blockage areas have wide azimuth blockage at lower elevations and then a narrower azimuth area of blockage extends up to a higher value of elevation.

ZONE 1 begins (AZ LIMIT 1) at 334 degrees Relative and ends (AZ LIMIT 2) at

026 degrees Relative. Multiply these

Relative positions by 10. Enter AZ LIMIT

1 value of 3340 and AZ LIMIT 2 value of

0260. In this case the mast height only causes blockage up to an elevation of 40 degrees, so we set EL LIMIT 12 to 0400.

If the antenna is between these two AZ

Limit points but the elevation is greater than 40 degrees, the antenna will no longer be blocked.






If the antenna is between these two AZ Limit points but the elevation is greater than 70 degrees, the antenna will no longer be blocked.

5-8







If the antenna is between these two AZ

Limit points but the elevation is greater than 30 degrees, the antenna will no longer be blocked.


187 degrees Relative. Multiply these Relative positions by 10. Enter AZ LIMIT 7 value of 1730 and

AZ LIMIT 8 value of 1870. In this case the mast height only causes blockage up to an elevation of

55 degrees, so we set EL LIMIT 78 to 0550. If the antenna is between these two AZ Limit points but the elevation is greater than 55 degrees, the antenna will no longer be blocked. If your ACU software includes 5 volt polarization you will not see these AZ & EL LIMIT parameters.

5.5.

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:

2 Vertical Transmit Polarity

4 Horizontal Transmit Polarity

If the Transmit polarity in the center of the travel range is horizontal, use the following entries:

2 Horizontal Transmit Polarity

4 Vertical Transmit Polarity

5.6.

TRACK DISP

Your system MUST be fitted with quad-band LNB(s) for this function to change the frequency range of the LNB(s).

This parameter set the selections that the user will see in the Tracking - Band Selection menu. Band Selection must be set to the appropriate selection for Tracking to operate properly.

Band selection controls the local logic output state of SW1 output terminal on the Terminal Mounting Strip PCB and

remote C/Ku relays (or other switches) on the antenna pedestal.

The factory default selections and SW1 status for your 9797B is listed in the following table:

Setting

0170

Displayed band selection

Band1

Band2

Band3

Band4

ADE Band Select Parameters

(Tone, Voltage & Aux Status)





TMS SW1

Status

Open

Open

Short

Short

When the SW1 output is shorted to ground a current sink of 0.5 amps max is provided to control below decks band selection tone generators or coax switches. When SW1 output is open it is a floating output.

5-9


5.7.

ACU Factory Default Parameter Settings – Series 97B & 00B Antennas

The following table shows the factory default parameters for the ACU interfaced to a Series 97B/00B 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.

PARAMETER C-Band

DishScan

Ku-Band

DishScan

My Parameters

EL TRIM

AZ TRIM

AUTO THRES

EL STEP SIZE

AZ STEP SIZE

STEP INTEGRAL

SEARCH INC

SEARCH LIMIT

SEARCH DELAY

SWEEP INC

SYSTEM TYPE

GYRO TYPE

POL TYPE

POL OFFSET

POL SCALE

AZ LIMIT 1

AZ LIMIT 2

EL LIMIT 12

AZ LIMIT 3

AZ LIMIT 4

EL LIMIT 34

AZ LIMIT 5

AZ LIMIT 6

EL LIMIT 56

5V OFFSET

5V SCALE

TRACK DISP

TX POLARITY

0

0

100

0

0

0

10

200

5

100

90

0

0

90

0

0

90

0

0

90

30

0040

0005 *

2

72

30

0

0

Refer to TRACK DISP parameter

2

* Modem Lock input & Modem TX Mute functions are NOT set; refer to SYSTEM TYPE parameter information.

5-10

9797B-39 Ku-Band TX/RX Antenna Functional Testing

6.

Functional Testing

6.1.

ACU / Antenna System Check

1.

Turn ACU power ON. Turn antenna Pedestal/RF Equipment power ON

2.

Press RESET on the ACU front panel of the ACU. 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" and the PCU software version number. If the display shows "REMOTE INITIALIZING” wait for approximately 2 minutes for the antenna to complete initialization and report the Antenna Model and PCU software version.

3.

Press the Ship, Satellite, Antenna and Status keys repeatedly to display their respective menus. This verifies that the displays change in the correct response to the keys.

If “REMOTE NOT RESPONDING" is displayed, or the displays do not change when the main menu keys are pressed, refer to the Troubleshooting Section of your ACU manual. Return to normal operation OR Continue with the next functional test.

6.2.

Latitude/Longitude Auto-Update check

This verifies that the GPS antenna input to the system is automatically updating the position information.

1.

Press SHIP twice to select the Latitude entry menu. Press the 0 (zero) key on the numeric keypad and then press ENTER. If automatic updating is working properly the Latitude value display will return to the current ships Latitude position within a few seconds.

2.

Press SHIP again to select the Longitude entry menu. Press the 0 (zero) key on the numeric keypad and then press ENTER. If automatic updating is working properly the Longitude value display will return to the current ships Longitude position within a few seconds.

If the displays do not update, check your cable connections, assure that the SYSTEM TYPE parameter sum includes the

8 value and then refer to the Troubleshooting Section of this manual for AUX SERIAL PORT checks. Return to normal operation OR Continue with the next functional test.

6.3.

Heading Following

Verify that the heading display in the ACU is following the ships Gyro Compass.

1.

Press SHIP repeatedly until the Heading display is selected. When Left and right values are displayed, left is the response from the pedestal and right in the local input from the gyrocompass.

2.

Have another person call out the Gyro Compass heading to you while you observe the Heading display. The

Heading display should consistently be exactly the same as the Gyro Compass value. If the heading display changes incorrectly or the red ERROR LED illuminates on the front panel, refer to the Troubleshooting section of the ACU manual.

3.

Return to normal operation OR Continue with the next functional test.

If the antenna does not drive properly, refer to the Troubleshooting Section of your ACU manual. Return to normal operation OR Continue with the next functional test.

6.4.

Azimuth & Elevation Drive

This verifies that the antenna moves in the correct response to the keys.

1.

Press the Antenna key twice to display the Azimuth menu.

2.

Press the AUX1 key to toggle Tracking OFF. Press the UP arrow key repeatedly and verify that the antenna moves up in Azimuth.

3.

Press the DOWN arrow key repeatedly and verify that the antenna moves down in Azimuth.

4.

Press the Antenna key once to display the Elevation menu.

5.

Press the UP arrow key repeatedly and verify that the antenna moves up in elevation.

6.

Press the DOWN arrow key repeatedly and verify that the antenna moves down in elevation.

6-1

Functional Testing 9797B-39 Ku-Band TX/RX Antenna

6.5.

Four Quadrant Test Tracking

Four Quadrant Tracking Test is the best way to test tracking (regardless of which tracking mode is being used). This tests each of the 4 quadrants (UP, DOWN, LEFT & RIGHT of peak signal AZ/EL pointing) to assure that the tracking mode being used drives the dish back to peak satellite signal level. Note: Return to peak should take about the same amount of time from each of the four quadrants.

1.

Press AUX1 to Turn Tracking OFF. Press ANTENNA twice to select Azimuth entry menu and note current

AGC level. Press UP arrow key repeatedly until AGC falls about 100 counts, note current AZ position (You should have moved the antenna 1/3 to ¾ of a degree depending on antenna size and frequency band).

Observe the DishScan signaling in the lower left of the display, if the system is operating in DishScan tracking mode the signaling should be 4’s. Press AUX1 to turn tracking ON and verify that the antenna does return to the previous AZ position and the peak AGC level.

2.

Press AUX1 to Turn Tracking OFF. Press DOWN arrow key repeatedly until AGC falls about 100 counts, note current AZ position (You should have moved the antenna 1/3 to ¾ of a degree depending on antenna size and frequency band). Observe the DishScan signaling in the lower left of the display, if the system is operating in DishScan tracking mode the signaling should be 6’s. Press AUX1 to turn tracking ON and verify that the antenna does return to the previous AZ position and the peak AGC level.

3.

Press AUX1 to Turn Tracking OFF. Press ANTENNA to select Elevation entry menu and note current AGC level. Press UP arrow key repeatedly until AGC falls about 100 counts, note current EL position (You should have moved the antenna 1/3 to ¾ of a degree depending on antenna size and frequency band). Observe the

DishScan signaling in the lower left of the display, if the system is operating in DishScan tracking mode the signaling should be 2’s. Press AUX1 to turn tracking ON and verify that the antenna does return to the previous EL position and the peak AGC level.

4.

Press AUX1 to Turn Tracking OFF. Press ANTENNA to select Elevation entry menu and note current AGC level. Press DOWN arrow key repeatedly until AGC falls about 100 counts, note current EL position (You should have moved the antenna 1/3 to ¾ of a degree depending on antenna size and frequency band).

Observe the DishScan signaling in the lower left of the display, if the system is operating in DishScan tracking mode the signaling should be 8’s. Press AUX1 to turn tracking ON and verify that the antenna does return to the previous EL position and the peak AGC level.

If the antenna does not drive properly or if Tracking does not return the signal to “peak” refer to the Troubleshooting

Section of this manual.

6-2

9797B-39 Ku-Band TX/RX Antenna Maintenance and Troubleshooting

7.

Maintenance and Troubleshooting

This section describes the theory of operation to aid in troubleshooting and adjustments of the antenna system. Also refer to the Troubleshooting section of your ACU manual for additional troubleshooting details.

WARNING: Electrical Hazard – Dangerous AC Voltages exist in the Breaker Box and the Antenna

Pedestal Power Supply. Observe proper safety precautions when working inside the Antenna

Breaker Box or Power Supply.


The ultimate responsibility for safety rests with the facility operator and the individuals

who work on the system.

WARNING: RF Radiation Hazard - Prior to working on the stabilized antenna system, the power to the

transmit/receive equipment must be locked out and tagged. Turning OFF power to the

Antenna Control Unit does NOT turn Transmit power output OFF.




7.1.

Warranty Information

Sea Tel Inc. supports its Series 97, 00, 06 and 07 systems with a ONE YEAR warranty on parts and 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

(ACU).

What’s NOT Covered by the Limited Warranty?

It does not include Transmit & Receive RF Equipment, Modems, Multiplexers or other distribution equipment, whether or not supplied by Sea Tel commonly used in Satellite Communications (TXRX) Systems. These equipments are covered by the applicable warranties of the respective manufacturers.

Factory refurbished components used to replace systems parts under this warranty are covered by this same warranty as the original equipment for the balance of the original warranty term, or ninety (90) days from the date of replacement, whichever occurs last. Original Installation of the Series 97 system must be accomplished by or under the supervision of an authorized Sea Tel dealer for the Sea Tel Limited Warranty to be valid and in force.

Should technical assistance be required to repair your system, the first contact should be to the agent/dealer you purchased the equipment from.

Please refer to the complete warranty information included with your system.

7.2.

Recommended Preventive Maintenance

Ensure that all of the normal operating settings (LAT, LON, HDG, SAT and al of the Tracking Receiver settings) are set correctly. Refer to the Functional Testing section to test the system.

7-1

Maintenance and Troubleshooting 9797B-39 Ku-Band TX/RX Antenna

7.2.1.

Check ACU Parameters

Assure that the parameters are set correctly (you may wish to record them in the Factory Default Settings, in section 5 of this manual).

7.2.2.

Latitude/Longitude Auto-Update check

Refer to the Latitude & Longitude Update check procedure in the Functional Testing section of this manual.

7.2.3.

Heading Following

Refer to the Heading Following verification procedure in the Functional Testing section of this manual.

7.2.4.

Azimuth & Elevation Drive

Refer to the Azimuth & Elevation Drive check procedure in the Functional Testing section of this manual.

7.2.5.

Test Tracking

Refer to the four quadrant Tracking check procedure in the Functional Testing section of this manual.

7.2.6.

Visual Inspection - Radome & Pedestal

Conduct a good, thorough, visual inspection of the radome and antenna pedestal. Visually inspect the inside surface of the radome top and of the antenna pedestal. Look for water or condensation, rust or corrosion, white fiberglass powder residue, loose wiring connections, loose hardware, loose or broken belts or any other signs of wear or damage.

1.

Radome Inspection - All the radome flanges are properly sealed to prevent wind, saltwater spray and rain from being able to enter the radome. Re-seal any open (“leaky”) areas with marine approved silicone sealant. If heavy condensation, or standing water, is found inside the radome, isolate and seal the leak, and then dry out the radome. Small (1/8 inch) holes may be drilled in the base pan of the radome to allow standing water to “weep” out.

2.

Antenna Pedestal Inspection - The shock/vibration springs and/or wire rope Isolators should not be frayed, completely compressed, or otherwise damaged. The plated and painted parts should not be rusted or corroded. The harnesses should not be frayed and all the connectors should be properly fastened and tightened. All hardware should be tight (no loose assemblies or counter-weights).

Replace, re-coat, repair and/or tighten as necessary.

7.2.7.

Mechanical Checks

Turn the pedestal power supply OFF

1.

Inspect inside of radome for signs that the dish or feed have been rubbing against the inside of the fiberglass radome.

2.

Rotate the pedestal through its full range of azimuth motion. The antenna should rotate freely and easily with light finger pressure.

3.

Rotate the pedestal through full range of elevation rotation. The antenna should rotate freely and easily with light finger pressure.

4.

Rotate the pedestal through full range of cross-level rotation. The antenna should rotate freely and easily with light finger pressure.

5.

Rotate the level cage through the full 90 degrees of rotation from CCW stop to CW stop. The level cage antenna should rotate freely and easily with light finger pressure. Attached cables should not cause the cage to spring back more that a few degrees from either stop when released.

6.

Inspect all drive belts for wear (black dust on/under the area of the belt).

7.

Inspect AZ Drive chain. IF chain is beginning to show signs of rust or corrosion, apply a light coat of light duty oil to the chain. Wipe excess oil off to leave a light coating on the chain. DO NOT

over-lubricate.

7.2.8.

Check Balance

Check the balance of the antenna, re-balance as needed (refer to the Balancing the Antenna procedure below).

7-2


7.2.9.

Observe Antenna Initialization

Observe the Antenna Initialization as described in the Troubleshooting section below.

7.3.

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). Based on the desired mode of operation, the appropriate jumper(s) will be installed at the factory, prior to shipment of a completed system.

In general, no field modifications to these jumper settings are required, except when it is required to re-configure a modem to operate in a different mode of operation ( i.e. converting a spares kit below decks modem to operate as an above decks modem or re-configuring an ADE Modem for M&C integration with a newly installed RF package change that requires RS485 communications instead of RS422). Refer to the table below for the proper jumper settings.

Assembly

Dash

Number

Modem

Mounting

Location

Serial

Communication

Protocol

Jumper

Settings

Visual Jumper

Reference

Jumper Block Location

-1

Above

Decks

RS232 1-2

-2

Below

Decks

RS232 None

-3

Above

Decks

RS422

1-2

3-4

-4

Below

Decks

RS422 3-4

-5

Above

Decks

2 Wire RS485

(Half Duplex)

1-2

5-6

7-8

9-10

7-3


-6

Below

Decks

2 Wire RS485

(Half Duplex)

5-6

7-8

9-10

7.4.

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. You can also verify the communications link between above decks and below decks modems themselves. Refer to the below list for an explanation of the different LED states.

• Upon power up, the modems’ LED will flash amber. The number of flashes indicates the dash number configuration of the modem. Refer to the configuration chart above for the appropriate dash configuration for your modem assembly.

• A flashing Red LED indicates no communication between modems (2 failed channels).

• An LED alternating Red and Green indicates a single channel failure.

• Solid green indicate dual channel communications lock between modems (i.e. there is enough signal being received to establish communications).

Below Decks Modem Assembly Above Decks Modem (Located in PCU Assembly)

Figure 8 LED Illuminated Green

Figure 9 LED Illuminated Red

7.5.

400 MHz Modem Signals

7.5.1.

Pedestal M&C

RS-422 Antenna Monitor and Control signals pass from the ACU’s J4 Antenna Port, through the PED M&C port of the 400MHz base modem and are modulated and demodulated. The modulated signal(s) are then diplexed with the RxIF signal. This modulated signal travels on the Rx IF cable, between the MUX Rack Panel and then into 400 MHz pedestal modem. The Pedestal modem then converts the RF Signal back to RS-422, before routing to the M&C port of the Pedestal Control Unit via an interface cable.

7-4


7.5.2.

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. The Pedestal modem then converts the RF Signal back to RS-232/422/485, before routing to the M&C port of the above decks radio equipment via an interface cable.

7.5.3.

Channel Identification

There are four base frequencies used in the 400MHz FSK modem assemblies:

• The BDE Modem Transmits Pedestal M&C at 452.5 MHz

• The BDE Modem Transmits Radio M&C at 447.5 MHz

• The ADE Modem Transmits Pedestal M&C at 465.0 MHz

• The ADE Modem Transmits Radio M&C at 460.0 MHz

Figure 10 ADE Modem Transmit Frequency Markers

Figure 11 BDE Modem Transmit Frequency Markers

7-5


7.6.

Troubleshooting 400MHz Modem Communication Faults

7.6.1.

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. Listed below are the available commands:


<0000 <cr>

BDE Modem RSSI (Receive Signal Strength

Indicator)

<1234 <cr> BDE Modem Serial Number Query

<0273 <cr> BDE Modem Temperature Query

<0411 <cr> BDE Modem Software Version and

Configuration Query

Typical Response

RSSI P-43 R-44

P = Pedestal Control Channel

R = Radio Control Channel

Sn 000001D2F1F1

Temp = 34.9c

Temperature expressed in Celsius

Modem Ver 1.00B-1

Software version – configuration Dash #

>0000 <cr> ADE Modem RSSI (Receive Signal Strength

Indicator)

>1234 <cr> ADE Modem Serial Number Query

>0273 <cr> ADE Modem Temperature Query

>0411 <cr> ADE Modem Software Version and

Configuration Query

RSSI P-43 R-50

P = Pedestal Control Channel

R = Radio Control Channel

Sn. 00000102FC18

Temp = 27.5c

Temperature expressed in Celsius

Modem Ver 1.00B-2

Software version – configuration Dash #

7.6.2.

Modem Query Methods

The following text provides instruction on how to submit modem queries using any one of four different methods listed below. These instructions assume that the operator have a clear understanding of Menu navigation and entry via the Antenna Control Unit front panel, or connection requirements for using remote diagnostic software, and/or the internal HTML page of the ACU. Refer to the appropriate manual text if further instruction on wiring connections or button pushing is required.

7-6


7.6.2.1.

Using the ACU Front Panel

1.

Using the ACU’s Front Panel, navigate through the Setup menu to access the Remote

Command Sub-Menu.

2.

Enter in the desired Modem

Query then press the ENTER key.


3.

Observe and/or Record the displayed response.

7.6.2.2.

Using the Internal HTML Page

1.

Logon to the ACU’s Internal

HTML page.

2.

Browse to the “Communication

Port Settings” page.

3.

In the Command Window,

Type in the desired Modem

Query and hit Send

4.


5.

Repeat as required until all desired modem queries are noted.

.

7.6.2.3.

Using DacRemP

1.

Open up DacRemP and select the Comm Diagnostics Tool

(cntrl + c).

2.

In the Remote Command Entry

Window, type in the desired

Modem Query and hit Enter. i.e

“<1234 <CR>”

7-7


3.


4.

Repeat as required until all desired modem queries are noted.

7.6.2.4.

Using ProgTerm

1.

Open up ProgTerm and select the Tools Menu.


2.

Select “Modem Tools”.

3.

Select the desired modem location.

BDE is the Below Decks

Modem.

ADE is the Above Decks

Modem.

4.

Select the desired modem query.

5.


6.

Repeat as desired until all desired modem queries are noted.

7.6.3.

Isolating a 400 MHz Modem Fault Procedure:

1.

Issue “<0000” and “>0000” queries to the ADE and BDE modems and record the responses.

ADE (>0000)______________ BDE (<0000)______________

2.

Compare your recorded responses to the list below to determine what modem fault(s) (if any) is present.

3.

Use the appropriate text following the failure table for a list of possible failures attributed to the failure type established.

Tools suggested:

Laptop or PC w/ an available comport and diagnostic software installed

9 pin Serial cable

CAT5 Cross-over cable

ProgTerm Ver. 1.35 or Later

DacRemP Ver. 0.20 or Later

Straight thru (1-1 Pin out) For Serial Based

Connections

Required for IP based connections (HTML, DacRemP IP)

7-8


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

SMA “T” splitter or N type “T” splitter

400MHz FSK Modem Fault Reference Table

Capable of handling 100kHz up to 3Ghz & up to 48VDC

Or equivalent cabling

ADE Modem RSSI

P= <65, R= <65

P= >65, R= >65

No Response

BDE Modem RSSI

P= <65, R= <65

P= >65, R= >65

No Response

Failure

None

Receive IF Path

BDE/ADE No Response

No Response

No Response

P= <65, R= <65

P= <65, R= >65

P= <65, R= <65

P= <65, R= >65

P= <65, R= <65

P= >65, R= >65

P= >65, R= <65

P= <65, R= <65

P= <65, R= >65

P= <65, R= <65

ADE No Response 1

ADE No Response 2

BDE Receive Or ADE Transmit (PED M&C)

BDE Transmit Or ADE Receive (PED M&C)

BDE Receive Or ADE Transmit (RF M&C)

BDE Transmit Or ADE Receive (RF M&C)

7.6.3.1.1.

NONE:

No failure communication failures between ADE and BDE modems.

7.6.3.1.2.

Receive IF Path:

The Following possibly points of failures assumes LED illumination on both modems.

1.

Modem Configuration

Verify BDE modem and ADE modem are properly configured (jumper block settings).

2.

Coax Cable failure

Verify continuity on the below coaxes, repair or replace as required. a.

BDE Modem to connector bracket (Base Rack Panel Assembly) b.

(CFE) BDE to ADE Rx IF (Base Rack Panel to radome Connector bracket) c.

Rx N to SMA Adapter (Located on connector bracket at radome base) d.

SMA to SMA (From connector bracket to bottom the bottom side of the rotary joint) e.

SMA to SMA (From top side rotary joint to PCU/ADE Modem

3.

Rotary Joint (Receive channel)

Verify continuity on the receive channel for its entire 360 degree range of motion.

Replace rotary joint if any sector of it has failed.

7.6.3.1.3.

BDE/ADE No Response:

The Following possibly points of failures assumes LED illumination on both modems.

1.

Modem Configuration

7-9


Verify BDE modem and ADE modem are properly configured (jumper block settings).

2.

ACU to BDE modem interface cable failure

Verify harness continuity. Repair or replace as required

3.

ACU Antenna Port Failure o Install an RS232 Loopback connector** on Antenna Port of the ACU. Enter an “n0999” Remote Command and verify that it echoes back on the bottom line of the display.

1.

If loop back works, BDE Modem failure or ACU to BDE Interface cable failure.

2.

If loop back does not work, ACU failure.

7.6.3.1.4.

ADE No Response 1: (assumes LED illumination on both modems)

1.

Modem Configuration

Verify BDE modem and ADE modem are properly configured (jumper block settings). o Install Spectrum Analyzer in line with the Rx IF coax path.

1.

If 465.0MHz Transmit Beacon is present, the fault is the BDE modem.

2.

If 465.0MHz Transmit Beacon is NOT present fault is with the

ADE modem.

7.6.3.1.5.

ADE No Response 2:

1.

ADE Modem Configuration

Verify the ADE modem is properly configured (jumper block settings).

2.

Coax Cable failure

Verify continuity on the items listed below, repair or replace as required. a.

Base Modem to connector bracket (Base Rack Panel Assembly) b.

(CFE) BDE to ADE Rx (LMR-400) c.

Rx N to SMA Adapter (Connector bracket at Radome base) d.

SMA to SMA connector bracket to bottom side rotary joint e.

SMA to SMA top side rotary joint to PCU/ADE Modem

3.

Rotary Joint (Receive channel)

Verify continuity on the receive channel for its entire 360 degree range of motion.

Replace rotary joint if any sector of it has failed.

7.6.3.1.6.

BDE Receive Or ADE Transmit (PED M&C):

1.

BDE Modem Rx Port Failure (Not receiving at 465.0MHz) or

2.

ADE Modem Tx Port Failure (Not transmitting at 465.0MHz) o Install Spectrum Analyzer in line with the Rx IF coax path.

1.


2.

If 465.0MHz Transmit Beacon is NOT present fault is with the

ADE modem.

7.6.3.1.7.

BDE Transmit or ADE Receive (PED M&C):

1.

BDE Modem Tx Port Failure (Not transmitting at 452.5MHz) or

2.

ADE Modem Rx Port Failure (Not receiving at 452.50MHz) o Install Spectrum Analyzer in line with the Rx IF coax path.

1.


2.

If 452.5MHz Transmit Beacon is NOT present, the fault is with the ADE modem.

7-10


7.6.3.1.8.

BDE Receive or ADE Transmit (RF M&C):

1.

BDE Modem Rx Port Failure (Not receiving at 460.0MHz) or

2.

ADE Modem Tx Port Failure (Not transmitting at 460.0MHz) o Install Spectrum Analyzer in line with the Rx IF coax path.

1.

If 465.0MHz Transmit Beacon in present, the fault is the BDE modem.

2.


7.6.3.1.9.

BDE Transmit Or ADE Receive (Radio M&C):

1.

BDE Modem Tx Port Failure (Not transmitting at 447.5MHz) or

2.

ADE Modem Rx Port Failure (Not receiving at 447.5MHz) o Install Spectrum Analyzer in line with the Rx IF coax path.

1.

If 465.0MHz Transmit Beacon in present, the fault is the BDE modem.

2.


7.7.

Troubleshooting

7.7.1.

Theory Of Stabilization Operation

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

The Pedestal Control Unit (PCU) uses inputs from the level cage sensors to calculate the amount of torque required in each axis to keep the antenna pointed within +/-0.2 degrees. The primary sensor input for each loop is the rate sensor mounted in the Level Cage Assembly. This sensor reports all motion of the antenna to the PCU. The PCU immediately responds by applying a torque in the opposite direction to the disturbance to bring the antenna back to its desired position. Both the instantaneous output of the rate sensor (Velocity

Error) and the integrated output of the rate sensor (Position Error) are used to achieve the high pointing accuracy specification.

The calculated torque commands are converted to a 5 volt differential analog signal by a Digital to Analog converter (D/A) and sent to each of three Brush-Less Servo Amplifiers. These amplifiers provide the proper drive polarities and commutation required to operate the Brush-Less DC Servo Motors in torque mode. The

Torque acting on the mass of the antenna cause it to move, restoring the rate sensors to their original position, and closing the control loop.

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

7.7.2.

Antenna Initialization (Series 97B & Series 00 )

Turn the pedestal power supply ON. The brakes on the Elevation and Cross-Level motors will release.. Brake release power supply control circuit supplies 24 VDC to the brakes initially (5-10 seconds) and then reduces the voltage to 12VDC. The PCU will initialize the stabilized portion of the mass to be level with the horizon and at a prescribed Azimuth and Elevation angles. The antenna will go through the specific sequence of steps

(listed below) to initialize the level cage, elevation, cross-level and azimuth to predetermined starting positions.

Initialization is completed in the following phases, each phase must complete properly for the antenna to operate properly (post-initialization). Observe the Initialization of the antenna pedestal.

Step 1. The level platform motor drives the Level Cage CW, issuing extra steps to assure that the cage is all the way to the mechanical stop. Then the Level Cage will be driven exactly 45.0 degrees

CCW.

7-11


Step 2. Elevation axis then activates - Input from the LV axis of the tilt sensor is used to drive the

Elevation of the equipment frame to bring the tilt sensor LV axis to level. This step takes approximately 10 seconds and will result in the dish being at 45.0 degrees in elevation. The level cage may still be tilted left or right at this time.

Step 3. Cross-Level axis activates - Input from the CL axis of the tilt sensor is used to drive Cross-

Level of the equipment frame to bring the cross-level axis of the tilt sensor to level (this results in the tilt of the Cross-Level Beam being level). This step takes approximately 10 seconds.

Step 4. Azimuth axis activates - Antenna drives CW in azimuth until the “Home Flag” signal is produced. This signal is produced by a Home Switch hitting a cam (or by a Hall Effect sensor in close proximity to a Magnet). After another 10 second wait, the antenna will report its version number at the Antenna Control Unit (ACU).

This completes the phases of initialization. At this time the antenna elevation should 45.0 degrees and

Relative azimuth should be at home flag (home switch engaged on the home flag cam).

If any of these steps fail, or the ACU reports model "xx97", re-configure the PCU as described in the this chapter. If initialization still fails, this indicates a drive or sensor problem, refer to the Troubleshooting section.

7.7.3.

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. The matrix below lists some test(s) and which of the

DacRemP graph selection would be best to use to identify a fault. The end of this chapter contains examples on how to use DacRemP to diagnose a fault.

Targeting: is the ability to accurately point the antenna to an angular position in free space and is controlled by the ACU. (Does the system drive to the Azimuth, Elevation, and Polarity positions within 1 degree of the desired satellite?)

Stabilization: is the process of de-coupling the ships motion from the antenna and is controlled by the

PCU. (Does the system maintain the satellite link after turning off TRACKING?)

Tracking: is the process of issuing fine adjustments to the pointing angle of the antenna to optimize the received signal level and is controlled by the ACU. (Does the system pass a four quadrant-tracking test?)

Functional Test(s) DacRemP Graph

Selection to use

System Function(s)

Four Quadrant Tracking. ADMC (Position) Tracking

Azimuth Encoder Verification.

Sea Trial

Side Lobe Plots

Targeting Alignment (AZ & EL Trims)

ADMC (Position)

ADMC (Position)

ADMC (Position)

ADMC (Position)

Targeting

Targeting

Tracking

Stabilization

Tracking

Targeting

Determine Blockage Mapping

Unwrap recovery (Limited Az systems only)

ADMC (Position)

ADMC (Position)

Tracking

Stabilization

Pedestal Gain Verification

Home switch (flag) verification (Unlimited Az systems only)

Remote Tilt Verification

DISPIVC (Loop Error)

DISPV (Ref)

DISPV (Ref)

Stabilization

Stabilization

Targeting

Stabilization

7-12


Level cage alignment Verification (sensor alignment)

Rate Sensor Output Verification

Level and CL fine balance Verification


DISPV (Ref)

DISPW (Rate)

DISPTC (Drive)

Targeting

Stabilization

Stabilization

Stabilization

AZ Friction Torque Test

DishScan Drive/Phase

DISPTC (Drive)

DishScan XY

Stabilization

Tracking

Stabilization

7.7.4.

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. These forces may be the result of but not restricted to static imbalance, excessive bearing friction, cable binding, or wind loading. If these forces cause the antenna to mis-point by more than 0.5° from the desired position the PCU will flag a “Stab Limit” error.

• To view the position error, select the

graph chart.

• This chart displays sensed axis errors via three traces, CL (Cross Level), LV (Elevation), and AZ

(Azimuth), at a fixed 0.05

º/ vertical division.

• The normal trace average will plots it’s display ± 3 divisions from the red reference line. Any trace line average plotted above this is of concern and troubleshooting required. The example below shows the forces exerted onto the antenna as a resultant of DishScan Drive. The example below shows the results of various forces put upon antenna.

7-13


• Cross-Level Axis physically moved CCW (down to the left.) and then CW (up to the right.)

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.

7.7.5.

Reference Sensor Monitoring

The DacRemP DISPV graph chart provides a means for monitoring the output of the 2 Axis Tilt Sensor and the Home Switch sensor for diagnostic purposes. The Tilt sensor (located inside the Level Cage Assembly) is the primary input for the antenna’s reference to the horizon (0° Elevation and 90° Cross-Level). While the

Home Switch Sensor (located at the antenna base) is used to calibrate the antenna’s position relative to the vessels BOW.

• To view the reference sensors, select the

graph chart.

• This chart displays the output of the Tilt Sensor via two traces, CL (Cross Level), LV (Elevation) at a fixed 1

º/ vertical division, and the home flag logic level via a single trace, AZ (Azimuth).

7-14


• The normal trace display for the Tilt Sensor, after performing remote tilt calibration, will be ± 4 divisions from the red reference line. Any trace line average plotted above this is of concern and troubleshooting required. See below for a screen capture of an antenna that is Level in both the

Cross-Level and Elevation Axis.

• The Cross 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 to the left and increase (plots above red line) when tilted to the right. See below for a screen capture of an abnormal CL trace Plot, it is an indication that the antenna that is either listed to the right approx. 4 degrees or the PCU requires to much CL tilt bias.

• 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).

• The Azimuth display for the Home Switch will normally display a logic level high (plots directly on

Red reference line after clicking on the button) when the home flag is NOT engaged and changing to a logic level low when engaged. See below for a screen capture of an antenna that was driven so that the Home Flag switch is engaged.

7-15


7.7.6.

Open Loop Rate Sensor Monitoring

The DacRemP DISPW graph chart provides a means for monitoring the output of the 3 solid state rate sensors (located inside the Level Cage Assembly) for diagnostic purposes. The rate sensors are the primary inputs to the PCU for stabilization.

• To monitor the rate sensors, select the

graph chart

• This chart displays sensed output from the 3 rate sensors via three traces, CL (Cross Level), LV

(Elevation), and AZ (Azimuth), at a fixed 1

º/Second/vertical division.

• A normal trace display will be ± 1 divisions from the red reference line. The example shown below shows an antenna that is NOT currently sensing motion in any axis.

• 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.

• The Azimuth display should decrease (plots below red line) as the antenna is rotated CCW and increase (plots above red line) as the antenna is rotated CW. In the example below, the output of the Azimuth rate sensor is plotted above the reference line, indicating that the antenna was driven

CW in Azimuth. Due to the in-practicality of driving an axis at a consistent rate, verification of rate sensor output is, for the most part restricted to a positive or negative response of the Level Cage movement (plotting above or below the red reference line of each axis).

7-16


7.7.7.

Fine Balance and Monitoring Motor Drive Torque

The DacRemP DISPTC graph chart provides a means for monitoring torque commands required for each motor for diagnostic purposes and verifying antenna balance. By observing each trace, the required drive of the antenna via the motor driver PCB may be established.

• To view the Torque Commands, select the

graph chart.

• This chart displays the Torque Command errors for each axis via three traces, CL (Cross Level), LV

(Elevation), and AZ (Azimuth), at a fixed 0.195amps/vertical division.

• A normal trace display will be ± 1 divisions from the red reference line while under calm sea conditions and with DishScan Drive turned off. See example below

• The Cross Level display will decrease (plots below red line) as the antenna requires drive to the left and increase (plots above red line) as the antenna requires to the right.

Example: The antenna pictured in the screen capture below is imbalanced so that it is “Right Heavy”.

The CL trace is plotting above the red reference line (indicating that drive CCW is required to maintain a 90°Cross-Level position).

7-17


• The Level display should decrease (plots below red line) as the antenna requires drive forward (Up in elevation) and increase (plots above red line) as the antenna requires drive back (Down in elevation).

• Example: The antenna pictured in the screen capture below is imbalanced so that it is “Front Heavy”.

The LV trace is plotting above the red line (indicating that drive CW is required to maintain the current elevation position).

• The Azimuth display should decrease (plots below red line) as the antenna is driven CCW and increase (plots above red line) as the antenna is rotated CW.

7.7.8.

Open Loop Motor Test

The DacRemP Comm Diagnostics Window provides a means 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.

• To manually drive the motors, select the “Comm

Diagnostics” window under to the Tools submenu or

Press “CTRL + C”

• Using the small field in the upper left hand corner of the window, type in the remote command and verify the motor appropriately drives in the direction commanded.

• To drive the Cross Level motor, key in ^1064, ^1128 or

^1192 and press ENTER to drive the Cross Level axis

LEFT, OFF or RIGHT respectively.

7-18 to


• To drive the Level motor, key in ^2064, ^2128 or ^2192 and press ENTER to drive the level axis

FORWARD, OFF or BACKWARD respectively.

• To drive the Azimuth motor, key in ^3064, ^3128 or ^3192 and press ENTER to drive the azimuth axis CW, OFF or CCW.

7.7.9.

To Disable/Enable DishScan

To be able to use Step Track, or to revert to Conscan, as your active tracking mode you will have to disable

DishScan.

Select the DISHSCAN parameter window on the ACU:

1.

Press the RIGHT arrow, then press the UP arrow and last press the ENTER key to turn DishScan mode

ON.

2.

Press the RIGHT arrow, then press the DOWN arrow and last press the ENTER key to turn DishScan

Mode OFF.

If you change this remote parameter, you must save the change using REMOTE PARAMETERS.

If DishScan is OFF and the Step Integral parameter is set to 0000, you will get a constant ERROR 0016

(DishScan error) and you will see zeros flashing in the lower left of the Azimuth and Elevation ENTRY menu displays. This is a visual indication that DishScan is turned OFF.

7.7.10.

Satellite Reference Mode

The ships gyro compass input to the ACU may be accurate and stable in static conditions and yet may NOT be accurate or stable enough in some underway dynamic conditions. If there is no gyro compass or if the input is corrupt, not stable or not consistently accurate the tracking errors will become large enough to cause the antenna to be mis-pointed off satellite.

Satellite Reference Mode will uncouple the gyro reference from the azimuth rate sensor control loop. This decoupling of the Gyro source only happens 5 minutes after an azimuth command has been sent to the antenna by means of an AZ target command, a search pattern initiated, or the a Satellites longitudinal position is targeted. When operating in Satellite Reference Mode changes in ships gyro reading will reflect its changes to the ACU’s display but will not directly affect the azimuth control loop. The Pedestal Control Unit will stabilize the antenna based entirely on the azimuth rate sensor loop and the tracking information from

DishScan. This will keep the azimuth rate sensor position from eventually drifting away at a rate faster than the tracking loop can correct by using the tracking errors to regulate the rate sensor bias.

Satellite Reference Mode can be used as a diagnostic mode to determine if tracking errors are caused by faulty gyro inputs.

Satellite Reference Mode MUST be used when:

• No Gyro Compass is available

• Frequent or constant ACU Error Code 0001 (Gyro Compass has failed)

• Gyro Compass output is NMEA heading

• Flux Gate Compass is being used

• GPS Satellite Compass is being used

To view, or change, the Satellite Reference Mode status, select the SAT REF remote parameter:

1.

Press the RIGHT arrow, then press the UP arrow and last press the ENTER key to turn Satellite

Reference Mode ON.

2.

Press the RIGHT arrow, then press the DOWN arrow and last press the ENTER key to turn Satellite

Reference Mode OFF.

If you change this remote parameter, you must save the change using REMOTE PARAMETERS.

7.7.11.

To Read/Decode an ACU Error Code 0008 (Pedestal Function Error):

An Error Code 8 as reported by the ACU is an indication that the above decks equipment has experienced an error. One of the functions available within the “Comm Diagnostics” tool window provides the means to read and decode the actual discreet Pedestal Function Error.

7-19


1.

Select the “Comm

Diagnostics” window under to the Tools submenu or Press “CTRL +

C”

2.

Left mouse click on the

icon.


3.

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.

7-20


State

Slow Scan

Sat Reference

DishScan

Unwrap

Data 3

Data 2


Description

PCU Status (Word 1)

Indicates antenna is in a specialized mode, Slow Scan, which is required when ever a test requires driving the antenna >5°/sec

Indicates that satellite reference mode is enabled.

Indicates that DishScan Drive is enabled.

Indicates that the antenna is currently in an “Unwrap” state.

This is not a valid error for unlimited azimuth antenna systems

Indicates active communication between above decks and below decks equipment at the time of query

Indicates active communication between above decks and below decks equipment at the time of query

Az Target

PCU Status (Word 2)

Indicates the antenna is currently targeting a pre-determined azimuth position

Az Velocity

Valid Heading (PCU)

PCU Error

PCU Init

Hi Elevation

Sensor Limit

Stability Limit

AZ Reference Error

AZ Servo Limit

LV Servo Limit

CL Servo Limit

**Not a valid state**

Indicates that the PCU has received and integrated the heading value from the

ACU into the Azimuth Stabilization Loop. This is NOT an indication of a proper

Heading integration into ACU.

Indicates that one or more errors have been reported by the above decks equipment.

Indicates that the above decks equipment is currently performing an

Initialization sequence

Indicates that the above decks equipment is operating an Elevation Position higher than 83°

PCU Error Status (Word 3)

**Not a valid state**

Indicates that the above decks equipment is mis-pointed from its intended target by more than 0.5°. (FCC Tx Mute Compliance)

Indicates a failure to integrate one the reference inputs within the Azimuth

Stabilization Loop.

Indicates the current draw through the Azimuth Servo Amplifier (motor driver

PCB) has exceeded what is required during normal operation

Indicates the current draw through the Elevation Servo Amplifier (motor driver


Indicates the current draw through the Cross-Level Servo Amplifier (motor driver


7-21


7.7.12.

Remote GPS LAT/LON Position:

The above decks equipment has an integrated on board Furuno GPS antenna system. The Latitude and

Longitude position information provided are utilized to calculate the Azimuth, Elevation, Cross-level and

Polarity pointing angles of the desired satellite. The DacRemP “Comm Diagnostics” Window provides a means to query the GPS antenna to verify proper operation. The procedure below describes this process.

1.

Select the “Comm

Diagnostics” window under to the Tools submenu or Press “CTRL +

C”

2.

Left mouse click on the

icon.

3.

Left Mouse click on the

“?@ PCU GPS position, 1 min (1 Nm)”

7-22


4.

In the “Response” window verify proper GPS position to within 1 nautical mile of your current position.

The Latitude & Longitude position of the GPS will be displayed in the following format:

“@ LAT,N,LON,E,A”

Where LAT and LON are in degrees and minutes, LAT will be followed by N or S (North or South), LON will be followed by E or W (East or

West), then a status character and finally a checksum character.


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.

“,” (Comma) = GPS has NOT acquired a proper fix,

“N” = GPS fix is NOT valid

“A” = GPS has acquired a valid fix.

7.8.

Maintenance

7.8.1.

Balancing the Antenna

The antenna and equipment frame are balanced at the factory however, after disassembly for shipping or maintenance, balance adjustment may be necessary. The elevation and cross-level motors have a brake mechanism built into them, therefore, power must be ON to release the brakes and DishScan and antenna

drive must be OFF to balance the antenna. . Do NOT remove any of the drive belts. Balancing is accomplished by adding or removing balance trim weights at strategic locations to keep the antenna from falling forward/backward or side to side. The antenna system is not pendulous so 'balanced' is defined as the antenna remaining at rest when left in any position.

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.

Assure that Antenna power is ON and that the antenna has completed initialization.

At the ACU:

1.

From the ACU - REMOTE BALANCE parameter: Enable balance mode (refer to your ACU manual).

The screen should now display “REMOTE BALANCE ON”.

At the Antenna:

2.

At the Antenna: Balance the antenna with the elevation near horizon (referred to as front to back balance) by adding, or subtracting, small counter-weights.

3.

Then balance Cross Level axis (referred to as left-right balance) by moving existing counter-

weights from the left to the right or from the right to the left. Always move weight from

7-23


one location on the equipment frame to the same location on the opposite side of the equipment frame (ie from the top left of the reflector mounting frame to the top right of the reflector mounting frame). Do NOT add counter-weight during this step.

4.

Last, balance the antenna with the elevation pointed at, or near, zenith (referred to as top to bottom balance) by moving existing counter-weights from the top to the bottom or from the

bottom to the top. Always move weight from one location on the equipment frame to the same location on the opposite side of the equipment frame (ie from the top left of the reflector mounting frame to the bottom left of the reflector mounting frame). Do NOT add counter-weight during this step.

5.

When completed, the antenna will stay at any position it is pointed in for at least 5 minutes (with no ship motion).

6.

Do NOT cycle antenna power to re-Initialize the antenna. Return to the ACU, which is still in

REMOTE BALANCE mode, and press ENTER to exit Remote Balance Mode. When you exit Balance

Mode the antenna will be re-initialized, which turns DishScan, Azimuth, Elevation and Cross-Level drive ON.

7.8.2.

To Adjust Tilt:

Select the REMOTE TILT window on the ACU and;

1.

While at the Remote Tilt window, press the UP arrow.

2.

Set a bubble (or bulls-eye) level on top of the Level Cage assembly.

3.

Press the number 5 to zero the tilt sensor bias. NOTE: If the level cage is not within 4 degrees of level fore/aft or left/right, replace the Level Cage assembly.

4.

If the level cage is within 4 degrees, use the 2 and 8 key to adjust LV (fore/aft) until the level cage is level in this axis.

5.

If the level cage is within 4 degrees, use the 4 and 6 key to adjust CL (left/right) until the level cage is level in this axis.

6.

Once the level cage is level in both axes, wait for 30 seconds then press the DOWN arrow key and then press the ENTER key.

7.

Press MODE (or ENTER) to step the menu to REMOTE PARAMETERS.

8.

Press the UP arrow key and then press the ENTER key to save the settings in the PCU.

This save the new tilt bias settings in the PCU. Reset or re-initialize the antenna to verify that the Level cage is properly level with the new settings.

7.8.3.

To Reset/Reinitialize the Antenna:

Select the REMOTE COMMAND window on the ACU and;

1.

Key in .94 and then hit the ENTER key (note the decimal point) to access the utility commands.

"^0000" should appear in the command window.

2.

Key in 90 and then hit the ENTER key.

This resets the PCU on the antenna. The antenna will reinitialize with this command (Performs a similar function as a power reset of the antenna).

7-24


7.9.

Pedestal Control Unit Configuration (xx97B & xx00)

The PCU is designed to be used with a variety of antenna pedestal configurations. The configuration information that is unique to each pedestal type is stored in a Non Volatile Random Access Memory (NVRAM) in the PCU enclosure. If the PCU is replaced or the NVRAM in the PCU should become corrupt, the PCU must be re-configured to operate with the pedestal it is installed on. The default configuration for the PCU is model xx97B. In this configuration the PCU will not drive any of the three torque motors to prevent damage to the unknown pedestal.

To configure the PCU, select the REMOTE COMMAND window on the DAC-2302 by pressing the MODE key until this window appears (if the DAC-2302 will not advance beyond the REMOTE AUX window, enter 7979 and press ENTER).

In the REMOTE COMMAND window, key in ". 7 8 ENTER". An "N" should now appear in the command window. Refer to the table below to key in the appropriate value for you model antenna.

EXAMPLE: For an 9797B Model Antenna:

1.

Key in "0211" to select system type 211. The display should now show "N0211".

2.

Press ENTER to send this system type command to the PCU.

3.

Press ENTER several times to select REMOTE PARAMETERS. Press UP arrow and then ENTER to save the system type in the PCU.

4.

Press ANTENNA, MODE, N/S to display the Remote Version Number. It should now display "9797B VER 2.xx".

7.9.1.

MODEL CONFIGURATION NUMBERS

The following table shows the current mode configuration values for Series 97B pedestals with 97/07 VER

2.10 or greater PCU software.

MODEL xx97B

8897B

9497B

12097B

14400B

8797B

9697B

9797B

14600B

9597B

Configuration Number

N 0000 Turns off all drive motors

N 0205

N 0206

N 0207

N 0208

N 0209

N 0210

N 0211

N 0212

N 0213

7-25


7.10.

Antenna Stowing Procedure


WARNING: Antenna Pedestal must be properly restrained (stowed) to prevent damage to wire rope isolators, isolator springs and/or antenna pedestal mechanism during underway conditions when power is removed from the

antenna assembly.

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. If, for some reason, the antenna must be powered down during underway transits, it should be secured with nylon straps regardless of sea conditions to prevent damage to the antenna system. Refer to the procedure below to secure the antenna pedestal.

Equipment & Hardware needed:

• Two (2) ½-13 x 2-inch Stainless Steel bolts.

• Two (2) Nylon straps with ratchet mechanism. Nylon straps must be rated to 300 lbs. Working load

capacity and 900 lbs. Max rated capacity.

Stowing procedure:

1.

Point the antenna to Zenith, (90 degree elevation angle), straight up.

2.

Install one (1) ½-13 x 2-inch bolt into the inside of each elevation beam as shown in Figure 1.

3.

Hook one end hook of the nylon strap to bolt in elevation beam as shown in Figure 2.

7-26


4.

Hook the other end hook of the nylon strap to the pedestalmounting frame as shown in Figure 3.

5.

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.

6.

Tighten straps until the canister has been pulled down approx. ¼ to ½ inch. Do not over-tighten. You must leave approximately 1/8 inch clearance between the rubber stops and the azimuth driven sprocket to allow the vertical vibration isolation to function properly.

NOTE: Remove both the straps and the bolts before applying power and returning the antenna to normal operating condition.

7-27



7-28

9797B-39 Ku-Band TX/RX Antenna 9797B-39 Technical Specifications

8.

9797B-39 Technical Specifications

The technical specifications for your Series 97B Above Decks Equipment subsystems are listed below: Refer to your ACU manual for its’ Specifications.

8.1.

Antenna Reflector

Type

Diameter (D)

Sidelobe:

Voltage Axial Ratio:

Focal Length f/D

RX Gain

TX Gain

8.3.

9797-39 RF Equipment

Power Supply Unit(s)

Ku-Band Radio

Ku-Band HPA

Honeycomb Fiberglass Parabola

2.4 Meter Modified Offset

Compliant with Intelsat Standard G

1.3:1, maximum, Receive Band

1.09:1, maximum, Transmit Band

38 in

0.245

38.5 dBi at 3.95 GHz

47.75 dBi at 11.85 GHz

41.7 dBi at 6.18 GHz

48.45 dBi at 14.25 GHz

8.2.

Feed Assemblies

8.2.1.

Ku- Band TXRX Feed Assembly

Type Prime focus

Transmit frequency

Receive frequency

Polarization

VSWR:

Polang control

LNB/LNC Gain & Noise Figure

14.0-14.5 GHz Ku Band

10.95-12.75 GHz Ku Band

Linear

1.3:1

24 volt DC motor with position feedback for Linear Feed.

Refer to RF Equipment vendor manual(s)

Codan 5700 Power Supply

Codan 5900 Ku-Band Converter Module

Xicom 400 watt TWTA

8-1

9797B-39 Technical Specifications 9797B-39 Ku-Band TX/RX Antenna

8.4.

SMW Quad Band LNB

Band 1

Voltage Required

Input RF Frequency

Local Oscillator Frequency

Output IF Frequency

Band 2

Voltage & Tone Required

Input RF Frequency


Output IF Frequency

Band 3

Voltage Required

Input RF Frequency


Output IF Frequency

Band 4

Voltage & Tone Required

Input RF Frequency


Output IF Frequency

Gain (typ)

Noise Figure

Current (typ)

13 VDC

10.95-11.70 GHz

10.00 GHz

950 to 1700 MHz

13 VDC + 22 KHz Tone

11.70-12.25 GHz

10.75 GHz

950 to 1500 MHz

18 VDC

12.25-12.75 GHz

11.30 GHz

950 to 1450 MHz

18 VDC + 22 KHz Tone

10.70-11.70 GHz

9.75 GHz

950 to 1950 MHz

54 dB

0.8 dB

270 mA

8.5.

Pedestal Control Unit (PCU)

The PCU Assembly contains 1 Printed Circuit Board (PCB). It is the main control board.

Connectors

Antenna Pedestal

M&C Interface

GPS Input

Controls

M&C Interface

44 Pin D-Sub connector

15 Pin D-Sub connector

BNC connector

None

9600 Baud RS-422

8-2


8.6.

400 MHz Base & Pedestal Unlimited Azimuth Modems (3 Channel)

Combined Signals (-1,-2)

Pass-Thru 950-3650 MHz RX IF,

Injected

Connectors:

RX IF L-Band

Rotary Joint

Radio / Ped M&C

RF Pedestal M&C

Modulation

Mode

Frequencies

BDE RF M&C

BDE Ped M&C

ADE RF M&C

ADE Ped M&C

Radio/Pedestal M&C

Modulation

Mode

Diagnostics

Pedestal Interface

RF Interface (Jumper Selectable)

ADE/BDE Mode

22Khz Tone

DC LNB Voltage Select

400 MHz Pedestal M&C

SMA female

SMA female

9 pin D-Sub Connectors

Pedestal Control

FSK

Full Duplex

TX = 447.5 Mhz +/-100 KHz

TX = 452.5 Mhz +/-100 KHz

TX = 460.0 Mhz +/-100 KHz

TX = 465.0 Mhz +/-100 KHz

Radio & Pedestal Control

FSK

Full Duplex

LED Status Indicator for Power, Link communications and Self Test

RS-232/422

RS-232, RS-422 (4 wire) or RS-485 (2 wire)

Jumper Selectable

8-3


8.7.

Stabilized Antenna Pedestal Assembly

Type: Three-axis (Level, Cross Level and Azimuth)

Stabilization: Torque Mode Servo

Stab Accuracy:

LV, CL, AZ motors:

Inertial Reference:

Gravity Reference:

AZ transducer:

Range of Motion:

Elevation

Cross Level

Azimuth

Elevation Pointing:

0.2 degrees MAX, 0.1 degrees RMS in presence of specified ship motions (see below).

Size 34 Brushless DC Servo.

Solid State Rate Sensors

Two Axis Fluid Tilt Sensor

256 line optical encoder / home switch

-15 to +100 degrees

+/- 25 degrees

Unlimited

+0 to +85 degrees (with 15 degree Roll)



Relative Azimuth Pointing Unlimited

Specified Ship Motions (for stabilization accuracy tests):

Roll:

Pitch:

Yaw:

Turning rate:

+/-15 degrees at 8-12 sec periods

+/-10 degrees at 6-12 sec periods

+/-8 degrees at 15 to 20 sec periods

Up to 12 deg/sec and 15 deg/sec/sec

Headway:

Mounting height:

Heave

Surge

Sway

Maximum ship motion:

Roll

Pitch

Yaw Rate

Up to 50 knots

Up to 150 feet.

0.5G

0.2G

0.2G

+/- 25 degrees (Roll only)

+/- 20 degrees (combined with Pitch)

+/- 15 degrees

12 deg/sec, 15 deg/sec/sec

8-4


8.8.

144” Radome Assembly

Type

Material

Size

Base Hatch size

Side Door

Number of panels

Installed height:

Rigid dome

Composite foam/fiberglass

144" Diameter x 142" High

18" high x 34" wide

18” wide x 36” high

Twelve panels (6 upper & 6 lower panels), one top cap and one base pan

164" including base frame if mounted with standard Legs, 148” if

Flush-mounted

Installed weight

RF attenuation

MAX 1800 LBS (including Antenna Pedestal Assembly)

1.5 dB @ 6 GHz, dry

1.5 dB @ 12 GHz, dry

1.5 dB @ 14 GHz, dry

Wind:

Ingress Protection Rating

Withstand relative average winds up to 100 MPH from any direction.

All Sea Tel radomes have an IP rating of 56

NOTE: Radome panels can absorb up to 50% moisture by weight. Soaked panels will also have higher attenuation.

8.9.

Environmental Conditions (ADE)

Temperature: -20 degrees C to 55 degrees C.

Humidity: Up to l00% @ 40 degrees C, Non-condensing.

Spray:

Icing:

Rain:

Wind:

Vibration:

Frequency Range, Hz

4 - 10

10 - 15

15 - 25

25 - 33

Corrosion

Resistant to water penetration sprayed from any direction.

Survive ice loads of 4.5 pounds per square foot. Degraded RF performance will occur under icing conditions.

Up to 4 inches per hour. Degraded RF performance may occur when the radome surface is wet.

Withstand relative average winds up to 100 MPH from any direction.

Withstand externally imposed vibrations in all 3 axes, having displacement amplitudes as follows:

Peak Single Amplitude

0.100 inches (0.1G to 1.0G)

0.030 inches (0.3G to 0.7G)

0.016 inches (0.4G to 1.0G)

0.009 inches (0.6G to 1.0G)

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

8-5


8.10.

Cables

8.10.1.

Antenna Control Cable (Provided from ACU-MUX)

RS-422 Pedestal Interface

Type

Number of wires

Wire Gauge

Communications Parameters:

Interface Protocol:

Interface Connector:

Shielded Twisted Pairs

24 AWG or larger

9600 Baud, 8 bits, No parity

RS-422

DE-9P

8.10.2.

Antenna Transmit & Receive IF Coax Cables (Customer Furnished)

Due to the dB losses across the length of the RF coaxes at L-Band, Sea Tel recommends the following 50 ohm coax cable types (and their equivalent conductor size) for our standard pedestal installations:

Run Length Coax Type Conductor Size

up to 35 ft up to 75 ft up to 150 ft up to 200 ft

RG-58

RG-8 or LMR-300

RG-213, RG214 or LMR-400

LDF4-50 Heliax or LMR-500

20 AWG

18 AWG

14 AWG

10 AWG

Up to 300 ft LMR-600 6 AWG

For runs longer that 300 feet, Sea Tel recommends Single-mode Fiber Optic Cables with Fiber Optic converters.

8.10.3.

Multi-conductor Cables (Customer Furnished)

Due to the voltage losses across the multi-conductor cables, Sea Tel recommends the following wire gauge for the AC & DC multi-conductor cables used in our standard pedestal installations:

Run Length Conductor Size

up to 50 ft up to 100 ft up to 150 ft up to 250 ft

Up to 350 ft

20 AWG (0.8 mm)

18 AWG (1.0 mm)

16 AWG (1.3 mm)

14 AWG (1.6 mm)

12 AWG (2.0 mm)

8.10.4.

AC Power Cable (Pedestal & Rf Equipment)

Voltage: 110 or 220 volts AC (220 VAC Recommended)

Pedestal Power: 150 VA MAX

RF Equipment Power: 250 VA MAX Comtech CSAT 6070-25 ONLY

8.10.5.

AC Power Cable (Optional Marine Air Conditioner)

Voltage: 220 volts AC

Breaker Required

Full Load Amperage:

20 Amp

5.4 Amps

8-6


8.10.6.

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:

Insulation: see Multi-conductor Cables spec above

600 VAC

8-7



8-8

9797B-39 Ku-Band TX/RX Antenna Drawings

9.

Drawings

The drawings listed below are provided as apart of this manual for use as a diagnostic reference. Spare Parts kits listings are provided as part number reference for replaceable parts and common assemblies.

9.1.

9797B-39 Model Specific Drawings

Drawing Title

131473-104_A

131471-1_A

131474-1_A

131472_A

127991-1_C1

131476-1_A

126361-1_G

111365-17_N1

123723-9_B1

123496-1_C1

122508_E

123908_B1

System, Model 9797B-39

System Block Diagram – Model 9797B-39 LBUC

General Assembly – Model 9797B-39 MBUC

Antenna System Schematic – Model 9797B-39

Antenna Assembly, 2.4M Offset

TX Wavegiude run

Feed Sub-Assembly, Ku-Band , Linear

Radome Ass’y, 144 Inch

Radome Base Ass’y, 75 In. STL

Air Conditioner, Internal

AC Install Assy, Internal

Installation Arrangement

9-3

9-5

9-10

9-12

9-13

9-16

9-18

9-21

9-23

9-25

9-26

9-28

9.2.

Series 97 General Drawings

Drawing Title

128878-1_A

1288787-1_A

128878-3_A

126374_A

121628-4_N2

129710-2_A1

Spare Parts Kit, XX97B / XX00B, Standard

Spare Parts Kit, XX97B / XX00B, Premium

Spare Parts Kit, XX97B / XX00B,Master

Pedestal Harness Schematic

Terminal Mounting Strip

400MHz Base Modem Rack Panel Ass’y

9-30

9-31

9-32

9-33

9-34

9-36

9-1

Drawings 9797B-39 Ku-Band TX/RX Antenna


9-2

PART NO

SINGLE LEVEL MFG BILL OF MATERIAL

REV DESCRIPTION REFERENCE DESIGNATOR FIND QTY

16

17

26

27

28

9

10

11

15

7

8

5

6

3

4

1

2

1

EA

131474-1

1

EA

111365-17

1

EA

123723-9

0

EA

114749-3

0

EA

117275-1N110

0

EA

117199-2

0

EA

113031-3

1

EA

126361-1

1

EA

131726-1

1

EA

129337-1

0

EA

123496-X

1

EA

127660-5

1

EA

129615-2

1

EA

130857-27

1

EA

122539-1

1

EA

114569

1

EA

124877-1

D

B

A

B

C

A1

G

X1

X1

B

D

C

A

N1

B1

B2

GENERAL ASS'Y, 9797B-39

RADOME ASS'Y, 144 INCH, WHITE/SIDE AC

RADOME BASE ASS'Y, 75 IN., STL, INTERN

LNA, KU WIDEBAND, 10.9-12.8 GHZ, 50 DB,

TRANSCEIVER, CODAN 5900, KU, INTEL H

POWER SUPPLY, CODAN 5582

TWT AMPLIFIER, XICOM XTD-400W, KU-BA

FEED SUB-ASS'Y, KU-BAND, LINEAR

TVRO KIT, 9797B KU BAND, CO & CROSS

INSTALL KIT, AIR CON. BREAKER

(REF ONLY) AIR CONDITIONER, R417A, IN

DAC-2302 RACKMOUNT ASS'Y, 9 WIRE, 14

BELOW DECK KIT, L-BAND, 70/140 & 400M

CUSTOMER DOC PACKET, 9797B-39, 400M

SHIP STOWAGE KIT, XX97

BALANCE WEIGHT KIT

DECAL KIT, XX97, SEATEL (126 IN/144 IN R

SYSTEM, 9797B-39, AC RDY

PROD FAMILY

97 TX/RX

EFF. DATE

25-Feb-10

SHT 1 OF 1

DRAWING NUMBER

131473-104

REV

A

B

A

7

10

1

3

8

D

8

8

7

9

6

4

5 4

3

REV ECO# DATE

A 7140 2-24-10

2

REVISION HISTORY

DESCRIPTION

ITEM 15 WAS 127660-4; ITEM 16 WAS 129615-2; RELEASED TO PRODUCTION, WAS X2

1

BY

K.D.H.

D

C

7 6

9

C

5

6

5

4

2

REFERENCE DRAWINGS;

131471 SYSTEM BLOCK DIAGRAM

131472 ANTENNA SYSTEM SCHEMATIC

126374 PEDESTAL SCHEMATIC

123908 INSTALLATION ARRANGEMENT

121910 SHIPYARD SPEC.

124877 DECAL KIT

DASH

101

104

201

POL

LIN

LIN

LIN

BAND

KU

KU

KU

WATT

400

400

400

RF MFR

XICOM

XICOM

XICOM

204 LIN KU

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN INCHES.

X.X = .050

X.XX = .020

X.XXX = .005

ANGLES: .5

INTERPRET TOLERANCING PER ASME Y14.5M - 1994

400

DRAWN BY:

K.D.H.

DRAWN DATE:

1-28-10

APPROVED BY:

XICOM

MATERIAL:

N/A

APPROVED DATE:

FINISH:

N/A

3rd ANGLE

PROJECTION

3

LNB

SEE FACTORY ORDER

SEE FACTORY ORDER

SEE FACTORY ORDER

SEE FACTORY ORDER

TITLE:

OTHER

AC RDY

AC RDY

Tel. 925-798-7979 Fax. 925-798-7986

SYSTEM,

9797B-39

SIZE SCALE:

B

FIRST USED:

1:18

9797B-39

2

DRAWING NUMBER

131473

SHEET NUMBER

1

REV

1 OF 1

A

A

B

PART NO



20

21

22

23

9

10

11

19

7

8

5

6

3

4

1

2

28

30

31

32

33

34

24

25

26

27

1

EA

131474-1

1

EA

123496-X

1

EA

127991-1

1

EA

126361-1

1

EA

113031-3

1

EA

114749-3

1

EA

117280-1

2

EA

127386-2

1

EA

117276-11

1

EA

117199-2

1

EA

119724-1

2

EA

130854-1

2

EA

115708-X

1

EA

125570-4

1

EA

127513-1

1

EA

116024-3

2

EA

116000-1

1

EA

116000-2

1

EA

116034

1

EA

122208-1

1

EA

121966-6

1

EA

125726-3

1

EA

126375-3

1

EA

131262-3

1

EA

131757-1

1

EA

131785-48

K

F

N

D2

J

B1

L

K

B

A

A1

B2

C1

A3

A

B

C1

G

A

B

B

C

X1

X1

GENERAL ASS'Y, 9797B-39

(REF ONLY) AIR CONDITIONER, R417A, IN

ANTENNA ASS'Y, 2.4M OFFSET, 9797B


TWT AMPLIFIER, XICOM XTD-400W, KU-BA

LNA, KU WIDEBAND, 10.9-12.8 GHZ, 50 DB,

LNB, KU, 10.95-11.70 GHZ, NJR2637ENO

LNB, SMW, KU BAND, QUAD LO

CONVERTER MODULE, CODAN 5900, NAR

POWER SUPPLY, CODAN 5582

POWER CABLE, CODAN DC

MODEM ASS'Y, 400MHZ FSK, 4CH, ADE, R

(REF ONLY) CIRCUIT BREAKER BOX ASS'

POWER SUPPLY ASS'Y, COSEL 150W, RH

PCU ENCLOSURE ASS'Y, XX97B, STD

SHIELDED POLANG RELAY ASS'Y

SERVO AMPLIFIER ASS'Y, 2.5A

SERVO AMPLIFIER ASS'Y, 5A

HOME SWITCH ASS'Y, SHIELDED

LEVEL CAGE ASS'Y, SIDE EXIT, 080 P., 90

GPS ANTENNA, RETERMINATED, 32.0 L

HARNESS ASS'Y, BRAKE, 56 IN, XX07

HARNESS ASS'Y, PEDESTAL

HARNESS ASS'Y, INTERFACE, 997B/06, 40

HARNESS, REFLECTOR, LNA PWR

HARNESS, 400 MHZ MUX TO CODAN TRX,

SYSTEM BLOCK DIAGRAM, 9797B-39

PROD FAMILY

LIT

EFF. DATE

25-Feb-10

SHT 1 OF 3

DRAWING NUMBER

131471-1

REV

A

PART NO



70

71

72

73

61

62

63

63

74

75

80

81

82

56

57

58

60

52

53

54

55

43

44

50

51

35

40

41

42

1

EA

131369-120

1

EA

124647-1

1

EA

124287-56

1

EA

124288-36

1

EA

128195-48

1

EA

131786-120

1

EA

121484-140

1

EA

115208-10

1

EA

114973-48

1

EA

111079-8

2

EA

111079-6

1

EA

111079-4

2

EA

113303-5

1

EA

121281

2

EA

114972-2

1

EA

116466

2

EA

115492-1

2

EA

110567-14

1

EA

110495-6

2

EA

110495-20

1

EA

131754-1

1

EA

112331-5

1

EA

111202-104

1

EA

111202-106

1

EA

110496-5

1

EA

121592-5

1

EA

128388

1

EA

128290-1

1

EA

131752-1

A1

A1

X1

A1

B

H

B

A2

A

A

A1

D

G1

C

X1

N

D

U

A

C1

E

G1

G1

G1

HARNESS, 400MHZ MODEM TO XICOM, RS

POWER RING ASS'Y, 20 AMP (22 IN HARN

CABLE ASS'Y, PEDESTAL AC POWER

CABLE ASS'Y, AC POWER, 36 IN

CABLE ASS'Y, AC PWR TO CODAN PSU

CABLE ASS'Y, AC PWR TO XICOM PSUI, 12

CABLE ASS'Y, SMA TO SMA, LA290, 140 IN

CABLE ASS'Y, SUPERFLEX, N(M)-N(M), 10

CABLE ASS'Y, COAX, TYPE N, 48 IN.

CABLE ASS'Y, SMA(M)-N(M), 8 FT.



CABLE ASS'Y, SMA 90 - SMA (M), 84 IN

CABLE ASS'Y, SMA(F)-SMA(M), 3 IN.

CABLE ASS'Y, SMA(M) - SMA(M), 72 IN

ROTARY JOINT, 4.5 GHz, DUAL COAX.

ADAPTER, N(F)-SMA(F), W/FLANGE

ADAPTER, N(F)-F(M), STRAIGHT

ATTENUATOR, 6 DB

ATTENUATOR, 20 DB

TVRO LNB MOUNTING ASS'Y

POWER DIVIDER, 2-WAY, SMA, 8 TO 12.4

CABLE ASS'Y, .141,SEMI-RIGID, SMA (M) T

CABLE ASS'Y, .141, SEMI-RIGID,SMA (M) T

WAVEGUIDE ADAPTER, WR-75 TO SMA, 1

WAVEGUIDE ADAPTER, WR-75 TO SMA, 1

FILTER, RECEIVE BANDPASS, KU-BAND

WAVEGUIDE, WR-75, 180 DEG H-BEND W/

FILTER, BANDPASS, KU, 10.95 - 12.75 GHZ


PROD FAMILY

LIT

EFF. DATE

25-Feb-10

SHT 2 OF 3

DRAWING NUMBER

131471-1

REV

A

PART NO



121

122

123

130

111

112

113

120

131

132

133

134

102

103

105

110

96

97

100

101

92

93

94

95

83

84

90

91

1

EA

126144-1

1

EA

115551-915

1

EA

115477-6

1

EA

115551-220

2

EA

110171-3

1

EA

125157-1

1

EA

117459-2

1

EA

115551-272

1

EA

114280-16

1

EA

110172-1

1

EA

127660-5

1

EA

130686-1

1

EA

121628-4

1

EA

131201-1

2

EA

130854-2

1

EA

113303-10

1

EA

113303-9

4

EA

115384-3

3

EA

119749-6

2

EA

115492-1

2

EA

111003-18

1

EA

112330-2

1

EA

113885-2

1

EA

116298-1

1

EA

116298-3

1

EA

131205-1

1

EA

120643-25

1

EA

119479-10

G

B

B

B1

C

B1

B

G

U

U

A

B

E2

B

C1

A

P

G

D

B

C

E4

E1

A1

WAVEGUIDE, WR-75, 180 DEG E-BEND

WAVEGUIDE, WR-75, EXTENSION, 1.5 IN,

WAVEGUIDE, WR-75, ROTARY JOINT, L-ST

WAVEGUIDE, WR-75, EXTENSION, 2 IN

WAVEGUIDE, WR-75 FLEXIBLE, 24 IN

DIPLEXER, DPX75K-002, WR-75

E4

WAVEGUIDE, WR-75, RIGID, 9797, LEFT

WAVEGUIDE, WR-75, EXTENSION, 7.2 IN

E10 WAVEGUIDE, WR-75, 90 DEG H-BEND, 1.50

WAVEGUIDE, WR-75, 90 DEG E-BEND, 1.50

DAC-2302 RACKMOUNT ASS'Y, 9 WIRE, 14

BELOW DECK KIT, 9797B-50

TERMINAL MOUNTING STRIP ASS'Y, ACU

BASE MUX RACK PANEL ASS'Y, 400 MHZ,

MODEM ASS'Y, 400MHZ FSK, 4CH,BDE, RS

CABLE ASS'Y, SMA 90 - SMA (M), 8 IN

CABLE ASS'Y, SMA 90 - SMA (M), 17 3/8 IN

CABLE ASS'Y, SMA(M)-BNC(M), 72 IN.

CABLE ASS'Y, BNC - BNC, 6 FT.

ADAPTER, N(F)-SMA(F), W/FLANGE

ADAPTER, BNC(F)-F(M)

TERMINATOR, SMA TYPE, .5 WATT, DC 26.

RF SPLITTER, 70/140 MHZ, BNC (F)

INTERFACE HARNESS ASS'Y, DUAL MODE

INTERFACE HARNESS ASS'Y, PC TO MOD

INTERFACE HARNESS ASS'Y, PC TO MOD

CABLE ASS'Y, RS232, 9-WIRE, STRAIGHT,

CABLE ASS'Y, CAT5 JUMPER, 10 FT.


PROD FAMILY

LIT

EFF. DATE

25-Feb-10

SHT 3 OF 3

DRAWING NUMBER

131471-1

REV

A

PART NO



11

12

5

6

20

21

3

4

1

2

1

EA

128144-2

1

EA

129195-3

1

EA

131475-1

1

EA

127991-1

1

EA

131476-1

1

EA

131505-1

1

EA

121655-1

1

EA

123530-2

1

EA

131757-1

1

EA

115208-10

F

E

X1

A2

C

A

C1

A

PEDESTAL ASS'Y, XX97B, HIGH PWR

POWER ASS'Y, 220V, 34 IN. SHROUD, HIG

ELECT. EQ. FRAME, 9797B-39


WAVEGUIDE RUN, 9797B-39

BALANCE WEIGHT KIT, 9797B-39

LABELS INSTALLATION

GROUND BONDING KIT, XX97

(NOT SHOWN)

HARNESS, REFLECTOR, LNA PWR

(NOT SHOWN)

CABLE ASS'Y, SUPERFLEX, N(M)-N(M), 10

(NOT SHOWN)

GENERAL ASS'Y, 9797B-39

PROD FAMILY

97 TX/RX

EFF. DATE

25-Feb-10

SHT 1 OF 1

DRAWING NUMBER

131474-1

REV

A

D

8 7

6 5

4

4

3

REV ECO# DATE

A 7140 2-24-10

2

ITEM 2 WAS 121605-1

REVISION HISTORY

DESCRIPTION

1

BY

K.D.H.

D

C

5

B

A

8 7

2

11

6

1

5

3

C

4

REFERENCE DRAWINGS;

131471 SYSTEM BLOCK DIAGRAM

131472 ANTENNA SYSTEM SCHEMATIC

126374 PEDESTAL SCHEMATIC

NOTES: UNLESS OTHERWISE SPECIFIED

1. APPLY ADHESIVE PER SEATEL SPEC. 121730.

2. TORQUE THREADED FASTENERS PER

SEATEL SPEC. 122305.

3. INSTALL GROUND BONDING KIT PER SEATEL SPEC. 127315.

4.

ROUTE ALL HARNESS AND CABLE ASSEMBLIES

PER SEATEL SPEC. 121872.



X.X = .050

X.XX = .020

X.XXX = .005

ANGLES: .5


MATERIAL:

N/A

DRAWN BY:

K.D.H.

DRAWN DATE:

1-28-10

APPROVED BY:

APPROVED DATE:

FINISH:

N/A

3rd ANGLE

PROJECTION

3

TITLE:

Tel. 925-798-7979 Fax. 925-798-7986

GENERAL ASS'Y,

9797B-39

SIZE SCALE:

B

FIRST USED:

1:14

9797B-39

2

DRAWING NUMBER

131474

SHEET NUMBER

1

REV

1 OF 1

A

A

B

FIND QTY PART NO

7

8

5

6

3

4

1

2

1 EA 116803

1 EA 120292

1 EA 120293

1 EA 120294

1 EA 123208

1 EA 128430-1

1 EA 118294-6

1 EA 118294-4

50 8 EA 114593-162

51 8 EA 114581-011

52 8 EA 114580-011

60 3 EA 114586-540

61 3 EA 114625-108

62 8 EA 114580-029

63 6 EA 114583-029

64 2 EA 114586-537

65 2 EA 114581-029

SINGLE LEVEL MFG BILL OF MATERIAL

REV DESCRIPTION

C REFLECTOR, OFFSET, 2.4M

D1 FEED STRUT, TOP

A1 FEED STRUT, LEFT

A1 FEED STRUT, RIGHT

D SCALAR PLATE ASS'Y, DISHSCAN

HARDWARE KIT, INSTALL OFFSET ANTENNA

A3 HARDWARE KIT, WR-75, UG FLANGE, M4

A3 HARDWARE KIT, WR-229, CPR FLANGE

SCREW, SOCKET HD, 10-32 x 3/8, S.S.

WASHER, LOCK, #10, S.S.

WASHER, FLAT, #10, S.S.

SCREW, HEX HD, 1/4-20 x 1-1/4, S.S.

WASHER, FENDER, 1/4 IN, 18-8 S.S. (1

WASHER, FLAT, 1/4, S.S.

NUT, HEX, 1/4-20, S.S.

SCREW, HEX HD, 1/4-20 x 3/4, S.S.

WASHER, LOCK, 1/4, S.S

REFERENCE DESIGNATOR

PROD FAMILY

COMMON


EFF. DATE

9/25/2009

SHT 1 OF 1

DRAWING

NUMBER

127991-1

REV C1

PART NO



50

51

55

56

12

15

20

21

59

60

65

69

10

11

5

8

3

4

1

2

1

EA

117459-2

1

EA

115551-272

1

EA

114280-16

2

EA

110171-3

1

EA

110172-1

0

EA

131753-1

2

EA

115997-2

2

EA

115997-3

4

EA

115998-10

2

EA

121758

5

EA

118294-1

1

EA

118294-12

8

EA

114588-827

4

EA

114588-836

16

EA

114580-011

4

EA

114581-011

4

EA

114583-011

4

EA

114586-545

8

EA

114580-029

4

EA

114583-029

H

J5

A

A3

B1

E1

G

X1

G1

E4

WAVEGUIDE, WR-75, RIGID, 9797, LEFT

WAVEGUIDE, WR-75, EXTENSION, 7.2 IN

E10 WAVEGUIDE, WR-75, 90 DEG H-BEND, 1.50

WAVEGUIDE, WR-75 FLEXIBLE, 24 IN

WAVEGUIDE, WR-75, 90 DEG E-BEND, 1.50

WAVEGUIDE DIPLEXER ASS'Y

BRACKET, RIGID WAVEGUIDE

SEE SYSTEM

BRACKET, WAVEGUIDE

STRAP, RIGID WAVEGUIDE, WR-75

BRACKET, RIGID WAVEGUIDE

HARDWARE KIT, WR-75, UG FLANGE, 6-32,

HARDWARE KIT, WR-75, UG FLANGE, BLIN

SCREW, PAN HD, PHIL, 10-32 x 3/8, S.S.

SCREW, PAN HD, PHIL, 10-32 x 1-1/2, S.S.


A


NUT, HEX, 10-32, S.S.

SCREW, HEX HD, 1/4-20 x 2-1/2, S.S.


NUT, HEX, 1/4-20, S.S.

WAVEGUIDE RUN, 9797B-39

PROD FAMILY

COMMON

EFF. DATE

25-Feb-10

SHT 1 OF 1

DRAWING NUMBER

131476-1

REV

A

D

8 7

6

C

60 68 68 69 2X

B

12

50 58 58 56 59 2X

A

15

3

8 7 6

2

5

4

5

4X 20

5

21

4

20

3

REV ECO# DATE

A 7140 2-24-10

2

ITEM 2 WAS 119318-4

REVISION HISTORY

DESCRIPTION

4

1

BY

K.D.H.

D

8

1

4X 50 58

2X 2

2X 11

2X 10

4X 51 58

C

2X 60 68 68 69

4

15

2X

12

50 58 58 56 59

NOTES: UNLESS OTHERWISE SPECIFIED

1. APPLY ADHESIVE PER SEATEL SPEC. 121730.

2.

TORQUE THREADED FASTENERS PER

SEATEL SPEC. 122305.



X.X = .050

X.XX = .020

X.XXX = .005

ANGLES: .5


MATERIAL:

N/A

DRAWN BY:

K.D.H.

DRAWN DATE:

1-28-10

APPROVED BY:

APPROVED DATE:

FINISH:

N/A

3rd ANGLE

PROJECTION

3

TITLE:

Tel. 925-798-7979 Fax. 925-798-7986

WAVEGUIDE RUN,

9797B-39

SIZE SCALE:

B

FIRST USED:

1:10

9797B-39

2

DRAWING NUMBER

131476

SHEET NUMBER

1

REV

1 OF 1

A

A

B

FIND QTY PART NO

7

8

5

6

3

4

1

2

1 EA 130916-2

1 EA 123660-1

1 EA 118828

1 EA 128388

3 EA 108519-4

1 EA 108517-2

1 EA 123282

1 EA 116225

9 1 EA 115551-220

10 1 EA 130916-1

11 1 EA 115477-6

12 1 EA 123309

13 1 EA 117543

14 2 EA 119269-1

16 12 EA 114593-124

17 4 EA 114593-127

18 16 EA 114580-007

20 1 EA 118294-1

22 2 EA 114586-535

23 6 EA 114581-029

24 1 EA 114586-544

25 1 EA 114583-029

26 2 EA 114576-539

27 4 EA 114588-079

28 16 EA 114581-007

29 2 EA 114580-029

30 8 EA 114576-144

31 1 EA 117542


REV DESCRIPTION

A BRACKET, FEED COUNTERWEIGHT, WR-75, 2

A1 SCALAR PLATE, KU-BAND

A OMT, KU-BAND

A2 FILTER, RECEIVE BANDPASS, KU-BAND

E WEIGHT, TRIM 7.0 OZ, BLUE

B WEIGHT, TRIM 1.0 OZ

A FEED SPACER, KU-BAND, DISHSCAN

C1 BRACKET, COUNTERWEIGHT

E4 WAVEGUIDE, WR-75, EXTENSION, 2 IN

A BRACKET, FEED COUNTERWEIGHT, WR-75, 2

C WAVEGUIDE, WR-75, ROTARY JOINT, L-STY

A1 FEED THROAT, KU-BAND, LINEAR, DISHSCA

A STOP, POLANG

A1 GASKET, WR-75, (UG HALF)




A3 HARDWARE KIT, WR-75, UG FLANGE, 6-32,

SCREW, HEX HD, 1/4-20 x 1/2, S.S.


SCREW, HEX HD, 1/4-20 x 2-1/4, S.S.

NUT, HEX, 1/4-20, S.S.

SCREW, FLAT HD, PHIL, 1/4-20 x 5/8, S




SCREW, FLAT HD, PHIL, 6-32 x 1/4, S.S

D1 GEAR, POLANG SPINDLE


PROD FAMILY

COMMON


EFF. DATE

12/28/2009

SHT 1 OF 2

DRAWING

NUMBER

126361-1

REV G

FIND QTY PART NO

32 1 EA 114771-33

33 1 EA 119499

34 1 EA 115439-2

38 4 EA 114593-214

39 2 EA 119721


REV DESCRIPTION

B SNAP RING, EXTERNAL, 2.500 SHAFT, LT

B RING, RETAINER, BEARING

BEARING, X-STYLE, 2.500 ID, 3.000 OD,

SCREW, SOCKET HD, 1/4-20 x 2-1/4, S.S

B COUNTERWEIGHT, KU-BAND DROP-IN FEED


PROD FAMILY

COMMON


EFF. DATE

12/28/2009

SHT 2 OF 2

DRAWING

NUMBER

126361-1

REV G

FIND QTY

14

17

28

11

12

1

9

0

0

0

0

1

12

1

1

3

EA

117762-1

EA

110327

EA

109119-17

EA

124903-1

EA

114586-538

EA

114586-541

EA

114625-107

EA

114583-029

EA

109783-2

PART NO


REV DESCRIPTION REFERENCE DESIGNATOR

B

M

F2

B1

SILICONE ADHESIVE, WHT RTV 122, 10.1

NOT SHOWN

HARDWARE KIT, 144 INCH RADOME

NOT SHOWN

RADOME FAB ASS'Y, 144 INCH, WHITE/SID

STRAIN RELIEF ASS'Y

INCLUDED IN HARDWARE KIT

SCREW, HEX HD, 1/4-20 x 1, S.S.

SCREW, HEX HD, 1/4-20 x 1-1/2, S.S.



WASHER, FENDER, 1/4, (1 IN OD), S.S.

NUT, HEX, 1/4-20, S.S.


WRENCH, L

RADOME ASS'Y, 144 INCH, WHITE/SIDE ACCESS

PROD FAMILY

COMMON

EFF. DATE

25-Sep-08

SHT 1 OF 1

DRAWING NUMBER

111365-17

REV

N1

PART NO



58

59

60

54

55

56

57

50

51

52

53

3

4

1

2

1

EA

123724-1

1

EA

124459-1

1

EA

123728-2

1

EA

122508

6

EA

114622-544

4

EA

114622-724

8

EA

114622-628

12

EA

114580-029

8

EA

114580-033

16

EA

114580-032

4

EA

114581-033

8

EA

114581-031

6

EA

114583-029

4

EA

114583-033

8

EA

114583-031

A

E

B

A

RADOME BASE FRAME ASS'Y, 75 IN, STEE

RADOME BASE PAN FAB, WHITE, W/INTER

RADOME PAN ACCESS ASS'Y, WHITE

A/C INSTALL ASS'Y, INTERNAL

SCREW, HEX HD, FULL THRD, 1/4-20 x 1-1/

SCREW, HEX HD, FULL THRD, 1/2-13 x 3 IN

SCREW, HEX HD, FULL THRD, 3/8-16 x 1-1/



WASHER, FLAT, 3/8, S.S. (1 OD X 13/32 ID)

WASHER, LOCK, 1/2, S.S.

WASHER, LOCK, 3/8, S.S.

NUT, HEX, 1/4-20, S.S.

NUT, HEX, 1/2-13, S.S.

NUT, HEX, 3/8-16, S.S.

RADOME BASE ASS'Y, 75 IN., STL, INTERNAL AC, WHT PAN

PROD FAMILY

COMMON

EFF. DATE

02-Jul-09

SHT 1 OF 1

DRAWING NUMBER

123723-9

REV

B1

NOTES: (UNLESS OTHERWISE SPECIFIED)

1.

APPLY ADHESIVE PER SEA TEL SPEC. 121730.

3

REV.

ECO#

DATE

A

N/A 1-14-05

RELEASED TO PRODUCTION

A1 NONE

04-13-05 -9 ADDED

A2

B

B1

DESCRIPTION

NONE

04-29-05 -9 BASE FRAME WS STL. LG. FOOT, BASE PAN WS P/N 123726-2

4888

05-31-05 FOR -5, -6, -8, -9 BASE PAN WAS P/N 123726-1.

N/A

01-24-07 ADD INTERNAL AC PAN FAB CUTOUTS ( NOT PREVOUSLY SHOWN).

DOCUMENT NO. 117084 REV. C

50 52 52

2

1

HEX SCREW, 1/4-20 X 1.25

FLAT WASHER

FLAT WASHER

NUT

6 PLCS.

3

2

1

4

EXTERNAL AC

DASH # BASE FRAME AC OPTION

-1

-2

-3

-4

-5

-6

-7

-8

-9

STL.

AL.

STL.

STL.

STL.

NO

NO

NO

NO

EXTERNAL

AL.

STL. LG. FOOT

EXTERNAL

NO

STL. LG. FOOT EXTERNAL

STL INTERNAL

COLOR BASE PAN

BASE PAN

ACCESS

WHITE

ASSY

123726-1 123728-2

WHITE 123726-1 123728-2

US NAVY GREY 123726-2 123728-3

BRT GREY

WHITE

123726-3

124458-1

123728-4

123728-2

WHITE

WHITE

WHITE

WHITE

124458-1 123728-2

123726-1 123728-2

124458-1 123728-2

124459-1 123728-2

TOLERANCES


X.X

X.XX

X.XXX

ANGLES

3rd ANGLE

PROJECTION

SCALE:

DATE:

TITLE:

MODEL:

XX97

INTERNAL AC (REF. ONLY)

1:16

12-14-04

APPROVED BY:

DRAWN BY:

DRAWING SIZE:

SCC

B

RADOME BASE ASSY, 75 IN.

SHEET:

1 OF 1

DRAWING NUMBER

123723

REVISION

B1

DRAWING CREATED IN SOLIDWORKS

BY

AMN

AEF

MSF

V.S.

SL.

D

B

A

C

8

8

18 MAX

IN

7

CONTROL PANEL

AIR FLOW

.56

3.4

6

OUT

31.88

33.00

30.00

5 4

12.80

17.85

3

REV ECO# DATE

A 4609 10-05-04 RELEASED TO PRODUCTION

2

REVISION HISTORY

DESCRIPTION

B

C

C1

4858

N/A

N/A

5-5-05 ADD REFERENCE 121113

3-2-06

1-9-07

CHANGED TO TABLE FORMAT

CREATED CAD OUTLINE DRAWING

2.53

4X .28

6.9

5.4

3.9

2X 1.50

1

2.2

1.0

BY

AMN

LR

V.S.

RJW

D

C

7

INLET

1.25

.80

A

.80

OUTLET

1/2" NPT DRAIN

CLOSED CELL FOAM

A

15.25

MAX.

15.9

Controlle r Ma nufa cture r Pa rt Num be r Ma nufa cture rs De scription

6 5 4

VIEW A-A

BOTTOM VIEW



X.X = .050

X.XX = .020

X.XXX = .005

ANGLES: .5


MATERIAL:

N/A

DRAWN BY:

RJW

DRAWN DATE:

1/8/2007

APPROVED BY:

APPROVED DATE:

FINISH:

N/A

3rd ANGLE

PROJECTION

SIZE

B

FIRST USED:

SCALE:

1:8

3 2

Sea

Tel

4030 NELSON AVENUE

CONCORD, CA 94520

Tel. 925-798-7979 Fax. 925-798-7986

TITLE:

AIR CONDITIONER,

INTERNAL

DRAWING NUMBER

123496

SHEET NUMBER

REV

1 OF 1

C1

1

A

B

FIND QTY PART NO

3

4

1

2

1 EA 116941

1 EA 116938

2 EA 124903-1

1 EA 121008-72

6 4 EA 120470

60 4 EA 114586-535

61 4 EA 114586-537

62 8 EA 114581-029

63 4 EA 114625-107


REV DESCRIPTION

0 STREET ELBOW, 1/2 INCH

0 FLEX HOSE, 1/2 INCH

B1 STRAIN RELIEF ASS'Y

D2 CABLE ASS'Y, AC INPUT, 72 IN. (SPADE

ISOLATORS, BUMPER

SCREW, HEX HD, 1/4-20 x 1/2, S.S.

SCREW, HEX HD, 1/4-20 x 3/4, S.S.


WASHER, FENDER, 1/4, (1 IN OD), S.S.


(NOT SHOWN)

PROD FAMILY

COMMON

A/C INSTALL ASS'Y, INTERNAL

EFF. DATE

12/28/2009

SHT 1 OF 1

DRAWING

NUMBER

122508

REV E

DETAIL A

SCALE: NONE

FLUSH MOUNT RADOME

MOUNTING HOLE PATTERN

SEE DETAIL A

MOUNTING HOLE PATTERN

W/LEGS

ITEM DESCRIPTION

NET*

WEIGHT (LB.)

ITEM DESCRIPTION WEIGHT (Lb.) **

ITEM DESCRIPTION WEIGHT (Lb.) ***

FIND QTY PART NO

7

8

5

6

3

4

1

2

1 EA 127513-1

1 EA 122208-1

1 EA 115425-2

1 EA 114590-144

1 EA 117549-24

1 EA 121880-1

1 EA 114590-190

1 EA 128879-1


REV DESCRIPTION

B PCU ENCLOSURE ASS'Y, XX97B, STD

N LEVEL CAGE ASS'Y, SIDE EXIT, 080 P.,

J3 POT ASS'Y (ELEX.), POLANG

SCREW, SOCKET SET-CUP, 6-32 x 1/4, S.

B2 SPUR GEAR 24DP, 24 TOOTH

A1 MOTOR ASS'Y, POLANG, (PRI-FOCUS)

SCREW, SOCKET SET-CUP, 8-32 x 1/4, S.

A BELT KIT, XX97B, TX/RX


PROD FAMILY

COMMON

SPARE PARTS KIT, XX97B, TX/RX, STANDARD

EFF. DATE

12/16/2009

SHT 1 OF 1

DRAWING

NUMBER

128878-1

REV A

FIND QTY PART NO

7

8

5

6

3

4

1

2

1 EA 128878-1

1 EA 116024-3

1 EA 125974-1

1 EA 127825-1

1 EA 115352-473

1 EA 124039-1

1 EA 116311

1 EA 115352-472

9 1 EA 117319-10

10 1 EA 116059-1

11 1 EA 122264

12 1 EA 119985

13 1 EA 114789-810

16 2 EA 114588-832

17 1 EA 114588-831

18 1 EA 114588-836


REV DESCRIPTION

A SPARE PARTS KIT, XX97B, TX/RX, STANDA

L SHIELDED POLANG RELAY ASS'Y

C MOTOR, SIZE 34, BLDC W/ BRAKE, 15-PIN

C TIMING PULLEY, 15T

DOWEL PIN, 1/8 x 3/4 IN, S.S.

D MOTOR, SIZE 34, BLDC W/ ENCODER

B SPROCKET, 12T

DOWEL PIN, 1/8 x 5/8 IN, S.S.

C2 LOCTITE, 271 THREADLOCKER, 0.5ML

H MOTOR, LEVEL CAGE W/WIRING

A TIMING PULLEY, .080P (MXL), 24T

A SCREW, SET, 6-40 x .188 IN LG, S.S.

TRANSPORT CONTAINER

SCREW, PAN HD, PHIL, 10-32 x 7/8, S.S


SCREW, PAN HD, PHIL, 10-32 x 1-1/2, S


PROD FAMILY

COMMON

SPARE PARTS KIT, XX97B, TX/RX, PREMIUM

EFF. DATE

12/16/2009

SHT 1 OF 2

DRAWING

NUMBER

128878-2

REV B

FIND QTY PART NO

7

8

5

6

3

4

1

2

1 EA 128878-2

1 EA 116034

1 EA 116466

1 EA 121250-2

1 EA 116782-2

1 EA 117611-4

1 EA 117611-3

1 EA 116782-1


REV DESCRIPTION

B SPARE PARTS KIT, XX97B, TX/RX, PREMIU

F HOME SWITCH ASS'Y, SHIELDED

D ROTARY JOINT, 4.5 GHz, DUAL COAX.

C3 POWER RING ASS'Y, 22 IN, 96 IN. CONTA

K MODEM ASS'Y, BASE, 4-CH. RF

H MODEM ASS'Y, BASE, 3 CH, 50 OHM

H MODEM ASS'Y, PEDESTAL, 3 CH, 50 OHM

K MODEM ASS'Y, PEDESTAL, 4-CH. RF


SPARE PARTS KIT, XX97B-21/22/32, TX/RX, MASTER

PROD FAMILY

COMMON

EFF. DATE

12/16/2009

SHT 1 OF 1

DRAWING

NUMBER

128878-3

REV A1

PART NO



11

19

7

9

29

30

3

5

1

2

8

2

2

2

1

1

1

1

1

1

EA

112657

EA

126865-2

EA

112936-36

EA

116669-36

EA

121228-3072

EA

114588-146

EA

114588-107

EA

114588-144

EA

119478-5

EA

126877

D

E

D1

B1

C3

B1

MACHINING, TERMINAL MOUNTING STRIP

PCB ASS'Y, TERMINAL MOUNTING STRIP,

CABLE ASS'Y, D-SDB, 25 PIN, 36 IN

CABLE ASS'Y, D-SUB, 9-PIN, 36 IN.

STANDOFF, HEX, F/F, 6-32 X .25 OD X .50,




CABLE ASS'Y, RJ-45 SERIAL, 60 IN.

HARNESS ASS'Y, COMTECH MODEM INTE

TERMINAL MOUNTING STRIP ASS'Y, ACU

PROD FAMILY

COMMON

EFF. DATE

29-Sep-08

SHT 1 OF 1

DRAWING NUMBER

121628-4

REV

N2

FIND QTY PART NO

7

8

5

6

3

4

1

2

1 EA 116880

1 EA 130854-2

1 EA 116388

1 EA 115492-1

8 EA 114588-107

8 EA 114583-005

2 EA 114588-144

6 EA 114580-007

9 1 EA 110567-19

11 1 EA 113303-10

12 8 EA 114580-005

13 4 EA 114588-145


REV DESCRIPTION

F PANEL MACHINING, RACK, BASE MUX

MODEM ASS'Y, 400MHZ FSK, 4CH,BDE, RS

D BRACKET, CONNECTOR

C1 ADAPTER, N(F)-SMA(F), W/FLANGE

SCREW, PAN HD, PHIL, 4-40 x 5/16, S.

NUT, HEX, 4-40, S.S.



ADAPTER, N(F)-N(F), STRAIGHT, FLANGE

S CABLE ASS'Y, SMA 90 - SMA (M), 8 IN


SCREW, PAN HD, PHIL, 6-32 x 5/16, S.


BASE MUX RACK PANEL ASS'Y, 400MHZ, RS-232, 4 CH

PROD FAMILY

COMMON

EFF. DATE

9/24/2009

SHT 1 OF 1

DRAWING

NUMBER

129710-2

REV A1

No results