SIST EN 60835-2-8:2002/A1:2002
(Amendment)Methods of measurement for equipment used in digital microwave radio transmission systems -- Part 2: Measurements on terrestrial radio-relay systems -- Section 8: Adaptive equalizer
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 60835-2-8:2002/A1:2002 specifies standardized methods for measuring adaptive equalizers used in terrestrial digital microwave radio-relay systems. Developed by the Slovenski inštitut za standardizacijo (SIST), this standard is aligned with the IEC 60835-2-8:1993/A1:1996 amendment and supports harmonization of testing procedures in radio communications. It focuses on evaluating how adaptive equalizers in digital microwave transmission equipment respond to dynamic fading effects, especially under multipath propagation conditions. The document helps ensure consistent measurement results, supporting high reliability and performance across different manufacturers and system configurations.
Key Topics
- Dynamic Fading Effects: The standard defines methods to measure equipment performance under dynamic selective fading caused by multipath radio channels, which are not time-invariant.
- Notch Offset Frequency and Echo Amplitude: Measurement procedures involve sweeping the notch offset frequency and the relative echo amplitude to simulate real-world propagation changes.
- Bit Error Ratio (BER) Evaluation: The impact of dynamic channel events is assessed by monitoring the BER, identifying thresholds at which system performance degrades.
- Graphical Results Representation: Measurement outcomes are presented graphically, illustrating sensitivity to fading using coordinate systems for notch depth and offset frequency.
- Test Conditions Specification: The standard requires precise definitions for parameters including bit-rate, modulation format, outage signature mask, two-path delay, and type of adaptive equalizer.
Applications
The standardized measurement procedures outlined in SIST EN 60835-2-8:2002/A1:2002 are crucial for:
- Conformance Testing: Ensuring that digital microwave radio-relay equipment meets industry requirements for adaptive equalizer performance under real-world propagation conditions.
- Performance Benchmarking: Providing manufacturers and operators with a consistent framework for evaluating system robustness to multipath fading and dynamic channel conditions.
- Product Development: Guiding engineers in optimizing adaptive equalizer algorithms and system designs to improve resilience and efficiency in digital microwave communication links.
- Regulatory Compliance: Supporting market access by demonstrating compliance with European Norms (EN) within the radio-relay and satellite communications sector.
- Network Planning: Informing service providers and infrastructure planners on equipment capabilities, leading to more reliable terrestrial radio-relay networks.
Related Standards
SIST EN 60835-2-8:2002/A1:2002 is part of a comprehensive family of standards for digital microwave radio and terrestrial radio-relay systems. Key related standards include:
- IEC 60835-2-8:1993: Base international standard for measurements on terrestrial radio-relay systems - adaptive equalizer section.
- EN 60835-2-8:1993/A1:1996: European adaptation that ensures harmonized application across EU countries and supports interoperability.
- SIST EN 60835 Series: Covering general and specific requirements, methods of measurement, and testing procedures for radio-relay and fixed satellite communications systems.
- ICS 33.060.30: Classification for radio relay and fixed satellite communication systems standards.
- Related IEC and ETSI standards: Offering methodologies, procedures, and performance requirements for digital microwave and radio communication equipment.
By adhering to SIST EN 60835-2-8:2002/A1:2002, organizations benefit from internationally recognized best practices in the measurement of adaptive equalizers, enhancing the reliability and quality of digital microwave radio systems in terrestrial networks. Using standardized methods fosters interoperability, supports product certification, and increases network performance.
Relations
- Effective Date
- 21-Sep-2010
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Frequently Asked Questions
SIST EN 60835-2-8:2002/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 2: Measurements on terrestrial radio-relay systems -- Section 8: Adaptive equalizer". This standard covers: EN following parallel vote
EN following parallel vote
SIST EN 60835-2-8:2002/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 60835-2-8:2002/A1:2002 has the following relationships with other standards: It is inter standard links to SIST EN 60835-2-8:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 60835-2-8:2002/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 2: Measurements on terrestrial radio-relay systems -
Section 8: Adaptive equalizer - Amendment 1 (IEC 60835-2-8:1993/A1:1996)
Methods of measurement for equipment used in digital microwave radio transmission
systems -- Part 2: Measurements on terrestrial radio-relay systems -- Section 8: Adaptive
equalizer
Meßverfahren für Geräte in digitalen Mikrowellen-Funkübertragungssystemen -- Teil 2:
Messungen an terrestrischen Richtfunksystemen -- Hauptabschnitt 8: Adaptative
Entzerrer
Méthodes de mesure applicables au matériel utilisé pour les systèmes de transmission
numérique en hyperfréquence -- Partie 2: Mesures applicables aux faisceaux hertziens
terrestres -- Section 8: Egaliseur auto-adaptatif
Ta slovenski standard je istoveten z: EN 60835-2-8:1993/A1:1996
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 60835-2-8
STANDARD 1993
AMENDEMENT
AMENDMENT
1996-01
Amendement 1
Méthodes de mesure applicables au matériel
utilisé pour les systèmes de transmission
numérique en hyperfréquence
Partie 2:
Mesures applicables aux faisceaux hertziens
terrestres
Section 8: Egaliseur auto-adaptatif
Amendment 1
Methods of measurement for equipment used in
digital microwave radio transmission systems
Part 2:
Measurements on terrestrial radio-relay systems
Section 8: Adaptive equalizer
© CEI 1996 Droits de reproduction réservés — Copyright – all rights reserved
Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé
Genève, Suisse
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission PRICE CODE
IEC MetKgyHapopHa8 3neKrporexHwvecKaR HoMwccwa
Pour prix, voir catalogue en vigueur
•
For price, see current catalogue
835-2-8 Amend. 1 © IEC:1996 – 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:
FRIS Report on voting
12E/255/FDIS 12E/264/RV D
Full information on the voting for the approval of this amendment can be found in the report on
voting indicated in the above table.
Page 3
CONTENTS
Replace the existing title of clause 5 by the following:
5 Measurement of dynamic fading effects
5.1 Definition and general considerations
5.2 Method of measurement
5.2.1 Sweep of the notch offset frequency
5.2.2 Sweep of the relative echo amplitude
5.3 Presentation of results
5.3.1 Sweep of the notch offset frequency
5.3.2 Sweep of the relative echo amplitude
5.4 Details to be specified
Page 5
Add the titles of the following new figures:
10 Schematic for the measurement of dynamic fading effects
11a Illustration of sweep waveform for the measurement of the system sensitivity to
dynamic fading: sweep of the notch effect frequency
Graphical representation of the relative system sensitivity to dynamic fading: sweep of
i i b
the notch offset frequency
12a Illustration of sweep waveform for the measurement of the system sensitivity to
dynamic fading: sweep of the relative echo amplitude
12b Graphical representation of the relative system sensitivity to dynamic fading: sweep of
the relative echo amplitude
835-2-8 Amend. 1 © IEC:1996 – 5–
Page 23
Replace the title and text of clause 5 by the following new title and text:
5 Measurement of dynamic fading effects
5.1
Definition and general consideration
The radio channel, being subject to multipath propagation, is not time-invariant. Therefore it is
important to evaluate the ability of the system to cope with fast events (movements of notches)
in the channel by simulating rapid changes of propagation conditions.
The general approach in testing system sensitivity to dynamic selective fading is firstly to
sweep the notch offset frequency while slowly increasing the notch depth, and secondly to
sweep the relative echo amplitude while slowly decreasing the magnitude of the notch offset
frequency (see figure 10).
5.2 Method of measurement
The basic arrangement for this measurement is derived from that in the measurement of the
signature as shown in figure 3.
5.2.1 Sweep of the notch offset frequency
This method allows the behaviour of the system to be tested as the notch crosses the radio
channel.
The notch offset frequency is swept with a triangular waveform in order to maintain a constant
speed over the band under consideration (see figure 11a). The sweep width is chosen to be
large enough (e.g. twice the symbol rate) to include the outage signature (measured as in 3.2),
and to avoid the possible measurement errors due to the discontinuities at the edges of the
sweep range.
The measurement
...