SIST EN 60835-3-4:2002
(Main)Methods of measurement for equipment used in digital microwave radio transmission systems -- Part 3: Measurements on satellite earth stations -- Section 4: Low noise amplifier
General Information
- Abstract
Describes methods of measurement on low-noise amplifiers used in satellite earth stations.
- 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 60835-3-4:2002 defines standardized methods for measuring the performance of low-noise amplifiers (LNAs) used in satellite earth station equipment operating within digital microwave radio transmission systems. Prepared in alignment with IEC 60835-3-4:1993, this standard helps ensure accuracy, repeatability, and comparability of LNA measurement results across international satellite communications infrastructure.
LNAs play a crucial role in amplifying weak signals received from satellites, enabling reliable communication in radio relay and fixed satellite communication systems. Consistent measurement of their performance parameters supports quality assurance, system interoperability, and regulatory compliance.
Key Topics
SIST EN 60835-3-4:2002 covers essential measurement methods for low-noise amplifiers, including:
- Noise Temperature: Procedures for measuring the noise temperature of LNAs, considering contributions from associated sub-systems.
- Gain and Gain Stability: Determination of gain values and monitoring of short-term and long-term gain stability over specified periods.
- Amplitude and Group Delay/Frequency Characteristics: Evaluation of how gain amplitude and group delay vary with frequency.
- Input/Output Level Characteristics: Measurement of output as a function of input signal to analyze gain compression and operating range.
- Input and Output Return Loss: Assessment of signal reflection parameters at LNA ports to ensure impedance matching.
- Effects of Out-of-Band Signals: Evaluation of how signals outside the desired frequency band impact gain compression and noise temperature.
- Intermodulation Products: Methods to measure unwanted signal products generated by the amplifier due to nonlinearities.
Each test references appropriate sections in IEC 835-1-2 and IEC 835-1-3 for base procedures and ensures reliable characterization within minimum system disturbance.
Applications
SIST EN 60835-3-4:2002 is directly applicable to organizations involved in the design, testing, integration, and operation of satellite earth stations, particularly:
- Telecommunications providers deploying or upgrading satellite earth stations benefit from standardized LNA measurement, leading to improved signal reliability and system performance.
- Manufacturers and test laboratories use consistent test methods for product development, quality control, and type approval.
- System integrators
- Verify performance claims from equipment suppliers.
- Ensure that LNAs meet required technical and regulatory specifications.
- Regulatory authorities and accreditation bodies reference these standardized methods to ensure industry compliance and promote interoperability across national and international networks.
Documented test procedures support the reliable establishment of performance baselines, troubleshooting of system anomalies, and validation of upgraded LNA technologies.
Related Standards
SIST EN 60835-3-4:2002 is part of a broader series for digital microwave radio transmission systems. Related international and European standards include:
- EN 60835-1-2: Measurements common to terrestrial radio-relay systems and satellite earth stations - Basic characteristics
- EN 60835-1-3: Measurements common to terrestrial radio-relay systems and satellite earth stations - Transmission characteristics
- EN 60835-3: Measurements on satellite earth stations (series level)
- IEC 60835-3-4: International equivalent for LNA measurement procedures
- ICS 33.060.30: Classification for radio relay and fixed satellite communications systems
Consult these standards for comprehensive guidance on measurement techniques and system-level requirements for satellite communications equipment.
Keywords: low-noise amplifier, LNA measurement, satellite earth station, digital microwave radio, SIST EN 60835-3-4:2002, IEC 60835-3-4, gain stability, noise temperature, return loss, intermodulation, radio relay systems, satellite communications standards.
Relations
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
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Frequently Asked Questions
SIST EN 60835-3-4:2002 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 3: Measurements on satellite earth stations -- Section 4: Low noise amplifier". This standard covers: Describes methods of measurement on low-noise amplifiers used in satellite earth stations.
Describes methods of measurement on low-noise amplifiers used in satellite earth stations.
SIST EN 60835-3-4:2002 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 60835-3-4:2002 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, SIST EN 60835-3-2:2002, SIST EN 60835-3-5:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 60835-3-4:2002 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 3: Measurements on satellite earth stations - Section
4: Low noise amplifier (IEC 60835-3-4:1993)
Methods of measurement for equipment used in digital microwave radio transmission
systems -- Part 3: Measurements on satellite earth stations -- Section 4: Low noise
amplifier
Meßverfahren für Geräte in digitalen Mikrowellen-Funkübertragungssystemen -- Teil 3:
Messungen an Satelliten-Erdfunkstellen -- Hauptabschnitt 4: Rauscharme Verstärker
Méthodes de mesure applicables au matériel utilisé pour les systèmes de transmission
numérique en hyperfréquence -- Partie 3: Mesures applicables aux stations terriennes de
télécommunications par satellite -- Section 4: Amplificateur à faible bruit
Ta slovenski standard je istoveten z: EN 60835-3-4:1995
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
60835-3-4
INTERNATIONAL
Première édition
STANDARD
First edition
1993-04
Méthodes de mesure applicables au matériel
utilisé pour les systèmes de transmission
numérique en hyperfréquence
Partie 3:
Mesures applicables aux stations terriennes
de
télécommunications par satellite
Section 4: Amplificateur à faible bruit
Methods of measurement for equipment used in
digital microwave radio transmission systems
Part 3:
Measurements on satellite earth stations
Section 4: Low noise amplifier
© IEC 1993 Droits de reproduction réservés — Copyright - all rights reserved
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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.
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835-3-4 © I EC: 1993
–3-
CONTENTS
Page
FOREWORD 5
INTRODUCTION 7
Clause
1 Scope 9
2 Normative references 9
3 Noise temperature 9
4 Gain and gain stability 9
5 Amplitude and group delay/frequency characteristics 11
6 Input/output level characteristics 11
7 Input and output return loss 11
8 Effect of out-of-band signals upon gain compression
and noise temperature 11
9 Intermodulation products 13
835-3-4 © I EC: 1993 - 5 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
METHODS OF MEASUREMENT FOR EQUIPMENT
USED IN DIGITAL MICROWAVE RADIO
TRANSMISSION SYSTEMS
Part 3: Measurements on satellite earth stations
Section 4: Low noise amplifier
FOREWORD
1)
The IEC (International Electrotechnical Commission) is a worldwide 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.
2) 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.
3)
They have the form of recommendations for international use published in the form of standards, technical
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 835-3-4 has been prepared by sub-committee 12E: Radio-relay
and fixed satellite communications systems,
...