ETSI ETS 300 341 ed.1 (1995-07)
Radio Equipment and Systems (RES); Land mobile service; Technical characteristics and test conditions for radio equipment using an integral antenna transmitting signals to initiate a specific response in the receiver
Radio Equipment and Systems (RES); Land mobile service; Technical characteristics and test conditions for radio equipment using an integral antenna transmitting signals to initiate a specific response in the receiver
DE/RES-02-03
Radijska oprema in sistemi (RES) - Storitev kopenskih mobilnih komunikacij - Tehnične značilnosti in preskušalni pogoji za radijsko opremo z vgrajeno anteno, ki oddaja signale za vzbuditev specifičnega odziva v sprejemniku
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-1998
5DGLMVNDRSUHPDLQVLVWHPL 5(6 6WRULWHYNRSHQVNLKPRELOQLKNRPXQLNDFLM
7HKQLþQH]QDþLOQRVWLLQSUHVNXãDOQLSRJRML]DUDGLMVNRRSUHPR]YJUDMHQRDQWHQR
NLRGGDMDVLJQDOH]DY]EXGLWHYVSHFLILþQHJDRG]LYDYVSUHMHPQLNX
Radio Equipment and Systems (RES); Land mobile service; Technical characteristics
and test conditions for radio equipment using an integral antenna transmitting signals to
initiate a specific response in the receiver
Ta slovenski standard je istoveten z: ETS 300 341 Edition 1
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN ETS 300 341
TELECOMMUNICATION July 1995
STANDARD
Source: ETSI TC-RES Reference: DE/RES-02-03
ICS: 33.060.20
land mobile radio, specific response, integral antenna, testing
Key words:
Radio Equipment and Systems (RES);
Land mobile service;
Technical characteristics and test conditions for
radio equipment using an integral antenna transmitting
signals to initiate a specific response in the receiver
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 1995. All rights reserved.
New presentation - see History box
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ETS 300 341: July 1995
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 300 341: July 1995
Contents
Foreword.7
Introduction .7
1 Scope .9
2 Normative references .11
3 Definitions, symbols and abbreviations .11
3.1 Definitions.11
3.2 Symbols.13
3.3 Abbreviations.13
4 General . 13
4.1 Presentation of equipment for testing purposes .13
4.1.1 Choice of model for type approval .13
4.1.2 Definitions of alignment range and switching range.13
4.1.3 Definition of the categories of the alignment range (AR1 and AR2).14
4.1.4 Choice of frequencies .14
4.1.5 Testing of single channel equipment of category AR1.14
4.1.6 Testing of single channel equipment of category AR2.14
4.1.7 Testing of two channel equipment of category AR1.14
4.1.8 Testing of two channel equipment of category AR2.15
4.1.9 Testing of multi channel equipment (more than two channels) of category
AR1 .15
4.1.10 Testing of multi channel equipment (more than two channels) of category
AR2 (i.e. switching range less than alignment range). 15
4.1.11 Testing of multi channel equipment (more than two channels) of category
AR2 (i.e. switching range equals the alignment range).16
4.2 Mechanical and electrical design .16
4.2.1 General . 16
4.2.2 Controls. 16
4.2.3 Transmitter shut-off facility.16
4.2.4 Marking. 16
4.3 Interpretation of the measurement results .17
5 Technical characteristics.17
5.1 Transmitter parameter limits .17
5.1.1 Frequency error .17
5.1.2 Effective radiated power. 18
5.1.2.1 Effective radiated power under normal test conditions .18
5.1.2.2 Effective radiated power under extreme test conditions .18
5.1.3 Adjacent channel power.19
5.1.4 Spurious emissions.19
5.1.5 Transient frequency behaviour of the transmitter.19
5.2 Receiver parameter limits .20
5.2.1 Average usable sensitivity (field strength).20
5.2.2 Co-channel rejection.21
5.2.3 Adjacent channel selectivity.21
5.2.4 Spurious response rejection .21
5.2.5 Intermodulation response rejection.22
5.2.6 Blocking or desensitisation.22
5.2.7 Spurious radiations.22
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ETS 300 341: July 1995
6 Test conditions, power sources and ambient temperatures.22
6.1 Normal and extreme test conditions .22
6.2 Test power source .22
6.3 Normal test conditions .23
6.3.1 Normal temperature and humidity.23
6.3.2 Normal test power source.23
6.3.2.1 Mains voltage .23
6.3.2.2 Regulated lead-acid battery power sources used on
vehicles.23
6.3.2.3 Other power sources .23
6.4 Extreme test conditions.23
6.4.1 Extreme temperatures .23
6.4.2 Extreme test source voltages .24
6.4.2.1 Mains voltage .24
6.4.2.2 Regulated lead-acid battery power sources used on
vehicles.24
6.4.2.3 Power sources using other types of batteries.24
6.4.2.4 Other power sources .24
6.5 Procedure for tests at extreme temperatures .24
6.5.1 Procedure for equipment designed for continuous operation.24
6.5.2 Procedure for equipment designed for intermittent operation.25
7 General conditions.25
7.1 Normal test signals, test conditions and the unwanted test signals.25
7.2 Artificial antenna.25
7.3 Test sites and general arrangements for radiated measurements.25
7.4 Transmitter automatic shut-off facility.25
7.5 Modes of operation of the transmitter .26
7.6 Arrangements for test signals at the input of the receiver via a test fixture or a test
antenna .26
7.7 Receiver mute or squelch facility.26
7.8 Encoder for receiver measurements .26
7.9 Facilities for access between the receiver demodulator output and its decoder .26
7.10 Calling indicator.26
7.11 Reset.27
7.12 Reset time.27
8 Method of measurements for transmitter parameters.27
8.1 Frequency error .27
8.1.1 Definition.27
8.1.2 Method of measurement .27
8.2 Effective radiated power.28
8.2.1 Definition.28
8.2.2 Method of measurement .28
8.2.2.1 Maximum effective radiated power under normal test
conditions.29
8.2.2.2 Average effective radiated power under normal test
conditions.31
8.2.3 Method of measurements of maximum and average effective radiated
power under extreme test conditions.31
8.3 Adjacent channel power.31
8.3.1 Definition.32
8.3.2 Method of measurement .32
8.4 Radiated spurious emissions .33
8.4.1 Definition.33
8.4.2 Method of measurement .33
8.5 Transient frequency behaviour of the transmitter.36
8.5.1 Definitions.36
8.5.2 Method of measurement .36
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ETS 300 341: July 1995
9 Methods of measurement for receiver parameters.40
9.1 Average usable sensitivity (field strength, responses).40
9.1.1 Definition .40
9.1.2 Method of measurement under normal test conditions .40
9.1.3 Method of measurement of the average usable sensitivities under extreme
test conditions.42
9.1.4 References for degradation measurements.42
9.1.4.1 Definition.42
9.1.4.2 Procedures for measurements using the test fixture .43
9.1.4.3 Procedures for measurements using the test site .43
9.2 Co-channel rejection.43
9.2.1 Definition .43
9.2.2 Method of measurement .44
9.3 Adjacent channel selectivity.45
9.3.1 Definition .45
9.3.2 Method of measurement .45
9.4 Spurious response rejection.46
9.4.1 Definition .46
9.4.2 Introduction to the method of measurement.47
9.4.3 Measurement arrangement .48
9.4.4 Method of the search. 49
9.4.5 Method of measurement .49
9.5 Intermodulation response rejection .51
9.5.1 Definition .51
9.5.2 Method of measurement .51
9.6 Blocking or desensitisation.52
9.6.1 Definition .52
9.6.2 Method of measurement.53
9.7 Spurious radiations.54
9.7.1 Definition .54
9.7.2 Method of measurement .55
10 Measurement uncertainty.57
Annex A (normative): Radiated measurements.58
A.1 Test sites and general arrangements for measurements involving the use of radiated fields .58
A.1.1 Open air test site .58
A.1.1.1 Description .58
A.1.1.2 Establishment of a relationship between signal levels and field strength .59
A.1.2 Anechoic chamber.60
A.1.2.1 General . 60
A.1.2.2 Description .60
A.1.2.3 Influence of parasitic reflections. 60
A.1.2.4 Mode of use . 61
A.1.3 Stripline arrangement .63
A.1.3.1 General . 63
A.1.3.2 Description .63
A.1.3.3 Calibration .63
A.1.3.4 Mode of use . 63
A.1.4 Indoor test site.63
A.1.4.1 Description .63
A.1.4.2 Test for parasitic reflections.64
A.1.4.3 Mode of use . 64
A.2 Standard position .65
A.3 Acoustic coupler.65
A.3.1 General.65
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A.3.2 Description .66
A.3.3 Calibration .66
A.4 Test antenna.67
A.5 Substitution antenna.67
A.6 Test fixture.67
A.6.1 Description .67
A.6.2 Calibration .68
A.6.3 Mode of use .69
A.7 Bibliography .69
Annex B (normative): Specifications for adjacent channel power measurement arrangements.70
B.1 Power measuring receiver specification.70
B.1.1 General .70
B.1.2 IF filter .70
B.1.3 Oscillator and amplifier .72
B.1.4 Attenuation indicator .72
B.1.5 Level indicators .72
B.1.5.1 R.m.s level indicator .73
B.1.5.2 Peak level indicator.73
Annex C (normative): Graphic representation of the selection of equipment and frequencies for
testing.74
Annex D (normative): Test discriminator.76
History .77
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ETS 300 341: July 1995
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).
Annex A provides additional information concerning radiated measurements.
Annex B contains normative specifications for adjacent channel power measurement arrangements.
Annex C is a graphic representation of subclause 4.1, referring to the presentation of equipment for testing
purposes.
Annex D contains specifications for the test discriminator used in transient measurements.
Transposition dates
Date of latest announcement of this ETS (doa): 31 October 1995
Date of latest publication of new National 30 April 1996
Standard or endorsement of this ETS (dop/e):
Date of withdrawal of any conflicting National
30 April 1996
Standard (dow):
Introduction
This ETS was drafted on the assumption that:
- the type test measurements performed in an accredited test laboratory in one country would be
accepted by the type approval authority in another country provided that the national regulatory
requirements are met;
- if equipment available on the market is required to be checked it should be tested in accordance
with the methods of measurement specified in this ETS.
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ETS 300 341: July 1995
1 Scope
This ETS is intended to specify the minimum performance and the methods of measurement of radio
equipment for use in the land mobile service as specified in this scope. Clause 5 provides the
corresponding limits. These limits have been chosen to ensure an acceptable grade of service and to
minimise harmful interference to other equipment and services. They are based on the interpretation of the
measurement results described in subclause 4.3.
This ETS covers the minimum characteristics considered necessary in order to make the best use of the
available frequencies. It does not necessarily include all the characteristics which may be required by a
user, nor does it necessarily represent the optimum performance achievable. It applies to non-speech and
to the non-speech part of combined speech/non-speech equipment with integral antennas, used in constant
envelope angle modulation systems in the land mobile service, operating on radio frequencies between 30
MHz and 1 000 MHz, with channel separations of 12,5 kHz, 20 kHz and 25 kHz.
This ETS, which is based upon CEPT Recommendation T/R 24-01 annex VI [1], is a general standard
which may be superseded by specific standards covering specific applications.
In this ETS, a non-speech radio equipment is defined as a radio equipment transmitting a signal to initiate a
specific response in the receiver. The equipment comprises a transmitter and associated encoder and/or a
receiver and associated decoder. The encoder and/or decoder may be a separate piece of equipment, in
which case compliance to this ETS covers the combination of encoder and/or decoder and transmitter
and/or receiver equipment.
In this ETS different requirements are given for the different radio frequency bands, channel separations,
environmental conditions and types of equipment, where appropriate.
The measurement methods have been adapted from ETR 027 [5] where possible.
The type of equipment covered by this ETS is handportable stations with integral antennas.
This ETS is complementary to I-ETS 300 219 [2] which covers radio equipment with an internal or external
RF connector transmitting signals to initiate a specific response in the receiver, for use in the land mobile
service. It is primarily intended for omnidirectional applications.
For combined speech/non speech equipment this ETS is complementary to ETS 300 296 [8] which covers
radio equipment using integral antennas for use in the land mobile service intended primarily for analogue
speech.
Channel separations, maximum transmitter effective radiated power, the type and characteristics of
modulation and the inclusion of automatic transmitter shut-off facility may be conditions required for the
issue of a licence by the appropriate administration.
Equipment which also includes an external or internal RF connector should be type tested to the
requirements of ETS 300 086 [3] and/or I-ETS 300 219 [2] using this connector.
In the case of combined speech/non-speech equipment the speech part should be tested to the
requirements of ETS 300 296 [8] and additionally the tests described in the following subclauses of this
ETS should be carried out:
- subclause 8.3: adjacent channel power;
- subclause 9.1: average usable sensitivity (responses).
These requirements also apply for equipment with an analogue output facility provided for test purposes
only.
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ETS 300 341: July 1995
Where an equipment has already been type approved to ETS 300 296 [8], and is resubmitted for type
testing to this ETS, additionally the tests described in the following subclauses of this ETS should be
carried out:
- subclause 8.3: adjacent channel power;
- subclause 8.4: radiated spurious emissions;
- subclause 9.1: average usable sensitivity (responses).
Radio equipment for data is covered by I-ETS 300 113 [4] and prETS 300 390 [9].
Additional standards or specifications may be required for equipment such as that intended for connection
to the Public Switched Telephone Network (PSTN).
This ETS does not cover requirements for radiated emissions below 30 MHz.
This ETS may also be used by accredited test laboratories for the assessment of the performance of the
equipment. The performance of the equipment submitted for type testing should be representative for the
performance of the corresponding production model. In order to avoid any ambiguity in that assessment,
this ETS contains instructions for the presentation of equipment for type testing purposes (clause 4),
conditions (clause 6) and measurement methods (clauses 8 and 9).
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ETS 300 341: July 1995
2 Normative references
This ETS incorporates by dated or undated references, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications 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] CEPT Recommendation T/R 24-01 annex VI: "Technical characteristics
and test conditions for non-speech and combined speech/non-speech
radio equipment (using signalling to initiate a specific response in the
receiver) with integral antennas in the Land Mobile Service".
[2] I-ETS 300 219 (1993): "Radio Equipment and Systems (RES); Land
mobile service; Technical characteristics and test conditions for radio
equipment transmitting signals to initiate a specific response in the
receiver".
[3] ETS 300 086: "Radio Equipment and Systems (RES); Land mobile
service; Technical characteristics and test conditions for radio equipment
with an internal or external RF connector intended primarily for analogue
speech".
[4] I-ETS 300 113 (1992): "Radio Equipment and Systems (RES); Land
mobile service; Technical characteristics and test conditions for non-
speech and combined analogue speech/non- speech equipment with an
internal or external connector, intended for the transmission of data".
[5] ETR 027: "Radio Equipment and Systems (RES); Methods of
measurement for mobile radio equipment".
[6] ETR 028: "Radio Equipment and Systems (RES); Uncertainties in the
measurement of mobile radio equipment characteristics".
[7] CCITT Recommendation O.41: "Psophometer for use on telephone-type
circuits".
[8] ETS 300 296: "Radio Equipment and Systems (RES); Land mobile
service; Technical characteristics and test conditions for radio equipment
using integral antennas intended primarily for analogue speech".
[9] Draft prETS 300 390: "Radio Equipment and Systems (RES); Land mobile
service; Technical characteristics and test conditions for non-speech and
combined analogue speech/non- speech equipment using integral
antennas, intended for the transmission of data".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purpose of this ETS, the following definitions apply:
angle modulation: Either phase modulation (G3) or frequency modulation (F3).
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ETS 300 341: July 1995
audio frequency load: The audio frequency load is normally a resistor of sufficient power rating to accept
the maximum audio output power from the equipment under test. The value of the resistor is that stated by
the manufacturer and equal to the impedance of the audio transducer at 1 000 Hz. In some cases it may
be necessary to place an isolating transformer between the output terminals of the receiver under test and
the load.
audio frequency termination: The audio frequency termination is any connection other than the audio
frequency load which may be required for the purpose of testing the receiver. The termination device is
agreed between the manufacturer and the testing authority and details included in the test report. If special
equipment is required then it is provided by the manufacturer.
band-stop filter (for the SINAD meter): The characteristics of the band-stop filter used in the audio
distortion factor meter and SINAD meter are such that, at the output, a 1 000 Hz tone will be attenuated by
at least 40 dB, and at 2 000 Hz the attenuation will not exceed 0,6 dB. The filter characteristic is flat within
0,6 dB over the ranges 20 Hz to 500 Hz and 2 000 Hz to 4 000 Hz. In the absence of modulation the filter
should not cause more than 1 dB attenuation of the total noise power of the audio frequency output of the
receiver under test.
integral antenna: An antenna designed to be connected to the equipment without the use of a 50 Ω
external connector and considered to be part of the equipment. An integral antenna may be fitted internally
or externally to the equipment.
psophometric weighting network: The psophometric weighting network is described in
CCITT Recommendation O.41 [7].
Types of measurements:
conducted measurements: Measurements which are made using a direct connection to the
equipment under test.
radiated measurements: Measurements which involve the absolute measurement of a radiated
field.
Types of station:
base station: Equipment fitted with an antenna socket, for use with an external antenna and
intended for use in a fixed location.
handportable station: Equipment either fitted with an antenna socket or an integral antenna, or
both, normally used on a stand-alone basis, to be carried on a person or held in the hand.
mobile station: Mobile equipment fitted with an antenna socket, for use with an external antenna,
normally used in a vehicle or as a transportable station.
Types of tests:
full tests: In all cases except where qualified as "limited", tests are performed according to this
ETS.
limited tests: The limited tests, subclause 4.1, are as follows:
- receiver average usable sensitivity (field strength), subclause 9.1;
- receiver adjacent channel selectivity, subclause 9.3;
- transmitter frequency error, subclause 8.1;
- transmitter effective radiated power, subclause 8.2;
- transmitter adjacent channel power, subclause 8.3.
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3.2 Symbols
For the purposes of this ETS, the following symbols apply:
Eo Reference field strength (see annex A)
Ro Reference distance (see annex A)
r.m.s root mean square
3.3 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
AR1 (see subclause 4.1.3)
AR2 (see subclause 4.1.3)
dBc dB relative to the carrier power
emf electro-motive force
IF Intermediate Frequency
RF Radio Frequency
Rx Receiver
SINAD (signal + noise + distortion)/(noise + distortion)
Tx Transmitter
VSWR Voltage Standing Wave Ratio
4 General
4.1 Presentation of equipment for testing purposes
Each equipment submitted for type testing shall fulfil the requirements of this ETS on all channels over
which it is intended to operate.
To simplify and harmonise the type testing procedures between the different test laboratories,
measurements shall be performed, according to this ETS, on samples of equipment defined in
subclauses 4.1.1 to 4.1.11.
These subclauses are intended to give confidence that the requirements set out in this ETS have been met
without the necessity of performing measurements on all channels.
4.1.1 Choice of model for type approval
The manufacturer shall provide one or more production model(s) of the equipment, as appropriate, for type
approval testing.
If type approval is given on the basis of tests on a preliminary model, then the corresponding production
models shall be identical in all respects with the preliminary model tested.
4.1.2 Definitions of alignment range and switching range
The manufacturer shall, when submitting equipment for test, state the alignment ranges for the receiver
and the transmitter.
The alignment range is defined as the frequency range over which the receiver and the transmitter can be
programmed and/or realigned to operate, without any physical change of components other than
programmable read only memories or crystals (for the receiver and the transmitter).
The manufacturer shall also state the switching range of the receiver and the transmitter (which may
differ).
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ETS 300 341: July 1995
The switching range is the maximum frequency range over which the receiver or the transmitter can be
operated without reprogramming or realignment. For the purpose of all measurements, the receiver and
transmitter shall be considered separately.
4.1.3 Definition of the categories of the alignment range (AR1 and AR2)
The alignment range falls into one of two categories.
The first category corresponds to a limit of the alignment range, of the receiver and the transmitter, which
is less than 10 % of the highest frequency of the alignment range for equipment operating on frequencies
up to 500 MHz, or less than 5 % for equipment operating above 500 MHz. This category is defined as
AR1.
The second category corresponds to an alignment range of the receiver and transmitter which is greater
than 10 % of the highest frequency of the alignment range for equipment on frequencies up to 500 MHz, or
greater than 5 % for equipment operating above 500 MHz. This category is defined as AR2.
4.1.4 Choice of frequencies
The frequencies for testing shall be chosen by the manufacturer in consultation with the appropriate
authority, in accordance with subclauses 4.1.5 to 4.1.11 and annex C. The manufacturer selects the
frequencies for testing and will ensure that the chosen frequencies are within one or more of the national
bands for which type approval is required.
4.1.5 Testing of single channel equipment of category AR1
In the case of single channel equipment of the category AR1, one sample of the equipment shall be tested.
Full tests shall be carried out on a channel within 100 kHz of the centre frequency of the alignment range.
4.1.6 Testing of single channel equipment of category AR2
In the case of single channel equipment of the category AR2, three samples of the equipment shall be
tested. Tests shall be carried out on a total of three channels.
The frequency of the channel of the first sample shall be within 100 kHz of the highest frequency of the
alignment range.
The frequency of the channel of the second sample shall be within 100 kHz of the lowest frequency of the
alignment range.
The frequency of the channel of the third sample shall be within 100 kHz of the centre frequency of the
alignment range.
Full tests shall be carried out on all three channels.
4.1.7 Testing of two channel equipment of category AR1
In the case of two channel equipment of category AR1, one sample of the equipment shall be tested.
Tests shall be carried out on the two channels.
The frequency of the upper channel shall be within 100 kHz of the highest frequency of the switching range.
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ETS 300 341: July 1995
The frequency of the lower channel shall be within 100 kHz of the lowest frequency of the switching range.
In addition the average of the frequencies of the two channels shall be within 100 kHz of the centre
frequency of the alignment range.
Full tests shall be carried out on the upper channel and limited tests on the lower channel.
4.1.8 Testing of two channel equipment of category AR2
In the case of two channel equipment of the category AR2, three samples of the equipment shall be
tested.
Tests shall be carried out on a total of four channels.
The highest frequency of the switching range of one sample shall be within 100 kHz of the centre frequency
of the alignment range. The frequency of the upper channel shall be within 100 kHz of the highest
frequency of the switching range and the frequency of the lower channel shall be within 100 kHz of the
lowest frequency of the switching range.
Full tests shall be carried out on the upper channel and limited tests on the lower channel.
The frequency of one of the channels of the second sample shall be within 100 kHz of the highest
frequency of the alignment range.
Full tests shall be carried out on this channel.
The frequency of one of the channels of the third sample shall be within 100 kHz of the lowest frequency of
the alignment range.
Full tests shall be carried out on this channel.
4.1.9 Testing of multi channel equipment (more than two channels) of category AR1
In the case of multi channel equipment of the category AR1, one sample of the equipment shall be tested.
The centre frequency of the switching range of the sample shall correspond to the centre frequency of the
alignment range.
Full tests shall be carried out on a frequency within 100 kHz of the centre frequency of the switching range.
Limited tests shall be carried out within 100 kHz of the lowest and also within 100 kHz of the highest
frequency of the switching range.
4.1.10 Testing of multi channel equipment (more than two channels) of category AR2 (i.e.
switching range less than alignment range)
In the case of multi channel equipment of the category AR2, three samples of the equipment shall be
tested.
Tests shall be carried out on a total of five channels.
The centre frequency of the switching range of one sample shall be within 100 kHz of the centre frequency
of the alignment range. The frequency of the upper channel shall be within 100 kHz of the highest
frequency of the switching range and the frequency of the lower channel shall be within 100 kHz of the
lowest frequency of the switching range.
Full tests shall be carried out on the centre channel and limited tests on the upper and lower channel.
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ETS 300 341: July 1995
The frequency of one of the channels of the second sample shall be within 100 kHz of the highest
frequency of the alignment range.
Full tests shall be carried out on this channel.
The frequency of one of the channels of the third sample shall be within 100 kHz of the lowest frequency of
the alignment range.
Full tests shall be carried out on this channel.
4.1.11 Testing of multi channel equipment (more than two channels) of category AR2 (i.e.
switching range equals the alignment range)
In the case of multi channel equipment of the category AR2, one sample of the equipment shall be tested.
The centre frequency of the switching range of the sample shall correspond to the centre frequency of the
alignment range.
Full tests shall be carried out on a frequency within 100 kHz of the centre frequency of the switching range
and within 100 kHz of the lowest and also within 100 kHz of the highest frequency of the switching range.
4.2 Mechanical and electrical design
4.2.1 General
The equipment submitted for type testing by the manufacturer, or his representative, shall be designed,
constructed and manufactured in accordance with sound engineering practice, and with the aim of
minimising harmful interference to other equipment and services.
4.2.2 Controls
Those controls which if maladjusted might increase the interfering potentialities of the equipment shall not
be easily accessible to the user.
4.2.3 Transmitter shut-off facility
When a timer for an automatic shut-off facility is operative, at the moment of the time-out the transmitter
shall automatically be switched off. The activation of the transmitter key shall reset the timer. A shut-off
facility shall be inoperative for the duration of the type test measurements unless it has to remain operative
to protect the equipment.
4.2.4 Marking
The equipment shall be marked in a visible place. This marking shall be legible, tamperproof and durable.
The marking shall be in accordance with the requirements of the National Regulatory Authority and should
include:
- the name of the manufacturer or his trade mark;
- the type number of designation and serial number.
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ETS 300 341: July 1995
4.3 Interpretation of the measurement results
The interpretation of the results recorded in a test report for the measurements described in this ETS shall
be as follows:
- the measured value related to the corresponding limit will be used to decide whether an equipment
meets the requirements of the ETS;
- the measurement uncertainty value for the measurement of each parameter shall be recorded in the
test re
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