ACR Electronics GLOBALWATCH2 AIS

Installation Manual

Version 1.0

GlobalWatch™ AIS

Y1-03-0183-1 Rev. A

GlobalWatch2

TM AIS Installation Manual IVersion 1.0

Please read this first!

Warning:

Although ACR strives for accuracy in all its publications; this material may contain errors or

omissions, and is subject to change without prior notice. ACR shall not be made liable for any

specific, indirect, incidental or consequential damages as a result of its use. ACR

components may only be used in safety of life devices or systems, with the express written

approval of ACR, as the failure of such components could cause the failure of the ACR

device or system. If these fail, it is reasonable to assume that the safety of the user or other

persons may be endangered.

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Y1-03-0183-1 Rev. A

GlobalWatch2

TM AIS Installation Manual II Version 1.0

1GENERAL INTRODUCTION ................................................................................ 1

1.1 Description of AIS........................................................................................... 1

2GLOBALWATCH2TM AIS....................................................................................... 2

2.1 System Overview ........................................................................................... 2

3INSTALLATION .................................................................................................... 3

3.1 Installation Requirements............................................................................... 3

3.2 Installation Overview ...................................................................................... 3

3.3 Installation of VHF / GPS Antennas ............................................................... 6

4STARTING THE GLOBALWATCH2TM AIS............................................................ 8

4.1 MMSI Number: ............................................................................................... 8

4.2 Service and User Passwords: ........................................................................ 9

4.3 Changing the MMSI / IMO Numbers ............................................................ 13

4.4 Inputing Voyage Related Data – (User Password Protected)....................... 15

4.5 Setting Ship Related Data – (User Password Protected) ............................. 16

5TROUBLESHOOTING........................................................................................ 18

5.1 Reading and understanding Alarms: ............................................................ 18

5.2 Alarm Codes ................................................................................................ 19

5.3 Text Messages............................................................................................ 20

6ACCESSORIES.................................................................................................. 21

7CONTACT AND SUPPORT INFORMATION...................................................... 21

8TECHNICAL INFORMATION ............................................................................. 22

8.1 ANNEX......................................................................................................... 23

(1) MMSI Form

(2) Dimensional Drawings

(3) Connection Drawings

(4) Quick Replacement Guide

(5) Transponder Installation checklist

GlobalWatch2TM AIS Installation Manual

Index Page Number

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GlobalWatch2

TM AIS Installation Manual III Version 1.0

History of Changes

Date

Version

Status

Comments

Responsible

2004-09-01 1.0.0 Released Team

Y1-03-0183-1 Rev. A

GlobalWatch2

TM AIS Installation Manual 1Version 1.0

1 General Introduction

1.1 Description of AIS

What does the abbreviation AIS stand for?

AIS stands for: “Automatic Identification System”

What is AIS?

According to IALA regulations, AIS is defined as follows:

Very simply, the AIS is a broadcast Transponder system, operating in the VHF maritime

mobile Band. It is capable of sending ship information such as identification, position

course, speed and more, to other ships and to shore. It can handle multiple reports at

rapid update rates and uses Self-Organizing Time Division Multiple Access (SOTDMA)

technology to meet these high broadcast rates and ensure reliable and robust ship to ship

operation.

What are the performance standards of AIS?

The IMO defines the performance standards as follows:

- Ship to Ship working

- Ship to Shore working, including Long Range Application

- Automatic and continuous operation

- Provision of information messaging

- Utilization of maritime VHF channels

Which modules make up an AIS-Transponder?

The Modules:

- GPS receiver

- VHF Radio

- Antenna

- Computer (CPU)

- Power Supply

Appropriate application software connects the individual modules.

In which modes does AIS function?

AIS is required to function flawlessly in a variety of modes. The relevant regulations require:

The system shall be capable of

- An "autonomous and continuous" mode for operation in all areas. This mode

shall be capable of being switched to/from one of the following alternate modes by

a competent authority;

- An "assigned" mode for operation in an area subject to a competent authority

responsible for traffic monitoring such that the data transmission interval and/or

time slots may be set remotely by that authority;

- A "polling or controlled" mode, where the data transfer occurs in response to

interrogation from a ship or competent authority.

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GlobalWatch2

TM AIS Installation Manual 2Version 1.0

2 GlobalWatch2

TM AIS

2.1 System Overview

Unlike other AIS devices, the GlobalWatch2TM AIS combines all required functions into one

cabinet. Additionally, the GlobalWatch2TM AIS gives the operator a number of additional

features (easy mounting & installation, environmental protection, smallest dimensions).

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GlobalWatch2

TM AIS Installation Manual 3Version 1.0

3 Installation

3.1 Installation Requirements

General Requirements

Please note that international conventions, regulations, instructions and guidelines have to be

adhered to when installing the GlobalWatch2TM AIS.

The following points must be observed before installation can commence:

- Permission by the local authority to install such a device must be granted.

- Trained service personnel must undertake the installation.

- The

GlobalWatch2TM AIS must be fitted in a suitable place on the bridge.

- The VHF and GPS Antennas must be installed in a suitable position, where excellent

reception conditions apply

(refer to Chapter 3.4 Installation of VHF antenna – page 6)

- All available interfaces must be installed.

- The vessels power supply must suffice, and the GMDSS power supply has to be

used.

3.2 Installation Overview

Survey

AIS is considered part of the ship’s radio station and is surveyed together with radio

installation. Surveys on SOLAS Convention ships should be carried out in accordance with

the rules laid down in IMO Res. A 746(18) "Survey Guidelines under the harmonised system

of survey and certification" (R) 8, and "Protocol of 1988 relating to the International

Convention for the Safety of Life at Sea, 1974."

The GlobalWatch2TM AIS consists of one unit, which integrates all necessary modules.

Step-by-Step Installation Procedure:

• Mount the GlobalWatch2TM AIS close to ships operator workstation for traffic

surveillance and maneuvering.

• Use the VHF adapter cable to connect the VHF and GPS antenna cables as well as

the antennas.

• The sensor ECDIS can be connected to the GlobalWatch2TM AIS cabinet by the AIS

cable.

The device is driven by a 24V DC 7A supply, which is connected to the power terminal

at the connection box. The AIS should be connected to an emergency power source.

A battery capacity calculation together with GMDSS-equipment is needed!

• After performing these steps, the GlobalWatch2TM AIS automatically starts operation.

• The GlobalWatch2TM AIS has a ground terminal which has to be connected to ship

ground.

• Now configure the required initial system parameters according to Chapter 4 “Starting

the GlobalWatch2TM AIS” on page 8.

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GlobalWatch2

TM AIS Installation Manual 4Version 1.0

GlobalWatch2TM AIS Connection Diagram

Note: The ACR connection box includes a fuse of 6,3A. If it is not used, then the unit has to

be protected against high current by an external slow blow fuse of 6,3A.

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GlobalWatch2

TM AIS Installation Manual 5Version 1.0

Components and Interfaces

The diagram below illustrates which devices can be connected to the GlobalWatch2TM AIS.

Interface Designation Speed Direction

ECDIS CH 4 38400bps Input/Output

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GlobalWatch2

TM AIS Installation Manual 6Version 1.0

3.3 Installation of VHF / GPS Antennas

Interference to the Ship’s VHF Radiotelephone

The AIS ship borne equipment, like any other ship borne transceiver operating in the VHF

maritime band, may cause interference to a ship’s VHF radiotelephone. Because AIS is a

digital system, this interference may occur as a periodic (e.g. every 20 seconds) soft clicking

sound on the ship’s radiotelephone. This affect may become more noticeable if the VHF

radiotelephone antenna is located close to the AIS VHF antenna, and when the

radiotelephone is operating on channels near the AIS operating channels (e.g. channels 27,

28 and 86).

Attention should be paid to the location and installation of the various antennas, in order to

support the antenna characteristics in the best possible way.

VHF Antenna Installation

Antenna Location

Location of the mandatory AIS VHF-antenna should be carefully considered. Digital

communication is more sensitive than analogue/voice communication to interference created

by reflections caused by obstructions such as masts and booms. It may be necessary to

relocate the VHF radiotelephone antenna to minimize interference effects.

To minimise interference effects, the following guidelines apply:

• The AIS VHF antenna should have omni directional vertical polarisation providing 3 to 5

dB gain.

• The AIS VHF antenna should be placed in an elevated position, as free standing as

possible, with a minimum of 2 metres in horizontal direction from constructions made of

conductive materials. The antenna should not be installed close to any large vertical

obstruction. The AIS VHF antenna should have a visible sky of 360°.

• The AIS VHF antenna should be installed at least 3 meters away from interfering high-

power energy sources such as radar and other transmitting radio antennas, and out of the

way of the transmitting beam.

• There should not be more than one antenna on each level. The AIS VHF antenna should

be mounted directly above or below the ship’s primary VHF radiotelephone antenna, with

no horizontal separation and a minimum of 2 metres vertical separation. If it is located on

the same level as other antennas, the distance apart should measure at least 10 metres.

See also sample for antenna layout in the Appendix.

Cabling

The cable should be kept as short as possible to minimise attenuation of the signal. Double

shielded coaxial cables equal to or better than RG214 are recommended.

RG214 at VHF attenuation per meter of app. 0,07 dB/m (45m = 3,15db)

VHF AIS frequency app. 162MHz

All outdoor connectors on the coaxial cables should be fitted with preventive isolation, such

as shrink-stocking with silicone to protect the antenna cable against water penetration.

Y1-03-0183-1 Rev. A

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