1. Manuals
  2. Brands
  3. ETSI Manuals
  4. Marine Equipment
  5. ETS 300 441
  6. Instruction manual

ETSI ETS 300 441 Instruction Manual

Radio equipment and systems, technical characteristics and methods of measurement for maritime radiotelephone watch receivers for the distress and calling frequency
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
E
UROPEAN
T
ELECOMMUNICATION
S
TANDARD
Source: ETSI TC-RES
ICS: 33.060.20
Key words: Emergency, maritime, mobile, radio, receiver
Technical characteristics and methods of measurement for
maritime radiotelephone watch receivers for the distress
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr
*
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 1996. All rights reserved.
Radio Equipment and Systems (RES);
and calling frequency 2 182 kHz
European Telecommunications Standards Institute
ETSI Secretariat
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
ETSI
ETS 300 441
February 1996
Reference: DE/RES-01-07

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the ETS 300 441 and is the answer not in the manual?

Questions and answers

Related Manuals for ETSI ETS 300 441

Summary of Contents for ETSI ETS 300 441

  • Page 1 Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16 Copyright Notification: No part may be reproduced except as authorized by written permission.
  • Page 2 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to "ETSI Editing and Committee Support Dept." at the address shown on the title page.
  • Page 3 Page 3 ETS 300 441: February 1996 Contents Foreword ...............................7 Scope ..............................9 Normative references..........................9 Abbreviations and symbols .........................9 Abbreviations ........................9 Symbols ..........................9 General requirements ........................10 Construction........................10 4.1.1 Equipment elements..................10 4.1.2 Design ......................10 4.1.3 Inspection and maintenance .................10 4.1.4 Illumination ....................10 4.1.5...
  • Page 4 Page 4 ETS 300 441: February 1996 5.8.1 Measurement uncertainty ................14 5.8.2 Interpretation of the measurement results............ 14 Environmental tests .......................... 15 Introduction........................15 Procedure.......................... 15 Performance check ......................15 Vibration test ........................15 6.4.1 Method of measurement................15 6.4.2...

  • Page 5: Table Of Contents

    Page 5 ETS 300 441: February 1996 7.13 Protection of input circuits....................21 7.13.1 Definition .......................21 7.13.2 Method of measurement ................21 7.13.3 Limit.......................21 Muting device ............................22 General ..........................22 Mute response ........................22 8.2.1 Methods of measurement ................22 8.2.2 Response to the radiotelephone alarm signal ..........22 8.2.3...
  • Page 6 Page 6 ETS 300 441: February 1996 Blank page...
  • Page 7 ETS 300 441: February 1996 Foreword This European Telecommunication Standard (ETS) has been produced by the Radio Equipment and Systems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI). Transposition dates Date of adoption of this ETS: 23 February 1996...
  • Page 8 Page 8 ETS 300 441: February 1996 Blank page...
  • Page 9 Page 9 ETS 300 441: February 1996 Scope This ETS states the minimum requirements for maritime radiotelephone watch receivers, including power supply units or converters, intended for keeping watch on the international distress and calling frequency 2 182 kHz. This ETS is intended to cover equipment installed below deck in accordance with the requirement of the International Maritime Organization (IMO) [2].
  • Page 10 Page 10 ETS 300 441: February 1996 General requirements Construction 4.1.1 Equipment elements The equipment shall comprise the following elements: a receiver; a loudspeaker; a filtering unit and/or a muting device to silence the loudspeaker in the absence of any of the signals stated in clause 8;...
  • Page 11 Page 11 ETS 300 441: February 1996 control for disabling the automatic control as described in subclause 8.4; a manual switch to take the mute and/or filtering unit out of operation. 4.2.3 Indicators The status of all the controls shall be clearly indicated.
  • Page 12 Page 12 ETS 300 441: February 1996 Classes of emission The receiver shall be capable of receiving emissions of classes A2A, H2A, A3E and H3E. Warming up period The equipment shall meet the requirements of this ETS one minute after being switched on.
  • Page 13 Page 13 ETS 300 441: February 1996 5.3.2 Normal test power source 5.3.2.1 Mains voltage and frequency The normal test voltage for equipment to be connected to the ac mains shall be the nominal ac mains voltage. For the purpose of conformance testing, the nominal voltage shall be the declared voltage or any of the declared voltages for which the equipment is designed.
  • Page 14 Page 14 ETS 300 441: February 1996 The temperature of the chamber shall be maintained at the extreme temperatures for the whole duration of the performance test. At the end of the test, with the equipment still in the chamber, the chamber shall be brought to normal temperature in not less than one hour.
  • Page 15 Page 15 ETS 300 441: February 1996 Environmental tests Introduction The equipment shall be capable of continuous operation under the conditions of various sea states, vibration, humidity and change of temperature likely to be experienced in a ship in which it is installed.
  • Page 16 Page 16 ETS 300 441: February 1996 6.4.2 Requirement The limit of the performance check shall be met. There shall be no harmful deterioration of the equipment visible to the naked eye. Damp heat test 6.5.1 General The maximum rate of raising or reducing the temperature of the chamber in which the equipment is being tested shall be 10°C/min.
  • Page 17 Page 17 ETS 300 441: February 1996 Maximum usable sensitivity 7.2.1 Definition The maximum usable sensitivity is the minimum level of a radio frequency signal with specified modulation, which produces at the receiver output a chosen value of the signal-noise-distortion to noise (SND/N) ratio and, at the same time, an output power at least equal to a specified value.
  • Page 18 Page 18 ETS 300 441: February 1996 An unwanted A2A signal at a frequency shown in table 2, modulated to a depth of 30 % at 400 Hz, shall additionally be applied to the receiver input. Starting from a low level, this signal shall be increased until the SND/N ratio is decreased from 20 dB to 14 dB.
  • Page 19 Page 19 ETS 300 441: February 1996 7.6.2 Method of measurement The test shall be carried out with the automatic gain control operative. The measurement shall be made by means of the simultaneous application of two test signals to the input of the receiver. One of the test signals is the wanted signal to which the receiver is tuned and the other is the unwanted signal.
  • Page 20 Page 20 ETS 300 441: February 1996 7.8.2 Method of measurement An A2A test signal at the carrier frequency 2 182 kHz, modulated to a depth of 30 % at 1 kHz shall be applied to the receiver input at a level such that a SND/N ratio of 10 dB is produced.

  • Page 21: Protection Of Input Circuits

    Page 21 ETS 300 441: February 1996 NOTE: The receiver should be designed to prevent excessive noise at the receiver output in the absence of input signals. 7.11.1 Methods of measurement to test the AGC at low input signal levels, an A2A test signal at the carrier frequency 2 182 kHz modulated to a depth of 30 % at 1 kHz, shall be applied to the receiver input.

  • Page 22: Muting Device

    Page 22 ETS 300 441: February 1996 Muting device General The equipment may be provided with a muting device to silence the loudspeaker until one of the following signals is received: the radiotelephone alarm signal (subclause 8.2.2); the signal preceding a vital navigation warning (subclause 8.2.3);...

  • Page 23: Response To The 1 300 Hz Epirb Signal

    Page 23 ETS 300 441: February 1996 250 ms ± 50 ms. modulation off: 8.2.4 Response to the 1 300 Hz EPIRB signal An A2A test signal at the carrier frequency 2 182 kHz modulated to a depth of 30 % at 1 300 Hz and having a pulse sequence of one second signal followed by one second no signal shall be applied to the receiver input.

  • Page 24: Limits

    Page 24 ETS 300 441: February 1996 modulation off: 250 ms; modulation off: 175 ms or less; 325 ms or greater; modulation on: 250 ms. 8.3.2 Limits The output power due to modulation shall not exceed 30 dB below the standard output power.

  • Page 25: History

    Page 25 ETS 300 441: February 1996 History Document history September 1994 Public Enquiry PE 70: 1994-09-05 to 1994-12-30 December 1995 Vote V 93: 1995-12-11 to 1996-02-02 February 1996 First Edition ISBN 2-7437-0525-6 Dépôt légal : février 1996...

Table of Contents