Sailor hc4500 инструкция на русском

Related Manuals for Sailor HC4500

Министерство
образования и науки Украины

Киевская
государственная академия водного
транспорта

Кафедра
технических средств судовождения и
радиосвязи

Методические
указания

для
студентов
факультета «Судовождение
и энергетика судов»

по направлению
«ГМССБ»

дневной
и заочной форм обучения

Киев

2010

УДК
621.396.932

Изучение радиостанции
ПВ-КВ ЦИВ HC4500на тренажереTGS 4100.
Методические указания для студентов
направления «Судовождение и энергетика
судов», дневной и заочной форм обучения.
Н.К.Пустовой, Воробей В.И.

Киев:
КГАВТ, 2010.— 19с.

Цель указаний:оказать помощь студентам, изучающим
радиооборудование ГМССБ и процедуры
радиосвязи на тренажереTGS-4100,
в формировании умений и профессиональных
навыков.

Методические
указания предназначены для для студентов
дневной и заочной форм обучения следующих
направления «Судовождение и энергетика
судов».

Указания рассмотрены
и одобрены:

на заседании
кафедры судовождения и безопасности
судоходства, протокол № от 2010 г.;

Допущены
учебно-методическим центром КГАВТ в
качестве методических указаний.

Рецензент: Иванов
Сергей Викторович- канд. тех. наук, доцент
кафедры ТССиРС

Сведения
об авторах:

Пустовой
Николай Каленьевич – ст. преподаватель,
председатель ГКК ГМССБ.

Воробей
Валерий Иванович- канд. тех. наук, доцент.

Содержание

1.
Основные технические данные 4

2.
Органы управления и индикации 5

3.
Управление и индикация в режиме телефонии
на частотах бедствия, срочности,
безопасности 5

4.
Управление и индикация в режиме
телефонии 7

с
выбором каналов 7

5.
Управление и индикация в общем режиме 8

с
установкой частот 8

6.
Составление программы и Сканирование 9

телефонных
каналов 9

7.
Внутренние функции и настройки 10

8.
Внутреннее тестирование радиоустановки 14

9.
тестирование ЦИВ через береговую
радиостанцию 15

10.
ВАХТа в цив 16

11.
Индивидуальные вызовы «судно — судно» 17

12.
Индивидуальные вызовы «судно — берег» 17

13.
Вызовы безопасности и срочности 19

по
географическому району 19

14.
Вызовы безопасности и срочности 21

всем
станциям 21

15.
Процедуры с использованием ЦИВ при
бедствии 22

Библиографический
список 24

1. Основные технические данные

1.1. Состав
радиоустановки:

— модуль управления;

— блок
приемо-передатчика, содержащий:

1. передатчик,
   обеспечивающий все виды работы: цифровой
   избирательный вызов (ЦИВ), телефонию,
   телекс;

2. сканирующий
   приемник, работающий только в режиме
   ЦИВ на 6 частотах бедствия, срочности,
   безопасности;

3. универсальный
   приемник, обеспечивающий либо сканирование
   до 6 частот ЦИВ для обычных вызовов,
   либо телефонию, либо телексную работу;

— блок настройки
антенны, обеспечивающий автоматическую
подстройку антенны при изменении рабочей
частоты;

— блок питания,
необходимый для преобразования низкого
напряжения в высокое при питании от
аккумуляторных батарей.

1.2. Мощность
передатчика — 250 Вт; обеспечиваются три
уровня установки: максимальный, средний
и минимальный.

1.3. Реализуются
следующие способы настройки рабочих
частот для режимов телефонии и телекса:

1. прямая,
   раздельная установка частот приема и
   передачи;

2. установка
   частот через выбор стандартных номеров
   каналов ITU[2] — три или
   четыре цифры, последние две из которых
   являются номером канала, одна или две
   первые — обозначение поддиапазона,
   например 401, 1201 и т.д.;

3. установка
   частот через выбор условных,
   пользовательских номеров каналов,
   присвоенных самим оператором наборам
   частот приемника и передатчика и
   занесенных предварительно в память
   радиоустановки. При этом можно
   использовать любые цифры, кроме нуля,
   который зарезервирован для телефонной
   частоты бедствия 2182 кГц, и стандартных
   номеров;

4. дистанционное
   управление частотами со стороны
   телексного терминала в режиме «телекс».

1.4. Перед передачей
любого вызова ЦИВ, кроме короткого
вызова бедствия, необходимо выбрать
частоту передачи из списка, помещенного
в память радиоустановки, т.е. прямая
настройка частот передачи для режима
ЦИВ не предусмотрена.

1.5. Сканирование
(последовательное переключение) рабочих
частот обеспечивается:

— в телефонии —
по одной программе и только для тех пар
частот, которым присвоены номера каналов
(телефонную частоту бедствия диапазона
промежуточных волн (ПВ) 2182 кГц можно
ввести в программу под номером 0, частоты
бедствия коротковолнового диапазона
(КВ) — только после их ввода в память
как пользовательских каналов);

— в телексном
режиме — по программе, составленной
оператором, с помощью телексного
терминала.

1.6. Имеется память
принятых вызовов ЦИВ (энергонезависимая,
т.е. информация не теряется при выключении),
позволяющая фиксировать:

— до 20 вызовов
категории «Alarm»
(бедствия и срочности);

— до 20 вызовов
обычных и безопасности.

1.7. Предусмотрен
формат тестового вызова ЦИВ береговой
радиостанции, имеющий категорию «SAFETY»
и не предполагающий последующей связи.

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Управление радиостанцией

Общий вид и назначение органов управления

ПВ/КВ радиостанция НС4500 включает в себя одиополосный (SSB) радиотелефон и контроллер ЦИВ.

Общий вид радиостанции НС4500 с обозначением органов управления показан па рис. 16.1.

Рис. 16.1. ПВ/КВ радиостанция с ЦИВ

1 — Дисплей, 2 — Индикаторы состояний: Тх — передача, CALL — индикация приема вызова, ALARM индикация приема вызова бедствия,
3 — Панель управления, 4 — Установка частоты бедствия 2182 кГц, 5 — Функциональная клавиша для выбора функций, выделенных желтым цветом,
6 — Кнопка подачи вызова бедствия, 7 — Подстройка частоты, 8 — Включение/выключение, 9 — Регулировка громкости,
10 — Программные клавиши (soft keys), 11 — Переключение режимов телефония/ЦИВ, 12 — Адресная книга,
13 — Формирование ЦИВ, 14 — Вызов электронного журнала принятых ЦИВ

Основные функции

ПВ/КВ радиостанция с ЦИВ НС4500 объединяет в себе однонолосную радиотелефонную радиостанцию и контроллер ЦИВ, заменяя три блока аппаратуры семейства Sailor2000: RE2100, RM2150, RM2151. Радиостанция имеет увеличенный дисплей, более дружественный интерфейс для управления, освоение которого, однако, требует определенных навыков.

На дисплее высвечивается необходимая информация в виде подсказок и вариантов выбора. Оператор должен выбрать тот или иной вариант с помощью программных клавиш 10 справа от дисплея. Их функциональное назначение постоянно меняется и индицируется надписями в правой части дисплея, (аналогичный принцип реализован в банкоматах).

Переключение основных режимов работы радиотелефон/ЦИВ осуществляется клавишей 11 TEL/DSC.

Основные функции по управлению радиостанцией показаны на рисунке.

Назначение клавиш радиостанции НС4500

Управление в режиме радиотелефона

Переход в радиотелефонный режим осуществляется клавишей 2182 DIST FREQ или TEL/DSC. В показанном на рисунке примере на дисплее высвечивается номер канала, класс излучения (SSB Telephony — J3E), уровень выходной мощности (MED — средняя), шумоподавитель отключен, уровень входного сигнала — 3 деления, громкоговоритель подключен.

Программными клавишами возможны следующие варианты выбора:

FREQ — показ частот передачи и приема для устаповленного канала,

STATION — выбор береговой станции из памяти,

СН∧, CHv — выбор последующего, предыдущего канала выбранной береговой станции

Для установки номера канала можно также использовать клавиши панели управления.

При выборе подменю FREQ верхней программной клавишей на дисплее будут представлены частоты при- ема и передачи данного канала: Rx — частота приемника, Тх — частота передатчика.

Стрелка рядом с изображением Rx указывает на то, что значение приемной частоты может быть изменено с панели управления. Для ввода новой частоты передатчика следует программной клавишей ТХ переместить указатель вниз и ввести значение частоты с панели управления.

СН — переход к предыдущему меню в форме номера капала,

ТХ — выбор частоты передачи,

MODE — выбор класса излучения,

TUNE, CLRF, RF-G — настройка частоты приемника с шагом 100 Гц, точная подстройка частоты с шагом 10 Гц, регулировка усиления по высокой частоте.

Включение частоты бедствия 2182 кГц осуществляется клавишей 4. Переход к другим телефонным частотам бедствия делают стрелками BANDA и BANDv. На рисунке приведен пример выбора частоты 4125 кГц.

Управление в режиме ЦИВ

Переключение в режим ЦИВ осуществляется кнопкой TEL/DSC. На дисплее индицируются поддиапазоны сканируемых частот. Distress Watch — частоты ЦИВ бедствия, Calling Watch — сканируемые коммерческие ча- стоты. В данном примере сканируются частоты бедствия во всех частотных поддиапазонах 2,4,6,8,12 и 16 МГц, а также коммерческие частоты в поддиапазоне 2 МГц и две частоты в поддиапазоне 12 МГц.

В отличие от аппаратуры Sailor2000, в радиостанции НС4500 имеется один сканирующий приемник частот ЦИВ.

В нижней строке дисплея указывается частота бедствия, которая будет выбрана по умолчанию при быстром вызове бедствия (4207,5 кГц).

CHANGE — изменение сканируемых коммерческих частот,

WATCH — включение/выключение сканирования коммерческих частот,

VIEW — просмотр сканируемых частот (бедствия и коммерческих).

DIST FREQ — выбор частоты бедствия, используемой по умолчанию при быстром вызове. Рекомендуется устанавливать эту частоту равной 2187,5 МГц, если судно находится в районе А2 В районах A3, А4 рекомендуется устанавливать универсальную частоту для вызова бедствия в KB диапазоне 8414,5 МГц.

Справа на панели управления расположены кнопки, используемые при работе с ЦИВ RxLOG — вызов электронного журнала принятых вызовов.
Журнал разделен на две части — вызовов с приоритетом бедствия (DISTRESS) и всех остальных (NORMAL)
Содержание вызовов не может быть изменено оператором, вызовы также не удаляются из памяти при выключении питания, а сохраняются в электрически нерепрограммируемой памяти.

TxCALL — формирование вызовов судну, береговой станции или каких-либо других.

ADDR BOOK — адресная книга для вызова часто запрашиваемых судовых и береговых станций В адресную книгу заносятся MMSI станции и ее частоты.
Станция может быть внесена или удалена из адресной книги оператором.

TEL/DSC — переключение между режимами телефонии и ЦИВ В этом случае изменяется только индикация режимов.
Радиостанция НС4500 имеет два независимых приемников — для телефонии и ЦИВ, поэтому включение, например, телефонной частоты не означает, что прекращается сканирование частот бедствия ЦИВ.
Частоты ЦИВ бедствия сканируются постоянно при любых режимах работы и индикации радиостанции.

SAILOR

HC4500

MF/HF CONTROL UNIT

Operating Instructions

Distress Calls, see page ii. List of contents, see page 1.

Quick DISTRESS Call

1. If off or STANDBY: press ON/OFF.

2. Open DISTRESS lid.

3. Press DISTRESS until RELEASE is displayed

3 — 2 — 1 —

RELEASE

Then the undesignated distress call will be sent by default on the distress frequency 2187.5 kHz.

Wait for answer!

(The distress call is autorepeated every 5 minutes on the same distress frequency.)

DISTRESS Acknowledgement

Press the DISTRESS button for

3

seconds to transmit

TYPE : Distress

MSG.

: Undesignated

Pos : N57°01 W009°53

Time : 13:01 UTC CANCEL

Awaiting

Automatic

Repetition

Rx 2182.0 kHz

Tx 2182.0 kHz

SSB TELEPHONY

SIGNAL

| | | | | POWER HIGH SQUELCH ON

CANCEL

MODE

TUNE<

CLRF

RF-G

4. Press VIEW to read the contents of call.

5. Press “2182”.

Distress acknowledgement received

FROM: 002191000

6. Lift handset.

ii

Press

Press PTT and say:

DISTRESS

Rx/Tx 2182.0 kHz

AM TELEPHONY

SIGNAL

| | | | | POWER HIGH

“MAYDAY”

“This is”

— the 9-digit identity and the call sign or other identification of the ship,

— The ship’s position,

— The nature of distress and assistance wanted,

— any other information which might facilitate the rescue.

“OVER.”

Release

Listen for answer!

VIEW

ABORT

Read call contents.

CH

FREQ

MODE

BAND

0140

What is What?

13 12 11 10 9

1

2

3 4 5 6 7 8

1.

Display.

2.

Indicator lamps. Condition when lit:

Tx:

CALL:

Transmitting.

DSC (see button 9) call for you received.

ALARM: Alarm call received.

3.

Keyboard.

4.

Shift key. Press and hold for yellow functions.

5.

DISTRESS button. Protected by shield. To use, lift the shield and press for 3 seconds, guided by the text displayed.

6.

Tuning control.

7.

ON/OFF push button.

8.

Volume control.

9.

TEL/DSC function switch.

In TEL mode radiotelephone parameters are shown and selected.

In DSC mode DSC parameters are shown and selected.

10. Opens the ADDR BOOK in DSC mode.

11. Tx CALL: Press to start creating a DSC call.

12. Opens the Rx log over received calls in DSC mode.

13. Soft keys. The function of each key is described in its respective line at the right edge of the display.

iii

Introduction

Congratulations on your new SAILOR HC4500 MF/HF maritime radio telephone with built-in DSC (Digital Selective Calling) system and radiotelex, fulfilling the highest international standards for marine

MF/HF communication and safety procedures. For an explanation of

DSC, see page 2.

Your SAILOR HC4500 MF/HF is a part of the modular system 4000 which also includes a HF single sideband radiotelephone. It has built-in MF/HF telex if connected to a PC and/or a printer. If connected to a GPS or other maritime navigation system it can automatically include the true UTC time and your position in its DSC distress messages.

SAILOR marine equipment is specially designed for the extremely rugged conditions on bord a ship, based on more than 50 years’ experience with all kinds of boats, from small pleasure crafts, over fishing boats working under all climatic conditions, to the biggest ships.

S.P. Radio A/S is one of Europe’s leading manufacturers of maritime radiocommunication equipment — a position which has been maintained by means of constant and extensive product development.

We have a worldwide network of dealers with general agencies in more than fifty countries. All our dealers are specially trained to service all your SAILOR products.

About this manual

This manual is for the daily user of the system. Additionally, it includes a section on the installation procedures, and — on page ii standard distress procedures. We highly recommend you to read

the manual before you start using the equipment.

Please note

Any responsibility or liability for loss or damage in connection with the use of this product and the accompanying documentation is disclaimed. The information in this manual is furnished for informational use only, is subject to change without notice, may contain errors or inaccuracies, and represents no commitment whatsoever.

This agreement is governed by the laws of Denmark.

Document no.: B4500GB0 E/0404

Abbreviations Used in this

Manual

NBPD

PTT

RF-G

Rx

SSB

TEL

Tx

UTC

VHF

GPS

HF

IMO

IRS

ISS

ITU

MF

MMSI

MOM

MSG

ADDR

AGC

AM

ARQ

CLRF

Address

Automatic Gain Control

Amplitude Modulation

Automatic Repetition reQuest

Clarify

CU Control Unit

DIRTLX Direct Telex

DSC

ETSI

FEC

Digital Selective Calling

European Telecommunications Standards Institute

Forward Error Correction

GA Go Ahead

GMDSS Global Maritime Distress and Safety System

Global Positioning System

High Frequency

International Maritime Organisation

Information Receiving Station

Information Sending Station

International Telecommunication Union

Medium Frequency

Maritime Mobile Ship Identification

Just a moment please

Message

Narrow Band Direct Printing

Push-To-Talk

Receiver Frequency Gain

Receive

Single Side Band

Telephony

Transmit

Co-ordinated Universal Time

Very High Frequency

iv

0404

Contents

Quick DISTRESS Call …………………………………………………. ii

DISTRESS Acknowledgement …………………………………….. ii

What Is What? …………………………………………………………… iii

Introduction ………………………………………………………………. iv

About this Manual …………………………………………………….. iv

Abbreviations ……………………………………………………………. iv

MF/HF Fundamental Info ……………………………………………. 2

Propagation of MF and HF Radio Waves. ………………….. 2

Radiotelephony ………………………………………………………. 2

Radiotelex ……………………………………………………………… 2

DSC ………………………………………………………………………. 2

Basic Functions …………………………………………………………. 3

Switching ON/OFF ………………………………………………….. 3

Setting Backlight Level ……………………………………………. 3

Switching Loudspeaker ON/OFF ………………………………. 3

Volume Control ………………………………………………………. 3

Switching Squelch ON/OFF ……………………………………… 3

Setting Transmitter Power Level ……………………………….. 3

Manual Call Functions ……………………………………………….. 4

Telephony Channel Display Functions: ……………………… 4

Frequency Display Functions: ………………………………….. 4

Tuning …………………………………………………………………… 4

Station Display Functions: ……………………………………….. 5

Distress Telephony Frequencies ………………………………. 5

Distress Frequency Display Functions: ……………………… 5

Two-tone Alarm Signal ……………………………………………….. 6

Two-tone Alarm Display Functions: …………………………… 6

Listening for Calls ……………………………………………………… 6

Making a Manual Call …………………………………………………. 6

DSC Main Buttons ……………………………………………………… 7

Calling Watch …………………………………………………………. 8

DSC Display Operation ………………………………………………. 9

Receiving an Individual DSC Call ……………………………… 9

Receiving DISTRESS Call ……………………………………… 10

Calling a SHIP ……………………………………………………….. 11

Calling a SHORE Station ……………………………………….. 12

Address Book ……………………………………………………….. 13

Using Two Control Units ………………………………………… 14

Priority of Control Unit #1 ………………………………….. 14

Control Unit #2 Taking Over the Control ……………… 14

Status Indication ………………………………………………. 14

Responding to Incoming DSC Calls …………………… 14

Power On/Off By Control Unit #2 ……………………….. 14

Interconnecting ………………………………………………… 14

DSC Scanning Frequencies ………………………………. 14

Advanced DSC Calls ………………………………………………… 15

Changing a Function ……………………………………………… 17

The Function Tree ……………………………………………. 18

GMDSS Radiotelex Terminal …………………………………….. 19

Introduction ………………………………………………………….. 19

Keyboard Indicator Lamps ……………………………………… 20

Keyboard Function Keys ………………………………………… 20

Switching On ………………………………………………………… 21

Channel Selection …………………………………………………. 21

Transmitting a Message …………………………………………. 21

Editing a Message ………………………………………………… 21

Receiving a Message …………………………………………….. 22

Installation and Initial Set-up ………………………………….. 22

Printer …………………………………………………………….. 22

Keyboard ………………………………………………………… 22

Modem Set-up …………………………………………………. 22

Example of FEC Transmission ……………………………….. 23

Example of ARQ Transmission to a Coast Statio ………. 23

1

0404

2

MF/HF Fundamental Info

Propagation of MF and HF Radio

Waves.

MF/HF radiocommunications provide a medium and long range service. The 1.6-4 MHz marine band is intended primarily for coastal operation beyond normal VHF communication range. A reliable range of more than 150 nautical miles can be expected in most areas in the daytime, more in the nighttime. Propagation of the radio waves in this band is mainly by ground waves i.e. the waves from the transmitter aerial follow the earth’s curvature to the receiver aerial. The high frequency range 4 — 30 MHz can provide communication for hundreds or even thousands of nautical miles.

The long range is achieved by sky waves reflected from the ionosphere. Propagation of the radio waves depends on a number of factors such as frequency, time of day, time of year, and solar activity. The channels allocated to the maritime mobile service in the

HF range are divided into a number of bands: 4, 6, 8, 12, 16, 18, 22,

25 MHz to allow a suitable frequency band to be selected for communication dependent on distance and time of day.

DSC

DSC (Digital Selective Calling) is an automatic calling system which allows a specific station to be contacted and made aware that a station wishes to communicate with it. In addition to calls to specific stations the system can also be used to call ‘all ships’ and groups of ships and this is of significance for its use for DSC distress alerting.

DSC is an alerting signal only and the communication which follows the call is made on an appropriate frequency band using radiotelephony or radiotelex. The frequencies for DSC distress and safety calling are 2187.5 kHz, 4207.5 kHz, 6312 kHz, 8414.5 kHz, 12577 kHz, and 16804.5 kHz. Calling frequencies for public correspondence with coast stations are arranged in pairs, both international and national frequencies are assigned. In addition the frequency 2177 kHz may be used for ship-to-ship calling.

Radiotelephony

The mode of emission used for telephony transmissions in the marine bands is SSB (single-sideband, J3E). On the international distress frequency 2182 kHz compatible AM (amplitude modulation,

H3E) may be used in addition for communication with non-GMDSS ships. AM mode is used also when receiving broadcasting. The frequencies for radiotelephone distress and safety traffic in the HF bands are 4125 kHz, 6215 kHz, 8291 kHz, 12290 kHz, and 16420 kHz. Working frequencies for public correspondence with coast stations are arranged in pairs for duplex/semi-duplex operation. For the HF bands these channels are allocated numbers by ITU on an international basis. In addition a number of simplex frequencies are available in each band for ship-to-ship communication.

Radiotelex

Marine telex is also referred to as ‘Narrow Band Direct Printing’

(NBDP). Due to the narrow bandwidth of the transmissions, a longer range may be expected compared to radiotelephony. The frequencies for radiotelex distress and safety traffic are 2174.5 kHz, 4177.5

kHz, 6268 kHz, 8376.5 kHz, 12520 kHz, and 16695 kHz. Working frequencies for public correspondence with coast stations are arranged in pairs. For the HF bands these channels are allocated numbers by ITU on an international basis. In addition a number of simplex frequencies are available in each band for ship-to-ship communication.

Basic Functions

Switching ON/OFF

1.

Press the ON/OFF button.

Setting Backlight Level

1.

Press the Shift key followed by the DIM key.

The backlight is changed from zero to maximum in four steps.

Repeat until the desired setting is reached.

Switching Loudspeaker ON/OFF

1.

Press the Shift key followed by the SPK key.

Setting Transmitter Power Level

1.

Press the Shift key followed by the Power Key.

The output power is set to HIGH, MED or LOW.

Repeat until the desired setting is reached.

Volume Control

1.

Rotate the VOL button to adjust the loudspeaker sound volume.

Switching Squelch ON/OFF

(SSB Telephony mode)

1.

Press the Shift key followed by the Squelch key.

When squelch is ON, the receiver output is muted in speech pauses.

3

Manual Call Functions

Telephony Channel Display Functions:

Name of station if selected.

Channel number.

Soft keys

LYNGBY

CH 4 1 8

SSB TELEPHONY

SIGNAL

| | | | | POWER HIGH SQUELCH ON

FREQ

STATION

CH

Switches to Frequency display for viewing or altering frequencies.

Switches to Station display for selection of another station.

Steps to the next lower channel number of the station.

Steps to the next higher channel number of the station.

Squelch setting

Mode of emission

Output power setting

Receive: Signal strength

Transmit: Output power level

A channel number may also be keyed in directly from the keyboard.

If the channel is not allocated to the station selected, the station name will disappear from the display.

Frequency Display Functions:

Receive frequency

Transmit frequency

> Rx 4357.0 kHz

Tx 4065.0 kHz

SSB TELEPHONY

SIGNAL

| | | | | POWER HIGH SQUELCH ON

CH

TX

MODE

TUNE<

CLRF

RF-G

Soft keys

Switches to Channel display and previous channel number.

Moves the arrow to Tx before keying in a Tx frequency.

Steps between SSB telephony, AM telephony and Telex mode.

Steps between Tune, Clarify and RF-Gain tuning functions.

Squelch setting

Mode of emission

Output power setting

Receive: Signal strength

Transmit: Output power level

Rx frequencies may be keyed in directly from the keyboard

Tuning

(Frequency display only)

1.

Rotate the TUNE button to adjust frequency or RF-gain of the receiver.

Functions indicated by arrow in the Frequency display:

TUNE: Frequency tuning in 1 kHz steps (AM), 100 Hz steps (SSB) or 500Hz (Telex).

CLFR: Frequency tuning in 10 Hz steps.

RF-G: Manual RF-gain tuning, AGC off.

4

Station Display Functions:

Name of station

MMSI number of station

STATION TABLE

NAME

CALL SIGN

MMSI NO

TELEX NO

LYNGBY

OXZ

002191000

37383

SELECT

CANCEL

STN

Telex call code

Soft keys

Selects the station and switches to Channel display for choice of channel number.

Returns to Channel display without selecting the station.

Selects previous station.

Selects next station.

Distress Telephony Frequencies

To switch to Distress Frequency display: Press 2182 Distress Freq key.

Distress Frequency Display Functions:

Receive/transmit frequency.

Soft keys

DISTRESS

Rx/Tx 2182.0 kHz

AM TELEPHONY

SIGNAL

| | | | | POWER HIGH SQUELCH OFF

CH

FREQ

MODE

BAND

Switches to Channel display and previous channel number.

Switches to Frequency display.

Selects between AM and SSB mode of emission on 2182 kHz.

Steps to the distress telephony frequency in the next higher band.

Mode of emission

Output power setting

Receive: Signal strength

Transmit: Output power level

The frequencies for distress and safety telephony traffic are

2182 kHz, 4125 kHz, 6215 kHz, 8291 kHz, 12290 kHz, 16420 kHz

5

6

Two-tone Alarm Signal

To switch to the Two Tone Alarm Signal display: Press the Shift key followed by the Alarm key.

Two-tone Alarm Display Functions:

Soft keys

FREQ

Returns to frequency display.

Press the START button

5 seconds to send alarm

TEST

START

Starts test of the alarm signal generator.

Starts transmission of the two tone alarm signal.

Transmission of the two tone alarm signal will continue for 45 seconds, but may be stopped manually by pressing the STOP key in the frequency display. When the alarm signal ceases press the handset key and transmit your distress message by speaking into the handset microphone with a clear and calm voice.

Note: The two tone alarm signal generator is intended for alerting ships not yet equipped with DSC equipment. It may be used only to announce a distress message and primarily on the frequency 2182 kHz in AM telephony mode.

Listening for Calls

Coast stations transmit traffic lists consisting of call signs/names of the ships for which they have traffic.

The traffic lists are sent at specified times and at intervals of typically two hours. They are broadcasted on the normal working frequencies on the coast station. Ships should, as far as possible, listen to the traffic lists transmitted by relevant coast stations. On hearing their call sign they should establish communication as soon as they can do so.

1.

Select the appropriate station.

2.

Select the channel on which traffic lists are transmitted.

3.

Switch loudspeaker on and adjust volume to an appropriate level.

If on HF, traffic lists are transmitted in more frequency bands simultaneously, search for the channel with the best propagation conditions.

Making a Manual Call

Wait until transmission of the traffic list has finished and the channel is free. Call the coast station on the working frequency on which the traffic list was received or as instructed by the coast station.

1.

Hook off the handset.

2.

Press the PTT key on the handset when speaking.

Say:

1. <Called station’s name (3 times)>

2. ‘This is’ <Your ship’s name (3 times)>

3. ‘Over’

3.

Release the PTT key to listen.

4.

When answered:

Follow the instructions from the coast station. The coast station may ask for further identification, information on position and next port of call, and may suggest another working channel for the traffic to follow. If the coast station is not ready to receive traffic immediately it may ask you to wait for a specific number of minutes.

DSC Main Buttons

To switch between the DSC STATUS and telephony displays: press TEL/DSC.

DSC STATUS

CHANGE

WATCH

Distress Watch: 2 4 6 8 12 16 MHz

Calling Watch: 2 2 1 1 4 — MHz VIEW FREQ

Distress Frequency: 2187.5kHz

DIST. FREQ

DSC STATUS display

Soft keys

Changes calling watch frequencies.

Switches between calling watch On/Off

Views watch frequencies.

Changes distress frequency used default for quick distress calls.

LYNGBY

CH 4 1 8

SSB TELEPHONY

SIGNAL

POWER HIGH SQUELCH ON | | | | |

Telephony Display

FREQ

STATION

CH

The button opens to the screen menu where all DSC calls are stored.

In this menu NORMAL or DISTRESS calls, can be read separately and sorted by time.

The button opens the Address book menu.

An addr book call is a complete DSC call added a name. It is possible to transmit, add or delete calls from here.

The button opens to the DSC transmitter menu. From here it is possible to make very easy calls. (SHORE, SHIP) and more complicated calls including special category and tele commands.

The button switches between the DSC STATUS and telephony displays.

The MF/HF set is equipped with two receivers. One for watch on the distress frequencies and one for watch on the public DSC frequencies (calling watch). The calling watch receiver is identical with the receiver of the radio, and therefore it is possible to switch the calling watch on and off. The calling watch is only active in DSC mode, i e.

calling watch is automatically switched off when switching to the TEL screen. But if calling watch is on and the user hooks on the handset, the control unit will automatically switch to the DSC status menu.

7

8

Calling Watch

To switch to DSC screen: press TEL/DSC.

DSC STATUS

CHANGE

WATCH

Distress Watch: 2 4 6 8 12 16 MHz

Calling Watch: 2 2 1 1 4 — MHz VIEW FREQ

Distress Frequency: 2187.5kHz

DIST. FREQ

DSC STATUS display

Active calling watch frequencies.

Soft keys

Changes calling watch frequencies.

Switches between calling watch On/Off

Views watch frequencies.

Changes distress frequency used default for quick distress calls.

Cursor

STATUS

Calling Watch: 02 02 01 01 04 —

Rx Freq: 02187.5kHz

Specified frequency

EXIT

List of watch frequencies

When wanted frequency is selected, press EXIT to return to DSC screen.

Return to DSC screen

Move cursor

Freq. up

Freq. down

0404

DSC Display Operation

Receiving an Individual DSC Call

When calling watch is on, your MF/HF set is constantly scanning the selected DSC channels for incoming DSC calls.

Lift the handset and press PTT to connect to the caller.

Lift HANDSET to connect

Individual call received

OR

VIEW

ABORT

Press VIEW to read out the call.

FROM: 219000012

Press ABORT to return to TEL screen.

CALL CONTENT

Time 10:55:00 13 Okt 97

TYPE: Individual

FROM: 219000012

CAT.: Routine

ACKN: Request MORE

Press MORE to view the second part of call.

Press CONNECT to transmit and set channel.

Press CHANGE to change the acknowledgement.

Select CONNECT to reply call

COMM: SSB telephony

MSG.: No Info

AD.: Freq. RX 2053.0 TX 2053.0

CONNECT

CHANGE

CANCEL

AGAIN

Select send to transmit

TYPE: Individual

TO : 219000012

COMM: SSB telephony

AD.: Freq. RX 2053.0 TX 2053.0

ACKN: Reply

SEND

CANCEL

> Rx 2053.0 kHz

Tx 2053.0 kHz

SSB TELEPHONY

SIGNAL

| | | | | POWER HIGH SQUELCH OFF

CH

TX

MODE

TUNE<

CLRF

RF-G

Press SEND to transmit the reply.

Take the handset and start talking.

9

Receiving DISTRESS Call

When switches on your MF/HF set is constantly scanning all DSC distress channels for incoming DSC distress calls.

Distress call received

FROM: 21900100

VIEW

ABORT

Press VIEW to read out the call.

Press ABORT to return to TEL screen

CALL CONTENT

Time: 08:55:00 22 Sep 97 .

TYPE: Distress

FROM: 219001000

MSG.: Fire

Received on 2187.5 kHz MORE

Press MORE to view the second part of call.

CALL CONTENT

N: 57°01 E:009°52

Time 09:58 UTC

COMM: SSB Telephony

ACK/REPLY

SET UP

CANCEL

Press ACK/REPLY to send distress acknowledgement or distress relay.

In these menus there is a security that makes it impossible to send an acknowledgement by mistake.

Press SETUP to return to the TEL screen with the appropriate radio distress frequency, in this case 2182 kHz.

AGAIN

Press AGAIN to view the first part of call.

If the ship in distress is within a reachable distance press “2182” and listen to the subsequent information.

DISTRESS

Rx/Tx 2182.0 kHz

AM TELEPHONY SIGNAL

POWER HIGH SQUELCH OFF | | | | |

CH

FREQ

MODE

BAND

10

Calling a SHIP

Press Tx CALL

Select type of call:

SHORE

SHIP

DISTRESS

MORE

Select a SHIP call.

Key in the nine digit MMSI number of the wanted ship.

Key in the ship

MMSI number

ACCEPT

<

MEMORY

TYPE: Individual

TO : 210215456 CANCEL

The current telephony frequency is included in the call, and this frequency is used as working frequency for the following radio communication.

Accept the number.

A sub menu where a pre-programmed ship can be selected.

Select DSC frequency

Rx 2177.0

kHz

Tx 2177.0

kHz

ACCEPT

CANCEL

SEND Select send to transmit

TYPE: Individual

TO : 210215456

COMM: SSB telephony

AD.: Freq. RX 2053.0 TX 2053.0

ACKN: Request CANCEL

Select the frequency on which the call is transmitted.

Select SEND to transmit the call.

You first see the messages “Call in progress” and then “Waiting for acknowledgement”

Wait for answer

If the ship answers, see page 8 Receiving an Individual DSC call.

11

Calling a SHORE Station

Press Tx CALL

Select type of call:

SHORE

SHIP

DISTRESS

MORE

Select a SHORE call.

Key in the nine digit MMSI number of the wanted coast station.

Key in the coast station MMSI number

ACCEPT

<

MEMORY

TYPE: Individual

TO : 002191000 CANCEL

If the SHORE station supports the possibility of including a telephone number, the telephone number can be keyed in followed by ACCEPT.

Key in the phone number

TYPE: Individual

TO : LYNGBY

_

ACCEPT

<

TEST CALL

CANCEL

Select DSC frequency

Rx 8049.0

kHz

Tx 8049.0

kHz

ACCEPT

Select send to transmit

CANCEL

SEND

TYPE: Individual

TO : LYNGBY

AD.: No info

ACKN: Request CANCEL

Note that when calling a coast station, it is always the coast status that selects the working frequency for the following communication.

12

Accept the number.

A sub menu where a preprogrammed station can be selected.

Select ACCEPT to make a call directly to the shore station and talk with a person there if no phone number is keyed in.

Select TEST CALL to make a test call to the coast station.

Select the frequency on which the call is transmitted.

Select SEND to transmit the call.

You first see the messages “Call in progress” and then “Waiting for acknowledgement”

Wait for answer

If the coast station answers see page 8 Receiving an Individual DSC call.

Address Book

This MF/HF set is designed with self explaining menues.

The four soft keys on the right side of the display refer to the display text.

Open the addr book menu.

Lower left side of the display is the data area.

Upper left side of the display is used for text instructions

Use ^, or keyboard to search in addr book

Ms Sunrise

TO : 219222222

MSG : No info

Select ADD to make a new call

ACCEPT

NAME

MORE

Right side shows the function of the soft keys.

Accepts the data.

Go to the next screen on the same subject.

ADD

DELETE

CANCEL

AGAIN

One step back.

Go to the first screen on the same subject.

13

Using Two Control Units

You can connect two control units to the system. However, it can only be controlled by one control unit at a time.

If for instance control unit #2 has sent an individual DSC call, control unit #2 is to receive and respond to the acknowledgement call that may follow.

If a call comes in when both control units are in the DSC Status

Menu, and therefore not active, both control units are to receive and respond to the call.

Priority of Control Unit #1

Control unit #1 has the highest priority, i.e. you can always control the system by means of control unit #1 – even if control unit #2 has initiated a distress call.

Control Unit #2 Taking Over the Control

When control unit #1 is in the DSC Status Menu, control unit #2 can take over the control of the system by leaving the DSC Status Menu.

When control unit #2 returns to the DSC Status Menu, the control is automatically given back to control unit #1.

Status Indication

Control Unit #1:

When control unit #2 controls the system, the display of control unit

#1 shows what activity is taking place. The following read-outs may appear:

•

”

OCC by unit 2 sending Distress alert” means that control unit #2 is transmitting a distress call, or awaiting automatic retransmission.

•

“ OCC by unit 2 sending DSC call” means that control unit #2 is transmitting an ordinary DSC call.

•

“ OCC by unit 2 using DSC functions” means that control unit

#2 is in a DSC menu without transmitting a call.

•

“

OCC by unit 2 using Radio functions” means that control unit #2 is not in a DSC menu.

Control Unit #2:

The display of control unit #2 always shows when the system is busy. When the system is not busy, the display shows the DSC

Status Menu.

If control unit #2 tries to take over the control, but is not allowed to do so, this is indicated by both a sound and the display read-out “ OCC by unit 1”.

Responding to Incoming DSC Calls

When a call comes in, only the active control unit – i.e. the one that controls the system at the moment – is to respond.

Power On/Off By Control Unit #2

Power On

You can turn on the whole system by means of control unit #2. If the display shows the words “ Unit switched off”, and the on/off button is pressed, what happens depends on whether or not control unit #1 is controlling the system at the moment: a) If control unit #1 is controlling the system, this will be indicated by the display of control unit #2.

b) If control unit #1 is not controlling the system, control unit #2 will start up in the DSC Status Menu.

When the whole system is off, it makes no difference which control unit turns it on.

Power Off

You cannot turn off the whole system by means of control unit #2.

When you press the on/off button, only control unit #2 is turned off.

The display will then show the words “ Unit switched off”.

Interconnecting

When you have received a DSC call, including working frequency, it is possible to transfer the system control from control unit #1 to control unit #2. To do so, in the Frequency menu, key: “ Shift” + “INT-

C/InterCom”.

When a DSC call is transferred from control unit #1 to control unit #2, the right working frequencies are maintained.

If the handset of control unit #2 is not lifted within five minutes, the control automatically returns to control unit #1.

DSC Scanning Frequencies

You cannot change the DSC scanning frequencies by means of control unit #2. The scanning frequencies used when in the DSC

Status Menu of control unit #2 are the same as if in the DSC Status

Menu of control unit #1.

If control unit #1 changes the DSC scanning frequencies, that information is passed on to control unit #2. Therefore, if control unit

#2 is given the control, and starts scanning, the same scanning frequencies are used.

14

Advanced DSC Calls

Extended DSC calls make it possible for you to control the call completely within the international rules, including the possibility of sending data or fax from optional equipment connected to your MF/

HF set.

To start an extended call, select EXTENDED as the ‘Type of call’ in the Tx menu below, and then continue in the Extended calls menu on next page.

If you have selected an INDIVIDUAL Ship, GROUP, or Group AREA call, all your options are the same after having selected the address.

Please observe the international rules for the rights to forward

DISTRESS RELAY calls.

Tx menu. Enter correct data instead of examples shown in italics::

Type of call Address

SHORE Shore:

001234567

Shore

→

Phone:

or from

ADDR.BOOK

SHIP

123456789

Options Other data transmitted

No info: Call shore station Routine — SSB telephony — No Info

98765432: Call Phone No.

Test call

(none)

Routine — SSB telephony — <Phone number>

Safety — Test — No info

Routine — SSB telephony — No Info — Work frequency

LAST CALL

DISTRESS

EXTENDED

Repeat the last call made.

UNDESIGNATED

DISABLE

SINKING

LISTING (CAPSIZE)

GROUNDING

COLLISION

FLOODING

FIRE

ABANDONING

PIRACY

MAN OVER BOARD

EPIRB

(See next page)

Position

UTC time for position

… to be entered manually if not obtained from e.g. a GPS.

Telecom 1

SSB telephony

AM telehony

FEC

?

Ackn.

Yes

Yes

Yes

15

EXTENDED Tx call started from “EXTENDED” in the table on the previous page. Enter correct data instead of examples shown in italics:

Type of call Address

INDIVIDUAL

Shore: 001234567

Shore phone:

GROUP

G.AREA

Ship: 123456789

012345678

N:57° d02°

Options Category Telecom 1

No info: Call shore station Routine

98765432: Call Phone No. Routine

Telecom 2

SSB telephony No info

SSB telephony No info

SSB telephony No info

AM telephony MEDICAL

POLLING AIRCRAFT

Add. msg.

Ackn.

Yes

No info

Position

Work.

frequency

W:009° d03°

The data in the example gives the area:

N:55..57°

W:6..9°

No info

FAX

ARQ

FEC

TTY RX

TTY

TAPE

MORSE

SHIP

POSITION

DATA

ROUTINE

URGENCY

DISTRESS

SAFETY

BUSINESS

Unable to comply

No info

ALL SHIPS

DISTRESS RELAY

DISTRESS ACK

Type of address

Address

ALL SHIPS All ships

INDIVIDUAL 001234567

Type of address

Address

ALL SHIPS All ships

Ship in distress

Distressed ship’s MMSI

DISTRESS

SAFETY

URGENCY

Distress relay

UNKNOWN

KNOWN 123456789

Distressed ship’s MMSI

Distress ack

123456789

Same as above

As for

DISTRESS in table Tx

Call

As for

DISTRESS in table Tx

Call

As for

DISTRESS in table Tx

Call

As for

DISTRESS in table Tx

Call

MMSI address rule:

Shore station numbers start with 00, group numbers start with one 0, ship numbers start with a digit 1-9.

V21

V22

V22 BIS

V23

V26

V26 BIS

V26 TER

V28 TER

V32

No reason

Congestion

Busy

Queue

Station Barred

No operator

Temporary engaged

Equipment

not

No channel

No mode

No info

Same as above

Work.

frequency

As for

DISTRESS in table Tx

Call

As for

DISTRESS in table Tx

Call

Yes

No

No

16

Changing a Function

There are a large number of function settings available, selectable from a function tree, see the next page. This chapter only deals with the principles of how to use the function tree.

An example:

Changing the Display Contrast

Press SHIFT and FUNC to enter function menu.

Select function or group of settings

Select type of general user functions

^

Use ^, to change value

Contrast:

6

USER

TELEPHONY

DSC

MORE

DISPLAY

SOUND

VERSION

MORE

ACCEPT

CANCEL

Select the USER functions.

Select DISPLAY.

Use ^ and v to change the contrast value.

17

The Function Tree

Menu

User

Menu

Telephony

Submenu Level 1

Display

Sound

Version

Print DSC

Config

Submenu Level 1

CH

Menu

DSC

Menu

Station

Protection

Test

Submenu Level 1

MMSI

ACKN

DSC Freq

Position

Time

Test

Language

Submenu Level 1

Add

Delete

View / Edit

Submenu Level 2

Contrast

Earpiece level

Alarm level

Submenu Level 2

Add

Delete

View

Submenu Level 2

Add

Delete

View

Change

Change

Submenu Level 2

Shore

Ship

Parameters

0 to 7. High Contrast = 7

Attenuation Level 0 — 15

Attenuation Level 0 — 15.

SW versions for all modules

Printer On/Off

HW configuration

Parameters

Add new user ch

Delete user ch

View ch

Read Transceiver protection codes

Self test TU module

Parameters

The MMSI number of the unit

Auto ackn on request On/Off

Add new DSC call/receive freq

Delete DSC call/receive freq

View DSC call/receive freq

Automatic if connected to a GPS

Automatic if connected to a GPS

DSC modem self test

Change language if allowed

Parameters

Add new shore station

Add new ship station

Delete station

View stations or Edit stations

Options: System settings.

For authorized service personnel only.

18

GMDSS Radiotelex Terminal

Introduction

The GMDSS Radiotelex Terminal is an option used for handling transmission/reception of telex messages over radio. The terminal consists of a printer and a keyboard, connected to the transceiver control unit which provides the interface to the DSC/telex modem located in the transceiver unit. The keyboard is equipped with an affixed template for function keys and indicator lamps.

The GMDSS Radiotelex Terminal was designed in accordance with relevant IMO, ITU and ETSI recommendation/specifications and has been approved for shipboard installations to be operating within the Global Maritime Distress and Safety System.

It supports world-wide ship-to-ship, shore-to-ship and ship-to-shore communication by utilizing the radiotelex protocols described in

ITU- Rec. 625 to overcome the deficiencies of the HF medium. In case of two-way communication an ARQ (Automatic Repetition reQuest) algorithm for error correction is thus used, and when sending to more than one station an FEC (Forward Error Correction) algorithm is used.

To facilitate error detection the source text consisting of 5-bit telex characters is coded to a constant weight (3/4 ratio of mark and space bits) 7-bit code. In FEC mode the message is sent in time diversity i.e. each character is sent twice with a time interval by interleaving the original character stream with a delayed version of itself. The receiving station thus has two chances to receive the character correctly. If both are in error a ‘*’ is printed. FEC broadcast calls are used for sending collective messages to several stations simultaneously. A special class of FEC allows selective calling by means of call codes. The message is transmitted in inverted format and only receiving stations with the correct call codes will receive the message.

ARQ operation involves two stations. The information sending station (ISS) sends the information in blocks of 3 characters and listens in the interval between the blocks for an acknowledgement character to be received from the information receiving station

(IRS) indicating whether or not the latter has detected any erroneous character(s) in which case the block will be repeated by the ISS. Both the stations involved in a communication session may initiate an OVER sequence to change the direction of information flow or a BREAK sequence to terminate the connection. The station which initiates the connection becomes the

‘master’ station by transmitting the call signal of another station after going from ‘standby’ to ‘phasing’ state. The called station becomes the ‘slave’. When it recognizes its own call signal it will also leave ‘standby’ and enter ‘phasing’ state by transmitting an appropriate control character. After having verified the other station’s identity both stations will proceed to ‘traffic’ state and start exchanging messages. If the quality of the radio link deteriorates resulting in a large number of block repetitions, both stations will automatically advance to the ‘rephasing’ state, in which the ‘master’ station tries to call the ‘slave’ again, as it did in the ‘phasing’ state, without any of them terminating the connection now under re-establishment. Both 9 digit and 5/4 digit call signals are supported and the corresponding switching between the new protocol (ITU-R M. 625) and the old ITU-

R M. 476 is automatically performed.

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Keyboard Indicator Lamps

‘Standby’ Steady light indicates that the terminal is ready.

Flashing light indicates that the printer is off or out-of-paper or the modem is busy/ inhibited. Telex mode must be selected in the frequency display of the CU.

‘Tx’

‘Called’

Steady light indicates that a radiotelex transmission is in progress.

Flashing indicates phasing, rephasing

(‘Called’ diode flashes as well) or repetitions.

Steady light indicates that a radiotelex call has been detected and reception is in progress.

Flashing indicates rephasing (‘Tx’ diode flashes as well).

Keyboard Function Keys

Select CH (F1): Sets the frequencies of the transceiver in accord with the selection of ITU coast station or ITU intership channel and the entry of ITU channel number.

Call FEC (F2):

Call ARQ (F3):

Edit Mesg (F4):

Send Mesg (F5):

WRU (F6):

DE (F7):

Over (F8):

Initiates an FEC transmission.

Responds to the printer with a choice of broadcast or selective FEC. Selecting selective FEC requires entry of call code, before the transmission begins.

Initiates an ARQ call. Responds by printing

‘ARQ call code?’, expecting the call code of the station to be called to be typed. Upon carriage return (¬ Enter), the ARQ transmission begins.

Edits a message to be transmitted later.

Transmits (prints in Standby) the edited message.

Requests the other station to transmit its answer-back code.

Transmits own answer-back code, see

Modem Set-up also.

Changes the direction of an ARQ connection.

Break (F9):

On/Off (F10):

Terminates a connection.

Responds by printing ‘Breaking connection’.

If pressed during transmission of an edited message this is terminated. Press once more to terminate the connection.

Switches the GMDSS telex On/Off. The

‘Standby’ keyboard indicator lamps gives out steady light when the switch on process is finished. Call codes and abbreviated ID are printed.

2174.5 kHz (Ctrl+F1) Selects the distress frequency 2174.5 kHz.

4177.5 kHz (Ctrl+F2) Selects the distress frequency 4177.5 kHz.

6268 kHz (Ctrl+F3) Selects the distress frequency 6268.0 kHz.

8376.5 kHz (Ctrl+F4) Selects the distress frequency 8376.5 kHz.

12520 kHz (Ctrl+F5) Selects the distress frequency 12520.0 kHz.

16695 kHz (Ctrl+F6) Selects the distress frequency 16695.0 kHz.

Bell (Ctrl+F7) Transmits Bell character.

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Switching On

Press F10 and switch on the printer (The ‘Select’ printer indicator must be on). Select telex mode in the Frequency Display of the control unit. If the modem is used for DSC or is inhibited because the transceiver is used for telephony, the Standby keyboard indicator lamp is flashing to indicate that the terminal is not ready.

The ‘Standby’ keyboard indicator lamp shines steady light when connection to the telex modem is established and the following text appears on the printer (example):

5-digit call code: 12345

MMSI number: 123456789

Abbreviated ID: abcd

Channel Selection

Press F1. The printer responds by printing:

‘ITU Coast station / interShip channel (C/S)?:

After pressing ‘C’ or ‘S’ as desired the channel number is requested and must be typed in. The validity of the channel number is checked.

If the channel number does not exist this is indicated.

If the channel number exists the corresponding frequency pair is printed and the transceiver is set accordingly.

The radiotelex distress and safety frequencies may be selected by simultaneously pressing ‘Ctrl’ and the appropriate function key F1 to

F6.

Transmitting a Message

Before calling, it must be ensured that the transmission will not interfere with transmissions already in progress. Switch the loudspeaker on and listen in on the selected channel.

Press Call FEC or Call ARQ as desired and enter the call code of the station to be called. For transmission to two or more stations the

FEC mode should be used. For communication between two stations the ARQ mode should be used.

Before any message can be sent, wait until the connection has been established, or in the case of FEC until the opening phase sequence has been transmitted. When the system is ready for message transmission a “>” is printed and the Tx keyboard indicator shines steady light.

After a successful ARQ connection has been established, answerback codes may be exchanged by pressing the

WRU and DE keys. A message may now be transmitted by pressing carriage return (¬

Enter) followed by the message to be transmitted, either typed in directly from the keyboard, or recalled from the text memory by pressing the Send Message key. Communication with coast stations must be in accordance with the procedures specified by the particular coast station. Where the appropriate facilities are provided by the coast station, traffic may be exchanged with the land telex network.

Having completed the transmission, an exchange of answer-back codes should take place. The radio connection is terminated by pressing the

Break key.

Editing a Message

A text memory is used for storing a message for later transmission.

The message can be transmitted one or more times. The message is printed out when the Send Message key is pressed.

A message can be entered into the text memory after pressing the

Edit Message key in standby mode. Any previous contents of the text memory are printed out then and may be supplemented, corrected or deleted.

Editing keys:

Edit Mesg(F4)

Backspace

Selects edit-mode and prints the contents of the text memory.

Deletes the last character keyed in if it has not been printed.

Insert

Delete followed by line number, selects a line.

The contents of the line, if any, are printed.

Text may be added or deleted.

Deletes the last word of the line

Deletes message (after confirmation) if pressed after Edit (F4).

Line numbers (10, 20, etc.) are added automatically when typing the message.

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Receiving a Message

Reception is possible whenever the terminal is on, indicated by steady light in the ‘Standby’ keyboard indicator. The radio must be set to telex mode and to the desired working channel.

When a call is detected the ‘Call’ keyboard indicator lamps turns on.

In case of paper-out during reception the connection is terminated.

The process may be repeated if ‘N’ is pressed; the modem set-up mode is left if ‘Y’ is pressed.

The answer back of the modem is generated by combining the 5-digit call code or MMSI number, the abbreviated ID and an ”x” e.g.:

12345 abcd x or

123456789 abcd x

Installation and Initial Set-up

Printer

The terminal uses an OKI Microline 280 parallel interface dot-matrix printer with roll paper stand, please refer to the operation guide delivered with the printer. The printer should be connected to the printer socket at the rear of the control unit by means of the parallel interface cable included with the printer. The printer is equipped with a special firmware which allows the paper to be scrolled up so the current line can be read in printing pauses, and scrolled back down when printing continues. The firmware version can be checked by performing a selftest: Disconnect the parallel interface cable. Press the LF button (line-feed) while switching the printer on. When light comes on in the indicator lamps, release the LF button. The printer version is now printed followed by a test print-out. The version must be: F/W 01.01 S33-67-7145.

Keyboard

The keyboard is a Cherry 1800 PC/AT compatible keyboard. The self-adhesive keyboard template delivered with the equipment must be mounted on the keyboard: Remove the protective paper. Carefully place the template around the function keys and indicator lamps so the latter are fully visible.

Modem Set-up

Modem set-up mode is selected automatically when turning the

GMDSS telex on if no call codes are valid or if the abbreviated ID is not valid. To change a valid set-up, a factory resetting of the modem must be performed.

The 5-digit call code, the MMSI number and the abbreviated ID allocated to the station may then be entered in turn. To leave a setting unchanged just press ‘¬ Enter’. Otherwise key in a new setting and press ‘¬ Enter’. The next item is then printed. After the last item follows:

Accept settings (Y/N) ?

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Example of FEC Transmission

Assuming the GMDSS telex terminal is in Standby and the radio is set up to telex mode and to the desired frequencies following a DSC

Distress alert call, proceed as follows:

Press Call FEC. The printer responds by printing:

Broadcast FEC or Selective FEC (B/S)?

Press the ‘B’ key. The printer responds by printing:

Broadcast FEC call 1997-10-05 12:30:23, Tx 2174.5 kHz

The transmission starts, the ‘Tx’ keyboard indicator starts flashing and the control unit display indicates that the transmitter is delivering

RF output to the aerial. When the phasing sequence (including carriage return, line feed, letter shift) has been transmitted the ‘Tx’ lamp shines steady light and the printer responds by printing:

>

The communication to follow must be in accordance with the procedures specified for distress traffic and contain:

•

the distress signal ‘Mayday’;

•

the words ‘this is’;

•

the 9-digit identity and call sign or other identification of the ship,

•

the ship’s position if not included in the DSC distress alert;

•

the nature of distress;

•

any other information which may facilitate the rescue.

The connection is terminated by pressing the Break key. After a few seconds transmission stops, the Standby keyboard indicator lamp goes on and the terminal is ready to receive.

Example of ARQ Transmission to a

Coast Station

When the GMDSS telex terminal is on, indicated by the ‘Standby’ keyboard indicator lamp, and the radio is set up to the desired working channel (and, if requested by the coast station, free signal can be heard in the speaker), press the

Call ARQ key.

The printer responds by printing:

Enter ARQ call code:

Type in the call code, e.g.: 0832

If ok, press carriage return (<- Enter), (otherwise press Call ARQ again).

The printer responds by printing:

ARQ 0832 call, 1997-10-05 12:45:10,

The transmission starts, the ‘Tx’ keyboard indicator lamp starts flashing and the control unit display indicates that the transmitter is delivering RF output to the aerial. When successful connection has been established the ‘Tx’ keyboard indicator lamp shines steady light and the printer responds by printing:

>

The exchange of answer-backs is initiated by the coast station. The answer-back code of the called station is printed:

0832 AUTOTX DK followed by a go ahead indication and a traffic direction change:

GA+?

If direct connection with a land telex subscriber is wanted, type: dirtlx54321+ where 54321 is the telex number of the subscriber. The coast station responds with:

MOM

Dialling follows automatically, and simultaneously the number selected is sent to the ship:

54321

When the connection is ready, the time, answer-back, “via Lyngby

Radio” and “MSG+?” is sent:

97-10-5 12:46

54321 ZYXW VIA LYNGBY RADIO

MSG+?

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Send own answer-back by pressing the DE key:

123456789 abcd x

The message is now transmitted by pressing carriage return (¬

Enter) followed by the message to be transmitted, either typed in directly from the keyboard, or recalled from the text memory by pressing the MESSAGE key: this message is typed in directly from the keyboard or recalled from the text memory.

Having completed the transmission, the answer-back code of the subscriber is requested by pressing the WRU key: x

54321 ZYXW and own answer-back is sent by pressing the DE key:

123456789 abcd x

To disconnect the land line type: kkkk

The coast station responds with:

Time: 97-10-5 12:48

Ship: 123456789 ABCD X

Subscr: 54321

Duration: 1.3

GA+?

A new land line connection may be made or the radio connection terminated by pressing the Break key. After the end-of-communication procedure the transmission stops and the ‘Tx’ keyboard indicator goes off.

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