SIST EN 301 025:2000
(Main)ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and methods of measurement for VHF radiotelephone equipment for general communications and associated equipment for Class D Digital Selective Calling (DSC)
General Information
- Abstract
EN for equipment to be used in the maritime services and not forming part of the Global Maritime Distress and Safety System (GMDSS).
- Status
- Published
- Publication Date
- 30-Nov-2000
- Technical Committee
- RES - Radio equipment and systems
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Dec-2000
- Due Date
- 01-Dec-2000
- Completion Date
- 01-Dec-2000
Overview
SIST EN 301 025:2000 is a key European standard developed by the Slovenski inštitut za standardizacijo (SIST). Titled "ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and methods of measurement for VHF radiotelephone equipment for general communications and associated equipment for Class D Digital Selective Calling (DSC)", this standard specifies the requirements and test methods for Very High Frequency (VHF) radiotelephone systems used in maritime applications, particularly for equipment outside the Global Maritime Distress and Safety System (GMDSS).
The document outlines electromagnetic compatibility (EMC) and radio spectrum requirements, ensuring reliable communications and minimizing interference within maritime environments. It applies to all VHF radiotelephone equipment and associated Class D DSC systems intended for general maritime communication and safety, promoting interoperability and operational effectiveness.
Key Topics
The standard covers several essential areas related to VHF maritime radio communications and Class D DSC:
- Technical Characteristics: Defines the necessary composition, construction, and operational requirements for compliant VHF radiotelephones and DSC equipment.
- Electromagnetic Compatibility (EMC): Establishes guidelines to control radio frequency interference, ensuring the equipment neither causes nor is susceptible to unwanted emissions.
- Radio Spectrum Management: Sets limits for frequency error, spurious emissions, adjacent channel power, and modulation characteristics to promote efficient use of the maritime spectrum.
- Methods of Measurement: Details test conditions, signal arrangements, and environmental testing (including temperature and vibration) to verify equipment performance.
- Safety and Labelling: Requires clear safety provisions, proper marking, user controls, and indicators to support safe and efficient operation onboard.
- Digital Selective Calling (DSC) Functions: Specifies requirements for the coding/decoding of DSC signals, management of distress and all-ships calls, and alarm functionalities.
Applications
SIST EN 301 025:2000 is widely applicable to the maritime sector for:
- General Maritime Communication: Supports VHF radiotelephone communications between ships, and between ship and shore, outside of dedicated GMDSS installations.
- Class D DSC Systems: Ensures standardized operation of Class D Digital Selective Calling, providing automated alerting capabilities for distress and routine traffic.
- Non-GMDSS Vessels: Focuses on vessels not mandated to carry GMDSS equipment, including leisure craft, fishing boats, and smaller commercial ships, improving safety and facilitating coordination at sea.
- Compliance and Certification: Enables manufacturers and operators to demonstrate conformity with European and international EMC and radio performance criteria, which is critical for market acceptance and regulatory approval.
Related Standards
SIST EN 301 025:2000 is aligned with several related standards and regulations in the maritime communications sector:
- EN 301 025 (ETSI): The original European Standard which SIST EN 301 025 adopts.
- EN 60945: Maritime navigation and radio communication equipment and systems - General requirements.
- EN 300 338: Maritime VHF radio equipment operating in the frequency range 156 MHz to 174 MHz.
- ITU-R Recommendations: Especially those governing maritime radio services and VHF frequency allocations.
- IEC Standards: Pertaining to marine communications, environmental testing, and EMC.
By adhering to SIST EN 301 025:2000, maritime stakeholders enhance communication reliability, minimize electromagnetic interference, and ensure robust safety procedures for non-GMDSS vessels, supporting safer, more efficient maritime operations.
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Frequently Asked Questions
SIST EN 301 025:2000 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and methods of measurement for VHF radiotelephone equipment for general communications and associated equipment for Class D Digital Selective Calling (DSC)". This standard covers: EN for equipment to be used in the maritime services and not forming part of the Global Maritime Distress and Safety System (GMDSS).
EN for equipment to be used in the maritime services and not forming part of the Global Maritime Distress and Safety System (GMDSS).
SIST EN 301 025:2000 is classified under the following ICS (International Classification for Standards) categories: 33.060.99 - Other equipment for radiocommunications; 33.100.01 - Electromagnetic compatibility in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 301 025:2000 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.NRPXQLNDFLMVNRNOLFDElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and methods of measurement for VHF radiotelephone equipment for general communications and associated equipment for Class D Digital Selective Calling (DSC)33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:EN 301 025 Version 1.1.1SIST EN 301 025:2000en01-december-2000SIST EN 301 025:2000SLOVENSKI
STANDARD
EN 301 025 V1.1.1 (1998-08)European Standard (Telecommunications series)Electromagnetic compatibilityand Radio spectrum Matters (ERM);Technical characteristics and methods of measurement forVHF radiotelephone equipment for general communicationsand associated equipment for Class "D"Digital Selective Calling (DSC)SIST EN 301 025:2000
ETSIEN 301 025 V1.1.1 (1998-08)2ReferenceDEN/ERM-RP01-019 (9ho00ico.PDF)KeywordsMaritime, radio, trafficETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frhttp://www.etsi.frhttp://www.etsi.orgCopyright NotificationNo 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 1998.All rights reserved.SIST EN 301 025:2000
ETSIEN 301 025 V1.1.1 (1998-08)3ContentsIntellectual Property Rights.9Foreword.91Scope.102References.103Definitions and abbreviations.113.1Definitions.113.2Abbreviations.114General and operational requirements.114.1General.114.2Composition.114.3Construction.124.4Controls and indicators.124.5Facilities for coding and decoding of DSC.134.5.1Call functions.134.5.2MANUAL calls.134.5.3Distress calls.134.5.4ALL SHIPS calls.144.5.5Incoming calls.144.6DSC display.144.7Handset and loudspeaker.144.8Safety precautions.144.9Labelling.154.10Warm up.155Technical requirements.155.1Switching time.155.2Class of emission and modulation characteristics.155.3Facilities for DSC transmission and reception.155.3.1General.155.3.2Decoding.165.3.3Free channel transmission.165.3.4Automatic acknowledgement.165.3.5Automatic re-transmission of distress calls.165.4Ships identity - MMSI and Group MMSI.165.5Entry of position information.165.6Alarm circuits.175.6.1Distress and urgency.175.6.2Other categories.175.6.3Acoustic alarms.175.6.4Cancellation of alarms.175.7Facilities for automatic identification.175.8Multiple watch facilities.175.8.1General.175.8.2Scanning provisions.175.8.3Scanning characteristics.186General conditions of measurement.186.1Arrangements for test signals applied to the receiver input.186.2Squelch.186.3Normal test modulation.186.4Artificial antenna.196.5Arrangements for test signals applied to the transmitter input.196.6Test channels.19SIST EN 301 025:2000
ETSIEN 301 025 V1.1.1 (1998-08)46.7Generation and examination of the digital selective call signal.196.8Standard test signals for DSC.196.9Determination of the symbol error ratio in the output of the receiving part.196.10Measurement uncertainty and interpretation of the measured results.206.10.1Measurement uncertainty.206.10.2Interpretation of the measurement results.206.11Test conditions, power sources, and ambient temperatures.206.11.1Normal and extreme test conditions.206.11.2Test power source.206.12Normal test conditions.216.12.1Normal temperature and humidity.216.12.2Normal power sources.216.12.2.1Battery power source.216.12.2.2Other power sources.216.13Extreme test conditions.216.13.1Extreme temperatures.216.13.2Extreme values of test power sources.216.13.2.1Battery power source.216.13.2.2Other power sources.216.14Procedure for tests at extreme temperatures.217Environmental tests.227.1Introduction.227.2Procedure.227.3Performance check.227.4Vibration test.227.4.1Definition.227.4.2Method of measurement.227.4.3Requirement.237.5Temperature tests.237.5.1Definition.237.5.2Dry heat.237.5.2.1Definition.237.5.2.2Method of measurement.237.5.2.3Requirement.237.5.3Damp heat.237.5.3.1Definition.237.5.3.2Method of measurement.237.5.3.3Requirement.247.5.4Low temperature.247.5.4.1Definition.247.5.4.2Method of measurement.247.5.4.3Requirement.248Transmitter.248.1Frequency error.248.1.1Definition.248.1.2Method of measurement.248.1.3Limits.258.2Carrier power.258.2.1Definition.258.2.2Method of measurement.258.2.3Limits.258.2.3.1Normal test conditions.258.2.3.2Extreme test conditions.258.3Frequency deviation.258.3.1Definition.258.3.2Maximum permissible frequency deviation.258.3.2.1Method of measurement.258.3.2.2Limits.268.3.3Reduction of frequency deviation at modulation frequencies above 3 kHz.26SIST EN 301 025:2000
ETSIEN 301 025 V1.1.1 (1998-08)58.3.3.1Method of measurement.268.3.3.2Limits.268.4Sensitivity of the modulator, including microphone.268.4.1Definition.268.4.2Method of measurement.278.4.3Limits.278.5Audio frequency response.278.5.1Definition.278.5.2Method of measurement.278.5.3Limit.278.6Audio frequency harmonic distortion of the emission.288.6.1Definition.288.6.2Method of measurement.288.6.2.1Normal test conditions.298.6.2.2Extreme test conditions.298.6.3Limits.298.7Adjacent channel power.298.7.1Definition.298.7.2Method of measurement.298.7.3Limits.298.8Conducted spurious emissions conveyed to the antenna.308.8.1Definition.308.8.2Method of measurement.308.8.3Limit.308.9Cabinet radiation and conducted spurious emissions other than those conveyed to the antenna.308.9.1Definitions.308.9.2Method of measurement.308.9.3Limits.318.10Transient frequency behaviour of the transmitter.318.10.1Definitions.318.10.2Method of measurement.328.10.3Limits.348.11Residual modulation of the transmitter.348.11.1Definition.348.11.2Method of measurement.348.11.3Limit.348.12Frequency error (demodulated DSC signal).348.12.1Definition.348.12.2Method of measurement.358.12.3Limits.358.13Modulation index for DSC.358.13.1Definition.358.13.2Method of measurement.358.13.3Limits.358.14Modulation rate for DSC.358.14.1Definition.358.14.2Method of measurement.358.14.3Limits.358.15Testing of generated call sequences.368.15.1Definition.368.15.2Method of measurement.368.15.3Requirement.369Radiotelephone receiver.369.1Harmonic distortion and rated audio-frequency output power.369.1.1Definition.369.1.2Methods of measurement.369.1.3Limits.379.2Audio frequency response.379.2.1Definition.379.2.2Method of measurement.37SIST EN 301 025:2000
ETSIEN 301 025 V1.1.1 (1998-08)69.2.3Limits.379.3Maximum usable sensitivity.389.3.1Definition.389.3.2Method of measurement.389.3.3Limits.399.4Co-channel rejection.399.4.1Definition.399.4.2Method of measurement.399.4.3Limit.399.5Adjacent channel selectivity.399.5.1Definition.399.5.2Method of measurement.399.5.3Limits.409.6Spurious response rejection.409.6.1Definition.409.6.2Method of measurement.409.6.3Limit.409.7Intermodulation response.409.7.1Definition.409.7.2Method of measurement.419.7.3Limit.419.8Blocking or desensitization.419.8.1Definition.419.8.2Method of measurement.419.8.3Limit.419.9Spurious emissions.419.9.1Definition.419.9.2Method of measuring the power level.429.9.3Limit.429.10Radiated spurious emissions.429.10.1Definition.429.10.2Method of measurements.429.10.3Limit.439.11Receiver residual noise level.439.11.1Definition.439.11.2Method of measurement.439.11.3Limit.439.12Squelch operation.439.12.1Definition.439.12.2Method of measurement.439.12.3Limits.449.13Squelch hysteresis.449.13.1Definition.449.13.2Method of measurement.449.13.3Limit.449.14Multiple watch characteristic.449.14.1Definition.449.14.2Method of measurement.459.14.3Limits.4510Receiver for DSC decoder.4510.1Maximum usable sensitivity.4510.1.1Definition.4510.1.2Method of measurement.4510.1.3Limits.4510.2Co-channel rejection.4610.2.1Definition.4610.2.2Method of measurement.4610.2.3Limits.4610.3Adjacent channel selectivity.4610.3.1Definition.46SIST EN 301 025:2000
ETSIEN 301 025 V1.1.1 (1998-08)710.3.2Method of measurement.4610.3.3Limits.4610.4Spurious response and blocking immunity.4710.4.1Definition.4710.4.2Method of measurement.4710.4.3Limits.4710.5Intermodulation response.4710.5.1Definition.4710.5.2Method of measurement.4710.5.3Limits.4710.6Dynamic range.4810.6.1Definition.4810.6.2Method of measurement.4810.6.3Limit.4810.7Spurious emissions.4810.7.1Definition.4810.7.2Method of measuring the power level.4810.7.3Limit.4810.8Radiated spurious emissions.4810.8.1Definition.4810.8.2Method of measurements.4810.8.3Limit.4910.9Verification of correct decoding of various types of DSC calls.4910.9.1Definition.4910.9.2Method of measurement.4910.9.3Requirement.50Annex A (normative):DSC Calls.51Annex B (normative):Measuring receiver for adjacent channel power measurement.52B.1Power measuring receiver specification.52B.1.1IF filter.52B.1.2Attenuation indicator.53B.1.3R.M.S. value indicator.53B.1.4Oscillator and amplifier.53Annex C (normative):Radiated measurements.54C.1Test sites and general arrangements for measurements involving the use of radiated fields.54C.1.1Outdoor test site.54C.1.2Test antenna.54C.1.3Substitution antenna.55C.1.4Optional additional indoor site.55C.2Guidance on the use of radiation test sites.56C.2.1Measuring distance.56C.2.2Test antenna.56C.2.3Substitution antenna.
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