SIST EN 301 025-3 V1.5.1:2013

• Abstract:

  The present document covers the minimum requirements for general communication for shipborne fixed installations using a VHF radiotelephone operating in certain frequency bands allocated to the maritime mobile service using 25 kHz or 25 kHz and 12,5 kHz channels with associated equipment for DSC - class D. The present document is intended to cover the provisions of Directive 1999/5/EC [i.1] (R&TTE Directive) article 3.3(e), which states that: "... radio equipment within the scope of the present document shall be so constructed that it supports certain features ensuring access to emergency services". In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of article 3 of the R&TTE Directive [i.1] will apply to equipment within the scope of the present document.

• Status: Published
• Public Enquiry End Date: 31-Jul-2013
• Publication Date: 24-Oct-2013
• ICS: 33.060.99 - Other equipment for radiocommunications
• ICS: 33.100.01 - Electromagnetic compatibility in general
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-Oct-2013
• Due Date: 08-Dec-2013
• Completion Date: 25-Oct-2013
• Directive: 1999/5/EC - Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity
• Mandate: M/357
• Ref Project: ETSI EN 301 025-3 V1.5.1 (2013-09) - Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF radiotelephone equipment for general communications and associated equipment for Class D Digital Selective Calling (DSC); Part 3: Harmonized EN covering the essential requirements of article 3.3(e) of the R&TTE Directive

Overview

SIST EN 301 025-3 V1.5.1:2013 is a harmonized European standard that specifies the essential requirements for VHF radiotelephone equipment for general maritime communications and associated Class D Digital Selective Calling (DSC). Developed by the Slovenski inštitut za standardizacijo (SIST) in cooperation with ETSI, this standard addresses electromagnetic compatibility and radio spectrum matters for shipborne fixed installations. It covers systems operating in specified frequency bands allocated to the maritime mobile service using 25 kHz or 25/12.5 kHz channels, ensuring compliance with article 3.3(e) of the R&TTE Directive (1999/5/EC).

This standard plays a key role in supporting maritime safety by ensuring that all equipment within its scope supports features granting access to emergency services, facilitating effective distress and safety communications at sea.

Key Topics

• Essential Requirements: The standard harmonizes provisions from article 3.3(e) of the R&TTE Directive, mandating that VHF radio equipment must enable access to maritime emergency services.
• Digital Selective Calling (DSC) Class D: Defines requirements for Class D DSC, which offers minimum facilities for sending and receiving distress, urgency, safety, and routine calls on VHF maritime channels.
• Channel Specifications: Applies to VHF equipment capable of operating on 25 kHz or both 25 kHz and 12.5 kHz channels.
• Environmental Performance:
  • Requirements for vibration, temperature (dry heat, damp heat, low temperature), and general operational resilience.
• Electromagnetic Compatibility (EMC): Ensures the equipment operates efficiently without causing or being affected by external electromagnetic disturbances.
• Testing and Compliance: Outlines specific test methods and measurement procedures for EMC, operating performance, audio characteristics, and DSC signaling to verify conformity.

Applications

SIST EN 301 025-3 V1.5.1:2013 is crucial for:

• Maritime Communications: Enabling reliable ship-to-ship and ship-to-shore communication on non-SOLAS vessels, enhancing both everyday operations and emergency response.
• Emergency Services Access: Ensuring that maritime VHF radiotelephones are equipped with features essential for distress alerting and coordination with rescue authorities.
• Manufacturers and Installers: Serving as a reference for testing, certification, and installation of new shipborne VHF communication equipment in line with European regulatory requirements.
• National Authorities and Inspectors: Aiding regulators and inspectors in assessing compliance and safety features of maritime VHF radiotelephones fitted on vessels.
• System Integrators: Facilitating integration of DSC capability and VHF communications within broader shipboard safety and navigation systems.

Related Standards

When implementing SIST EN 301 025-3 V1.5.1:2013, users should consider additional related standards to ensure full compliance and system interoperability:

• SIST EN 301 025-1: Technical characteristics and methods of measurement for VHF radiotelephone and DSC equipment.
• SIST EN 301 025-2: Covers further essential requirements outlined in article 3.2 of the R&TTE Directive.
• EN 300 338-3: Technical characteristics and measurement methods for MF, MF/HF, and VHF DSC equipment, particularly relevant for Class D DSC.
• ETSI EG 201 399: A guide to the production of harmonized standards under the R&TTE Directive.
• Directive 1999/5/EC (R&TTE Directive): The primary EU directive specifying legal requirements for radio and telecommunications equipment.

SIST EN 301 025-3 V1.5.1:2013 is thus a cornerstone standard for ensuring maritime radio equipment meets essential safety, operational, and regulatory requirements, supporting reliable communication and rapid emergency response at sea.

Draft ETSI EN 301 025-3 V1.5.0 (2013-05)

Harmonized European Standard
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
VHF radiotelephone equipment for general communications
and associated equipment for Class "D"
Digital Selective Calling (DSC);
Part 3: Harmonized EN covering the essential requirements
of article 3.3(e) of the R&TTE Directive

2 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)

Reference
REN/ERM-TG26-101-3
Keywords
DSC, maritime, radio, traffic, VHF
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
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ETSI
3 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)
Contents
Intellectual Property Rights . 7
Foreword . 7
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 9
4 Technical requirements specifications . 9
4.1 Environmental profile . 9
4.2 General, operational and technical requirements . 10
4.2.1 General and operational requirements . 10
4.2.1.1 Requirements . 10
4.2.1.2 Conformance . 10
4.2.2 Technical requirements . 10
4.2.2.1 Requirements . 10
4.2.2.2 Conformance . 10
4.3 Environmental requirements . 10
4.3.1 Vibration test . 10
4.3.1.1 Definition . 10
4.3.1.2 Requirement . 10
4.3.1.3 Conformance . 10
4.3.2 Temperature tests . 10
4.3.2.1 Definition . 10
4.3.2.2 Dry heat . 11
4.3.2.2.1 Definition. 11
4.3.2.2.2 Requirement . 11
4.3.2.2.3 Conformance . 11
4.3.2.3 Damp heat . 11
4.3.2.3.1 Definition. 11
4.3.2.3.2 Requirement . 11
4.3.2.3.3 Conformance . 11
4.3.2.4 Low temperature . 11
4.3.2.4.1 Definition. 11
4.3.2.4.2 Requirement . 11
4.3.2.4.3 Conformance . 11
4.4 Conformance requirements . 11
4.4.1 Sensitivity of the modulator, including microphone . 11
4.4.1.1 Definition . 11
4.4.1.2 Limit . 11
4.4.1.3 Conformance . 12
4.4.2 Audio frequency response . 12
4.4.2.1 Definition . 12
4.4.2.2 Limit . 12
4.4.2.3 Conformance . 12
4.4.3 Audio frequency harmonic distortion of the emission . 12
4.4.3.1 Definition . 12
4.4.3.2 Limit . 12
4.4.3.3 Conformance . 12
4.4.4 Residual modulation of the transmitter . 12
4.4.4.1 Definition . 12
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4 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)
4.4.4.2 Limit . 12
4.4.4.3 Conformance . 12
4.4.5 Frequency error (demodulated DSC signal) . 12
4.4.5.1 Definition . 12
4.4.5.2 Limit . 12
4.4.5.3 Conformance . 13
4.4.6 Modulation index for DSC . 13
4.4.6.1 Definition . 13
4.4.6.2 Limit . 13
4.4.6.3 Conformance . 13
4.4.7 Modulation rate for DSC . 13
4.4.7.1 Definition . 13
4.4.7.2 Limit . 13
4.4.7.3 Conformance . 13
4.4.8 Void . 13
4.4.9 Harmonic distortion and rated audio-frequency output power . 13
4.4.9.1 Definition . 13
4.4.9.2 Limit . 13
4.4.9.3 Conformance . 13
4.4.10 Receiver audio frequency response . 13
4.4.10.1 Definition . 13
4.4.10.2 Limit . 14
4.4.10.3 Conformance . 14
4.4.11 Receiver residual noise level . 14
4.4.11.1 Definition . 14
4.4.11.2 Limit . 14
4.4.11.3 Conformance . 14
4.4.12 Squelch operation . 14
4.4.12.1 Definition . 14
4.4.12.2 Limit . 14
4.4.12.3 Conformance . 14
4.4.13 Squelch hysteresis . 14
4.4.13.1 Definition . 14
4.4.13.2 Limit . 14
4.4.13.3 Conformance . 14
4.4.14 Dynamic range . 14
4.4.14.1 Definition . 14
4.4.14.2 Limit . 15
4.4.14.3 Conformance . 15
4.5 DSC Signalling . 15
4.5.1 Display . 15
4.5.2 Watchkeeping receiver . 15
4.5.3 Individual DSC calls . 15
4.5.4 All ships calls . 15
4.5.5 DSC call functionality . 15
4.5.6 DSC message composition . 15
4.5.7 Prioritized wait . 15
4.5.8 Alarms . 15
4.5.9 Standby . 15
4.5.10 Sending distress automated requirements . 15
4.5.11 Display . 15
4.5.12 Distress button sub procedure . 16
4.5.13 Transmission of the alert attempt . 16
4.5.14 Updating position . 16
4.5.15 Handling received DSC messages . 16
4.5.16 Alarms . 16
4.5.17 Determining subsequent communications . 16
4.5.18 Automated tuning . 16
4.5.19 Cancelling the distress alert . 16
4.5.20 Acknowledgements . 16
4.5.21 Termination. 16
4.5.22 Warnings . 16
ETSI
5 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)
4.5.23 Tasks – receiving distress . 16
4.5.24 Display – receiving distress . 17
4.5.25 Handling received DSC messages – receiving distress . 17
4.5.26 Alarms – receiving distress . 17
4.5.27 Determining subsequent communications – receiving distress . 17
4.5.28 Automated tuning – receiving distress . 17
4.5.29 Acknowledgements – receiving distress . 17
4.5.30 Termination – receiving distress . 17
4.5.31 Warnings – receiving distress . 17
4.5.32 Tasks – sending non distress . 17
4.5.33 Display – sending non distress . 17
4.5.34 Handling received DSC messages – sending non distress . 17
4.5.35 Alarms – sending non distress . 17
4.5.36 Automated tuning – sending non distress . 17
4.5.37 Delayed acknowledgements – sending non distress . 18
4.5.38 Termination – sending non distress . 18
4.5.39 Warnings – sending non distress . 18
4.5.40 Tasks – receiving non distress . 18
4.5.41 Display – receiving non distress . 18
4.5.42 Handling received DSC messages – receiving non distress . 18
4.5.43 Alarms – receiving non distress . 18
4.5.44 Automated tuning – receiving non distress . 18
4.5.45 Acknowledgements – receiving non distress . 18
4.5.46 Termination – receiving non distress . 18
4.5.47 Warnings – receiving non distress . 18
4.5.48 Communication automated procedure . 18
4.5.49 Tasks – communication . 18
4.5.50 Display – communication . 19
4.5.51 Handling received DSC messages – communication . 19
4.5.52 Tuning of the receiver and transmitter – communication . 19
4.5.53 Termination – communication . 19
4.5.54 Tasks of handling incoming calls while engaged . 19
4.5.55 Termination of automated procedures . 19
4.5.56 Actions after termination of an automated procedure . 19
4.5.57 Putting automated procedures on hold . 19
4.5.58 Controlling non-terminated automated procedures on hold . 19
5 Testing for compliance with technical requirements . 19
5.1 Test conditions, power supply and ambient temperatures . 19
5.2 Interpretation of the measurement results . 19
5.3 Essential radio test suites . 20
5.3.1 Environmental tests. 20
5.3.1.1 Introduction . 20
5.3.1.2 Procedure . 20
5.3.1.3 Performance check . 20
5.3.1.4 Vibration test . 20
5.3.1.4.1 Definition. 20
5.3.1.4.2 Limit . 20
5.3.1.4.3 Conformance . 20
5.3.1.5 Temperature tests . 21
5.3.1.5.1 Dry heat . 21
5.3.1.5.2 Damp heat . 21
5.3.1.5.3 Low temperature . 21
5.3.2 Conformance tests . 21
5.3.2.1 Sensitivity of the modulator, including microphone . 21
5.3.2.2 Audio frequency response . 21
5.3.2.3 Audio frequency harmonic distortion of the emission . 22
5.3.2.4 Residual modulation of the transmitter . 22
5.3.2.5 Frequency error (demodulated DSC signal) . 22
5.3.2.6 Modulation index for DSC . 22
5.3.2.7 Modulation rate for DSC . 22
5.4 Other test suites - Radio . 22
ETSI
6 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)
5.4.1 General . 22
5.4.2 Harmonic distortion and rated audio-frequency output power . 22
5.4.3 Receiver audio frequency response . 22
5.4.4 Receiver residual noise level . 22
5.4.5 Squelch operation . 22
5.4.6 Squelch hysteresis . 22
5.4.7 Dynamic range . 23
Annex A (normative): HS Requirements and conformance Test specifications Table
(HS-RTT) . 24
History . 28

ETSI
7 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This draft Harmonized European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI standards EN Approval Procedure.
The present document has been produced by ETSI in response to mandate M/357 from the European Commission
issued under Directive 98/34/EC [i.4] as amended by Directive 98/48/EC [i.7].
The title and reference to the present document are intended to be included in the publication in the Official Journal of
the European Union of titles and references of Harmonized Standard under the Directive 1999/5/EC [i.1].
See article 5.1 of Directive 1999/5/EC [i.1] for information on presumption of conformity and Harmonized Standards or
parts thereof the references of which have been published in the Official Journal of the European Union.
The requirements relevant to Directive 1999/5/EC [i.1] are summarised in annex A.
The present document is part 3 of a multi-part deliverable covering the VHF radiotelephone equipment for general
communications and associated equipment for Class "D" Digital Selective Calling (DSC), as identified below:
Part 1: "Technical characteristics and methods of measurement";
Part 2: "Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive";
Part 3: "Harmonized EN covering the essential requirements of article 3.3(e) of the R&TTE Directive".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

Introduction
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the R&TTE Directive [i.1]. The
modular structure is shown in EG 201 399 [i.6].
ETSI
8 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)
1 Scope
The present document covers the minimum requirements for general communication for shipborne fixed installations using
a VHF radiotelephone operating in certain frequency bands allocated to the maritime mobile service using 25 kHz or
25 kHz and 12,5 kHz channels with associated equipment for DSC - class D.
The present document is intended to cover the provisions of Directive 1999/5/EC [i.1] (R&TTE Directive)
article 3.3(e), which states that: ". radio equipment within the scope of the present document shall be so constructed
that it supports certain features ensuring access to emergency services".
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the R&TTE Directive [i.1] will apply to equipment within the scope of the present
document.
NOTE: A list of such ENs is included on the web site http://www.newapproach.org/.
2 References
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
reference document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 301 025-1 (V1.5.2) (05-2013): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); VHF radiotelephone equipment for general communications and associated
equipment for Class "D" Digital Selective Calling (DSC); Part 1: Technical characteristics and
methods of measurement".
[2] ETSI TR 100 028 (all parts) (V1.4.1) (12-2001): "Electromagnetic compatibility and Radio
spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment
characteristics".
[3] ETSI EN 300 338-3 (V1.1.1) (02-2010): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Technical characteristics and methods of measurement for equipment for
generation, transmission and reception of Digital Selective Calling (DSC) in the maritime MF,
MF/HF and/or VHF mobile service; Part 3: Class D DSC".
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications terminal equipment and the mutual recognition of their
conformity (R&TTE Directive).
[i.2] Void.
ETSI
9 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)
[i.3] EC Decision 2004/71/EC of 4 September 2003 on essential requirements relating to marine radio
communication equipment which is intended to be used on non-SOLAS vessels and to participate
in the Global Maritime Distress and Safety System (GMDSS).
[i.4] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a
procedure for the provision of information in the field of technical standards and regulations.
[i.5] Void.
[i.6] ETSI EG 201 399: "Electromagnetic compatibility and Radio spectrum Matters (ERM); A guide to
the production of Harmonized Standards for application under the R&TTE Directive".
[i.7] Directive 98/48/EC of the European Parliament and of the Council of 20 July 1998 amending
Directive 98/34/EC laying down a procedure for the provision of information in the field of
technical standards and regulations.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in the R&TTE Directive [i.1] and the
following apply:
class D: class D equipment is intended to provide minimum facilities for VHF DSC distress, urgency and safety as well as
routine calling and reception, not necessarily in full accordance with IMO GMDSS carriage requirements for VHF
installations
environmental profile: range of environmental conditions under which equipment within the scope of the present
document is required to comply with the provisions of the present document
G2B: phase-modulation with digital information, with a sub-carrier for DSC operation
G3E: phase-modulation (Frequency modulation with a pre-emphasis of 6 dB/octave) for speech
modulation index: ratio between the frequency deviation and the frequency of the modulation signal
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
DSC Digital Selective Calling
IMO International Maritime Organization
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
SINAD SIgnal, Noise And Distortion
SOLAS Safety Of Life And Sea
VHF Very High Frequency
4 Technical requirements specifications
4.1 Environmental profile
Tests defined in the present document shall be carried out at representative points within the boundary limits of the
declared operational environmental profile which, as a minimum, shall be that specified in the test conditions contained
in the present document.
ETSI
10 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)
As technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient variety
of environmental conditions as specified in the present document to give confidence of compliance for the affected
technical requirements. These environmental conditions represent those required by article 2 of EC decision
2004/71/EC [i.3] (which shall also be within the boundary limits of the declared operational environmental profile).
4.2 General, operational and technical requirements
4.2.1 General and operational requirements
4.2.1.1 Requirements
The general and operational requirements are defined in EN 301 025-1 [1], clause 4.
4.2.1.2 Conformance
The manufacturer shall declare that compliance to these requirements is achieved and shall provide relevant
documentation.
4.2.2 Technical requirements
4.2.2.1 Requirements
The technical requirements are defined in EN 301 025-1 [1], clause 5.
4.2.2.2 Conformance
The manufacturer shall declare that compliance to these requirements is achieved and shall provide relevant
documentation.
4.3 Environmental requirements
4.3.1 Vibration test
4.3.1.1 Definition
This test is defined in EN 301 025-1 [1], clause 7.4.1.
4.3.1.2 Requirement
The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3.
There shall be no harmful deterioration of the equipment visible.
4.3.1.3 Conformance
Relevant environment tests as defined in clause 5.3.1.4 shall be carried out.
4.3.2 Temperature tests
4.3.2.1 Definition
This series of tests is defined in EN 301 025-1 [1], clause 7.5.1.
ETSI
11 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)
4.3.2.2 Dry heat
4.3.2.2.1 Definition
This test is defined in EN 301 025-1 [1], clause 7.5.2.1.
4.3.2.2.2 Requirement
The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3.
4.3.2.2.3 Conformance
Relevant environment tests as defined in clause 5.3.1.5.1 shall be carried out.
4.3.2.3 Damp heat
4.3.2.3.1 Definition
This test is defined in EN 301 025-1 [1], clause 7.5.3.1.
4.3.2.3.2 Requirement
The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3.
4.3.2.3.3 Conformance
Relevant environment tests as defined in clause 5.3.1.5.2 shall be carried out.
4.3.2.4 Low temperature
4.3.2.4.1 Definition
This test is defined in EN 301 025-1 [1], clause 7.5.4.1.
4.3.2.4.2 Requirement
The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3.
4.3.2.4.3 Conformance
Relevant environment tests as defined in clause 5.3.1.3 shall be carried out.
4.4 Conformance requirements
4.4.1 Sensitivity of the modulator, including microphone
4.4.1.1 Definition
This test is defined in EN 301 025-1 [1], clause 8.4.1.
4.4.1.2 Limit
The frequency deviation shall be as stated in EN 301 025-1 [1], clause 8.4.3.
ETSI
12 Draft ETSI EN 301 025-3 V1.5.0 (2013-05)
4.4.1.3 Conformance
Conformance tests as defined in clause 5.3.2.1 shall be carried out.
4.4.2 Audio frequency response
4.4.2.1 Definition
This test is defined in EN 301 025-1 [1], clause 8.5.1.
4.4.2.2 Limit
The audio frequency response shall lie within the limits shown in EN 301 025-1 [1], clause 8.5.3, figure 2.
4.4.2.3 Conformance
Conformance tests as defined in clause 5.3.2.2 shall be carried out.
4.4.3 Audio frequency harmonic distortion of the emission
4.4.3.1 Definition
This test is defined in EN 301 025-1 [1], clause 8.6.1.
4.4.3.2 Limit
The harmonic distortion limit shall be as stated in EN 301 025-1 [1], clause 8.6.3.
4.4.3.3 Conformance
Conformance tests as defined in clause 5.3.2.3 shall be carried out.
4.4.4 Residual modulation of the transmitter
4.4.4.
...

Harmonized European Standard
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
VHF radiotelephone equipment for general communications
and associated equipment for Class "D"
Digital Selective Calling (DSC);
Part 3: Harmonized EN covering the essential requirements
of article 3.3(e) of the R&TTE Directive

2 ETSI EN 301 025-3 V1.5.1 (2013-09)

Reference
REN/ERM-TG26-101-3
Keywords
DSC, maritime, radio, traffic, VHF
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
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http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2013.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
3 ETSI EN 301 025-3 V1.5.1 (2013-09)
Contents
Intellectual Property Rights . 7
Foreword . 7
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 9
4 Technical requirements specifications . 9
4.1 Environmental profile . 9
4.2 General, operational and technical requirements . 10
4.2.1 General and operational requirements . 10
4.2.1.1 Requirements . 10
4.2.1.2 Conformance . 10
4.2.2 Technical requirements . 10
4.2.2.1 Requirements . 10
4.2.2.2 Conformance . 10
4.3 Environmental requirements . 10
4.3.1 Vibration test . 10
4.3.1.1 Definition . 10
4.3.1.2 Requirement . 10
4.3.1.3 Conformance . 10
4.3.2 Temperature tests . 10
4.3.2.1 Definition . 10
4.3.2.2 Dry heat . 11
4.3.2.2.1 Definition. 11
4.3.2.2.2 Requirement . 11
4.3.2.2.3 Conformance . 11
4.3.2.3 Damp heat . 11
4.3.2.3.1 Definition. 11
4.3.2.3.2 Requirement . 11
4.3.2.3.3 Conformance . 11
4.3.2.4 Low temperature . 11
4.3.2.4.1 Definition. 11
4.3.2.4.2 Requirement . 11
4.3.2.4.3 Conformance . 11
4.4 Conformance requirements . 11
4.4.1 Sensitivity of the modulator, including microphone . 11
4.4.1.1 Definition . 11
4.4.1.2 Limit . 11
4.4.1.3 Conformance . 12
4.4.2 Audio frequency response . 12
4.4.2.1 Definition . 12
4.4.2.2 Limit . 12
4.4.2.3 Conformance . 12
4.4.3 Audio frequency harmonic distortion of the emission . 12
4.4.3.1 Definition . 12
4.4.3.2 Limit . 12
4.4.3.3 Conformance . 12
4.4.4 Residual modulation of the transmitter . 12
4.4.4.1 Definition . 12
ETSI
4 ETSI EN 301 025-3 V1.5.1 (2013-09)
4.4.4.2 Limit . 12
4.4.4.3 Conformance . 12
4.4.5 Frequency error (demodulated DSC signal) . 12
4.4.5.1 Definition . 12
4.4.5.2 Limit . 12
4.4.5.3 Conformance . 13
4.4.6 Modulation index for DSC . 13
4.4.6.1 Definition . 13
4.4.6.2 Limit . 13
4.4.6.3 Conformance . 13
4.4.7 Modulation rate for DSC . 13
4.4.7.1 Definition . 13
4.4.7.2 Limit . 13
4.4.7.3 Conformance . 13
4.4.8 Void . 13
4.4.9 Harmonic distortion and rated audio-frequency output power . 13
4.4.9.1 Definition . 13
4.4.9.2 Limit . 13
4.4.9.3 Conformance . 13
4.4.10 Receiver audio frequency response . 13
4.4.10.1 Definition . 13
4.4.10.2 Limit . 14
4.4.10.3 Conformance . 14
4.4.11 Receiver residual noise level . 14
4.4.11.1 Definition . 14
4.4.11.2 Limit . 14
4.4.11.3 Conformance . 14
4.4.12 Squelch operation . 14
4.4.12.1 Definition . 14
4.4.12.2 Limit . 14
4.4.12.3 Conformance . 14
4.4.13 Squelch hysteresis . 14
4.4.13.1 Definition . 14
4.4.13.2 Limit . 14
4.4.13.3 Conformance . 14
4.4.14 Dynamic range . 14
4.4.14.1 Definition . 14
4.4.14.2 Limit . 15
4.4.14.3 Conformance . 15
4.5 DSC Signalling . 15
4.5.1 Display . 15
4.5.2 Watchkeeping receiver . 15
4.5.3 Individual DSC calls . 15
4.5.4 All ships calls . 15
4.5.5 DSC call functionality . 15
4.5.6 DSC message composition . 15
4.5.7 Prioritized wait . 15
4.5.8 Alarms . 15
4.5.9 Standby . 15
4.5.10 Sending distress automated requirements . 15
4.5.11 Display . 15
4.5.12 Distress button sub procedure . 16
4.5.13 Transmission of the alert attempt . 16
4.5.14 Updating position . 16
4.5.15 Handling received DSC messages . 16
4.5.16 Alarms . 16
4.5.17 Determining subsequent communications . 16
4.5.18 Automated tuning . 16
4.5.19 Cancelling the distress alert . 16
4.5.20 Acknowledgements . 16
4.5.21 Termination. 16
4.5.22 Warnings . 16
ETSI
5 ETSI EN 301 025-3 V1.5.1 (2013-09)
4.5.23 Tasks – receiving distress . 16
4.5.24 Display – receiving distress . 17
4.5.25 Handling received DSC messages – receiving distress . 17
4.5.26 Alarms – receiving distress . 17
4.5.27 Determining subsequent communications – receiving distress . 17
4.5.28 Automated tuning – receiving distress . 17
4.5.29 Acknowledgements – receiving distress . 17
4.5.30 Termination – receiving distress . 17
4.5.31 Warnings – receiving distress . 17
4.5.32 Tasks – sending non distress . 17
4.5.33 Display – sending non distress . 17
4.5.34 Handling received DSC messages – sending non distress . 17
4.5.35 Alarms – sending non distress . 17
4.5.36 Automated tuning – sending non distress . 17
4.5.37 Delayed acknowledgements – sending non distress . 18
4.5.38 Termination – sending non distress . 18
4.5.39 Warnings – sending non distress . 18
4.5.40 Tasks – receiving non distress . 18
4.5.41 Display – receiving non distress . 18
4.5.42 Handling received DSC messages – receiving non distress . 18
4.5.43 Alarms – receiving non distress . 18
4.5.44 Automated tuning – receiving non distress . 18
4.5.45 Acknowledgements – receiving non distress . 18
4.5.46 Termination – receiving non distress . 18
4.5.47 Warnings – receiving non distress . 18
4.5.48 Communication automated procedure . 18
4.5.49 Tasks – communication . 18
4.5.50 Display – communication . 19
4.5.51 Handling received DSC messages – communication . 19
4.5.52 Tuning of the receiver and transmitter – communication . 19
4.5.53 Termination – communication . 19
4.5.54 Tasks of handling incoming calls while engaged . 19
4.5.55 Termination of automated procedures . 19
4.5.56 Actions after termination of an automated procedure . 19
4.5.57 Putting automated procedures on hold . 19
4.5.58 Controlling non-terminated automated procedures on hold . 19
5 Testing for compliance with technical requirements . 19
5.1 Test conditions, power supply and ambient temperatures . 19
5.2 Interpretation of the measurement results . 19
5.3 Essential radio test suites . 20
5.3.1 Environmental tests. 20
5.3.1.1 Introduction . 20
5.3.1.2 Procedure . 20
5.3.1.3 Performance check . 20
5.3.1.4 Vibration test . 20
5.3.1.4.1 Definition. 20
5.3.1.4.2 Limit . 20
5.3.1.4.3 Conformance . 20
5.3.1.5 Temperature tests . 21
5.3.1.5.1 Dry heat . 21
5.3.1.5.2 Damp heat . 21
5.3.1.5.3 Low temperature . 21
5.3.2 Conformance tests . 21
5.3.2.1 Sensitivity of the modulator, including microphone . 21
5.3.2.2 Audio frequency response . 21
5.3.2.3 Audio frequency harmonic distortion of the emission . 22
5.3.2.4 Residual modulation of the transmitter . 22
5.3.2.5 Frequency error (demodulated DSC signal) . 22
5.3.2.6 Modulation index for DSC . 22
5.3.2.7 Modulation rate for DSC . 22
5.4 Other test suites - Radio . 22
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6 ETSI EN 301 025-3 V1.5.1 (2013-09)
5.4.1 General . 22
5.4.2 Harmonic distortion and rated audio-frequency output power . 22
5.4.3 Receiver audio frequency response . 22
5.4.4 Receiver residual noise level . 22
5.4.5 Squelch operation . 22
5.4.6 Squelch hysteresis . 22
5.4.7 Dynamic range . 23
Annex A (normative): HS Requirements and conformance Test specifications Table
(HS-RTT) . 24
History . 28

ETSI
7 ETSI EN 301 025-3 V1.5.1 (2013-09)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Harmonized European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been produced by ETSI in response to mandate M/357 from the European Commission
issued under Directive 98/34/EC [i.4] as amended by Directive 98/48/EC [i.7].
The title and reference to the present document are intended to be included in the publication in the Official Journal of
the European Union of titles and references of Harmonized Standard under the Directive 1999/5/EC [i.1].
See article 5.1 of Directive 1999/5/EC [i.1] for information on presumption of conformity and Harmonized Standards or
parts thereof the references of which have been published in the Official Journal of the European Union.
The requirements relevant to Directive 1999/5/EC [i.1] are summarised in annex A.
The present document is part 3 of a multi-part deliverable covering the VHF radiotelephone equipment for general
communications and associated equipment for Class "D" Digital Selective Calling (DSC), as identified below:
Part 1: "Technical characteristics and methods of measurement";
Part 2: "Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive";
Part 3: "Harmonized EN covering the essential requirements of article 3.3(e) of the R&TTE Directive".

National transposition dates
Date of adoption of this EN: 23 September 2013
Date of latest announcement of this EN (doa): 31 December 2013
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2014
Date of withdrawal of any conflicting National Standard (dow): 30 June 2015

Introduction
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the R&TTE Directive [i.1]. The
modular structure is shown in EG 201 399 [i.6].
ETSI
8 ETSI EN 301 025-3 V1.5.1 (2013-09)
1 Scope
The present document covers the minimum requirements for general communication for shipborne fixed installations using
a VHF radiotelephone operating in certain frequency bands allocated to the maritime mobile service using 25 kHz or
25 kHz and 12,5 kHz channels with associated equipment for DSC - class D.
The present document is intended to cover the provisions of Directive 1999/5/EC [i.1] (R&TTE Directive)
article 3.3(e), which states that: ". radio equipment within the scope of the present document shall be so constructed
that it supports certain features ensuring access to emergency services".
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the R&TTE Directive [i.1] will apply to equipment within the scope of the present
document.
NOTE: A list of such ENs is included on the web site http://www.newapproach.org/.
2 References
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
reference document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 301 025-1 (V1.5.2) (05-2013): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); VHF radiotelephone equipment for general communications and associated
equipment for Class "D" Digital Selective Calling (DSC); Part 1: Technical characteristics and
methods of measurement".
[2] ETSI TR 100 028 (all parts) (V1.4.1) (12-2001): "Electromagnetic compatibility and Radio
spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment
characteristics".
[3] ETSI EN 300 338-3 (V1.1.1) (02-2010): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Technical characteristics and methods of measurement for equipment for
generation, transmission and reception of Digital Selective Calling (DSC) in the maritime MF,
MF/HF and/or VHF mobile service; Part 3: Class D DSC".
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications terminal equipment and the mutual recognition of their
conformity (R&TTE Directive).
[i.2] Void.
ETSI
9 ETSI EN 301 025-3 V1.5.1 (2013-09)
[i.3] EC Decision 2004/71/EC of 4 September 2003 on essential requirements relating to marine radio
communication equipment which is intended to be used on non-SOLAS vessels and to participate
in the Global Maritime Distress and Safety System (GMDSS).
[i.4] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a
procedure for the provision of information in the field of technical standards and regulations.
[i.5] Void.
[i.6] ETSI EG 201 399: "Electromagnetic compatibility and Radio spectrum Matters (ERM); A guide to
the production of Harmonized Standards for application under the R&TTE Directive".
[i.7] Directive 98/48/EC of the European Parliament and of the Council of 20 July 1998 amending
Directive 98/34/EC laying down a procedure for the provision of information in the field of
technical standards and regulations.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in the R&TTE Directive [i.1] and the
following apply:
class D: class D equipment is intended to provide minimum facilities for VHF DSC distress, urgency and safety as well as
routine calling and reception, not necessarily in full accordance with IMO GMDSS carriage requirements for VHF
installations
environmental profile: range of environmental conditions under which equipment within the scope of the present
document is required to comply with the provisions of the present document
G2B: phase-modulation with digital information, with a sub-carrier for DSC operation
G3E: phase-modulation (Frequency modulation with a pre-emphasis of 6 dB/octave) for speech
modulation index: ratio between the frequency deviation and the frequency of the modulation signal
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
DSC Digital Selective Calling
IMO International Maritime Organization
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
SINAD SIgnal, Noise And Distortion
SOLAS Safety Of Life And Sea
VHF Very High Frequency
4 Technical requirements specifications
4.1 Environmental profile
Tests defined in the present document shall be carried out at representative points within the boundary limits of the
declared operational environmental profile which, as a minimum, shall be that specified in the test conditions contained
in the present document.
ETSI
10 ETSI EN 301 025-3 V1.5.1 (2013-09)
As technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient variety
of environmental conditions as specified in the present document to give confidence of compliance for the affected
technical requirements. These environmental conditions represent those required by article 2 of EC decision
2004/71/EC [i.3] (which shall also be within the boundary limits of the declared operational environmental profile).
4.2 General, operational and technical requirements
4.2.1 General and operational requirements
4.2.1.1 Requirements
The general and operational requirements are defined in EN 301 025-1 [1], clause 4.
4.2.1.2 Conformance
The manufacturer shall declare that compliance to these requirements is achieved and shall provide relevant
documentation.
4.2.2 Technical requirements
4.2.2.1 Requirements
The technical requirements are defined in EN 301 025-1 [1], clause 5.
4.2.2.2 Conformance
The manufacturer shall declare that compliance to these requirements is achieved and shall provide relevant
documentation.
4.3 Environmental requirements
4.3.1 Vibration test
4.3.1.1 Definition
This test is defined in EN 301 025-1 [1], clause 7.4.1.
4.3.1.2 Requirement
The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3.
There shall be no harmful deterioration of the equipment visible.
4.3.1.3 Conformance
Relevant environment tests as defined in clause 5.3.1.4 shall be carried out.
4.3.2 Temperature tests
4.3.2.1 Definition
This series of tests is defined in EN 301 025-1 [1], clause 7.5.1.
ETSI
11 ETSI EN 301 025-3 V1.5.1 (2013-09)
4.3.2.2 Dry heat
4.3.2.2.1 Definition
This test is defined in EN 301 025-1 [1], clause 7.5.2.1.
4.3.2.2.2 Requirement
The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3.
4.3.2.2.3 Conformance
Relevant environment tests as defined in clause 5.3.1.5.1 shall be carried out.
4.3.2.3 Damp heat
4.3.2.3.1 Definition
This test is defined in EN 301 025-1 [1], clause 7.5.3.1.
4.3.2.3.2 Requirement
The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3.
4.3.2.3.3 Conformance
Relevant environment tests as defined in clause 5.3.1.5.2 shall be carried out.
4.3.2.4 Low temperature
4.3.2.4.1 Definition
This test is defined in EN 301 025-1 [1], clause 7.5.4.1.
4.3.2.4.2 Requirement
The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3.
4.3.2.4.3 Conformance
Relevant environment tests as defined in clause 5.3.1.3 shall be carried out.
4.4 Conformance requirements
4.4.1 Sensitivity of the modulator, including microphone
4.4.1.1 Definition
This test is defined in EN 301 025-1 [1], clause 8.4.1.
4.4.1.2 Limit
The frequency deviation shall be as stated in EN 301 025-1 [1], clause 8.4.3.
ETSI
12 ETSI EN 301 025-3 V1.5.1 (2013-09)
4.4.1.3 Conformance
Conformance tests as defined in clause 5.3.2.1 shall be carried out.
4.4.2 Audio frequency response
4.4.2.1 Definition
This test is defined in EN 301 025-1 [1], clause 8.5.1.
4.4.2.2 Limit
The audio frequency response shall lie within the limits shown in EN 301 025-1 [1], clause 8.5.3, figure 2.
4.4.2.3 Conformance
Conformance tests as defined in clause 5.3.2.2 shall be carried out.
4.4.3 Audio frequency harmonic distortion of the emission
4.4.3.1 Definition
This test is defined in EN 301 025-1 [1], clause 8.6.1.
4.4.3.2 Limit
The harmonic distortion limit shall be as stated in EN 301 025-1 [1], clause 8.6.3.
4.4.3.3 Conformance
Conformance tests as defined in clause 5.3.2.3 shall be carried out.
4.4.4 Residual modulation of the transmitter
4.4.4.1 Definition
This test is defined in EN 301 025-1 [1], clause 8.11.1.
4.4.4.2 Limit
The residual modulation shall not exceed the limit stated in EN 301 025-1 [1], clau
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.SULSDGDMRþDElectromagnetic compatibility and Radio spectrum Matters (ERM) - VHF radiotelephone equipment for general communications and associated equipment for Class D Digital Selective Calling (DSC) - Part 3: Harmonized EN covering the essential requirements of article 3.3(e) of the R&TTE Directive33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:EN 301 025-3 Version 1.5.1SIST EN 301 025-3 V1.5.1:2013en01-november-2013SIST EN 301 025-3 V1.5.1:2013SLOVENSKI
STANDARD
Harmonized European Standard SIST EN 301 025-3 V1.5.1:2013

ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 2
Reference REN/ERM-TG26-101-3 Keywords DSC, maritime, radio, traffic, VHF ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: [phone]
Fax: [phone]
Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http://portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2013. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. SIST EN 301 025-3 V1.5.1:2013

ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 3 Contents Intellectual Property Rights . 7 Foreword . 7 Introduction . 7 1 Scope . 8 2 References . 8 2.1 Normative references . 8 2.2 Informative references . 8 3 Definitions and abbreviations . 9 3.1 Definitions . 9 3.2 Abbreviations . 9 4 Technical requirements specifications . 9 4.1 Environmental profile . 9 4.2 General, operational and technical requirements . 10 4.2.1 General and operational requirements . 10 4.2.1.1 Requirements . 10 4.2.1.2 Conformance . 10 4.2.2 Technical requirements . 10 4.2.2.1 Requirements . 10 4.2.2.2 Conformance . 10 4.3 Environmental requirements . 10 4.3.1 Vibration test . 10 4.3.1.1 Definition . 10 4.3.1.2 Requirement . 10 4.3.1.3 Conformance . 10 4.3.2 Temperature tests . 10 4.3.2.1 Definition . 10 4.3.2.2 Dry heat . 11 4.3.2.2.1 Definition. 11 4.3.2.2.2 Requirement . 11 4.3.2.2.3 Conformance . 11 4.3.2.3 Damp heat . 11 4.3.2.3.1 Definition. 11 4.3.2.3.2 Requirement . 11 4.3.2.3.3 Conformance . 11 4.3.2.4 Low temperature . 11 4.3.2.4.1 Definition. 11 4.3.2.4.2 Requirement . 11 4.3.2.4.3 Conformance . 11 4.4 Conformance requirements . 11 4.4.1 Sensitivity of the modulator, including microphone . 11 4.4.1.1 Definition . 11 4.4.1.2 Limit . 11 4.4.1.3 Conformance . 12 4.4.2 Audio frequency response . 12 4.4.2.1 Definition . 12 4.4.2.2 Limit . 12 4.4.2.3 Conformance . 12 4.4.3 Audio frequency harmonic distortion of the emission . 12 4.4.3.1 Definition . 12 4.4.3.2 Limit . 12 4.4.3.3 Conformance . 12 4.4.4 Residual modulation of the transmitter . 12 4.4.4.1 Definition . 12 SIST EN 301 025-3 V1.5.1:2013

ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 4 4.4.4.2 Limit . 12 4.4.4.3 Conformance . 12 4.4.5 Frequency error (demodulated DSC signal) . 12 4.4.5.1 Definition . 12 4.4.5.2 Limit . 12 4.4.5.3 Conformance . 13 4.4.6 Modulation index for DSC . 13 4.4.6.1 Definition . 13 4.4.6.2 Limit . 13 4.4.6.3 Conformance . 13 4.4.7 Modulation rate for DSC . 13 4.4.7.1 Definition . 13 4.4.7.2 Limit . 13 4.4.7.3 Conformance . 13 4.4.8 Void . 13 4.4.9 Harmonic distortion and rated audio-frequency output power . 13 4.4.9.1 Definition . 13 4.4.9.2 Limit . 13 4.4.9.3 Conformance . 13 4.4.10 Receiver audio frequency response . 13 4.4.10.1 Definition . 13 4.4.10.2 Limit . 14 4.4.10.3 Conformance . 14 4.4.11 Receiver residual noise level . 14 4.4.11.1 Definition . 14 4.4.11.2 Limit . 14 4.4.11.3 Conformance . 14 4.4.12 Squelch operation . 14 4.4.12.1 Definition . 14 4.4.12.2 Limit . 14 4.4.12.3 Conformance . 14 4.4.13 Squelch hysteresis . 14 4.4.13.1 Definition . 14 4.4.13.2 Limit . 14 4.4.13.3 Conformance . 14 4.4.14 Dynamic range . 14 4.4.14.1 Definition . 14 4.4.14.2 Limit . 15 4.4.14.3 Conformance . 15 4.5 DSC Signalling . 15 4.5.1 Display . 15 4.5.2 Watchkeeping receiver . 15 4.5.3 Individual DSC calls . 15 4.5.4 All ships calls . 15 4.5.5 DSC call functionality . 15 4.5.6 DSC message composition . 15 4.5.7 Prioritized wait . 15 4.5.8 Alarms . 15 4.5.9 Standby . 15 4.5.10 Sending distress automated requirements . 15 4.5.11 Display . 15 4.5.12 Distress button sub procedure . 16 4.5.13 Transmission of the alert attempt . 16 4.5.14 Updating position . 16 4.5.15 Handling received DSC messages . 16 4.5.16 Alarms . 16 4.5.17 Determining subsequent communications . 16 4.5.18 Automated tuning . 16 4.5.19 Cancelling the distress alert . 16 4.5.20 Acknowledgements . 16 4.5.21 Termination. 16 4.5.22 Warnings . 16 SIST EN 301 025-3 V1.5.1:2013

ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 5 4.5.23 Tasks – receiving distress . 16 4.5.24 Display – receiving distress . 17 4.5.25 Handling received DSC messages – receiving distress . 17 4.5.26 Alarms – receiving distress . 17 4.5.27 Determining subsequent communications – receiving distress . 17 4.5.28 Automated tuning – receiving distress . 17 4.5.29 Acknowledgements – receiving distress . 17 4.5.30 Termination – receiving distress . 17 4.5.31 Warnings – receiving distress . 17 4.5.32 Tasks – sending non distress . 17 4.5.33 Display – sending non distress . 17 4.5.34 Handling received DSC messages – sending non distress . 17 4.5.35 Alarms – sending non distress . 17 4.5.36 Automated tuning – sending non distress . 17 4.5.37 Delayed acknowledgements – sending non distress . 18 4.5.38 Termination – sending non distress . 18 4.5.39 Warnings – sending non distress . 18 4.5.40 Tasks – receiving non distress . 18 4.5.41 Display – receiving non distress . 18 4.5.42 Handling received DSC messages – receiving non distress . 18 4.5.43 Alarms – receiving non distress . 18 4.5.44 Automated tuning – receiving non distress . 18 4.5.45 Acknowledgements – receiving non distress . 18 4.5.46 Termination – receiving non distress . 18 4.5.47 Warnings – receiving non distress . 18 4.5.48 Communication automated procedure . 18 4.5.49 Tasks – communication . 18 4.5.50 Display – communication . 19 4.5.51 Handling received DSC messages – communication . 19 4.5.52 Tuning of the receiver and transmitter – communication . 19 4.5.53 Termination – communication . 19 4.5.54 Tasks of handling incoming calls while engaged . 19 4.5.55 Termination of automated procedures . 19 4.5.56 Actions after termination of an automated procedure . 19 4.5.57 Putting automated procedures on hold . 19 4.5.58 Controlling non-terminated automated procedures on hold . 19 5 Testing for compliance with technical requirements . 19 5.1 Test conditions, power supply and ambient temperatures . 19 5.2 Interpretation of the measurement results . 19 5.3 Essential radio test suites . 20 5.3.1 Environmental tests. 20 5.3.1.1 Introduction . 20 5.3.1.2 Procedure . 20 5.3.1.3 Performance check . 20 5.3.1.4 Vibration test . 20 5.3.1.4.1 Definition. 20 5.3.1.4.2 Limit . 20 5.3.1.4.3 Conformance . 20 5.3.1.5 Temperature tests . 21 5.3.1.5.1 Dry heat . 21 5.3.1.5.2 Damp heat . 21 5.3.1.5.3 Low temperature . 21 5.3.2 Conformance tests . 21 5.3.2.1 Sensitivity of the modulator, including microphone . 21 5.3.2.2 Audio frequency response . 21 5.3.2.3 Audio frequency harmonic distortion of the emission . 22 5.3.2.4 Residual modulation of the transmitter . 22 5.3.2.5 Frequency error (demodulated DSC signal) . 22 5.3.2.6 Modulation index for DSC . 22 5.3.2.7 Modulation rate for DSC . 22 5.4 Other test suites - Radio . 22 SIST EN 301 025-3 V1.5.1:2013

ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 6 5.4.1 General . 22 5.4.2 Harmonic distortion and rated audio-frequency output power . 22 5.4.3 Receiver audio frequency response . 22 5.4.4 Receiver residual noise level . 22 5.4.5 Squelch operation . 22 5.4.6 Squelch hysteresis . 22 5.4.7 Dynamic range . 23 Annex A (normative): HS Requirements and conformance Test specifications Table (HS-RTT) . 24 History . 28
ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 7 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Harmonized European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document has been produced by ETSI in response to mandate M/357 from the European Commission issued under Directive 98/34/EC [i.4] as amended by Directive 98/48/EC [i.7]. The title and reference to the present document are intended to be included in the publication in the Official Journal of the European Union of titles and references of Harmonized Standard under the Directive 1999/5/EC [i.1]. See article 5.1 of Directive 1999/5/EC [i.1] for information on presumption of conformity and Harmonized Standards or parts thereof the references of which have been published in the Official Journal of the European Union. The requirements relevant to Directive 1999/5/EC [i.1] are summarised in annex A. The present document is part 3 of a multi-part deliverable covering the VHF radiotelephone equipment for general communications and associated equipment for Class "D" Digital Selective Calling (DSC), as identified below: Part 1: "Technical characteristics and methods of measurement"; Part 2: "Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive"; Part 3: "Harmonized EN covering the essential requirements of article 3.3(e) of the R&TTE Directive".
National transposition dates Date of adoption of this EN: 23 September 2013 Date of latest announcement of this EN (doa): 31 December 2013 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
30 June 2014 Date of withdrawal of any conflicting National Standard (dow): 30 June 2015
Introduction The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to cover all radio and telecommunications terminal equipment within the scope of the R&TTE Directive [i.1]. The modular structure is shown in EG 201 399 [i.6]. SIST EN 301 025-3 V1.5.1:2013

ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 8 1 Scope The present document covers the minimum requirements for general communication for shipborne fixed installations using a VHF radiotelephone operating in certain frequency bands allocated to the maritime mobile service using 25 kHz or 25 kHz and 12,5 kHz channels with associated equipment for DSC - class D. The present document is intended to cover the provisions of Directive 1999/5/EC [i.1] (R&TTE Directive) article 3.3(e), which states that: ". radio equipment within the scope of the present document shall be so constructed that it supports certain features ensuring access to emergency services". In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of article 3 of the R&TTE Directive [i.1] will apply to equipment within the scope of the present document. NOTE: A list of such ENs is included on the web site http://www.newapproach.org/. 2 References 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 reference document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are necessary for the application of the present document. [1] ETSI EN 301 025-1 (V1.5.2) (05-2013): "Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF radiotelephone equipment for general communications and associated equipment for Class "D" Digital Selective Calling (DSC); Part 1: Technical characteristics and methods of measurement". [2] ETSI TR 100 028 (all parts) (V1.4.1) (12-2001): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics". [3] ETSI EN 300 338-3 (V1.1.1) (02-2010): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Technical characteristics and methods of measurement for equipment for generation, transmission and reception of Digital Selective Calling (DSC) in the maritime MF, MF/HF and/or VHF mobile service; Part 3: Class D DSC". 2.2 Informative references The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. [i.1] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity (R&TTE Directive). [i.2] Void. SIST EN 301 025-3 V1.5.1:2013

ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 9 [i.3] EC Decision 2004/71/EC of 4 September 2003 on essential requirements relating to marine radio communication equipment which is intended to be used on non-SOLAS vessels and to participate in the Global Maritime Distress and Safety System (GMDSS). [i.4] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a procedure for the provision of information in the field of technical standards and regulations. [i.5] Void. [i.6] ETSI EG 201 399: "Electromagnetic compatibility and Radio spectrum Matters (ERM); A guide to the production of Harmonized Standards for application under the R&TTE Directive". [i.7] Directive 98/48/EC of the European Parliament and of the Council of 20 July 1998 amending Directive 98/34/EC laying down a procedure for the provision of information in the field of technical standards and regulations. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in the R&TTE Directive [i.1] and the following apply: class D: class D equipment is intended to provide minimum facilities for VHF DSC distress, urgency and safety as well as routine calling and reception, not necessarily in full accordance with IMO GMDSS carriage requirements for VHF installations environmental profile: range of environmental conditions under which equipment within the scope of the present document is required to comply with the provisions of the present document G2B: phase-modulation with digital information, with a sub-carrier for DSC operation G3E: phase-modulation (Frequency modulation with a pre-emphasis of 6 dB/octave) for speech modulation index: ratio between the frequency deviation and the frequency of the modulation signal 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: DSC Digital Selective Calling IMO International Maritime Organization R&TTE Radio and Telecommunications Terminal Equipment RF Radio Frequency SINAD SIgnal, Noise And Distortion SOLAS Safety Of Life And Sea VHF Very High Frequency 4 Technical requirements specifications 4.1 Environmental profile Tests defined in the present document shall be carried out at representative points within the boundary limits of the declared operational environmental profile which, as a minimum, shall be that specified in the test conditions contained in the present document. SIST EN 301 025-3 V1.5.1:2013

ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 10 As technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient variety of environmental conditions as specified in the present document to give confidence of compliance for the affected technical requirements. These environmental conditions represent those required by article 2 of EC decision 2004/71/EC [i.3] (which shall also be within the boundary limits of the declared operational environmental profile). 4.2 General, operational and technical requirements 4.2.1 General and operational requirements 4.2.1.1 Requirements The general and operational requirements are defined in EN 301 025-1 [1], clause 4. 4.2.1.2 Conformance The manufacturer shall declare that compliance to these requirements is achieved and shall provide relevant documentation. 4.2.2 Technical requirements 4.2.2.1 Requirements The technical requirements are defined in EN 301 025-1 [1], clause 5. 4.2.2.2 Conformance The manufacturer shall declare that compliance to these requirements is achieved and shall provide relevant documentation. 4.3 Environmental requirements 4.3.1 Vibration test 4.3.1.1 Definition This test is defined in EN 301 025-1 [1], clause 7.4.1. 4.3.1.2 Requirement The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3. There shall be no harmful deterioration of the equipment visible. 4.3.1.3 Conformance Relevant environment tests as defined in clause 5.3.1.4 shall be carried out. 4.3.2 Temperature tests 4.3.2.1 Definition This series of tests is defined in EN 301 025-1 [1], clause 7.5.1. SIST EN 301 025-3 V1.5.1:2013

ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 11 4.3.2.2 Dry heat 4.3.2.2.1 Definition This test is defined in EN 301 025-1 [1], clause 7.5.2.1. 4.3.2.2.2 Requirement The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3. 4.3.2.2.3 Conformance Relevant environment tests as defined in clause 5.3.1.5.1 shall be carried out. 4.3.2.3 Damp heat 4.3.2.3.1 Definition This test is defined in EN 301 025-1 [1], clause 7.5.3.1. 4.3.2.3.2 Requirement The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3. 4.3.2.3.3 Conformance Relevant environment tests as defined in clause 5.3.1.5.2 shall be carried out. 4.3.2.4 Low temperature 4.3.2.4.1 Definition This test is defined in EN 301 025-1 [1], clause 7.5.4.1. 4.3.2.4.2 Requirement The equipment shall meet the requirements of the performance check defined in EN 301 025-1 [1], clause 7.3. 4.3.2.4.3 Conformance Relevant environment tests as defined in clause 5.3.1.3 shall be carried out. 4.4 Conformance requirements 4.4.1 Sensitivity of the modulator, including microphone 4.4.1.1 Definition This test is defined in EN 301 025-1 [1], clause 8.4.1. 4.4.1.2 Limit The frequency deviation shall be as stated in EN 301 025-1 [1], clause 8.4.3. SIST EN 301 025-3 V1.5.1:2013

ETSI ETSI EN 301 025-3 V1.5.1 (2013-09) 12 4.4.1.3 Conformance Conformance tests as defined in clause 5.3.2.1 shall be carried out. 4.4.2 Audio frequency response 4.4.2.1 Definition This test is defined in EN 301 025-1 [1], clause 8.5.1. 4.4.2.2 Limit The audio frequency response shall lie within the limits shown in EN 301 025-1 [1], clause 8.5.3, figure 2. 4.4.2.3 Conformance Conformance tests as defined in clause 5.3.2.2 shall be carried out. 4.4.3 Audio frequency harmonic distortion of the emission 4.4.3.1 Definition This test is defined in EN 301 025-1 [1], clause 8.6.1. 4.4.3.2 Limit The harmonic distortion limit shall be as stated in EN 301 025-1 [1], clause 8.6.3. 4.4.3.3 Conformance Conformance tests as defined in clause 5.3.2.3 shall be carried out. 4.4.4 Residual modulation of the transmitter 4.4.4.1 Definition This test is defined in EN 301 025-1 [1], clause 8.11.1. 4.4.4.2 Limit The residual modulation shall not exceed the l
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