EN 60835-2-7:1994

Methods of measurement for equipment used in digital microwave radio transmission systems - Part 2: Measurements on terrestrial radio-relay systems - Section 7: Diversity switching and combining equipment

For the purpose of this section, diversity equipment is assumed to consist of the circuits for switching and/or combining the diversity channels, excluding the channel equipment itself, i.e. transmitters, receivers, modulators, demodulators, etc. although these may also be involved in the measurements.

Meßverfahren für Geräte in digitalen Mikrowellen-Funkübertragungssystemen - Teil 2: Messungen an terrestrischen Richtfunksystemen - Hauptabschnitt 7: Geräteeinrichtungen für Schalt- und Kombinationsdiversity

Méthodes de mesure applicables au matériel utilisé pour les systèmes de transmission numérique en hyperfréquence - Partie 2: Mesures applicables aux faisceaux hertziens terrestres - Section 7: Equipement de diversité par commutation et combinaison

Dans le cadre de la présente section, l'équipement de diversité est constitué des circuits de commutation et/ou de combinaison des canaux en diversité, à l'exclusion de l'équipement proprement dit, c'est-à-dire des émetteurs, des récepteurs, des modulateurs, des démodulateurs, etc., bien que ces derniers puissent intervenir dans les mesures.

Methods of measurement for equipment used in digital microwave radio transmission systems - Part 2: Measurements on terrestrial radio-relay systems - Section 7: Diversity switching and combining equipment (IEC 60835-2-7:1994)

General Information

• Status: Withdrawn
• Publication Date: 30-Aug-1994
• Withdrawal Date: 30-Jun-1995
• ICS: 33.060.30 - Radio relay and fixed satellite communications systems
• Technical Committee: CLC/SR 102 - Equipment used in radio communications for mobile services and satellite communication systems
• Drafting Committee: IEC/TC 102 - IEC_TC_102
• Parallel Committee: IEC/TC 102 - IEC_TC_102
• Ref Project: SIST EN 60835-2-7:2002 - Methods of measurement for equipment used in digital microwave radio transmission systems -- Part 2: Measurements on terrestrial radio-relay systems -- Section 7: Diversity switching and combining equipment

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60835-2-7:2002
01-oktober-2002
Methods of measurement for equipment used in digital microwave radio
transmission systems - Part 2: Measurements on terrestrial radio-relay systems -
Section 7: Diversity switching and combining equipment (IEC 60835-2-7:1994)
Methods of measurement for equipment used in digital microwave radio transmission
systems -- Part 2: Measurements on terrestrial radio-relay systems -- Section 7: Diversity
switching and combining equipment
Meßverfahren für Geräte in digitalen Mikrowellen-Funkübertragungssystemen -- Teil 2:
Messungen an terrestrischen Richtfunksystemen -- Hauptabschnitt 7:
Geräteeinrichtungen für Schalt- und Kombinationsdiversity
Méthodes de mesure applicables au matériel utilisé pour les systèmes de transmission
numérique en hyperfréquence -- Partie 2: Mesures applicables aux faisceaux hertziens
terrestres -- Section 7: Equipement de diversité par commutation et combinaison
Ta slovenski standard je istoveten z: EN 60835-2-7:1994
ICS:
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
SIST EN 60835-2-7:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60835-2-7:2002

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SIST EN 60835-2-7:2002

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SIST EN 60835-2-7:2002
NORME CEI
INTERNATIONALE IEC
60835-2-7
INTERNATIONAL
Première édition
STAN DARD
First edition
1994-07
Méthodes de mesure applicables au matériel
utilisé pour les systèmes de transmission
numérique en hyperfréquence
Partie 2:
Mesures applicables aux faisceaux hertziens
terrestres
Section 7: Equipement de diversité par
commutation et combinaison
Methods of measurement for equipment used in
digital microwave radio transmission systems
Part 2:
Measurements on terrestrial radio-relay systems
Section 7: Diversity switching and
combining equipment
© IEC 1994 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
utilisée quelque forme
sous que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique,
y compris la photo- including photocopying and microfilm, without permission in
et
copie les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
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Pour pri voir
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For price, see current catalogue

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SIST EN 60835-2-7:2002
835-2-7 © IEC:1994 – 3 –
CONTENTS
Page
FOREWORD 7
INTRODUCTION 9
Clause
11
1 Scope
11
2 Normative references
13
3 Switching diversity
13
3.1 General considerations
13
3.2 Isolation between the ports of a diversity switch
13
3.3 Delay difference between diversity channels
15
3.4 Switching due to the BER alarm
17
3.5 Synchronization time
19
4 Combining diversity
19
4.1 General considerations
21
4.2 BER/receiver input level characteristic
23
4.3 In-band amplitude dispersion characteristic
25
4.4 BER/phase difference characteristic
25
4.5 Fading signatures
Figures
29
1 Base-band switching equipment used in diversity systems
2 Arrangement for measuring the tolerable delay difference by a variable
31
ri. delay line
3 Arrangement for measuring the tolerable delay difference by a variable
33
base-band delay line
4 Arrangement for measuring base-band switching equipment functions
BER 35
due to
37
5 Arrangement for measuring the synchronization time
39
6 Simplified block diagrams of diversity combining equipment
41
7 Arrangements for measuring trie BER/receiver input level characteristic
8 Example of a BER/receiver input level characteristic 43

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SIST EN 60835-2-7:2002
835-2-7 © I EC:1994 - 5 -
Figures Pages
9
9 Arrangement for measuring in-band amplitude dispersion characteristic 45
10 In-band amplitude dispersion characteristic 45
11 Arrangement for measuring the
BER/phase difference characteristic 47
12 Arrangements for measuring the signature of a combining system 49
13 Example of signature curves as a function of level difference AP
(positive delay)
...