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IEC 60825-12
Edition 2.0 2019-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Safety of laser products –
Part 12: Safety of free space optical communication systems used for
transmission of information
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IEC 60825-12
Edition 2.0 2019-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Safety of laser products –
Part 12: Safety of free space optical communication systems used for
transmission of information
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.260 ISBN 978-2-8322-6559-8
– 2 – IEC 60825-12:2019 RLV © IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 7
4 Requirements . 12
4.1 General remarks . 12
4.2 Determination of access level . 13
4.2.1 General . 13
4.2.2 The use of Condition 2 . 13
4.2.3 The use of C7 . 16
4.3 Impact of using automatic power reduction features . 17
4.4 Access level and classification requirements by location type . 17
4.4.1 General . 17
4.4.2 Requirements for unrestricted locations . 19
4.4.3 Requirements for restricted locations . 23
4.4.4 Requirements for controlled locations . 24
4.4.5 Requirements for inaccessible space . 25
4.5 Classification . 25
4.5.1 General . 25
4.5.2 Automatic power reduction mechanisms (APR) . 26
4.6 Installation protection systems (IPS) . 27
4.7 Specular reflections . 27
4.8 Organizational requirements . 27
4.8.1 Requirements for manufacturers of ready-to-use FSOCS transmitters or
turn key systems. 27
4.8.2 Installation and service organization requirements . 29
4.8.3 Operating organization requirements . 30
Annex (informative) Examples of applications and calculations .
Annex A (informative) Methods of hazard/safety analysis . 38
Annex B (informative) Guidance for installing, servicing and operating organizations . 39
B.1 General Working practices for FSOCSs . 39
B.1.1 General . 39
B.1.2 General working practices . 39
B.1.3 Additional working practices for Class/access level 1M, 2M, 3R, 3B and
4 systems . 40
B.2 Education and training . 40
Bibliography . 41
Figure – Link between two widely separated locations .
Figure 1 – Commercial structures . 18
Figure 2 – Residential areas . 19
Figure 3 – Examples of external location types . 20
Figure 4 – Class 1M or 2M transmitter near edge of unrestricted rooftop . 21
Figure 5 – Class 1M transmitter in unrestricted location . 22
Figure 6 – Class 3R transmitter in restricted location . 24
Table 1 – Restrictions for product classes and access levels . 13
Table 2 – Measurement aperture diameters and distances for the default (simplified)
evaluation . 14
Table 3 – Requirements for warning signs . 30
– 4 – IEC 60825-12:2019 RLV © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY OF LASER PRODUCTS –
Part 12: Safety of free space optical communication
systems used for transmission of information
FOREWORD
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This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
International Standard IEC 60825-12 has been prepared by IEC technical committee 76:
Optical radiation safety and laser equipment.
This second edition cancels and replaces the first edition published in 2004. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) LEDs have been removed from the scope.
b) Normative references have been changed to refer the latest edition of the standards.
c) A description of the Condition 2 measurement and determination method for access level
has been added.
The text of this standard is based on the following documents:
FDIS Report on voting
76/616/FDIS 76/617/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The list of all parts of the IEC 60825 series, published under the general title Safety of laser
products, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.
– 6 – IE
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