SIST EN 300 338-6 V1.2.1:2020

SLOVENSKI STANDARD
oSIST prEN 300 338-6 V1.2.0:2019
01-december-2019
Tehnične karakteristike in merilne metode za naprave, ki generirajo, oddajajo in

sprejemajo digitalni selektivni klic (DSC) v pomorski mobilni storitvi, ki deluje v

Technical characteristics and methods of measurement for equipment for generation,

transmission and reception of Digital Selective Calling (DSC) in the maritime MF, MF/HF

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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Intellectual Property Rights ................................................................................................................................ 4

Foreword ............................................................................................................................................................. 4

Modal verbs terminology .................................................................................................................................... 4

1 Scope ........................................................................................................................................................ 5

2 References ................................................................................................................................................ 5

2.1 Normative references ......................................................................................................................................... 5

2.2 Informative references ........................................................................................................................................ 6

3 Definition of terms, symbols and abbreviations ....................................................................................... 6

3.1 Terms .................................................................................................................................................................. 6

3.2 Symbols .............................................................................................................................................................. 7

3.3 Abbreviations ..................................................................................................................................................... 7

4 General requirements ............................................................................................................................... 7

4.1 General ............................................................................................................................................................... 7

4.2 Frequency of operation ....................................................................................................................................... 7

4.3 Class of emission ................................................................................................................................................ 8

4.4 Controls .............................................................................................................................................................. 8

4.5 Indicators ............................................................................................................................................................ 8

4.5.0 General .......................................................................................................................................................... 8

4.5.1 Audible indicators ......................................................................................................................................... 8

4.5.2 Visual Indicators ........................................................................................................................................... 8

4.6 Labelling............................................................................................................................................................. 8

4.7 Instructions ......................................................................................................................................................... 9

4.8 Self ID ................................................................................................................................................................ 9

4.9 Own vessel MMSI .............................................................................................................................................. 9

4.10 Battery requirement ............................................................................................................................................ 9

5 DSC Operation ....................................................................................................................................... 10

5.1 Listen Before Talk (LBT) Protocol .................................................................................................................. 10

5.1.0 General ........................................................................................................................................................ 10

5.1.1 Active Mode Wait Period Calculation ........................................................................................................ 10

5.1.2 Test Mode Wait Period Calculation ............................................................................................................ 10

5.2 DSC messages .................................................................................................................................................. 10

5.2.1 Active mode ................................................................................................................................................ 10

5.2.1.0 General .................................................................................................................................................. 10

5.2.1.1 Closed loop operation ........................................................................................................................... 11

5.2.1.2 Open loop operation .............................................................................................................................. 11

5.2.1.3 Distress self-cancel................................................................................................................................ 12

5.2.2 Test mode.................................................................................................................................................... 12

5.3 Action on receipt of acknowledgment messages to alerts ................................................................................ 12

6 Internal electronic position fixing device ............................................................................................... 12

Annex A (informative): Change History .............................................................................................. 13

History .............................................................................................................................................................. 14

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The present document is part 6 of a multi-part deliverable. Full details of the entire series can be found in part 1 [i.1].

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The present document states the minimum requirements for devices using Digital Selective Calling (DSC) Class M, for

Man Overboard (MOB). The present document defines the requirements for equipment that uses DSC alerting and

signalling in the maritime mobile bands and particularly the GMDSS distress and safety channels. Such equipment is

The present document is part 6 of a multi-part deliverable that covers the channel access rules and technical

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

Referenced documents which are not found to be publicly available in the expected location might be found at

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The following referenced documents are necessary for the application of the present document.

[1] Recommendation ITU-R M.493-15 (01/2019): "Digital selective-calling system for use in the

[2] ETSI EN 303 098: "Maritime low power personal locating devices employing AIS; Harmonised

[3] Recommendation ITU-R M.585-7: "Assignment and use of identities in the maritime mobile

[4] Recommendation ITU-R M.821-1: "Optional expansion of the digital selective-calling system for

[5] CENELEC EN 61108-1: "Maritime navigation and radiocommunication equipment and systems -

Global navigation satellite systems (GNSS) - Part 1: Global positioning system (GPS) - Receiver

equipment - Performance standards, methods of testing and required test results".

[6] CENELEC EN 61108-2: "Maritime navigation and radiocommunication equipment and systems -

Global navigation satellite systems (GNSS) - Part 2: Global navigation satellite system

(GLONASS) - Receiver equipment - Performance standards, methods of testing and required test

[7] CENELEC EN 61108-3: "Maritime navigation and radiocommunication equipment and systems -

Global navigation satellite systems (GNSS) - Part 3: Galileo receiver equipment - Performance

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

The following referenced documents are not necessary for the application of the present document but they assist the

[i.1] ETSI EN 300 338-1: "Technical characteristics and methods of measurement for equipment for

generation, transmission and reception of Digital Selective Calling (DSC) in the maritime MF,

For the purposes of the present document, the terms given in ETSI EN 300 338-1 [i.1] and the following apply:

acknowledged: automated procedure which indicates that the objective of the initial DSC message has been achieved

activation: initial triggering of the MoB device i.e. both parts of the two step procedure are performed

default: value selected or an action taken by the equipment software in the absence of any operator input

distress alert: name given to the single distress DSC message with the format symbol 112

distress DSC message: DSC message or acknowledgement containing the distress information

distress information: symbols within a DSC message describing a distress situation consisting of the MMSI of the

vessel in distress, the nature of distress, the position of the vessel in distress, the UTC time of that position and the mode

factory default: default value that is set by the manufacturer such that the field or behaviour is defined prior to any

information characters: set of symbols in a DSC message that contains the items of interest for the recipient and is

non distress DSC message: DSC messages or acknowledgements that do not have the format specifier or category of

symbol (as part of the DSC sentence): 7 binary bits of a 10 bit DSC word that have the information content

word (as part of the DSC sentence): 10 binary bits that make up the coded entities of a transmitted DSC message

NOTE: The 10 bits consist of a 7 bit "symbol" that gives the information content and 3 bit error check that gives