SIST EN 301 843-4 V1.2.1:2005

• Abstract:

  This work Item is required to carry a review of Marine EMC, to align as appropriate with the new revsied version of IEC EN 60945. Other Marine Standards containing EMC requirements will be reviewed, and further work items will be generate as necessary.

• Status: Published
• Publication Date: 31-Jan-2005
• ICS: 33.060.20 - Receiving and transmitting equipment
• ICS: 33.100.01 - Electromagnetic compatibility in general
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Feb-2005
• Due Date: 01-Feb-2005
• Completion Date: 01-Feb-2005
• 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
  Conflicting Date: 31-Mar-2006
• Directive:

  ---

  TRRTP124 - Splošni akt o načrtu uporabe radijskih frekvenc (NURF-4)
• Mandate: T-353
• Ref Project: ETSI EN 301 843-4 V1.2.1 (2004-06) - Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for marine radio equipment and services; Part 4: Specific conditions for Narrow-Band Direct-Printing (NBDP) NAVTEX receivers

• Official Journal Project Relation: SIST EN 301 843-4:2001 - Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for marine radio equipment and services; Part 4: Specific conditions for Narrow-Band Direct-Printing (NBDP) NAVTEX receivers
• Effective Date: 25-Jan-2010

Overview

SIST EN 301 843-4 V1.2.1:2005 is a Slovenian national standard that mirrors EN 301 843-4. This standard is focused on electromagnetic compatibility (EMC) for marine radio equipment, specifically establishing requirements for Narrow-Band Direct-Printing (NBDP) NAVTEX receivers used within the maritime mobile service. Published as part of the broader Electromagnetic Compatibility and Radio Spectrum Matters (ERM) series, it addresses the performance and testing criteria to ensure such receivers operate reliably with minimal risk of electromagnetic interference within the maritime environment.

The standard forms part of efforts to align marine EMC requirements with updates to key international standards, notably IEC EN 60945. It is an essential reference for manufacturers, integrators, and regulators working with NAVTEX receivers or maintaining fleet communications compliance.

Key Topics

• Scope of EMC Requirements
  The standard specifies EMC performance and test conditions for NBDP NAVTEX receivers and associated ancillary equipment, ensuring compatibility within the electromagnetic environments onboard ships.

• Test Conditions & Methods
  Clear specifications are provided for:

  • Arrangement of wanted RF input signals during testing
  • Exclusion bands for immunity testing (key frequencies are excluded)
  • Measurement of character error rates (CER) as a criterion for performance

• Performance Assessment
  Requirements on how performance must be checked-before, during, and after tests-using standardized modulation and input signals to confirm function and data integrity.

• Performance Criteria

  • Criteria A: Continuous phenomena (e.g., equipment continuously prints with error rates below threshold)
  • Criteria B: Transient phenomena (procedures if printing stops temporarily under test)
  • Criteria C: Recovery after power supply failures
  • Criteria on memory and data retention

• Emission and Immunity Applicability
  Provides applicability matrices for emissions and immunity (referencing EN 301 843-1) and highlights any special conditions specific to NAVTEX receivers.

• Device Classification
  Confirms that NAVTEX receivers are classified under mobile marine radio equipment.

Applications

SIST EN 301 843-4 V1.2.1:2005 is crucial for stakeholders in the field of maritime communication technology. The practical applications include:

• Regulatory Compliance
  Ensuring that NAVTEX receivers installed on ships meet European Union EMC requirements and are in line with shared technical regulations for marine equipment.

• Quality Assurance
  Manufacturers gain a clear testing methodology for validating that their receivers can withstand maritime electromagnetic environments without data loss or communication disruption.

• Fleet Upgrades & Audits
  Ship owners and systems integrators can use this standard to audit existing equipment, plan upgrades, or specify procurement, ensuring reliability and legal compliance.

• Product Development
  Engineers and product developers rely on the detailed test methods and performance criteria to design future-proof marine receivers.

• Safety at Sea
  By securing reliable navigation and weather message reception (through NAVTEX), the standard contributes to maritime safety, which depends on uninterrupted, accurate communication.

Related Standards

For comprehensive application and compliance, consider these related standards:

• EN 301 843-1:
  Common technical requirements for EMC of marine radio equipment (forms the basis for part 4).

• EN 300 065-2:
  Covers EMC and spectrum matters for narrow-band direct-printing telegraph equipment receiving meteorological or navigational information (NAVTEX).

• EN 60945:
  General EMC requirements for maritime navigation and radio communication equipment.

• EN 300 065-3:
  Harmonized specification for NAVTEX receivers under additional regulatory directives.

• Directive 1999/5/EC (R&TTE Directive):
  European framework directive for radio equipment and telecommunications terminal equipment.

• Council Directive 89/336/EEC (EMC Directive):
  EU directive on electromagnetic compatibility.

Practical Value

Adherence to SIST EN 301 843-4 V1.2.1:2005 ensures that NAVTEX receivers on ships maintain essential communication functionality even in challenging EMC conditions, thereby supporting ship safety, regulatory compliance, and reliable maritime operations. This standard is a key resource for the maritime electronics sector, safeguarding communication infrastructure in accordance with evolving international best practices.

SLOVENSKI STANDARD
01-februar-2005
Elektromagnetna združljivost (EMC) in zadeve v zvezi z radijskim spektrom (ERM) -
Standard elektromagnetne združljivosti (EMC) za pomorsko radijsko opemo in
storitve - 4. del: Posebni pogoji za sprejemnike ozkopasovne telegrafije z
neposrednim tiskanjem (NBDP) NAVTEX
Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic
Compatibility (EMC) standard for marine radio equipment and services; Part 4: Specific
conditions for Narrow-Band Direct-Printing (NBDP) NAVTEX receivers
Ta slovenski standard je istoveten z: EN 301 843-4 Version 1.2.1
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Candidate Harmonized European Standard (Telecommunications series)

Electromagnetic compatibility
and Radio spectrum Matters (ERM);
ElectroMagnetic Compatibility (EMC)
standard for marine radio equipment and services;
Part 4: Specific conditions for Narrow-Band
Direct-Printing (NBDP) NAVTEX receivers

2 ETSI EN 301 843-4 V1.2.1 (2004-06)

Reference
REN/ERM-EMC-234-4
Keywords
EMC, maritime, NAVTEX, radio, receiver,
regulation
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, send your comment to:
[e-mail]
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 2004.
All rights reserved.
TM TM TM
DECT , PLUGTESTS and UMTS are Trade Marks of ETSI registered for the benefit of its Members.
TM
TIPHON and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI
3 ETSI EN 301 843-4 V1.2.1 (2004-06)
Contents
Intellectual Property Rights.4
Foreword.4
1 Scope.5
2 References.5
3 Definitions, symbols and abbreviations .6
3.1 Definitions.6
3.2 Symbols.6
3.3 Abbreviations.6
4 Test conditions.6
4.1 General.6
4.2 Arrangements for test signals .6
4.2.1 Arrangements for test signals at the input of the receiver.6
4.2.2 Arrangements for test signals at the output of the receiver.7
4.3 Exclusion bands.7
4.3.1 Exclusion bands for receivers .7
4.4 Narrow band responses on receivers .7
4.5 Normal test modulation.7
5 Performance assessment.7
5.1 General.7
5.2 Equipment which can provide a continuous communication link .8
5.3 Ancillary equipment.8
5.4 Equipment classification.8
6 Performance criteria.8
6.1 Performance criteria A for continuous phenomena applied to receivers.8
6.2 Performance criteria B for transient phenomena applied to receivers.8
6.3 Performance criteria C applied to power supply failure .9
6.4 Performance check.9
6.4.1 Receiver.9
6.5 Performance criteria for equipment which does not provide a continuous communication link.9
7 Applicability overview.9
7.1 Emission.9
7.1.1 General.9
7.1.2 Special conditions.9
7.2 Immunity.9
7.2.1 General.9
7.2.2 Special conditions.10
Annex A (informative): Examples of types of Narrow-Band Direct-Printing (NBDP) NAVTEX
equipment in the scope of the present document .11
A.1 Narrow-Band Direct-Printing (NBDP) NAVTEX receivers operating in the maritime mobile
service.11
Annex B (informative): The EN title in the official languages .12
History .13

ETSI
4 ETSI EN 301 843-4 V1.2.1 (2004-06)
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://webapp.etsi.org/IPR/home.asp).
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 Candidate Harmonized European Standard (Telecommunications series) 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 a mandate from the European Commission issued
under the Council Directive 98/34/EC [6] (as amended) laying down a procedure for the provision of information in the
field of technical standards and regulation.
The present document, together with EN 301 843-1 [1], is intended to become a Harmonized Standard, the reference of
which will be published in the Official Journal of the European Communities referencing the Council Directive on the
approximation of the laws of the Member States relating to electromagnetic compatibility ("the EMC Directive")
(89/336/EEC [3] as amended), and 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
(the "R&TTE Directive" [2]).
The present document is part 4 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].

National transposition dates
Date of adoption of this EN: 4 June 2004
Date of latest announcement of this EN (doa): 30 September 2004
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 2005
Date of withdrawal of any conflicting National Standard (dow): 31 March 2006

ETSI
5 ETSI EN 301 843-4 V1.2.1 (2004-06)
1 Scope
The present document together with EN 301 843-1 [1] covers the assessment of Narrow-Band Direct-Printing (NBDP)
NAVTEX receivers operating in the maritime mobile service, and ancillary equipment in respect of ElectroMagnetic
Compatibility (EMC).
Technical specifications related to the antenna port and emissions from the enclosure port of NAVTEX receivers are not
included in the present document. Such technical specifications are found in the related product standard
EN 300 065-2 [4] for the effective use of the radio spectrum.
The present document specifies the applicable test conditions, performance assessment and performance criteria for
NAVTEX receivers operating in the maritime mobile service and the associated ancillary equipment.
In case of differences (for instance concerning special conditions, definitions, abbreviations) between the present
document and EN 301 843-1 [1], the provisions of the present document take precedence.
The electromagnetic environment used in the present document to develop the technical specifications encompasses the
electromagnetic environment onboard ships as identified in EN 60945 [5].
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
[1] ETSI EN 301 843-1 (V1.2.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
ElectroMagnetic Compatibility (EMC) standard for marine radio equipment and services;
Part 1: Common technical requirements".
[2] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications equipment and the mutual recognition of their conformity
(R&TTE Directive).
[3] Council Directive 89/336/EEC o
...