SIST EN 300 373-1 V1.2.1:2003

• Abstract:

  General revision in the light of Directive 1999/5/EC. Refers to requirements from ETS 300 373.

• Status: Published
• Publication Date: 30-Nov-2003
• 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: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 300 373-1 V1.2.1 (2002-10) - Electromagnetic compatibility and Radio spectrum Matters (ERM); Maritime mobile transmitters and receivers for use in the MF and HF bands; Part 1: Technical characteristics and methods of measurement

Overview

SIST EN 300 373-1 V1.2.1:2003 sets out the technical characteristics and methods of measurement for maritime mobile transmitters and receivers operating in the Medium Frequency (MF) and High Frequency (HF) bands. Developed in accordance with Directive 1999/5/EC, this standard focuses on electromagnetic compatibility (EMC) and efficient use of the radio spectrum to support safe and reliable maritime communication. By harmonizing requirements originally detailed in ETS 300 373, it ensures equipment performance, safety, and regulatory compliance for navigation and control applications at sea.

Key Topics

The standard outlines a comprehensive set of requirements and test procedures, including:

• Construction and Design: Specifications for equipment resilience, control interfaces, safety precautions, and labeling.
• Power Supplies: Handling of mains and secondary battery sources to ensure resilience in marine environments.
• Operational Controls: Guidelines for indicators, distress controls, frequency selection, and emission class indications.
• Environmental Robustness: Prescribes environmental tests such as vibration, temperature extremes, damp heat, corrosion, and rain resistance to guarantee operation under adverse conditions.
• Electromagnetic Compatibility: Testing for conducted and radiated emissions, including limits for spurious and unwanted emissions to prevent interference.
• Immunity Requirements: Procedures for testing against electrostatic discharge, RF fields, power surges, and other transient phenomena to ensure reliable operation.
• Transmitter and Receiver Performance: Defines measurement methods and limits for output power, sensitivity, frequency error, signal clarity, and emission filtering.
• Testing Methods: Establishes standardized testing conditions and performance criteria, including artificial antennas and test signals for consistent evaluation.

Applications

This standard is essential for:

• Designers and Manufacturers: Ensuring that MF and HF maritime transmitters and receivers meet strict EMC and radio spectrum requirements for both commercial and safety-critical applications.
• Ship Operators and Installers: Supporting safe maritime operations through certified radio equipment, compliant with international EMC and spectrum practices.
• Ship Class Societies and Surveyors: Verifying that vessel equipment installations adhere to recognized maritime communication standards.
• Regulatory Bodies and Authorities: Facilitating market approval, radio licensing, and harmonized equipment assessment in line with European Directives.
• Maritime Safety Systems: Integrating compliant radio devices into navigation, distress signaling, and communication networks for vessels of all sizes.

Related Standards

When implementing SIST EN 300 373-1 V1.2.1:2003, consider the following related standards:

• EN 300 373-1 (ETSI): The European equivalent, underpinning harmonized maritime equipment criteria.
• IEC 60945: Standard for marine navigation and radiocommunication equipment and systems - General requirements.
• EN 301 843: EMC standard for marine radio equipment and systems.
• IEC 61162: Communication interfaces for marine electronic devices.
• Directive 1999/5/EC (R&TTE): Establishes the regulatory framework for radio equipment and telecommunications terminal equipment.
• Other MF/HF Equipment Standards: For detailed emission, immunity, and operational characteristics.

Practical Value

By following SIST EN 300 373-1 V1.2.1:2003, organizations ensure that maritime radio transmitters and receivers:

• Deliver reliable communication under harsh marine conditions
• Maintain electromagnetic compatibility, reducing risk of interference
• Support maritime safety and regulatory compliance
• Enable seamless integration with navigation and control systems

Adherence to this standard is crucial for quality, safety, and legal acceptance of MF and HF marine radio equipment throughout the European maritime sector.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Electromagnetic compatibility and Radio spectrum Matters (ERM); Maritime mobile transmitters and receivers for use in the MF and HF bands; Part 1: Technical characteristics and methods of measurement47.020.70Navigacijska in krmilna opremaNavigation and control equipment33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.20Sprejemna in oddajna opremaReceiving and transmitting equipmentICS:Ta slovenski standard je istoveten z:EN 300 373-1 Version 1.2.1SIST EN 300 373-1 V1.2.1:2003en01-december-2003SIST EN 300 373-1 V1.2.1:2003SLOVENSKI
STANDARD
ETSI ETSI EN 300 373-1 V1.2.1 (2002-10) 2
Reference REN/ERM-RP01-027-1 Keywords maritime, radio, telephony ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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© European Telecommunications Standards Institute 2002. All rights reserved.
DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. SIST EN 300 373-1 V1.2.1:2003

ETSI ETSI EN 300 373-1 V1.2.1 (2002-10) 3
Contents Intellectual Property Rights.9 Foreword.9 1 Scope.10 2 References.10 3 Definitions, symbols and abbreviations.12 3.1 Definitions.12 3.2 Symbols.13 3.3 Abbreviations.13 4 General requirements.14 4.1 Construction.14 4.1.1 Design.14 4.1.2 Inspection and maintenance.14 4.1.3 Illumination.14 4.1.4 Antenna static protection.14 4.1.5 Digital input panels.14 4.1.6 Audio frequencies interfaces.14 4.1.7 Antenna matching.15 4.2 Controls and indicators.15 4.2.1 General.15 4.2.2 Ease of use.16 4.2.3 Loudspeaker switching.16 4.2.4 Noise reducer.16 4.2.5 Frequency indication and class of emission.16 4.2.6 Synthesizer lock.16 4.2.7 Channel switching.16 4.2.8 Distress controls.16 4.2.9 Telephony transmit control.16 4.2.10 Misuse.16 4.2.11 Control panel priority.17 4.2.12 Manual gain control and Automatic Gain Control (AGC).17 4.2.13 Output indication.17 4.3 Labels.17 4.3.1 General.17 4.3.2 Power supplies.17 4.3.3 Distress frequencies.17 4.3.4 Manufacturer.17 4.3.5 Compass safe distance.18 4.4 Safety precautions.18 4.4.1 Protection.18 4.4.2 Earthing.18 4.4.3 Access.18 4.4.4 Memories.18 4.5 Classes of emission.18 4.6 Frequency bands.18 4.6.1 Requirement.18 4.6.2 MF band.19 4.6.3 HF bands.19 4.7 Warming up period.19 4.7.1 Time.19 4.7.2 Heaters.19 4.7.3 Heating circuits.19 4.7.4 Delay.19 4.8 Instructions.19 4.8.1 Repair instructions.19 SIST EN 300 373-1 V1.2.1:2003

ETSI ETSI EN 300 373-1 V1.2.1 (2002-10) 4
4.8.2 Accessibility.19 5 Test conditions.20 5.1 General.20 5.2 Test power source.20 5.3 Normal test conditions.20 5.3.1 Normal temperature and humidity.20 5.3.2 Normal test power source.20 5.3.2.1 Mains voltage and frequency.20 5.3.2.2 Secondary battery power sources.20 5.3.2.3 Other power sources.20 5.4 Extreme test conditions.21 5.4.1 Extreme temperature tests.21 5.4.2 Extreme values of test power source.21 5.4.2.1 Mains voltage and mains frequency.21 5.4.2.2 Secondary battery power sources.21 5.4.2.3 Other power sources.21 5.5 Artificial antennas.21 5.5.1 Transmitters.21 5.5.2 Receivers.22 5.6 Standard test signals.22 5.6.1 Test signals applied to the receiver input.22 5.6.1.1 Sources.22 5.6.1.2 Levels.22 5.6.2 Normal test signals.22 5.6.2.1 Class of emission J3E.22 5.6.2.2 Class of emission F1B.22 5.6.3 Choice of testing frequencies.22 5.7 Measurement uncertainty and interpretation of the measuring results.23 5.7.1 Measurement uncertainty.23 5.7.2 Interpretation of measurement results.23 6 General conditions of measurement.23 6.1 Sequence of testing.23 6.2 Test signals and monitoring during EMC testing.24 6.2.1 Test frequencies during EMC testing.24 6.2.2 Arrangements for monitoring the receiver output during EMC testing.24 6.2.3 Arrangements for test signals applied to the receiver input during EMC testing.24 6.2.4 Arrangements for test signal applied to the transmitter input during EMC testing.24 6.2.5 Normal test modulation of the transmitter during EMC testing.25 6.2.6 Arrangements for monitoring the transmitter output during EMC testing.25 7 Environmental tests.25 7.1 Introduction.25 7.2 Procedure.25 7.3 Performance check.26 7.4 Vibration test.26 7.4.1 Method of measurement.26 7.4.2 Requirement.27 7.5 Temperature tests.27 7.5.1 General.27 7.5.2 Dry heat.27 7.5.2.1 Internally mounted equipment.27 7.5.2.1.1 Method of measurement.27 7.5.2.1.2 Requirement.27 7.5.2.2 Externally mounted equipment.27 7.5.2.2.1 Method of measurement.27 7.5.2.2.2 Requirement.28 7.5.3 Damp heat.28 7.5.3.1 Method of measurement.28 7.5.3.2 Requirement.28 7.5.4 Low temperature cycle.28 7.5.4.1 Internally mounted equipment.28 SIST EN 300 373-1 V1.2.1:2003

ETSI ETSI EN 300 373-1 V1.2.1 (2002-10) 5
7.5.4.1.1 Method of measurement.28 7.5.4.1.2 Requirement.28 7.5.4.2 Externally mounted equipment.28 7.5.4.2.1 Method of measurement.28 7.5.4.2.2 Requirement.29 7.6 Corrosion test.29 7.6.1 General.29 7.6.2 Method of measurement.29 7.6.3 Requirements.30 7.7 Rain test.30 7.7.1 General.30 7.7.2 Method of measurement.30 7.7.3 Requirements.30 8 Emissions tests.31 8.1 General conditions for emissions tests.31 8.2 Conducted emissions from power ports.31 8.2.1 Definition.31 8.2.2 Test method.31 8.2.3 Limits.32 8.3 Radiated emissions from the enclosure port.32 8.3.1 Definition.32 8.3.2 Method of test.32 8.3.3 Limits.33 9 Immunity tests.33 9.1 General conditions for immunity tests.33 9.1.1 Introduction.33 9.1.2 Performance assessment.33 9.1.3 Ancillary equipment.34 9.1.4 Test configuration.34 9.1.5 Exclusion bands.34 9.1.5.1 Definition.34 9.1.5.2 Transmitter exclusion band for immunity tests.34 9.1.5.3 Receiver exclusion band for immunity tests.34 9.1.6 Assessment of receiver responses.35 9.2 Performance criteria.35 9.2.1 Categories.35 9.2.2 Performance criteria A for continuous phenomena.35 9.2.3 Performance criteria B for transient phenomena.35 9.2.4 Performance criteria C for power supply failure.36 9.2.5 Immunity performance check.36 9.3 Electrostatic discharge immunity (ESD).36 9.3.1 Definition.36 9.3.2 Test method.36 9.3.3 Performance criteria.36 9.4 RF electromagnetic fields in the frequency range 80 MHz to 2 GHz.37 9.4.1 Definition.37 9.4.2 Test method.37 9.4.3 Performance criteria.37 9.5 Fast transient, common mode.37 9.5.1 Definition.37 9.5.2 Test method.37 9.5.3 Performance criteria.38 9.6 Conducted disturbances on power ports (RF common mode).38 9.6.1 Definition.38 9.6.2 Test method.38 9.6.3 Performance criteria.39 9.7 Power supply short term variations.39 9.7.1 Definition.39 9.7.2 Test method.39 9.7.3 Performance criteria.40 SIST EN 300 373-1 V1.2.1:2003

ETSI ETSI EN 300 373-1 V1.2.1 (2002-10) 6
9.8 Power supply failure.40 9.8.1 Definition.40 9.8.2 Test method.40 9.8.3 Performance criteria.40 9.9 Surge.40 9.9.1 Definition.40 9.9.2 Test method.40 9.9.3 Performance criteria.41 10 Transmitter.41 10.1 General.41 10.1.1 Output power reduction.41 10.1.2 Class of emission.41 10.1.3 Minimum number of operating frequencies.41 10.1.3.1 Transmitters operating between 1 605 kHz to 4 000 kHz only.41 10.1.3.2 Transmitters operating between 1 605 kHz to 27 500 kHz.41 10.2 Frequency error.41 10.2.1 Definition.41 10.2.2 Method of measurement.42 10.2.3 Limits.42 10.3 Output power and intermodulation products.42 10.3.1 Definitions.42 10.3.2 Method of measurement.42 10.3.3 Limits.43 10.3.3.1 Output power in the range 1 605 kHz to 4 000 kHz for all modulation modes.43 10.3.3.2 Output power in the range 4 MHz to 27,5 MHz for all modulation modes.43 10.3.3.3 Intermodulation products for SSB telephony modes.43 10.3.3.4 Difference of power of B-state frequency and Y-state frequency.43 10.3.3.5 Output spectrum.43 10.4 Unwanted frequency modulation.44 10.4.1 Definition.44 10.4.2 Method of measurement.44 10.4.3 Limits.45 10.5 Sensitivity of the microphone.45 10.5.1 Definition.45 10.5.2 Method of measurement.45 10.5.3 Limits.45 10.6 Sensitivity of the 600 Ω line input for SSB telephony.45 10.6.1 Definition.45 10.6.2 Method of measurement.45 10.6.3 Limits.45 10.7 Automatic level control and/or limiter for SSB telephony.45 10.7.1 Method of measurement.45 10.7.2 Limits.46 10.8 Audio frequency response of SSB telephony.46 10.8.1 Definition.46 10.8.2 Method of measurement.46 10.8.3 Limits.47 10.9 Power of out-of-band emissions of SSB telephony.47 10.9.1 Definition.47 10.9.2 Method of measurement.47 10.9.3 Limits.48 10.10 Power of conducted spurious emissions of SSB telephony.48 10.10.1 Definition.48 10.10.2 Method of measurement.48 10.10.3 Limits.48 10.11 Residual hum and noise power for telephony.48 10.11.1 Definition.48 10.11.2 Method of measurement.49 10.11.3 Limits.49 10.12 Residual frequency modulation on DSC.49 10.12.1 Definition.49 SIST EN 300 373-1 V1.2.1:2003

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10.12.2 Method of measurement.49 10.12.3 Limits.49 10.13 Carrier suppression.49 10.13.1 Definition.49 10.13.2 Method of measurement.49 10.13.3 Limits.50 10.14 Continuous operation on telephony.50 10.14.1 Definition.50 10.14.2 Method of measurement.50 10.14.3 Limits.50 10.15 Protection of transmitter.50 10.15.1 Definition.50 10.15.2 Method of measurement.50 10.15.3 Limits.50 11 Receiver.51 11.1 Receiver output powers.51 11.1.1 Standard output power.51 11.1.2 Rated output power.51 11.2 Frequency error.51 11.2.1 Definition.51 11.2.2 Method of measurement.51 11.2.3 Limits.51 11.3 Unwanted frequency modulation.52 11.3.1 Definition.52 11.3.2 Method of measurement.52 11.3.3 Limits.52 11.4 Pass band.52 11.4.1 Definition.52 11.4.2 Method of measurement.
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