Optical fibres - Part 1-60: Measurement methods and test procedures - Beat length

IEC 60793-1-60:2017 defines test methods for both the phase beat length, and the group beat length. These two parameters are defined differently, and will give different results depending on the type of polarization-maintaining (PM) fibre. The phase beat length is the relevant parameter for the fibres ability to maintain a high extinction ratio. This is described in more details in Annexes A and B.

Fibres optiques - Partie 1-60: Méthodes de mesure et procédures d'essai - Longueur de battement

IEC 60793-1-60:2017 définit des méthodes d’essai tant pour la longueur de battement de phase que pour la longueur de battement de groupe. Ces deux paramètres sont définis de manière différente et produisent des résultats différents selon le type de fibre à maintien de polarisation (PM – polarization-maintaining). La longueur de battement de phase est le paramètre approprié de la capacité des fibres à maintenir un rapport d’extinction élevé. Les Annexes A et B décrivent ces éléments de manière plus détaillée.

Electromagnetic compatibility (EMC) - Part 3: Limits - Section 8: Signalling on low-voltage electrical installations - Emission levels, frequency bands and electromagnetic disturbance levels

General Information

Status
Published
Publication Date
06-Feb-2017
Technical Committee
Current Stage
PPUB - Publication issued
Start Date
16-Feb-2017
Completion Date
07-Feb-2017

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SLOVENSKI SIST IEC 61000-3-8:2004

STANDARD
april 2004
Electromagnetic compatibility (EMC) - Part 3: Limits - Section 8: Signalling on low-
voltage electrical installations - Emission levels, frequency bands and
electromagnetic disturbance levels
ICS 33.100.10 Referenčna številka
SIST IEC 61000-3-8:2004(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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NORME
CEI
INTERNATIONALE
IEC
61000-3-8
INTERNATIONAL
Première édition
STANDARD
First edition
1997-08
Compatibilité électromagnétique (CEM) –
Partie 3:
Limites –
Section 8: Transmission de signaux dans
les installations électriques à basse tension –
Niveaux d’émission, bandes de fréquences
et niveaux de perturbations électromagnétiques
Electromagnetic compatibility (EMC) –
Part 3:
Limits –
Section 8: Signalling on low-voltage electrical
installations – Emission levels, frequency bands
and electromagnetic disturbance levels
 IEC 1997 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
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For price, see current catalogue

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61000-3-8 © IEC:1997 – 3 –
CONTENTS
Page
FOREWORD . 5
INTRODUCTION. 7
Clause
1 Scope. 9
2 Normative references. 9
3 General. 11
4 Definitions. 13
5 Frequency bands (ITU region 1 only). 13
6 Transmitter output signal voltage .13
7 Disturbance and interference limits. 17
8 Test conditions. 21
9 Inadvertent operation. 23
Tables
1 Limits of mains terminal interference voltage in the frequency range 0,15 MHz to 30 MHz . 19
2 Limits of radiated interference field strength in the frequency range 30 MHz
to 1 000 MHz at a test distance of 10 m. 19
3 Limits of disturbance . 21
Figures
1 Measurement of output levels in the band 3 kHz to 9 kHz (differential mode) . 25
2 Measurement of output levels in the band 3 kHz to 9 kHz (common mode) . 27
3 Measurement of spectral bandwidth . 29
4 Measuring arrangement for equipment whose operation is dependent on the
transmitter being in circuit . 31
5 Artificial mains network 3 kHz to 9 kHz . 33
6 Idealized equivalent circuit model – DUT port impedance . 35
Annexes
A Measurement of output signal levels and conducted interference levels
(3 kHz to 30 MHz) .
...

IEC 60793-1-60
®

Edition 1.0 2017-02
INTERNATIONAL
STANDARD

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Optical fibres –
Part 1-60: Measurement methods and test procedures – Beat length

IEC 60793-1-60:2017-02(en)

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IEC 60793-1-60

®


Edition 1.0 2017-02




INTERNATIONAL



STANDARD








colour

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Optical fibres –

Part 1-60: Measurement methods and test procedures – Beat length



























INTERNATIONAL

ELECTROTECHNICAL


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ICS 33.180.10 ISBN 978-2-8322-3865-3



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® Registered trademark of the International Electrotechnical Commission

---------------------- Page: 3 ----------------------
– 2 – IEC 60793-1-60:2017 © IEC 2017
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Testing conditions . 6
5 Reference test method . 6
6 Specimen . 6
7 Test methods . 6
7.1 Phase beat length measurement methods . 6
7.1.1 General . 6
7.1.
...

IEC 60793-1-60
®

Edition 1.0 2017-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside


Optical fibres –
Part 1-60: Measurement methods and test procedures – Beat length

Fibres optiques –
Partie 1-60: Méthodes de mesure et procédures d’essai – Longueur de battement

IEC 60793-1-60:2017-02(en-fr)

---------------------- Page: 1 ----------------------
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