Global maritime distress and safety system (GMDSS) - Part 2: Cospas-Sarsat EPIRB - Emergency position indicating radio beacon operating on 406 MHz - Operational and performance requirements, methods of testing and required test results

IEC 61097-2:2021(E) specifies the minimum performance requirements, technical characteristics and type-testing requirements of the emergency position-indicating radio beacon used in the Cospas-Sarsat satellite system (EPIRB), as required by the International Convention for Safety of Life at Sea (SOLAS) as amended, and which is associated with IEC 60945. When a requirement in this document is different from the requirements in IEC 60945 or other standards, the requirement in this document takes precedence.
This document incorporates the performance standards of IMO Resolution MSC.471(101), the International Telecommunication Union (ITU) Radio Regulations as well as the technical characteristics for such transmitters contained in Recommendation ITU-R M.633, and takes account of the general requirements contained in IMO Resolution A.694(17).
This document also includes minimum performance standards for a non-float-free EPIRB without float-free release mechanism (see Annex C).
The contents of the corrigendum of December 2021 have been included in this copy.

General Information

Status
Published
Publication Date
23-Jun-2021
Current Stage
PPUB - Publication issued
Completion Date
24-Jun-2021
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IEC 61097-2:2021 - Global maritime distress and safety system (GMDSS) - Part 2: Cospas-Sarsat EPIRB - Emergency position indicating radio beacon operating on 406 MHz - Operational and performance requirements, methods of testing and required test results
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IEC 61097-2
Edition 4.0 2021-06
INTERNATIONAL
STANDARD
Global maritime distress and safety system (GMDSS) –
Part 2: Cospas-Sarsat EPIRB – Emergency position indicating radio beacon
operating on 406 MHz – Operational and performance requirements, methods of
testing and required test results
IEC 61097-2:2021-06(en)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61097-2
Edition 4.0 2021-06
INTERNATIONAL
STANDARD
Global maritime distress and safety system (GMDSS) –
Part 2: Cospas-Sarsat EPIRB – Emergency position indicating radio beacon
operating on 406 MHz – Operational and performance requirements, methods of
testing and required test results
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 47.020.70 ISBN 978-2-8322-9925-8

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC 61097-2:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 7

1 Scope .............................................................................................................................. 9

2 Normative references ...................................................................................................... 9

3 Terms, definitions and abbreviated terms ...................................................................... 11

3.1 Terms and definitions ............................................................................................ 11

3.2 Abbreviated terms ................................................................................................. 11

4 Performance requirements............................................................................................. 11

4.1 Compliance ........................................................................................................... 11

4.2 General ................................................................................................................. 12

4.3 Operational ........................................................................................................... 14

4.3.1 Prevention of inadvertent activation ............................................................... 14

4.3.2 Immersion, buoyancy and drop into water ...................................................... 14

4.3.3 Activation ...................................................................................................... 14

4.3.4 Self-test ......................................................................................................... 14

4.3.5 Colour and retro-reflecting material................................................................ 16

4.3.6 Lanyard ......................................................................................................... 16

4.3.7 Exposure to the marine environment .............................................................. 17

4.3.8 Ergonomics ................................................................................................... 17

4.3.9 Indication of insufficient battery energy .......................................................... 18

4.4 Control and indicator functions .............................................................................. 18

4.4.1 Control functions ........................................................................................... 18

4.4.2 Indicator functions ......................................................................................... 18

4.5 Float-free arrangements ........................................................................................ 19

4.5.1 General ......................................................................................................... 19

4.5.2 External power or data connection ................................................................. 19

4.5.3 Ability to check the automatic release ............................................................ 19

4.5.4 Manual release .............................................................................................. 20

4.6 Environment for EPIRB ......................................................................................... 20

4.6.1 General ......................................................................................................... 20

4.6.2 Temperature and icing ................................................................................... 20

4.6.3 Wind speed ................................................................................................... 20

4.6.4 Stowage ........................................................................................................ 20

4.6.5 Shock, vibration and other environmental conditions...................................... 20

4.7 Environment for float-free arrangement ................................................................. 20

4.8 Interference – Electromagnetic compatibility ......................................................... 21

4.9 Maintenance ......................................................................................................... 21

4.10 Safety precautions ................................................................................................ 21

4.11 Equipment manuals .............................................................................................. 22

4.12 Labelling ............................................................................................................... 23

4.12.1 Equipment labelling ....................................................................................... 23

4.12.2 Float-free arrangement labelling .................................................................... 24

4.12.3 Battery labelling ............................................................................................. 24

4.13 Installation ............................................................................................................ 24

5 Technical characteristics ............................................................................................... 24

5.1 Transmitted frequency .......................................................................................... 24

5.2 Signal and message format ................................................................................... 24

5.3 Distress message memory .................................................................................... 25

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IEC 61097-2:2021 © IEC 2021 – 3 –

5.4 Beacon identification code .................................................................................... 25

5.5 121,5 MHz homing signal ...................................................................................... 25

5.6 AIS locating signal ................................................................................................ 26

5.7 GNSS receiver and position reporting ................................................................... 27

5.8 RLS ...................................................................................................................... 27

5.8.1 RLS capability ............................................................................................... 27

5.8.2 RLS self-test .................................................................................................. 27

5.9 Power source ........................................................................................................ 28

5.9.1 General ......................................................................................................... 28

5.9.2 Battery life and expiry date ............................................................................ 28

5.9.3 Expiry date indication .................................................................................... 28

5.9.4 Reverse polarity protection ............................................................................ 28

5.10 Antenna characteristics ......................................................................................... 29

6 Methods of testing and required test results .................................................................. 29

6.1 General ................................................................................................................. 29

6.1.1 Purpose ......................................................................................................... 29

6.1.2 Type approval of EPIRBs operating in the Cospas-Sarsat system .................. 29

6.1.3 Power supply ................................................................................................. 30

6.1.4 Warm-up period ............................................................................................. 30

6.1.5 Instructions .................................................................................................... 30

6.1.6 Additional facilities ......................................................................................... 30

6.1.7 Audible and visual indications ........................................................................ 30

6.1.8 Preparation of EPIRB for type-approval testing .............................................. 30

6.1.9 Test conditions .............................................................................................. 30

6.1.10 Test sequence ............................................................................................... 31

6.1.11 Performance check ........................................................................................ 31

6.1.12 Performance test ........................................................................................... 31

6.2 General tests ........................................................................................................ 32

6.2.1 EPIRB ........................................................................................................... 32

6.2.2 Float-free arrangements ................................................................................ 32

6.3 Operational tests .................................................................................................. 33

6.3.1 Prevention of inadvertent activation ............................................................... 33

6.3.2 Immersion, buoyancy and drop into water ...................................................... 33

6.3.3 Activation ...................................................................................................... 34

6.3.4 Self-test ......................................................................................................... 36

6.3.5 Exterior, colour and retro-reflecting material .................................................. 37

6.3.6 Lanyard ......................................................................................................... 37

6.3.7 Exposure to marine environment ................................................................... 37

6.3.8 Ergonomics ................................................................................................... 38

6.3.9 Indication of insufficient battery energy .......................................................... 38

6.4 Control and indicator functions .............................................................................. 38

6.5 Float-free arrangements ........................................................................................ 39

6.5.1 Release ......................................................................................................... 39

6.5.2 Test to prevent release when sea water washes over the unit ........................ 39

6.5.3 Construction materials ................................................................................... 39

6.5.4 External power or data connection ................................................................. 39

6.5.5 Ability to check the automatic release ............................................................ 39

6.5.6 Manual release .............................................................................................. 39

6.6 Environment ......................................................................................................... 39

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– 4 – IEC 61097-2:2021 © IEC 2021

6.6.1 Temperature .................................................................................................. 40

6.6.2 Icing .............................................................................................................. 40

6.6.3 Wind speed ................................................................................................... 40

6.6.4 Stowage ........................................................................................................ 40

6.6.5 Shock, vibration and other environmental conditions...................................... 40

6.7 Environment for float-free arrangement ................................................................. 40

6.8 Interference – Electromagnetic compatibility ......................................................... 40

6.9 Maintenance ......................................................................................................... 40

6.10 Safety precautions ................................................................................................ 40

6.11 Equipment manuals .............................................................................................. 40

6.12 Labelling ............................................................................................................... 41

6.12.1 Equipment labelling ....................................................................................... 41

6.12.2 Float-free arrangement labelling .................................................................... 41

6.12.3 Battery labelling ............................................................................................. 41

6.13 Installation ............................................................................................................ 41

6.14 Technical characteristics ....................................................................................... 41

6.14.1 406 MHz signal characteristics ...................................................................... 41

6.14.2 121,5 MHz homing signal............................................................................... 41

6.14.3 AIS locating signal ......................................................................................... 41

6.14.4 GNSS receiver and position reporting ............................................................ 41

6.14.5 RLS ............................................................................................................... 42

6.15 Power source ........................................................................................................ 42

6.15.1 Battery capacity test ...................................................................................... 42

6.15.2 Expiry date indication .................................................................................... 43

6.15.3 Reverse polarity protection ............................................................................ 43

6.15.4 User-replaceable battery ............................................................................... 43

6.16 Antenna characteristics ......................................................................................... 43

6.17 Environment ......................................................................................................... 43

6.17.1 General ......................................................................................................... 43

6.17.2 Dry heat cycle, of IEC 60945 ......................................................................... 43

6.17.3 Damp heat cycle, of IEC 60945 ...................................................................... 44

6.17.4 Low-temperature cycle, of IEC 60945 ............................................................ 44

6.17.5 Thermal shock tests....................................................................................... 44

6.17.6 Drop test for portable equipment, of IEC 60945 ............................................. 44

6.17.7 Vibration test, of IEC 60945 ........................................................................... 45

6.17.8 Ruggedness test ............................................................................................ 45

6.17.9 Immersion test, of IEC 60945......................................................................... 45

6.17.10 Solar radiation test, of IEC 60945 .................................................................. 46

6.17.11 Oil resistance test, of IEC 60945 ................................................................... 46

6.17.12 Corrosion test, of IEC 60945 .......................................................................... 46

6.18 Interference testing ............................................................................................... 46

6.19 Spurious emissions ............................................................................................... 46

6.20 Compass safe distance ......................................................................................... 47

6.21 Conducted interference ......................................................................................... 47

Annex A (normative) Sequence of tests ............................................................................... 48

A.1 Compulsory sequence of tests .............................................................................. 48

A.2 Additional tests ..................................................................................................... 49

Annex B (normative) Internal and external navigation devices GNSS receivers .................... 50

B.1 General ................................................................................................................. 50

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IEC 61097-2:2021 © IEC 2021 – 5 –

B.2 External navigation devices .................................................................................. 50

B.3 Internal navigation receivers ................................................................................. 51

B.4 Internal navigation device tests ............................................................................. 52

B.4.1 General ......................................................................................................... 52

B.4.2 Test description ............................................................................................. 52

B.4.3 Test facility requirements, test set-up and calibration .................................... 54

B.4.4 Method of measurement ................................................................................ 59

B.4.5 Required results ............................................................................................ 59

B.4.6 Test results.................................................................................................... 60

Annex C (normative) Standards for an EPIRB without a float-free mechanism ..................... 63

C.1 Requirements ....................................................................................................... 63

C.2 Tests .................................................................................................................... 64

Annex D (normative) Technical standards for 121,5 MHz homing device .............................. 65

D.1 General ................................................................................................................. 65

D.2 Performance requirements .................................................................................... 65

D.3 Technical characteristics ....................................................................................... 65

D.4 Methods of testing and required test results .......................................................... 66

D.4.1 General ......................................................................................................... 66

D.4.2 Carrier frequency ........................................................................................... 66

D.4.3 Peak effective radiated power ........................................................................ 66

D.4.4 Off-ground plane radiated power test ............................................................. 67

D.4.5 Transmitter duty cycle ................................................................................... 68

D.4.6 Modulation characteristics ............................................................................. 68

Annex E (normative) AIS locating signal specification .......................................................... 72

E.1 General ................................................................................................................. 72

E.2 Performance characteristics .................................................................................. 72

E.2.1 Requirement .................................................................................................. 72

E.2.2 Interoperability ............................................................................................... 72

E.2.3 Operational functions ..................................................................................... 72

E.2.4 Unique identifier (user ID) .............................................................................. 73

E.2.5 AIS and other EPIRB transmissions ............................................................... 73

E.2.6 Output power ................................................................................................. 73

E.2.7 Transmission performance ............................................................................. 73

E.2.8 Position source and data ............................................................................... 76

E.3 Technical characteristics ....................................................................................... 76

E.3.1 Transmitter requirements and characteristics ................................................. 76

E.3.2 Link layer requirements ................................................................................. 76

E.4 Performance tests ................................................................................................. 77

E.4.1 General ......................................................................................................... 77

E.4.2 Performance requirements ............................................................................. 77

E.4.3 Preparation of the EPIRB for testing .............................................................. 77

E.4.4 Test signals ................................................................................................... 78

E.4.5 Modes of operation of the transmitter............................................................. 78

E.5 Physical radio tests ............................................................................................... 78

E.5.1 General ......................................................................................................... 78

E.5.2 On-ground plane radiated power .................................................................... 78

E.5.3 Off-ground plane radiated power.................................................................... 79

E.6 Link layer tests ..................................................................................................... 79

E.7 GNSS self-test mode tests .................................................................................... 80

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– 6 – IEC 61097-2:2021 © IEC 2021

E.7.1 General ......................................................................................................... 80

E.7.2 Transmission with GNSS data available ......................................................... 80

E.7.3 Transmission without GNSS data available .................................................... 80

Annex F (informative) Symbols ............................................................................................ 81

Annex G (informative) IEC 61162-1 RLM sentence notes ..................................................... 84

Bibliography .......................................................................................................................... 86

Figure 1 – Hand sizes ........................................................................................................... 17

Figure 2 – AIS and 121,5 MHz signal interleaving ................................................................. 26

Figure B.1 – Test set-up ....................................................................................................... 56

Figure B.2 – Calibration set-up ............................................................................................. 57

Figure D.1 – Spurious emission mask for 121,5 MHz signal .................................................. 70

Figure D.2 – Typical modulation waveforms .......................................................................... 71

Table 1 – EPIRB control functions ........................................................................................ 12

Table 2 – Effective luminous intensity ................................................................................... 35

Table 3 – Radiant intensity ................................................................................................... 36

Table B.1 – Maritime scenarios ............................................................................................. 54

Table B.2 – G values ....................................................................................................... 58

Pol

Table B.3 – Maritime scenarios test results ........................................................................... 61

Table B.4 – Maritime scenarios results analysis .................................................................... 61

Table B.5 – Pass/Fail analysis .............................................................................................. 62

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IEC 61097-2:2021 © IEC 2021 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GLOBAL MARITIME DISTRESS AND SAFETY SYSTEM (GMDSS) –
Part 2: Cospas-Sarsat EPIRB – Emergency position
indicating radio beacon operating on 406 MHz –
Operational and performance requirements,
methods of testing and required test results
FOREWORD
1) The International Electrotechnical Commission (IEC) is a
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