SIST ETS 300 385:1998

SLOVENSKI STANDARD
SIST ETS 300 385:1998
01-oktober-1998
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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
SIST ETS 300 385:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 385:1998

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SIST ETS 300 385:1998
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.

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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.

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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

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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

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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

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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".

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[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].

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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;

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- 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.

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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 the output of the transmitter
To establish a communication link the wanted output signal shall be delivered from the transmitter RF
output via suitable attenuation through a coaxial cable or wave guide. Adequate measures shall be taken
to minimise the effects of unwanted currents on the external conductor of the coaxial cable or wave guide
at the point of entry to the EUT. Mismatch errors may be avoided by placing the attenuators close to the
EUT.

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If the transmitter RF output cannot be recovered via connection another antenna of the same type may be
used to retrieve the wanted output signal from the transmitter.
4.1.2.3 Arrangements for test signals at the input of the receiver
The wanted signal shall be a representative modulated RF input signal corresponding to normal operation.
To establish a communication link the wanted input signal shall be applied to the RF input of the receiver
via a coaxial cable or wave guide. Adequate measures shall be taken to minimise the effects of unwanted
currents on the external conductor of the coaxial cable or wave guide at the point of entry to the EUT.
Mismatch errors may be avoided by placing the attenuators close to the EUT.
If the receiver RF input cannot be applied via connection another antenna of the same type may be used
to apply the wanted input signal to the receiver.
The source of the wanted input signal shall be located outside of the test environment and shall be at a
5
.
-
nominal value of 30 dB above the receiver input level for a BER of 1 x 10 This level is close to normal
operation and sufficient to avoid the broad band noise from the power amplifiers, which generate the
disturbing EM phenomena, from influencing the measurement.
4.1.2.4 Arrangements for test signals at the output of the receiver
The output of the receiver shall be coupled via the normal output connectors. The test equipment for
evaluating the performance of the equipment shall be located outside the test environment.
5 Performance assessment
5.1 General
The manufacturer shall at the time of submission of the equipment for test, supply the following
information to be recorded in the test report:
- the primary functions of the radio equipment to be tested during and after the EMC testing;
- the intended functions of the radio equipment which shall be in accordance with the documentation
accompanying the equipment;
- the ancillary equipment to be combined with the radio equipment for testing (where applicable);
- the user control functions and stored data that are required for normal operation and the method to
be used to assess whether these have been lost after EMC stress;
- an exhaustive list of ports, classified as either power or signal/control. Power ports shall further be
classified as ac or dc power;
- the environment(s) in which the equipment is intended to be used This declaration shall be as
indicated in the user instructions.
5.2 Equipment which can provide a communications link
The test arrangement and signals given in clause 4 apply to radio equipment or a combination of a radio
equipment and ancillary equipment which permits the establishment of a communications link.
5.3 Equipment which does not provide a communications link
If the equipment is of a specialised nature (see clause 6) which does not permit a communications link to
be established, such as protection switching equipment, or ancillary equipment tested in isolation,
(i.e. not connected to radio equipment), the manufacturer shall define the method of test to determine the
acceptable level of performance or degradation of performance during and/or after the test. The
manufacturer shall provide the method of observing the degradation of performance of the equipment.

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The performance assessment carried out shall be simple, but at the same time give adequate proof that
the primary functions of the equipment are operational.
5.4 Ancillary equipment
At the manufacturers discretion an ancillary equipment may be:
- declared compliant separately (in isol
...