SIST EN 60835-1-3:2002/A1:2002
(Amendment)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
General Information
- Abstract
EN following parallel vote
- 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 60835-1-3:2002/A1:2002 defines standardized methods of measurement for equipment used in digital microwave radio transmission systems. This amendment focuses on measurements common to both terrestrial radio-relay systems and satellite earth stations, specifically addressing transmission characteristics. Developed by the Slovenski inštitut za standardizacijo (SIST) and harmonized with international IEC and European norms, this standard helps ensure uniformity and reliability in microwave radio communication equipment testing.
The standard is vital for operators, manufacturers, and engineers seeking to ensure performance and interoperability in digital microwave transmission systems. It outlines measurement techniques to assess key parameters such as delay differences between transmission paths-critical for both terrestrial microwave links and satellite ground stations.
Key Topics
- Transmission characteristics: Focused guidance on evaluating properties that impact signal integrity in digital microwave links.
- Delay difference measurements: Procedures to measure delay differences between two transmission paths, essential for slipless channel switching, diversity switching, and reliable combining in radio-relay and satellite systems.
- Equipment testing arrangements: Recommendations for test setups using radio link measuring sets or microwave link analyzers (MLA) for group-delay and absolute-delay measurements at intermediate frequencies (i.f.).
- Presentation of results: Methods for documenting measurement data - such as plots, CRT display photographs, or directly recorded values.
- Specification details: Requirements for equipment specifications, including maximum allowed delays, measurement interface points, and relevant measurement parameters.
Applications
SIST EN 60835-1-3:2002/A1:2002 is widely applicable in the field of digital microwave communications:
- Terrestrial radio-relay systems: Ensures consistent measurement and adjustment of transmission path delays, supporting high-availability, high-capacity link operations.
- Satellite earth stations: Critical for verifying absolute delay and delay differences, especially in frequency-hopping scenarios, where precise timing alignment is essential.
- Equipment design and factory testing: Manufacturers use these standardized measurement methods during production and acceptance testing to validate that products meet performance criteria.
- Operational maintenance: Network operators and field engineers utilize the methodology to maintain optimal switching between main and standby channels, minimizing errors and downtime.
- Diversity receiving systems: Supports reliability in systems using space, frequency, or hybrid diversity by defining how to measure and equalize signal path delays for consistent performance.
Related Standards
For comprehensive coverage and context, the following related standards are frequently referenced alongside SIST EN 60835-1-3:2002/A1:2002:
- IEC 60835-1-3:1992 - The core international standard outlining general methods for digital microwave equipment measurements.
- IEC 835-2-5:1993 - Describes baseband delay-difference measurement techniques for digital signal processing subsystems.
- EN 60835-1-3:1995/A1:1995 - The European equivalent of this standard and amendment.
- SIST EN 60835-2-7 - Details measurements related to diversity switching and combining equipment in digital terrestrial radio-relay systems.
These standards collectively help build reliable, standardized testing environments for digital microwave transmission systems, ensuring both interoperability and high service quality across the telecom sector.
Keywords: SIST EN 60835-1-3, digital microwave radio transmission, transmission characteristics, terrestrial radio-relay, satellite earth stations, delay difference measurement, group-delay, diversity switching, communications equipment testing, IEC standards, harmonized standards.
Relations
- Effective Date
- 21-Sep-2010
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Frequently Asked Questions
SIST EN 60835-1-3:2002/A1:2002 is a amendment 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 1: Measurements common to terrestrial radio-relay systems and satellite earth stations -- Section 3: Transmission characteristics". This standard covers: EN following parallel vote
EN following parallel vote
SIST EN 60835-1-3:2002/A1:2002 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 60835-1-3:2002/A1:2002 has the following relationships with other standards: It is inter standard links to 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 60835-1-3:2002/A1:2002 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 1: Measurements common to terrestrial radio-relay
systems and satellite earth stations - Section 3: Transmission characteristics -
Amendment A1 (IEC 60835-1-3:1992/A1:1995)
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
Meßverfahren für Geräte in digitalen Mikrowellen-Funkübertragungssystemen -- Teil 1:
Messungen an terrestrischen Richtfunksystemen und Satelliten-Erdfunkstellen --
Hauptabschnitt 3: Übertragungseigenschaften
Méthodes de mesure applicables au matériel utilisé pour les systèmes de transmission
numérique en hyperfréquence -- Partie 1: Mesures communes aux faisceaux hertziens
terrestres et aux stations terriennes de télécommunications par satellite -- Section 3:
Caractéristiques de transmission
Ta slovenski standard je istoveten z: EN 60835-1-3:1995/A1:1995
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
60835-1-3
STANDARD 1992
AMENDEMENT 1
AMENDMENT 1
1995-03
Amendement 1
Méthodes de mesure applicables au matériel
utilisé pour les systèmes de transmission
numérique en hyperfréquence -
Partie 1:
Mesures communes aux faisceaux hertziens
terrestres et aux stations terriennes de
télécommunications par satellite -
Section 3: Caractéristiques de transmission
Amendment 1
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
© CEI 1995 Droits de reproduction
réservés — Copyright — all rights reserved
Bureau Central de la Commission Electrotechnique Intern Genève, Suisse
ationale 3, rue de Varembé
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission PRICE CODE
IEC Mettcgyttapogwaa 3nearporextuwecnaa HoMNccun
0 Pour prix, voir catalogue en vigueur
•
For price, see current catalogue
835-1-3 Amend.l © IEC:1995 - 3 -
FOREWORD
This amendment has been prepared by sub-committee 12E: Radio relay and satellite
communication systems, of IEC technical committee 12: Radiocommunications.
The text of this amendment is based on the following documents:
DIS
Report on voting
12E(CO)167 12E/252/RVD
Full information on the voting for the approval of this amendment can be found in the
repo rt on voting indicated in the above table.
Page 3
CONTENTS
Add the following items:
6 Delay difference between two transmission paths 5
6.1 Definitions and general considerations 5
6.2 Method of measurement 5
6.3 Presentation of results 7
6.4 Details to be specified 9
Figures
8 Example of space diversity receiving system where delay difference
could be a problem 9
9 Arrangement for measuring delay difference between two branches of
a diversity system 11
10 Delay difference measurement: CRT display for a synchronized switch 11
11 Delay difference measurement: CRT display for a non-synchronized switch 11
12 Arrangement for measuring the switch-over characteristics as a function
of delay difference 13
13 Measurement of absolute delay of an i.f. component or sub-assembly 15
835-1-3 Amend.1 © IEC:1995 - 5 -
Page 23
Add the following new clause:
6 Delay difference between two transmission paths
6.1 Definitions and general considerations
ant parameter with
The delay difference between two transmission paths is an impo rt
respect to the availability of radio links for the following reasons:
- the delay difference should be kept within certain limits in order to achieve slipless
switching between any main and a stand-by channel;
- the delay difference greatly influences the performance of functions such as
diversity switching and combining between any two channels.
NOTE - This clause refers only to i.f. delay-difference measurements. Baseband delay-difference
measurements are dealt with in IEC 835-2-5: 1993, Methods of measurement for equipment used in
digital microwave radio transmission systems - Part 2: Measurements on terrestrial radio-relay systems -
Section 5: Digital signal processing sub-system.
In terrestrial systems, means are provided to equalize delay differences either manually or
automatically. In order to assess the performance of these methods, the limiting delay
values which can be equalized by such techniques shall be measured using simulated
transmission paths during factory tests.
Figure 8 shows an example of a space diversity receiving system.
Another parameter to be measured is the absolute delay of receiver components during
rtance in
production or acceptance testing. For example, this measurement is of great impo
satellite earth station systems where "frequency-hopping" is used. In this case, the delay
difference between switched transmission paths should be adjusted to minimum.
Such absolute delay equalization can be carried out at the i.f. inte rfaces of the concerned
radio link receivers using commercially available test equipment.
6.2 Method of measureme
...