IEC 61300-3-21:2019

IEC 61300-3-21 ®
Edition 3.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 3-21: Examinations and measurements – Switching time

Dispositifs d’interconnexion et composants passifs fibroniques – Procedures
fondamentales d'essais et de mesures –
Partie 3-21: Examens et mesures – Temps de commutation

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IEC 61300-3-21 ®
Edition 3.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures –
Part 3-21: Examinations and measurements – Switching time

Dispositifs d’interconnexion et composants passifs fibroniques – Procedures

fondamentales d'essais et de mesures –

Partie 3-21: Examens et mesures – Temps de commutation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-7376-0

– 2 – IEC 61300-3-21:2019 © IEC 2019
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Apparatus . 6
4.1 General description . 6
4.2 Optical source (S) . 7
4.3 Detector (D) . 7
4.4 Actuation energy supply (AS) . 7
4.5 Data acquisition system (DAS) . 7
4.6 Termination (T) . 7
4.7 Temporary joint (TJ) . 7
5 Procedure . 8
6 Details to be specified . 9
Bibliography . 10

Figure 1 – Measurement set-up using a 2-channel DAS to measure a single output port . 8
Figure 2 – Example of a port moving to an on-state or off-state . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE
COMPONENTS – BASIC TEST AND MEASUREMENT PROCEDURES –

Part 3-21: Examinations and measurements – Switching time

FOREWORD
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International Standard IEC 61300-3-21 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
This third edition cancels and replaces the second edition published in 2014. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) changes to remove redundant overlap with IEC 60876-1;
b) clarifications to definitions and diagrams;
c) generalization of the detection apparatus beyond an oscilloscope.

– 4 – IEC 61300-3-21:2019 © IEC 2019
The text of this International Standard is based on the following documents:
FDIS Report on voting
86B/4218/FDIS 86B/4230/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.
A list of all parts in the IEC 61300 series, published under the general title, Fibre optic
interconnecting devices and passive components – Basic test and measurement procedures,
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.
FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE
COMPONENTS – BASIC TEST AND MEASUREMENT PROCEDURES –

Part 3-21: Examinations and measurements – Switching time

1 Scope
This part of IEC 61300 describes a method to measure the switching time and related
performance parameters of a fibre optic spatial switch when the actuation energy is applied or
removed to change the state of the switch.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 61300-3-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-4: Examinations and measurements – Attenuation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
...