SIST ETS 300 224:1998
(Main)Electromagnetic compatibility and Radio spectrum Matters (ERM); On-site paging service; Technical and functional characteristics for on-site paging systems, including test methods
Electromagnetic compatibility and Radio spectrum Matters (ERM); On-site paging service; Technical and functional characteristics for on-site paging systems, including test methods
Modifications to ETS 300 224 to bring it in line with ETR 238. This together with ETS 300 682 is intended to become a Harmonised Standard, the reference of whi ch is intended to be published in the Official Journal of the European Communities referencing the EMC Directive.
Radijska oprema in sistemi (RES) - Storitev osebnega klica na kraju samem - Tehnične in funkcijske karakteristike za sisteme osebnega klica na kraju samem, vključno s preskušalnimi metodami
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-1998
5DGLMVNDRSUHPDLQVLVWHPL 5(6 6WRULWHYRVHEQHJDNOLFDQDNUDMXVDPHP
7HKQLþQHLQIXQNFLMVNHNDUDNWHULVWLNH]DVLVWHPHRVHEQHJDNOLFDQDNUDMXVDPHP
YNOMXþQRVSUHVNXãDOQLPLPHWRGDPL
Electromagnetic compatibility and Radio spectrum Matters (ERM); On-site paging
service; Technical and functional characteristics for on-site paging systems, including
test methods
Ta slovenski standard je istoveten z: ETS 300 224 Edition 2
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
33.070.20 Sistem za osebni klic Paging systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN ETS 300 224
TELECOMMUNICATION March 1998
STANDARD Second Edition
Source: ERM Reference: RE/ERM-RP04-013
ICS: 33.020
Key words: Radio, paging, testing
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
On-site paging service;
Technical and functional characteristics for on-site paging
systems, including test methods
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Internet: secretariat@etsi.fr - http://www.etsi.fr - http://www.etsi.org
Tel.: +33 4 92 94 42 00 - Fax: +33 4 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 1998. All rights reserved.
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ETS 300 224: March 1998
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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ETS 300 224: March 1998
Contents
Foreword .9
1 Scope .11
2 Normative references.11
3 Definitions and abbreviations .11
3.1 Definitions .11
3.2 Abbreviations .12
4 Functional characteristics.12
4.1 On-site paging system description.12
4.2 On-site paging system basic services .12
4.3 Description of additional functional characteristics.13
5 General.14
5.1 Presentation of radio paging equipment for testing purposes .14
5.1.1 Choice of model for type approval.14
5.1.2 Definition of alignment range.14
5.1.3 Definition of the categories of the alignment range (AR1 and AR2) .14
5.1.4 Choice of frequencies.14
5.1.5 Testing of equipment of category AR1.14
5.1.6 Testing of equipment of category AR2.14
5.1.7 Testing of equipment without an external 50 W antenna connector.15
5.1.7.1 Equipment with a permanent internal 50 W Radio
Frequency (RF) connector.15
5.1.7.2 Equipment with a temporary 50 W RF connector.15
5.2 Mechanical and electrical design.15
5.3 Marking (equipment identification).15
5.4 Controls.15
5.5 Transmitter shut-off facility.15
5.6 Receiver mute or squelch circuit.15
5.7 Declarations by the manufacturer.15
5.8 Auxiliary test equipment.16
5.9 Categories of emission .16
5.10 Interpretation of the measurement results.16
6 Test conditions, power sources and ambient temperatures .16
6.1 Normal and extreme test conditions .16
6.2 Normal operational test conditions .16
6.2.1 Normal temperature and humidity.16
6.2.2 Normal test power source .16
6.3 Extreme test conditions .17
6.3.1 Procedure for tests at extreme temperatures .17
6.3.2 Extreme temperature limits .17
6.3.3 Extreme test power source .18
6.3.4 Test power source.18
7 Electrical test conditions.18
7.1 Normal test signals and test modulation.18
7.1.1 Normal test signals for analogue speech .19
7.1.2 Normal test signals for data .19
7.2 Artificial load.19
7.3 Test fixture for transmitters with an integral antenna.19
7.4 Test site and general arrangements for the measurement of radiated fields.20
7.5 Arrangements for test signals applied to the receiver input.20
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ETS 300 224: March 1998
8 Transmitter requirements . 20
8.1 Frequency error. 20
8.1.1 Definition. 20
8.1.2 Method of measurement. 20
8.1.3 Limits . 21
8.2 Carrier power. 21
8.2.1 Definition. 21
8.2.2 Carrier power (conducted). 21
8.2.2.1 Method of measurement. 21
8.2.2.2 Limits. 22
8.2.3 Effective radiated power . 22
8.2.3.1 Method of measurement. 22
8.2.3.2 Limits. 24
8.3 Adjacent channel power. 24
8.3.1 Definition. 24
8.3.2 Method of measurement. 24
8.3.3 Limits . 25
8.4 Frequency deviation .26
8.4.1 Definition. 26
8.4.2 Method of measurement. 26
8.4.3 Analogue signals within the audio bandwidth . 26
8.4.3.1 Method of measurement. 26
8.4.3.2 Limits. 27
8.4.4 Analogue signals above the audio bandwidth. 27
8.4.4.1 Method of measurement. 27
8.4.4.2 Limits. 27
8.5 Spurious emissions .28
8.5.1 Definition. 28
8.5.2 Method of measurement. 29
8.5.2.1 Method of measuring the spurious conducted power level. 29
8.5.2.2 Method of measuring the effective radiated spurious
power level . 29
8.5.3 Limits . 30
8.6 Transmitter transient behaviour . 30
8.6.1 Definition. 30
8.6.1.1 Keying criteria when the transmitter output power is
switched on . 31
8.6.1.2 Keying criteria when the transmitter output power is
switched off . 31
8.6.2 Method of measurement. 32
8.6.3 Limits . 33
9 Receiver requirements . 33
9.1 Pocket paging receivers. 33
9.1.1 Spurious emissions. 33
9.1.1.1 Definition . 33
9.1.1.2 Method of measurement. 33
9.1.1.3 Limits. 34
9.2 Base station receivers.34
9.2.1 Measured sensitivity for analogue speech. 34
9.2.1.1 Definition . 34
9.2.1.2 Method of measurement. 34
9.2.1.3 Limits. 34
9.2.2 Measured sensitivity for messages. 34
9.2.2.1 Definition . 34
9.2.2.2 Method of measurement. 34
9.2.2.3 Limits. 35
9.2.3 Co-channel rejection for analogue speech . 35
9.2.3.1 Definition . 35
9.2.3.2 Method of measurement. 35
9.2.3.3 Limits. 35
9.2.4 Co-channel rejection for messages. 36
9.2.4.1 Definition . 36
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9.2.4.2 Method of measurement.36
9.2.4.3 Limits .36
9.2.5 Adjacent channel selectivity for analogue speech.36
9.2.5.1 Definition.36
9.2.5.2 Method of measurement.37
9.2.5.3 Limits .37
9.2.6 Adjacent channel selectivity for messages.37
9.2.6.1 Definition.37
9.2.6.2 Method of measurement.37
9.2.6.3 Limits .38
9.2.7 Spurious response immunity for analogue speech .38
9.2.7.1 Definition.38
9.2.7.2 Method of measurement.38
9.2.7.3 Limit .39
9.2.8 Spurious response immunity for messages .39
9.2.8.1 Definition.39
9.2.8.2 Method of measurement.39
9.2.8.3 Limit .39
9.2.9 Intermodulation immunity for analogue speech .40
9.2.9.1 Definition.40
9.2.9.2 Method of measurement.40
9.2.9.3 Limit .40
9.2.10 Intermodulation immunity for messages .41
9.2.10.1 Definition.41
9.2.10.2 Method of measurement.41
9.2.10.3 Limit .42
9.2.11 Blocking immunity or desensitization for analogue speech.42
9.2.11.1 Definition.42
9.2.11.2 Method of measurement.42
9.2.11.3 Limit .42
9.2.12 Blocking immunity or desensitization for messages.43
9.2.12.1 Definition.43
9.2.12.2 Method of measurement.43
9.2.12.3 Limit .43
9.2.13 Spurious emissions .43
9.2.13.1 Definition.43
9.2.13.2 Method of measurement.44
9.2.13.2.1 Conducted spurious components .44
9.2.13.2.2 Radiated spurious components .44
9.2.13.3 Limits .44
10 Inductive loop systems.44
10.1 Additional definitions for inductive systems .44
10.2 General .45
10.2.1 Presentation of inductive loop paging equipment for testing purposes.45
10.2.2 Choice of model for type testing.45
10.2.3 Multi-carrier loop equipment.45
10.2.3.1 Loop receivers .45
10.2.3.2 Loop transmitters.45
10.2.4 Single (modulated) carrier loop equipment .45
10.2.4.1 Definition of alignment range.45
10.2.4.2 Definition of the categories of the alignment range (AR1
and AR2).45
10.2.4.3 Choice of frequencies.45
10.2.4.4 Testing of equipment of category AR1 .45
10.2.4.5 Testing of equipment of category AR2 .45
10.3 Loop transmitter requirements.46
10.3.1 Transmitter carrier power .46
10.3.1.1 Definition.46
10.3.1.2 Measuring method.46
10.3.1.3 Limit .46
10.3.2 Range of operating frequencies .46
10.3.2.1 Limits .46
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10.3.2.2 Frequency error. 46
10.3.2.2.1 Definition . 46
10.3.2.2.2 Measuring method . 46
10.3.2.2.3 Limits. 47
10.3.2.3 Modulation bandwidth . 47
10.3.2.3.1 Definition . 47
10.3.2.3.2 Measuring method . 47
10.3.2.3.3 Limit. 47
10.3.3 Spurious emissions. 47
10.3.3.1 Definition . 47
10.3.3.2 Measuring methods . 47
10.3.3.2.1 Method of measuring the power level . 47
10.3.3.2.2 Method of measuring the field strength 48
10.3.3.2.3 Method of measuring spurious
radiation above 25 MHz . 48
10.3.3.3 Limits. 48
10.4 Receiver requirements . 48
10.4.1 Spurious emissions. 48
10.4.1.1 Definition . 48
10.4.1.2 Measuring method . 48
10.4.1.3 Limits. 49
11 Measurement uncertainty . 49
11.1 Absolute measurement uncertainties: maximum values . 49
Annex A (normative): Radiated measurements. 50
A.1 Test sites and general arrangements for measurements involving the use of radiated fields . 50
A.1.1 Outdoor test site. 50
A.1.1.1 Standard position. 50
A.1.2 Test antenna . 51
A.1.3 Substitution antenna. 51
A.1.4 Optional additional indoor site . 52
A.2 Guidance on the use of radiation test sites . 52
A.2.1 Measuring distance . 53
A.2.2 Test antenna . 53
A.2.3 Substitution antenna. 53
A.2.4 Artificial antenna. 53
A.2.5 Auxiliary cables . 53
A.3 Further optional alternative indoor test site using an anechoic chamber . 53
A.3.1 Example of the construction of a shielded anechoic chamber. 53
A.3.2 Influence of parasitic reflections in anechoic chambers. 54
A.3.3 Calibration of the shielded RF anechoic chamber . 54
Annex B (normative): Support for pocket equipment. 57
Annex C (normative): Specification of power measuring receiver. 58
C.1 IF filter. 58
C.2 Attenuation indicator . 59
C.3 RMS value indicator. 59
C.4 Oscillator and amplifier . 59
Annex D (normative): Spurious radiation limits for loop systems . 60
Annex E (normative): Subclauses of this ETS relevant for compliance with the essential
requirements of relevant EC Council Directives . 61
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Annex F (normative): ERC Decision on the adoption of approval regulations based on this ETS .62
Annex G (informative): Detailed on-site description .70
G.1 Characteristic features .70
G.2 On-site paging users .71
G.3 Spectrum efficiency.71
Annex H (informative): Bibliography.72
History.73
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ETS 300 224: March 1998
Foreword
This second edition European Telecommunication Standard (ETS) has been produced by the EMC and
Radio Spectrum Matters (ERM) Technical Committee of the European Telecommunications Standards
Institute (ETSI).
This ETS has been produced by ETSI in response to a mandate from the European Commission issued
under Council Directive 83/189/EEC (as amended) laying down a procedure for the provision of
information in the field of technical standards and regulations.
This ETS, together with ETS 300 682, is intended to become a Harmonized Standard, the reference of
which will be published in the Official Journal of the European Communities referencing the Council
Directive on the approximation of the laws of the Member States relating to electromagnetic compatibility
("the EMC Directive") (89/336/EEC as amended).
Annex A provides requirements concerning test sites and general arrangements for measurements
involving the use of radiated fields.
Annex B provides requirements concerning measuring support for pocket equipment.
Annex C contains specifications for the adjacent channel power measuring receiver.
Annex D is a graphical representation of subclause 10.4.1.3 referring to the limits for spurious radiation
from loop receivers.
Annex E contains technical specifications relevant to the EMC Directive.
Annex F contains the ERC Decision which references the technical specifications in this ETS for inclusion
in national type approval regulations.
Annex G provides information concerning the on-site paging service.
Annex H contains a bibliography.
This ETS also contains text concerning type approval of the equipment to which it relates. This text should be
considered only as guidance and does not make this ETS mandatory in its status as a standard. However,
this ETS can be referenced, wholly or in part, for mandatory application by decisions of regulatory bodies.
This ETS is based mainly on CEPT Recommendation T/R 20-05 and ESPA publications 4.2.6 and 4.2.6.a.
The conditions for licensing as well as conditions for interfacing to Public Switched Telephone Network
(PSTN) are determined by the appropriate authorities.
Transposition dates
Date of adoption of this ETS: 20 February 1998
Date of latest announcement of this ETS (doa): 30 June 1998
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 December 1998
Date of withdrawal of any conflicting National Standard (dow): 31 December 1998
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ETS 300 224: March 1998
1 Scope
This European Telecommunication Standard (ETS) specifies the minimum performance characteristic
and the related methods of measurement for on-site paging transmitters and receivers. Although this ETS
covers the general operational aspects of on-site paging systems, it is restricted to the wireless (radio and
loop) communications of the service. It is assumed that the radio type of system will operate in the
frequency range of 25 MHz to 470 MHz, and loop systems below 146 kHz.
This ETS does not cover radiation below 25 MHz, except for the output of loop equipment.
This ETS does not include performance characteristics that may be required by the user or requirements
for interfacing equipment.
Additional standards or specifications may be required for equipment intended to interface to the Public
Switched Telephone Network (PSTN).
This ETS also contains instructions for the presentation of equipment for type testing purposes.
The types of equipment covered by this ETS are as follows:
- base station transmitters (radio and loop) and transcoders, with or without an external 50 W antenna
connector;
- base station receivers, with a permanent 50 W connector;
- pocket unit (receiver, transceiver or transmitter), with or without an external 50 W antenna
connector.
2 Normative references
This ETS incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and 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] ETR 027: "Radio Equipment and Systems (RES); Methods of measurement for
private mobile radio equipment".
[2] ETR 028: "Radio Equipment and Systems (RES); Uncertainties in the
measurement of mobile radio equipment characteristics".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
base station receiver: Receiver intended for use in a fixed location.
base station transmitter: Transmitter intended for use in a fixed location.
category AR1: See subclause 5.1.3.
category AR2: See subclause 5.1.3.
coded messages: The transmission of messages to a paging receiver via coded signals.
constant envelope modulation: Either phase or frequency modulation with or without pre-emphasis.
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integral antenna: An antenna designed as an indispensable part of the equipment, with or without the
use of an antenna connector.
Low Frequency (LF): The frequency range 30 kHz to 300 kHz.
pocket unit: Pocket size equipment fitted with an integral antenna carried on a person or held in the
hand.
preamble facility: A signal, needed in a system in which a battery saving system is used, in order to
activate and prepare receivers for the calls to come.
transcoder: A transmitter and encoder combined in a single housing and operated in a fixed location
indoors.
Very Low Frequency (VLF): The frequency range 3 kHz to 30 kHz.
3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
AR Alignment Range
emf electromotive force
IF Intermediate Frequency
LF Low Frequency
MPFD Maximum Permissible Frequency Deviation
PBX Private Branch eXchange
PSTN Public Switched Telephone Network
RF Radio Frequency
rms root-mean-squared
SINAD (SIgnal + Noise And Distortion) / (Noise + Distortion) ratio
Tx Transmitter
VLF Very Low Frequency
VSWR Voltage Standing Wave Ratio
4 Functional characteristics
4.1 On-site paging system description
An on-site paging system is a privately owned and operated wireless communication system, used in a
restricted and predefined area, with the primary function to alert and/or inform ambulant people. The air
interface of the system, using a single radio channel, comprises at least one transmitter.
The paging system may be extended with a return frequency. This return or talk-back frequency is mainly
used for call acknowledgement but may also be used to supply some of the features of a mobile radio
service or other two-way radio services, without the need to use a separate system.
The radio part of an approved on-site paging system is made up exclusively from equipment that has
been approved according to this ETS. Other equipment that may be connected to it shall fulfil the
standards applicable to that equipment (if any).
Annex G provides a more detailed description of the on-site paging system.
4.2 On-site paging system basic services
The main services that can be obtained through an on-site paging system are a function of the capabilities
of the pocket units.
The simplest and most well known paging receiver is a selective call receiver with an alerting device.
When paged, the pocket unit generates a certain alerting pattern and the user should take some
pre-determined actions. The receiver may also receive a spoken message after the alert signal.
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ETS 300 224: March 1998
When the receiver is equipped with a visual display, limited text messages can be presented to the user
by additional transmission of data. If the receiver is equipped with a transmitter, the user can acknowledge
a message and/or establish a speech connection.
System configurations include:
- alert only;
- alert + data one way;
- alert + data two ways;
- alert + voice one way;
- alert + voice two ways;
- alert + data + voice one way;
- alert + data + voice two ways.
Different users have different communication requirements. Therefore, most paging systems allow any
mixture of pocket units. The size of an on-site paging system, in number of pocket units, may vary from
one to several thousand units.
4.3 Description of additional functional characteristics
call acknowledgement facility: The feature enabling the transmission of a short signal from the pocket
unit to the base station(s) to confirm the reception of a call.
dial-in facility: The facility whereby a pocket transceiver forming part of a paging system is able to initiate
a call to the base station(s).
dial-out facility: The facility allowing a pocket paging transceiver to initiate a call, via a base station, to
another external on-site communication network, accessible from the paging system, e.g. a Private
Branch eXchange (PBX).
dial-through facility: The facility allowing a pocket paging transceiver to initiate a call to another pocket
unit belonging to the same paging system via the base station.
periodic calls facility: Periodic calls are paging calls which are transmitted at regular intervals by the
base station(s) e.g. "time of day" and "out of range".
preamble facility: A preamble is a signal needed in a system in which a battery saving system is used in
order to activate and prepare receivers for the calls to come.
speech facility: The mode of operation allowing the transmission of speech messages from the base
stations to the paging receivers.
talk-back facility: The mode of operation enabling the transmission of speech messages from the pocket
units to the base stations after the reception of a selective call from the base station.
talk-through facility: The application in which a speech signal from a pocket transceiver is relayed by the
base station(s) and transmitted to another pocket transceiver of the same system and site.
In order to make maximum use of the allocated radio channels (one outgoing and one return), and to give
maximum flexibility to the user, the user may install and use any combination of the features of the system. In
addition to normal paging calls this includes:
- call acknowledgement;
- speech;
- talk-back;
- talk-through;
- dial-in;
- dial-out;
- dial-through;
- the use of multi-transmitter systems (working on one frequency);
- the use of diversity (multi-receiver) reception for the base station receiver system;
- the transmission of periodic calls and preambles.
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ETS 300 224: March 1998
Where spectrum is available, there are no restrictions on the use of these functions, nor are there any
time limitations. However, given the fact that frequencies for on-site paging are never exclusive, an
excessive use of the possible facilities is no justification for further spectrum allocation for the same
system and site.
Moreover, in order to cope with practical situations base transmitters with a maximum rated output power
of more than 1 W should be set to operate between 1 W and their rated maximum output power.
5 General
5.1 Presentation of radio paging equipment for testing purposes
Each equipment submitted for type testing shall fulfil the requirements of this ETS on all frequencies over
which it is intended to operate.
To simplify and harmonize the type testing procedures between the different test laboratories,
measurements shall be performed according to this ETS. The following subclauses are intended to give
confidence that the requirements set out in this ETS have been met.
5.1.1 Choice of model for type approval
The manufacturer shall provide one or more production models of equipment, as appropriate, for type
testing.
In the case of equipment without an external antenna connector see subclause 5.1.7.
5.1.2 Definition of alignment range
The manufacturer shall, when submitting equipment for test, state the alignment range for the receiver or
the transmitter. The alignment range is defined as the frequency range over which the receiver or the
transmitter can be programmed and/or re-aligned to operate without any physical change of components
other than programmable read only memories or crystals (for the receiver and the transmitter). For the
purpose of all measurements the receiver and transmitter shall be considered separately.
5.1.3 Definition of the categories of the alignment range (AR1 and AR2)
Category AR1 corresponds to a limit of the alignment range of the receiver and transmitter which is less
than, or equal to, 10 % of the highest frequency of the alignment range.
Category AR2 corresponds to a limit of the alignment range of the receiver and transmitter which is
greater than 10 % of the highest frequency of the alignment range.
5.1.4 Choice of frequencies
The frequencies for testing shall be chosen by the manufacturer in accordance with subclauses 5.1.5
and 5.1.6.
5.1.5 Testing of equipment of category AR1
Full tests shall be carried out on a channel within 100 kHz of the centre frequency of the alignment range
of one sample of the equipment.
5.1.6 Testing of equipment of category AR2
Full tests shall be carried out on three samples of the equipment, each sample aligned to a different
channel.
The frequency of the channel of:
- the first sample shall be within 100 kHz of the lowest frequency of the alignment range;
- the second sample shall be within 100 kHz of the centre frequency of the alignment range;
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ETS 300 224: March 1998
- the third sample shall be within 100 kHz of the highest frequency of the alignment range.
5.1.7 Testing of equipment without an external 50 W antenna connector
To facilitate relative measurements, use can be made of a test fixture as described in subclause 7.3, or
the equipment can be supplied with a permanent or temporary internal 50 W connector or a temporary
external 50 W connector.
5.1.7.1 Equipment with a permanent internal 50 W Radio Frequency (RF) connector
The way to access a permanent internal 50 W Radio Frequency (RF) connector shall be stated by the
manufacturer with the aid of a diagram. The fact that use has been made of a permanent internal 50 W RF
socket shall be recorded in the test report.
5.1.7.2 Equipment with a temporary 50 W RF connector
The applicant shall submit two sets of equipment to the test laboratory, one fitted with a temporary 50 W
RF connector with the antenna disconnected and the other with the antenna connected. Each equipment
shall be used for the appropriate tests.
The way the temporary 50 W RF connector is implemented shall be stated by the manufacturer with the
aid of a diagram. The fact that use has been made of the temporary 50 W RF connector to facilitate
measurements shall be stated in the test report. The addition of a temporary 50 W RF connector shall not
influence the performance of the equipment under test.
5.2 Mechanical and electrical design
Transmitters and receivers may be individual or combination units but shall operate with the correct power
source.
5.3 Marking (equipment identification)
The equipment shall be marked in a visible place. This marking shall be legible and durable.
The marking shall include as a minimum:
- the name of the manufacturer or his trademark;
- the type designation.
The type designation shall allow recognition of the multiple unit type of assembly.
5.4 Controls
Those controls, which if maladjusted can increase the capability of the equipment to cause interference,
shall not be accessible without breaking a seal.
5.5 Transmitter shut-off facility
If the transmitter is fitted with an automatic shut-off facility, it should be made inoperative for the duration
of the test.
5.6 Receiver mute or squelch circuit
If the receiver is equipped with a mute, squelch or battery-saving circuit, this circuit shall be made
inoperative for the duration of the tests.
5.7 Declarations by the manufacturer
When submitting equipment for type testing, the manufacturer shall supply the necessary information
according to the appropriate application form.
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ETS 300 224: March 1998
5.8 Auxiliary test equipment
All necessary test signal sources and setting up information shall accompany the equipment when it is
submitted for type testing.
5.9 Categories of emission
All types of constant envelope modulation by code and speech are permitted, which shall meet the limits
of this ETS.
5.10 Interpretation of the measurement results
The interpretation of the results recorded in a test report for the measurements described in this ETS
...
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