SIST EN 60835-2-3:2002
(Main)Methods of measurement for equipment used in digital microwave radio transmission systems -- Part 2: Measurements on terrestrial radio-relay systems -- Section 3: RF branching networks
General Information
- Abstract
Deals with methods of measurement for branching networks used in digital radio-relay systems.
- Status
- Published
- Publication Date
- 30-Sep-2002
- Technical Committee
- OMS - Equipment used in mobile services and satelite comunication systems
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Oct-2002
- Due Date
- 01-Oct-2002
- Completion Date
- 01-Oct-2002
Overview
SIST EN 60835-2-3:2002 specifies standardized methods for measuring performance characteristics of RF branching networks used in digital microwave radio transmission systems, with a particular focus on terrestrial radio-relay systems. Developed by the Slovenian Institute for Standardization (SIST) and aligned with IEC 60835-2-3, this standard establishes procedures to ensure reliable and consistent evaluation of RF branching assemblies, which play a critical role in connecting multiple transmitters and receivers to a common antenna system.
Key Topics
The standard addresses a variety of important measurement parameters for RF branching networks in digital radio-relay infrastructures, including:
- Return Loss: Determining how much signal is reflected back toward the source, measured as a function of frequency within each port’s pass-band.
- Insertion Loss: Evaluating the signal attenuation introduced by the branching network between transmitters/receivers and the antenna system, at relevant frequencies.
- Amplitude/Frequency and Group-Delay/Frequency Characteristics: Analyzing how signal amplitude and propagation delay vary across the operating frequency range.
- Isolation: Measuring unwanted signal leakage between different transmit and receive ports, which is essential for minimizing crosstalk and interference.
- Multi-Carrier Intermodulation Products: Assessing the creation of unwanted intermodulation signals when multiple transmitters operate in the same branching network, particularly focusing on non-linearities that may result in interference within the receive bands.
These measurement procedures ensure RF branching networks meet quality, performance, and interference mitigation requirements critical for digital microwave communications.
Applications
The guidelines in SIST EN 60835-2-3:2002 are widely applied in the design, manufacturing, and verification of equipment used in:
- Terrestrial Digital Microwave Radio Networks: Ensuring robust signal transmission among multiple radio transmitters and receivers fed through a shared antenna system.
- Radio-Relay Systems: Supporting high-reliability point-to-point and point-to-multipoint communications in telecom infrastructure.
- RF Equipment Testing and Type Approval: Providing consistent methodologies for laboratory testing, equipment validation, and conformity assessment.
- Troubleshooting and Performance Optimization: Assisting engineers in diagnosing performance issues related to signal loss, isolation, or intermodulation interference within radio-relay branching networks.
Organizations involved in the deployment or maintenance of digital microwave links utilize this standard to guarantee optimal system operation, reduce risk of interference, and streamline network expansion or upgrades.
Related Standards
SIST EN 60835-2-3:2002 is closely related to other standards that define measurement procedures and performance criteria for digital microwave radio transmission equipment:
- IEC 60835-1-2: Methods of measurement for equipment used in digital microwave radio transmission systems – Basic characteristics.
- IEC 60835-1-3: Methods of measurement – Transmission characteristics for both terrestrial radio-relay systems and satellite earth stations.
- EN 60835-2-3: European adoption of the IEC standard for RF branching network measurements.
By following SIST EN 60835-2-3:2002 in conjunction with these related standards, professionals across the telecommunications sector foster reliable, interference-free digital radio-relay systems, ensuring high-quality wireless communication services.
Keywords: RF branching networks, digital microwave radio transmission systems, radio-relay systems, measurement methods, insertion loss, return loss, intermodulation, isolation, SIST EN 60835-2-3, IEC 60835-2-3, telecommunications standards, microwave equipment testing.
Relations
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
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Frequently Asked Questions
SIST EN 60835-2-3:2002 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Methods of measurement for equipment used in digital microwave radio transmission systems -- Part 2: Measurements on terrestrial radio-relay systems -- Section 3: RF branching networks". This standard covers: Deals with methods of measurement for branching networks used in digital radio-relay systems.
Deals with methods of measurement for branching networks used in digital radio-relay systems.
SIST EN 60835-2-3:2002 is classified under the following ICS (International Classification for Standards) categories: 33.060.30 - Radio relay and fixed satellite communications systems. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 60835-2-3:2002 has the following relationships with other standards: It is inter standard links to SIST EN 60835-1-2:2002, SIST EN 60835-1-3:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 60835-2-3:2002 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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 3: RF branching networks (IEC 60835-2-3:1992)
Methods of measurement for equipment used in digital microwave radio transmission
systems -- Part 2: Measurements on terrestrial radio-relay systems -- Section 3: RF
branching networks
Meßverfahren für Geräte in digitalen Mikrowellen-Funkübertragungssystemen -- Teil 2:
Messungen an terrestrischen Richtfunksystemen -- Hauptabschnitt 3: RF-
Verzweigungsnetzwerke
Méthodes de mesure applicables au matériel utilisé pour les systèmes de transmission
numérique en hyperfréquence -- Partie 2: Mesures applicables aux faisceaux hertziens
terrestres -- Section 3: Dispositifs de branchement aux fréquences radioélectriques
Ta slovenski standard je istoveten z: EN 60835-2-3:1993
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
60835-2-3
INTERNATIONAL
Première édition
STAN
DARD
First edition
1992-04
Méthodes de mesure applicables au matériel
utilisé pour les systèmes de transmission
numérique en hyperfréquence
Partie 2:
Mesures applicables aux faisceaux hertziens
terrestres
Section 3: Dispositifs de branchement
aux fréquences radioélectriques
Methods of measurement for equipment used in
digital microwave radio transmission systems
Part 2:
Measurements on terrestrial radio-relay systems
Section 3: RF branching networks
© IEC 1992 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 sous quelque
forme 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
copie et les
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
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Commission Electrotechnique Internationale
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Pour prix, voir catalogue en vigueur
• • For price, see current catalogue
835-2-3 © IEC — 3 —
CONTENTS
Page
FOREWORD 5
Clause
1 Scope 7
Definition and general considerations 7
Return-loss/frequency characteristic 3
4 In-band characteristics 9
4.1 Insertion loss 9
4.2 Amplitude/frequency characteristic 9
4.3 Group-delay/frequency characteristic
11 5 Isolation
Multi-carrier intermodulation products 11
6.1 Definition and general considerations
6.2 Method of measurement
6.3 Presentation of results
6.4 Details to be specified
Figure
835-2-3 © 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 3: RF branching networks
FOREWORD
1) The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on
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.
2) They have the form of recommendations for international use and they are accepted by the National
Committees in that sense.
3) In order to promote international unification, the IEC expresses the wish that all National Committees
should adopt the text of the IEC recommendation for their national rules in so far as national conditions will
permit. Any divergence between the IEC recommendation and the corresponding national rules should, as
far as possible, be clearly indicated in the latter.
This section of the International Standard IEC 835-2 has been prepared by Sub-
Committeel2E: Radio relay and fixed satellite communications systems, of IEC Technical
Committee No. 12: Radiocommunications.
The text of this section is based on the following documents:
DIS Report on Voting
12E(CO)129 12E(CO)134
Full information on the voting for the approval of this section can be found in the Voting
Report indicated in the above table.
The following IEC publications are quoted in this section:
IEC 835-1-2: 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 2: Basic characteristics.
IEC 835-1-3: 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 3: Transmission characteristics.
835-2-3 © IEC – 7 –
METHODS OF MEASUREMENT FOR EQUIPMENT
USED IN DIGITAL MICROWAVE RADIO TRANSMISSION SYSTEMS
Part 2: Measurements on terrestrial radio-relay systems
Section 3: RF
branching networks
1 Scope
This section of IEC 835-2 deals with methods of measurement for branching networks
used in digital radio-relay systems.
2 Definition and general considerations
A branching network is a multi-port network which provides the means to connect several
transmitters and receivers, operating at different frequencies, to a common antenna
feeder. An example of a branching network is shown in figure 1, where it will be seen that
the network is made up of a transmit branching assembly, a receive branching assembly,
and a transmit-receive coupler. The paths from T
n to C and from C to R n have pass-
band and stop-band characteristics, and usually need unidirec
...