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IEC 61300-3-21
Edition 3.0 2019-09
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 3-21: Examinations and measurements – Switching time
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IEC 61300-3-21
Edition 3.0 2019-09
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 3-21: Examinations and measurements – Switching time
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-7436-1
– 2 – IEC 61300-3-21:2019 RLV © IEC 2019
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Apparatus . 7
4.1 General description . 7
4.2 Optical source (S) . 7
Excitation unit (E) .
4.3 Detector (D) . 7
4.4 Actuation energy supply (AS) . 8
4.5 Data acquisition system (DAS) . 8
4.6 Termination (T) . 8
4.7 Temporary joint (TJ) . 8
5 Procedure . 8
6 Details to be specified . 10
Bibliography . 11
Figure 1 – Measurement set-up using a 2-channel oscilloscope as DAS to measure a
single output port . 9
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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– 4 – IEC 61300-3-21:2019 RLV © IEC 2019
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.
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.
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 document using a
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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 is describes a method to measure the switching time and related
performance parameters of an optical 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 61300-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 1: General and guidance
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:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
latency time
elapsed time until the output power of a
specified output port reaches 10 % of its steady-state value of the output power from the time
the actuation energy is applied for a normally-on normally-off switch or is removed for a
normally-off normally-on switch
[SOURCE: IEC 60876-1:2012, 3.3.4.1, modified – “for a normally-on switch or is removed for
a normally-off switch” has been added.]
3.2
latency time
elapsed time until the output power of a
specified output port reaches 90 % of its steady-state value of the output power from the time
the actuation energy is removed for a normally-on normally-off switch or is applied for a
normally-off normally-on switch
Note 1 to entry: For a latch type optical switch, when switching from conducting state to isolated state, actuation
energy is applied or removed.
– 6 – IEC 61300-3-21:2019 RLV © IEC 2019
[SOURCE: IEC 60876-1:2012, 3.3.4.2, modified – “for a normally-on switch or is removed for
a normally-off switch” and Note 1 to entry have been added.]
3.3
rise time
elapsed time for the output power of the specified output port to rise from 10 % of the steady-
state conducting value to 90 % of the steady-state conducting value
[SOURCE: IEC 60876-1:2012, 3.3.5, modified – “conducting” has been added.]
3.4
fall time
elapsed time for the output power of the specified output port to fall from 90 % of the steady-
state conducting value to 10 % of the steady-state conducting value
[SOURCE: IEC 60876-1:2012, 3.3.6, modified – “conducting” has been added.]
3.5
bounce time
elapsed time unti
...