Sailor VHF DSC RM2042 Operator Manual.pdf

OPERATOR MANUAL

VHF DSC

RM2042

SAILOR COMPACT 2000 PROGRAMME

FOR YOUR INFORMATION

All information and illustrations in this manual are based on the information available

when this manual was printed.

This fifth edition, is printed in May 1998.

We make reservations concerning errors in this manual, and all specifications are

subject to change without further notice.

RM2042

B2042GB

CONTENTS

PAGE

1 INTRODUCTION

1.1 What is Digital Selective Calling?

1-1

1.2 Your S.P. Radio VHF DSC receiver modem

1-1

1.3 About the manual

1-2

2 CONTROLS

2.1 Design philosophy

2-1

2.2 Control keys

2-2

3 OPERATION

3.1 General operation

3-1

3.2 Menu operations

3-1

4 SET-UP

4.1 Change display light and read-out angle

4-1

4.2 Enter/change position information

4-2

4.3 Set-up time

4-3

4.4 View identification numbers

4-4

4.5 View the type of VHF installation

4-5

4.6 Automatic acknowledgment of calls

4-6

4.7 Printer set-up

4-8

4.8 Set-up of alarms

4-9

4.9 Set-up warning time for old position

4-10

4.10 View software version

4-11

5 DISTRESS CALL

5.1 Undesignated distress

5-1

5.2 Complete distress call

5-1

6 DISTRESS RELAY

6.1 Selecting the address

6-1

6.2 Selecting the nature of distress

6-3

6.3 Entering the number of the ship in distress

6-3

6.4 Position information

6-4

6.5 Transmission

6-4

7 STANDARD CALL

7.1 The call menu

7-1

7.2 Selecting an additional message

7-2

7.3 Transmission

7-3

8 EXTENDED CALL

8.1 Individual call

8-1

8.2 Common interest (group) call

8-5

8.3 Geographical area call

8-8

8.4 All ships call

8-11

9 PSTN CALL

9.1 The call menu

9-1

9.2 Selecting an additional message

9-2

9.3 Transmission

9-3

9.4 Coast station is able to comply

9-3

9.5 Coast station is busy

9-4

9.6 Termination of call

9-5

RM2042

10 CALL FROM ADDRESS BOOK

10.1 Selecting an address book call

10-1

10.2 Selecting an additional message

10-2

10.3 Transmission

10-3

11 RECEIVED MESSAGES

11.1 Ordinary messages

11-1

11.2 Distress messages

11-2

12 EDITING OF ADDRESS BOOK

12.1 Selecting an address

12-1

12.2 Editing the address name

12-1

12.3 Entering a call station

12-2

12.4 Entering a phone number

12-3

12.5 Storing the call

12-3

13 EDITING OF STATION REGISTER

13.1 Enter a new station

13-1

13.2 Editing an existing station

13-2

14 THE PRINT MENU

14.1 Print distress messages

14-1

14.2 Print ordinary messages

14-1

14.3 Print the address book

14-1

14.4 Print the station register

14-2

14.5 Print the options/setup

14-2

15 TEST FUNCTION

15.1 Internal test.

15-1

RM2042

1 INTRODUCTION

1.1 What is Digital Selective Calling?

Digital Selective Calling or DSC is the globally adopted

general purpose system for selective calling in ship-to-

ship, ship-to-shore and shore-to-ship directions. The

system is used on both MF/HF and VHF frequencies.

If you want to speak to the other party you can enter the

frequency information in terms of a proposed work

channel number.

Where the coast stations implement automatic services,

DSC gives you direct access to the national telephone

network (dial-trough). This is done by entering a

telephone number in the call.

The Global Maritime Distress and Safety System, or

GMDSS, requires the use of DSC for distress alerting

and safety calls.

The end of sequence signal is used to specify to the

called party if you want an acknowledgment of the call,

if no acknowledgment is wanted or if the call is an

acknowledgment of a received call.

For everyday use, DSC is a reliable and easy way to

establish contact between two maritime mobile parties,

and can be best compared to ordinary telephony.

DSC is based on modern digital communication

techniques and has many advantages and possibilities

compared to the currently known call procedures in

maritime radiocommunication.

The information in the call is transmitted by using

characters composed from a ten-bit error-detecting

code. The characters are transmitted twice in a time-

spread mode which increases the possibility of correct

reception under poor conditions.

One of the system’s advantages is that calls to and from

the ship are automatically received by the other party,

and an audible alarm announces to the operator that a

call has been received. The contact is hereby fast and

reliably established.

1.1.2 Equipment classes

Three equipment classes for DSC equipment are

defined:

Class A: Intended to meet the IMO GMDSS carriage

requirements. Includes all facilities of CCIR Rec. 493-

4, e.g. all call types with all possible combinations of

categories and telecommands and additional

information blocks.

1.1.1 The Digital Selective Calling

system

The DSC system is used for both distress and safety

communication as well as everyday communication.

The system makes it possible to make direct calls from

ship-to-ship, ship-to-coast station and coast station-to-

ship.

Class B: Limited number of calls which provides

alerting, acknowledgments and relay facilities for

distress purposes, calling and acknowledgment for

general communication purposes and calling in

connection with semi-automatic/automatic services.

The calls contain information about the reason for the

call (distress, urgency, safety or ordinary call) and

information about the channel where the subsequent

information is to continue. A typical composition of a

DSC calling sequence is:

Class C: Equipment intended as add-on for VHF

equipment to provide DSC alerting giving ship

identification only.

Signal:

Method of composition:

1.2 Your S.P. Radio VHF DSC receiver

modem

The following gives a short introduction to your S. P.

Radio VHF receiver modem and its features. For a

more technical description please, refer to the technical

manual for this product.

- format specifier selected

- address entered

- category selected

- self-identification pre-programmed

- telecommand information selected

- frequency information entered

- telephone number entered

- end of sequence signal selected

1.2.1 Technical specifications

Your S.P. Radio VHF DSC receiver modem complies

with the international requirements stated by IMO in the

Global Maritime Distress and Safety System, known as

GMDSS.

The format specifier specifies to whom the call is

addressed e.g. if it is an individual or an all ships call.

The address is used in individual calls to specify which

ship is to receive the call.

The VHF DSC receiver modem allows you to encode

and decode all the messages applicable for VHF Class

A Digital Selective Calling equipment as defined in

CCIR Rec. 493-4 and Rec. 689.

The category is used to specify the call priority, e.g. if it

is a safety related or an ordinary call.

The self-identification is your own MID-number which is

stored in the DSC unit.

The method of operation complies with the operational

procedures for use of digital selective calling equipment

as defined in CCIR Rec. 541-3.

The telecommand information is used to specify e.g.

the type of following communication i.e. simplex or

duplex.

RM2042 - INTRODUCTION

1-1

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: