SIST ETS 300 385:1998
(Main)Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for digital fixed radio links and ancillary equipment with data rates at around 2 Mbit/s and above
- Abstract
Covers the EMC requirements for fixed link equipment. The ETS may be used to demonstrate compliance with the requirements of the EMC Directive 89/336/EEC.
- Status
- Published
- Publication Date
- 30-Sep-1998
- Technical Committee
- RES - Radio equipment and systems
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Oct-1998
- Due Date
- 01-Oct-1998
- Completion Date
- 01-Oct-1998
SIST ETS 300 385:1998 is the Slovenian adoption of ETSI ETS 300 385 Edition 1. It specifies EMC tests, limits and minimum performance criteria for digital fixed radio links and ancillary equipment with data rates at around 2 Mbit/s and above, for fixed point-to-point systems in the 1 GHz to 60 GHz range. It is intended for manufacturers, test laboratories and assessors who need a common basis for EMC evaluation, including use as evidence for the EMC Directive 89/336/EEC.
What does SIST ETS 300 385:1998 specify?
SIST ETS 300 385:1998 sets the EMC assessment for digital fixed radio links and associated ancillary equipment. It covers the radio equipment used in fixed link systems, the test methods and limits for emissions, and the immunity tests and performance criteria used to judge operation during and after EMC stress.
The scope includes the processing and protection switch, (de)modulator, transmitter, receiver, RF filters, branching networks and feeders. Multiplexing and de-multiplexing are included when they form part of the transmitter, receiver or transceiver. Technical specifications for the antenna port are handled by related product standards for spectrum use.
The EMC levels are aimed at residential, commercial, light industrial and telecommunications centre environments. The standard also notes that persistent nearby sources of interference, such as radar or broadcast sites, may require special protection.
The document is organized as follows:
- Clause 1 - Scope
- Clause 2 - Normative references
- Clause 3 - Definitions
- Clause 4 - General test conditions
- Clause 5 - Performance assessment
- Clause 6 - Performance criteria
- Clause 7 - Applicability overview tables
- Clause 8 - Test methods and limits for emission tests
- Clause 9 - Test methods and levels for immunity tests
Compliance with this ETS does not by itself show compliance with licensing requirements or with safety requirements.
What are the key requirements of SIST ETS 300 385:1998?
SIST ETS 300 385:1998 is built around a representative test setup, a declared performance target, and a fixed set of emission and immunity tests. In practice, the standard asks the manufacturer or test house to define the equipment configuration clearly, then prove that the equipment keeps its essential functions or recovers after each EMC stress.
Test configuration and documentation
Clause 4 requires testing as close as possible to normal intended use. The equipment must be tested within the manufacturer’s declared humidity, temperature and supply-voltage range, with ports connected or terminated in a way that reflects real operation.
If the equipment includes extra chain elements beyond the minimum transmitter, receiver or transceiver blocks, those added elements also have to meet the ETS. The test report has to record the configuration, mode of operation and test conditions, so the result can be traced later.
How performance is judged
Clause 5 requires the manufacturer to supply the functions to be checked, the intended use, any ancillary equipment used for testing, the control functions and stored data needed for normal operation, and a complete port list. This matters because the pass/fail decision depends on what the equipment is supposed to do and what must still work after EMC stress.
The standard separates equipment into grade A and grade B. Grade B is the category for equipment with a harmonised grade of service, linked to ITU-T Recommendations G.821 and G.826. If the equipment cannot establish a communications link, the manufacturer has to define a practical way to judge acceptable performance or degradation.
Ancillary equipment can be assessed in three ways: on its own, to another appropriate harmonised EMC standard, or together with a receiver, transmitter or transceiver. That gives a buyer or lab a clear route for add-on equipment used with several radio products.
Performance criteria
Clause 6 uses communication-link establishment, maintenance and recovered-signal assessment as the main performance criteria. The table sets minimum criteria for several bit-rate classes, and the key distinction is that grade B is stricter during the test while grade A allows no requirement during the disturbance but expects normal operation after it.
For equipment with an inherent background bit error rate, the standard allows the criteria to be adapted by the manufacturer, and the test may be repeated up to three times to separate EMC effects from normal background errors. If the equipment is specialised and the table is not suitable, the manufacturer can propose a substitute performance specification, but it has to provide the same degree of immunity protection.
Emission tests
Clause 8 covers enclosure emissions and conducted emissions on dc and ac power ports. The enclosure test looks at spurious emissions from the housing, while the power-port tests look at internal noise being carried back onto the supply lines.
The dc power-port test applies where dc cables are longer than 3 m, and it uses the appropriate line impedance stabilization network arrangement. The ac mains test applies to mains-powered equipment. For both, the limits are taken from EN 55022, with alternative telecommunication-centre limits available through ETS 300 386-1.
Immunity tests
Clause 9 covers the main immunity phenomena:
- radio frequency electromagnetic field
- electrostatic discharge
- fast transients on common mode paths
- radio frequency common mode disturbance
- voltage dips and interruptions
- surges
Some tests apply only to ports with longer cables, so the standard ties the test set to the actual installation. For example, fast transients are applied on signal, control and dc power ports if the cables may be longer than 3 m, and RF common mode testing applies to ports with cables longer than 1 m.
For link-capable equipment, the link must be established at the start of the immunity test and maintained during it. For voltage interruptions on ac mains, the treatment depends on whether the equipment has battery backup and whether it is grade A or grade B. If an interruption causes loss of link or user data, that must be stated in the test report, product description and user documentation.
What terms does SIST ETS 300 385:1998 define?
The standard gives short definitions for the terms that matter in EMC testing:
- Ancillary equipment - equipment used with a receiver, transmitter or transceiver to add control or operating features, but which cannot work as a stand-alone user device.
- Continuous phenomena - a disturbance whose effect cannot be separated into distinct events.
- Port - a defined interface between the equipment and the external electromagnetic environment.
- Enclosure port - the physical boundary where electromagnetic fields may radiate onto or from the apparatus.
- Radio communications equipment - equipment that includes one or more transmitters and/or receivers, used in a fixed application and sometimes transportable for provisional links.
- Transient phenomena - a disturbance or quantity that changes between steady states over a short time.
Who uses SIST ETS 300 385:1998?
SIST ETS 300 385:1998 is used by manufacturers of digital fixed radio links, transceiver equipment and ancillary equipment when they design products and prepare EMC evidence. It is also used by test laboratories and test houses that set up the equipment, run emission and immunity tests, and write the test report.
Quality and regulatory staff use it to check that the declared environment, port list, performance criteria and recovery behaviour are documented. Assessors use it to decide whether the equipment’s EMC behaviour matches the intended functions and the stated grade.
Which standards are used with SIST ETS 300 385:1998?
| Normative reference | What it contributes |
|---|---|
| EN 50081-1 | Generic emission standard for residential, commercial and light industry; part of the EMC basis of the ETS. |
| EN 50082-1 | Generic immunity standard for residential, commercial and light industry; part of the EMC basis of the ETS. |
| EN 55022 | Emission test methods and limits for enclosure and power-port tests. |
| CISPR 16-1 | Measurement apparatus and methods for radio disturbance and immunity testing. |
| ENV 50140 | Radiated RF electromagnetic-field immunity test method. |
| EN 60801-2 | Electrostatic discharge immunity test method. |
| IEC 801-4 | Electrical fast transient/burst immunity test method. |
| ENV 50141 | Conducted RF immunity test by current clamp injection. |
| EN 61000-4-11 | Voltage dips, short interruptions and voltage variations immunity test method. |
| ENV 50142 | Surge immunity test method. |
| ITU-T G.821 | Error performance reference for international digital connections. |
| ITU-T G.826 | Error performance objectives for constant bit rate digital paths. |
| IEC 50 (161) | EMC vocabulary used for defined terms. |
| ETS 300 386-1 | Telecommunications-centre EMC environment and alternative limits. |
What does the SIST ETS 300 385:1998 document contain?
The document contains the test framework, the emission and immunity methods, and the performance criteria used to judge digital fixed radio links and ancillary equipment. Figures 1 to 6 show the transmitter, receiver and transceiver configurations used to define measurement points and wanted-signal arrangements.
Tables 1 to 9 set out the performance criteria, applicability overview, and the emission and immunity limits or levels. Clause 4 explains the test conditions and how test signals are arranged at transmitter and receiver ports, while Clauses 8 and 9 provide the test methods for emissions and immunity.
Get Certified
Connect with accredited certification bodies for this standard
ANCE
Mexican certification and testing association.
Intertek Slovenia
Intertek testing, inspection, and certification services in Slovenia.
LNE (Laboratoire National de Métrologie et d'Essais)
French national laboratory for metrology and testing.
Sponsored listings
Frequently Asked Questions
SIST ETS 300 385:1998 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for digital fixed radio links and ancillary equipment with data rates at around 2 Mbit/s and above". This standard covers: Covers the EMC requirements for fixed link equipment. The ETS may be used to demonstrate compliance with the requirements of the EMC Directive 89/336/EEC.
Covers the EMC requirements for fixed link equipment. The ETS may be used to demonstrate compliance with the requirements of the EMC Directive 89/336/EEC.
SIST ETS 300 385:1998 is classified under the following ICS (International Classification for Standards) categories: 33.060.01 - Radiocommunications in general; 33.100.01 - Electromagnetic compatibility in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ETS 300 385:1998 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-1998
5DGLMVNDRSUHPDLQVLVWHPL 5(6 6WDQGDUGHOHNWURPDJQHWQH]GUXåOMLYRVWL (0&
GLJLWDOQLKILNVQLKUDGLMVNLKSRYH]DYLQSRPRåQHRSUHPHSULKLWURVWLSRGDWNRYRNROL
0ELWVLQYHþ
Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for
digital fixed radio links and ancillary equipment with data rates at around 2 Mbit/s and
above
Ta slovenski standard je istoveten z: ETS 300 385 Edition 1
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN ETS 300 385
TELECOMMUNICATION February 1996
STANDARD
Source: ETSI TC-RES Reference: DE/RES-09008
ICS: 33.100 33.060.20
Digital, EMC, radio, testing
Key words:
Radio Equipment and Systems (RES);
ElectroMagnetic Compatibility (EMC) standard
for digital fixed radio links and ancillary equipment
with data rates at around 2 Mbit/s and above
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
*
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1996. All rights reserved.
Page 2
ETS 300 385: February 1996
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.
Page 3
ETS 300 385: February 1996
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3. Definitions.8
4 General test conditions.9
4.1 Test conditions and configurations .9
4.1.1 Emission tests .10
4.1.2 Immunity tests .10
4.1.2.1 Arrangements for test signals at the input of the
transmitter.11
4.1.2.2 Arrangements for test signals at the output of the
transmitter.11
4.1.2.3 Arrangements for test signals at the input of the receiver .12
4.1.2.4 Arrangements for test signals at the output of the receiver.12
5 Performance assessment .12
5.1 General .12
5.2 Equipment which can provide a communications link .12
5.3 Equipment which does not provide a communications link .12
5.4 Ancillary equipment.13
5.5 Equipment classification .13
6 Performance criteria.13
7 Applicability overview tables.14
7.1 Emission .14
7.2 Immunity .15
8 Test methods and limits for emission tests.15
8.1 Enclosure.15
8.1.1 Definition .15
8.1.2 Test method .15
8.1.3 Limits.15
8.2 DC power input/output port.16
8.2.1 Definition .16
8.2.2 Test method .16
8.2.3 Limits.16
8.3 AC mains power input/output port.17
8.3.1 Definition .17
8.3.2 Test method .17
8.3.3 Limits.17
9 Test methods and levels for immunity tests.17
9.1 Radio frequency electromagnetic field (80-1000 MHz).17
9.1.1 Definition .17
9.1.2 Test method and level.18
9.1.3 Performance criteria.18
9.2 Electrostatic discharge.18
9.2.1 Definition .18
9.2.2 Test method and level.18
9.2.3 Performance criteria.18
9.3 Fast transients common mode .19
Page 4
ETS 300 385: February 1996
9.3.1 Definition. 19
9.3.2 Test method and level . 19
9.3.3 Performance criteria . 19
9.4 RF common mode, 0,15 MHz - 80 MHz (current clamp injection). 19
9.4.1 Definition. 20
9.4.2 Test method and level . 20
9.4.3 Performance criteria . 20
9.5 Voltage dips and interruptions. 20
9.5.1 Definition. 20
9.5.2 Test method and level . 20
9.5.3 Performance criteria . 20
9.6 Surges common and differential mode . 21
9.6.1 Definition. 21
9.6.2 Test method and level . 21
9.6.3 Performance criteria . 21
History. 22
Page 5
ETS 300 385: February 1996
Foreword
This European Telecommunication Standard (ETS) has been prepared by the Radio Equipment and
Systems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
Other ETSs cover radio communications equipment not listed in the scope.
This ETS is based upon the Generic Standards EN 50081-1 [1] and EN 50082-1 [2] and other standards
where appropriate, to meet the essential requirements of the Council Directive 89/336/EEC "Council
Directive of 3 May 1989 on the approximation of the laws of the Member States relating to
Electromagnetic Compatibility" (Official Journal L139 of 23/5/89).
Transposition dates
Date of adoption of this ETS: 14 February 1996
Date of latest announcement of this ETS (doa): 31 May 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 30 November 1996
Date of withdrawal of any conflicting National Standard (dow): 30 November 1996
Page 6
ETS 300 385: February 1996
Blank page
Page 7
ETS 300 385: February 1996
1 Scope
This ETS covers the assessment of Digital Fixed Radio Links and ancillary equipment in respect of
ElectroMagnetic Compatibility (EMC). Technical specifications related to the antenna port of the radio
equipment are found in the related product standards for the effective use of the radio spectrum.
This ETS specifies the applicable EMC tests, the test methods, the limits and the minimum performance
criteria for Digital Fixed Radio Links, operating as fixed point to point systems, with data rates at around
2 Mbit/s and above, in the frequency range 1 - 60 GHz, and the associated ancillary equipment.
The processing and protection switch, (de)modulator, transmitter, receiver, RF filters, branching networks,
feeders are covered by this ETS. The multiplexing and/or de-multiplexing elements are covered if they
form part of the transmitter, receiver and/or transceiver.
The environmental classification used in this ETS refers to the environment classification used in the
Generic Standards EN 50081-1 [1], EN 50082-1 [2] or the telecommunications centre environment
ETS 300 386-1 [14].
The EMC requirements have been selected to ensure an adequate level of compatibility for apparatus at
residential, commercial, light industrial or telecommunications centre environment. The levels do not cover
extreme cases which may occur in any location but have a low probability of occurrence.
This ETS may not cover those cases where a potential source of interference which is producing
individually repeated transient phenomena or a continuous phenomena is permanently present, e.g. a
radar or broadcast site in the near vicinity. In such a case it may be necessary to use special protection
applied to either the source of interference or the interfered part or both.
Compliance of radio equipment to the requirements of this ETS does not signify compliance to any
requirements related to the use of the equipment (i.e. licensing requirements).
Compliance to this ETS does not signify compliance to any safety requirements. However, it is the
responsibility of the assessor of the equipment that any observations regarding apparatus becoming
dangerous or unsafe as a result of the application of the tests of this ETS, should be recorded in the test
report.
2 Normative references
This ETS incorporates by dated and undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] EN 50081-1 (1992): "Electromagnetic compatibility - Generic emission standard
- Part 1: Residential, commercial and light industry".
[2] EN 50082-1 (1992): "Electromagnetic compatibility - Generic immunity standard
- Part 1: Residential, commercial and light industry".
[3] EN 55022 (1994): "Limits and methods of measurement of radio interference
characteristics of information technology equipment".
[4] CISPR 16-1: "Specification for radio disturbance and immunity measuring
apparatus and methods; Part 1: Radio disturbance and immunity measuring
apparatus".
[5] ENV 50140: "Electromagnetic compatibility - Basic immunity standard -
Radiated, radio frequency electromagnetic field; Immunity test".
[6] EN 60801-2 (1993): "Electromagnetic compatibility for industrial-process
measurement and control equipment - Part 2: Electrostatic discharge
requirements".
Page 8
ETS 300 385: February 1996
[7] IEC 801-4 (1988): "Electromagnetic compatibility for industrial-process
measurement and control equipment - Part 4: Electrical fast transient / burst
requirements".
[8] ENV 50141: " Electromagnetic compatibility - Basic immunity standard -
Conducted disturbances induced by radio-frequency fields".
[9] EN 61000-4-11: "Electromagnetic compatibility (EMC) - Part 4: Testing and
measurement techniques - Section 11: Voltage dips, short interruptions and
voltage variations immunity tests".
[10] ENV 50142: "Electromagnetic compatibility - Basic immunity standard - Surge
immunity test".
[11] ITU-T Recommendation G.821: " Error performance of an international digital
connection forming part of an integrated services digital network".
[12] ITU-T Recommendation. G.826: " Error performance parameters and objectives
for international, constant bit rate digital paths at or above the primary rate ".
[13] IEC 50 (161): "International Electrotechnical Vocabulary - Chapter 161
Electromagetic compatibility".
[14] ETS 300 386-1: " Equipment Engineering (EE); Public telecommunication
network equipment Electro-Magnetic Compatibility (EMC) requirements; Part 1:
Product family overview, compliance criteria and test levels".
3. Definitions
ancillary equipment: Equipment (apparatus), used in connection with a receiver, transmitter or
transceiver is considered as an ancillary equipment (apparatus) if:
- the equipment is intended for use in conjunction with a receiver, transmitter or transceiver to
provide additional operational and/or control features to the radio equipment (e.g. to extend control
to another position or location); and
- the equipment cannot be used on a stand alone basis to provide user functions independently of a
receiver, transmitter or transceiver; and
- the receiver, transmitter or transceiver to which it is connected, is capable of providing some
intended operation such as transmitting and/or receiving without the ancillary equipment. (i.e. it is
not a sub unit of the main equipment essential to the main equipment basic functions).
continuous phenomena (continuous disturbance): Electromagnetic disturbance, the effects of which
on a particular device or equipment cannot be resolved into a succession of distinct effects
IEC 50 (161) [13].
port: A particular interface of the specified equipment (apparatus) with the external electromagnetic
environment.
enclosure port: The physical boundary of the apparatus onto which an electromagnetic field may radiate
or impinge.
radio communications equipment: An apparatus that includes one or more transmitters and/or
receivers and/or parts thereof. This type of equipment (apparatus) is used in a fixed application but may
be used as transportable equipment (semi fixed) to provide for provisional links.
transient phenomena: Pertaining to or designating a phenomena or a quantity which varies between two
consecutive steady states during a time interval short compared with the time-scale of interest
IEC 50 (161) [13].
Page 9
ETS 300 385: February 1996
4 General test conditions
This clause defines the general test configuration and is relevant to clauses 8 and 9.
4.1 Test conditions and configurations
This subclause defines the test conditions and configurations for the emission and immunity tests as
follows:
- a transmitter shall, as a minimum, comprise the element between E' and A' of figure 1. Additionally
the transmitter may comprise any of the other elements from the transmitter chain shown in
figure 1. If these additional elements are part of the transmitter or system they shall also meet the
requirements of this ETS;
Processing
Z'
G' F' E' A' B' C' D'
Tx RF
Branching
Multiplexing & Protection Modulator Transmitter Feeder
Network
Filter
Switch
NOTE 1: For the purposes of defining the measurement points, the branching network (B' to C')
does not include a hybrid.
NOTE 2: Points B' and C' may coincide, dependent on the equipment configuration.
Figure 1: Elements of a transmitter
- a receiver shall, as a minimum, comprise the element between A and E of figure 2. Additionally the
receiver may comprise any of the other elements from the receiver chain shown in figure 2. If these
additional elements are part of the receiver or system they shall also meet the requirements of this
ETS;
Processing
D C B Rx RF A E F G Z
Branching
& Protection
Feeder Receiver Demodulator Demux
Network
Filter
Switch
NOTE 1: For the purposes of defining the measurement points, the branching network (B to C)
does not include a hybrid.
NOTE 2: Points B and C may coincide, dependent on the equipment configuration.
Figure 2: Elements of a receiver
- a transceiver shall comprise as a minimum the elements E' to A' and A to E shown in figures 1
and 2, and additionally it may comprise any combinations of the other elements. If these additional
elements are part of the transceiver they shall also meet the requirements of this ETS;
- the equipment shall be tested under conditions which are within the manufacturer's declared range
of humidity, temperature and supply voltage;
- the test configuration shall be as close to normal intended use as possible;
- if the equipment is part of a system, or can be connected to ancillary equipment, then it shall be
acceptable to test the equipment while connected to the minimum configuration of ancillary
equipment necessary to exercise the ports;
- ports which in normal operation are connected shall be connected to an ancillary equipment or to a
representative piece of cable correctly terminated to simulate the impedance of the ancillary
equipment, RF input/output ports shall be correctly terminated;
Page 10
ETS 300 385: February 1996
- if the equipment has a large number of ports, then a sufficient number shall be selected to simulate
actual operation conditions and to ensure that all the different types of termination are tested;
- ports which are not connected to cables during normal intended operation, e.g. service connectors,
programming connectors, temporary connectors etc. shall not be connected to any cables for the
purpose of EMC testing. Where cables have to be connected to these ports, or interconnecting
cables have to be extended in length in order to exercise the EUT, precautions shall be taken to
ensure that the evaluation of the EUT is not affected by the addition or extension of these cables;
- the test conditions, test configuration and mode of operation shall be recorded in the test report.
4.1.1 Emission tests
This subclause defines the test conditions and configurations for the emission tests as follows:
- the measurement shall be made in the operation mode producing the largest emission in the
frequency band being investigated consistent with normal applications;
- an attempt shall be made to maximise the detected radiated emission for example by moving the
cables of the equipment.
4.1.2 Immunity tests
This subclause defines the test conditions and configurations for the immunity tests as follows:
- the test configuration shall for transmitters be in accordance with the principle of one of the
figures 3, 5 or 6 and for receivers it shall be in accordance with the principle of one of the
figures 4, 5 or 6.
- the measuring equipment shall be located outside the test environment. Adequate measures shall
be taken to avoid any effects of the unwanted signals on the measuring equipment.
Inside test environment Outside test environment
Input RF output
BER
Transmitter Attenuator Receiver
equipment
Signal
source
Figure 3: Test configuration for transmitters
During immunity tests the transmitter shall be operated at its rated output power. The input to the
transmitter shall be in accordance with subclause 4.1.2.1 (see figure 3). A communication link shall be
established at the start of the test and be maintained during the test.
Inside test environment Outside test environment
Output RF input
Signal
Receiver Attenuator Transmitter
source
BER
equipment
Figure 4: Test configuration for receivers.
Page 11
ETS 300 385: February 1996
During immunity tests for receivers, the wanted RF input signal, coupled to the receiver, shall be in
accordance with subclause 4.1.2.3 (see figure 4). A communication link shall be established at the start of
the test and be maintained during the test.
Inside test environment Outside test environment
RF input Output
BER
Attenuator Receiver
equipment
Signal
Transmitter
source
Figure. 5: Test configuration of transceiver, operating on the same Rx and Tx frequency
If the transmitter and receiver in the equipment under test can operate on the same radio frequency, the
transmitter with an input as in subclause 4.1.2.1 with its RF output suitably attenuated may be used to
constitute the wanted RF input signal to the receiver (see figure 5). A communication link shall be
established at the start of the test and be maintained during the test.
Inside test environment Outside test environment
Input RF output
BER
Receiver
Attenuator
Transmitter
equipment
Output RF input
Signal
Receiver Attenuator Transmitter
source
Figure. 6. : Test configuration of transceiver, operating on different RX and TX frequencies
In the case of duplex transceivers where the transmitter and receiver cannot operate at the same radio
frequency, the wanted input signal, coupled to the receiver, shall be in accordance subclause 4.1.2.1. The
transmitter shall be operated at its rated output power, and with its input coupled to the output of the
receiver (repeater mode) (see figure 6). A communication link shall be established at the start of the test
and be maintained during the test.
The measurement shall be made in the mode of operation as required in this subclause.
For the immunity tests of ancillary equipment without a separate pass/fail criteria, the receiver, transmitter
or transceiver coupled to the ancillary equipment, shall be used to judge whether the ancillary equipment
passes or fails.
4.1.2.1 Arrangements for test signals at the input of the transmitter
The input of the transmitter shall be coupled via the normal input connector to the signal source shown in
figures 3 to 6.
The wanted signal(s) shall be (a) representative baseband input signal(s) corresponding to normal
operation.
4.1.2.2 Arrangements for test signals at
...