SIST EN 60835-2-10:2002

SLOVENSKI STANDARD
01-oktober-2002
Methods of measurement for equipment used in digital microwave radio
transmission systems - Part 2: Measurements on terrestrial radio-relay systems -
Section 10: Overall system performance (IEC 60835-2-10:1992)
Methods of measurement for equipment used in digital microwave radio transmission
systems -- Part 2: Measurements on terrestrial radio-relay systems -- Section 10: Overall
system performance
Meßverfahren für Geräte in digitalen Mikrowellen-Funkübertragungssystemen -- Teil 2:
Messungen an terrestrischen Richtfunksystemen -- Hauptabschnitt 10: Leistungsdaten
des Gesamtsystems
Méthodes de mesure applicables au matériel utilisé pour les systèmes de transmission
numérique en hyperfréquence -- Partie 2: Mesures applicables aux faisceaux hertziens
terrestres -- Section 10: Performance globale du système
Ta slovenski standard je istoveten z: EN 60835-2-10:1993
ICS:
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME CEI
INTERNATIONALE IEC
INTERNATIONAL 60835-2-10
Première édition
STAN DARD
First edition
1992-12
Méthodes de mesure applicables au matériel
utilisé pour les systèmes de transmission
numérique en hyperfréquence
Partie 2:
Mesures applicables aux faisceaux hertziens
terrestres
Section 10: Performance globale du système
Methods of measurement for equipment used in
digital microwave radio transmission systems
Part 2:
Measurements on terrestrial radio-relay systems
Section 10: Overall system performance
© IEC 1992 Droits de reproduction réservés — Copyright - all rights reserved
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835-2-10 © IEC 3 – –
CONTENTS
Page
FOREWORD 5
INTRODUCTION 7
Clause
1 Scope 9
2 Normative references 9
(BER) 3 Bit-error ratio
3.1 Bit-error ratio versus receiver input level
3.2 Residual bit-error ratio at nominal receiver input level
3.3 Bit-error ratio degradation due to multi-channel interference
3.4 Bit-error ratio degradation due to multipath propagation and multi-channel
interference
4 Jitter
17 5 Acceptable input interruption
Verification of protection switching operation 6
Figures
835-2-10 © IEC – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
METHODS OF MEASUREMENT FOR EQUIPMENT USED IN
DIGITAL MICROWAVE RADIO TRANSMISSION SYSTEMS
Part 2: Measurements on terrestrial radio-relay systems
Section Ten — Overall system performance
FOREWORD
1) The IEC (International Electrotechnical Commission) is a world-wide organization for standardization
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international cooperation on all questions concerning standardization in the electrical and
electronic fields. To this end and in addition to other activities, the IEC publishes International Standards.
Their preparation is entrusted to technical committees; any IEC National Committee interested in
the subject dealt with may participate in this preparatory work. International, governmental and
non -governmental organizations liaising with the IEC also participate in this preparation. The IEC
collaborates closely with the International Organization for Standardization (ISO) in accordance with
conditions determined by agreement between the two organizations.
The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on
2)
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
They have the form of recommendations for international use published in the form of standards, technical
3)
reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
International Standard IEC 835-2-10 has been prepared by sub-committee 12E: Radio
relay and fixed satellite communications systems, of IEC technical committee 12:
Radiocommunications.
The text of this standard is based on the following documents:
DIS Report on Voting
12E(CO)145 12E(CO)156
Full information on the voting for the approval of this standard can be found in the repo rt
on voting indicated in the above table.

835-2-10 © IEC - 7 -
INTRODUCTION
In previous sections of IEC 835-2 measurement methods for parameters of the digital
radio-relay system have been discussed separately for each part of the system.
In addition to these tests, the overall performance of a complete simulated system should
be tested.
The tests cover the two basic parameters of digital transmission systems, bit-error ratio
and jitter, as well as the acceptable input interruption and verification of the protection
switching operation, which are all affected by the presence of more than one radio channel
and/or radio hop. The measurement of other additional parameters such as error-free
seconds, burst-error ratio, block-error ratio, which remain under consideration by other
international organizations, may also be required.

IEC
835-2-10 © - 9 -
METHODS OF MEASUREMENT FOR EQUIPMENT USED IN
DIGITAL MICROWAVE RADIO TRANSMISSION SYSTEMS
Part 2: Measurements on terrestrial radio-relay systems
Section Ten — Overall system performance
1 Scope
This section IEC 835-2 deals with measurements to be carried out during factory
acceptance tests and type approval tests on a complete simulated digital radio-relay
system, following tests on the individual parts of the system.
In the following, it will be stated for each parameter whether or not a multi-hop measure-
ment is required in the overall system performance test, depending on the cumulative or
non-cumulative property of that parameter. In this section, the emphasis is on the system
configuration. For methods of measurement, see under the appropriate future sections of
IEC 835-1 and IEC 835-2.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute
provisions of this section of IEC 835-2. At the time of publication, the editions indicated
were valid. All standards are subject to revision, and parties to agreements based on this
section of IEC 835-2 are encouraged to investigate the possibility of applying the most re-
cent editions of the standards indicated below. Members of IEC and ISO maintain regis-
ters of currently valid International Standards.
IEC 835-1-4: 1992, Methods of measurement for equipment used in digital microwave
radio transmission systems - Part 1: Measurements common to terrestrial radio-relay
systems and satellite earth stations - Section 4: Transmission performance.
IEC 835-2-4: Methods of measurement for equipment used in digital microwave radio
transmission systems - Part 2: Measurements on terrestrial radio-relay systems -
Section 4: Transmitter/receiver including modulator/demodulator. (In preparation)
IEC 835-2-6: Methods of measurement for equipment used in digital microwave radio
transmission systems - Part 2: Measurements on terrestrial radio-relay systems -
Section 6: Protective switching. (Under consideration)
IEC 835-2-8: Methods of measurement for equipment used in digital microwave radio
transmission systems - Part 2: Measurements on terrestrial radio-relay systems -
Section 8: Adaptive equaliser. (In preparation)
CCIR Report 930-2: Performance objectives for digital radio-relay systems - Recommen-
dations and reports of the CCIR, 1990, Annex to Volume IX - Part 1.

835-2-10 © IEC –11 –
3 Bit-error ratio (BER)
The method of measurement is given in IEC 835-1-4. The configuration of the tra
...