ETSI EN 300 433-1 V1.1.3 (2000-12)

SLOVENSKI STANDARD
01-december-2003
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ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Land Mobile Service;
Double Side Band (DSB) and/or Single Side Band (SSB) amplitude modulated citizen's
band radio equipment; Part 1: Technical characteristics and methods of measurement
Ta slovenski standard je istoveten z: EN 300 433-1 Version 1.1.3
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
33.070.01 Mobilni servisi na splošno Mobile services in 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 Standard (Telecommunications series)
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Land Mobile Service;
Double Side Band (DSB) and/or Single Side Band (SSB)
amplitude modulated citizen's band radio equipment;
Part 1: Technical characteristics
and methods of measurement
2 ETSI EN 300 433-1 V1.1.3 (2000-12)
Reference
REN/ERM-RP02-055-1
Keywords
CB,radio,testing
ETSI
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© European Telecommunications Standards Institute 2000.
All rights reserved.
ETSI
3 ETSI EN 300 433-1 V1.1.3 (2000-12)
Contents
Intellectual Property Rights .6
Foreword.6
Introduction.6
1 Scope.8
2 References.8
3 Definitions, abbreviations and symbols .9
3.1 Definitions . 9
3.2 Abbreviations. 9
3.3 Symbols . 9
4 General.10
4.1 Presentation of equipment for testing purposes. 10
4.2 Mechanical and electrical design. 10
4.2.1 General. 10
4.2.2 Controls. 10
4.2.3 Marking. 10
4.3 Interpretation of the measurement results. 10
5 Technical characteristics .11
5.1 Common characteristics. 11
5.1.1 Frequency band. 11
5.1.2 Carrier frequencies and channel numbers. 11
5.1.3 Channel spacing. 11
5.1.4 Multi-channel equipment. 11
5.1.5 Type of modulation. 11
5.1.6 Push-to-talk (ptt) and voice activated switch. 12
5.1.7 Combination with other equipment. 12
5.2 Transmitter parameter limits. 12
5.2.1 Frequency error. 12
5.2.2 Transmitter Radio Frequency (RF) power. 12
5.2.3 Adjacent channel power . 12
5.2.4 Spurious emissions of the transmitter. 13
5.2.5 Transient frequency behaviour of the transmitter . 14
5.2.6 Synthesizers. 14
5.3 Receiver parameter limits . 14
5.3.1 Maximum usable sensitivity. 14
5.3.2 Adjacent channel selectivity. 14
5.3.3 Intermodulation response rejection . 14
5.3.4 Spurious radiation. 15
5.3.5 Spurious response rejection . 15
6 Test conditions, power sources and ambient temperatures .15
6.1 Normal and extreme test conditions . 15
6.2 Test power source. 15
6.3 Normal test conditions. 16
6.3.1 Normal temperature and humidity . 16
6.3.2 Normal test power source. 16
6.3.2.1 Mains voltage and frequency . 16
6.3.2.2 Regulated lead-acid battery power sources on vehicles . 16
6.3.2.3 Other power sources . 16
6.4 Extreme test conditions. 16
6.4.1 Extreme temperatures. 16
6.4.2 Extreme test source voltages . 16
6.4.2.1 Mains voltage. 16
6.4.2.2 Regulated lead-acid battery power sources on vehicles . 16
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4 ETSI EN 300 433-1 V1.1.3 (2000-12)
6.4.2.3 Power sources using other types of battery . 17
6.4.2.4 Other power sources . 17
6.5 Procedure for tests at extreme temperatures. 17
7 General conditions.17
7.1 Arrangements for test signals applied to the receiver input . 17
7.2 Receiver mute or squelch facility. 17
7.3 Receiver rated audio output power. 17
7.4 Transmitter rated RF power . 18
7.5 Normal test modulation . 18
7.5.1 DSB modulation . 18
7.5.2 SSB modulation. 18
7.6 Artificial antenna. 18
7.7 Test fixture. 19
7.8 Arrangement for test signals at the input of the transmitter . 19
7.9 Test site and general arrangements for radiated measurements. 19
8 Method of measurement for transmitter parameters.19
8.1 Frequency error. 19
8.1.1 Definition . 19
8.1.2 Method of measurement. 19
8.2 Transmitter RF power. 20
8.2.1 Definition . 20
8.2.2 Method of measurement (for equipment other than equipment with integral antenna only) . 20
8.2.3 Method of measurement for equipment with integral antenna. 20
8.3 Adjacent channel power . 21
8.3.1 Definition . 21
8.3.2 Method of measurement. 21
8.4 Spurious emissions. 22
8.4.1 Definition . 22
8.4.2 Method of measuring the power level in a specified load,((clause 8.4.1, a)). 22
8.4.3 Method of measuring the effective radiated power,((clause 8.4.1b)) . 22
8.4.4 Method of measuring the effective radiated power,((clause 8.4.1 c)). 23
8.5 Transient frequency behaviour of the transmitter. 23
8.5.1 Definitions. 23
8.5.2 Method of measurement. 24
9 Methods of measurement for receiver parameters.26
9.1 Maximum usable sensitivity . 26
9.1.1 Definition . 26
9.1.2 Method of measurement. 26
9.2 Adjacent channel selectivity . 26
9.2.1 Definition . 26
9.2.2 Method of measurement. 26
9.3 Inter-modulation response rejection . 27
9.3.1 Definition . 27
9.3.2 Method of measurement. 27
9.4 Spurious radiation . 27
9.4.1 Definition . 27
9.4.2 Method of measuring the power level in a specified load,((clause 9.4.1 a)). 28
9.4.3 Method of measuring the effective radiated power,((clause 9.4.1 b)) . 28
9.4.4 Method of measuring the effective radiated power,((clause 9.4.1 c)) . 29
9.5 Spurious response rejection . 29
9.5.1 Definition . 29
9.5.2 Method of measurement. 29
10 Measurement uncertainty.29
Annex A (normative): Radiated measurement .31
A.1 Test sites and general arrangements for measurements involving the use of radiated fields .31
A.1.1 Outdoor test site . 31
A.1.1.1 Test site for hand-portable stations . 31
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5 ETSI EN 300 433-1 V1.1.3 (2000-12)
A.1.2 Test antenna. 32
A.1.3 Substitution antenna . 32
A.1.4 Optional additional indoor site. 33
A.2 Guidance on the use of radiation test sites .33
A.2.1 Measuring distance. 34
A.2.2 Test antenna. 34
A.2.3 Substitution antenna . 34
A.2.4 Artificial antenna. 34
A.2.5 Auxiliary cables . 34
A.3 Further optional alternative indoor test site using an anechoic chamber .34
A.3.1 Example of the construction of a shielded anechoic chamber. 35
A.3.2 Influence of parasitic reflections in anechoic chambers . 35
A.3.3 Calibration of the shielded anechoic chamber. 36
Annex B (normative): Specification for adjacent channel power measurement
arrangements .38
B.1 Power measuring receiver specification.38
B.1.1 IF filter. 38
B.1.2 Variable attenuator . 39
B.1.3 Rms value indicator. 39
B.1.4 Oscillator and amplifier . 39
History .40
ETSI
6 ETSI EN 300 433-1 V1.1.3 (2000-12)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://www.etsi.org/ipr).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM).
The present document is the first part of a multi-part standard, the titles of which are:
Part 1: Technical characteristics and methods of measurement;
Part 2: Harmonized EN covering essential requirements under article 3.2 of R&TTE Directive.
Every EN prepared by ETSI is a voluntary standard. The present document contains text concerning the type approval
of equipment to which it relates. This text does not make the present document mandatory in its status as a standard.
However, the present document can be referenced, wholly or in part, for mandatory application by decisions of
regulatory bodies.
The national regulations on Citizens' Band (CB) equipment that permit the use of other types of modulation or power
levels will not necessarily be affected by the adoption of the present document.
National transposition dates
Date of latest announcement of this EN (doa): 31 March 2001
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 September 2001
Date of withdrawal of any conflicting National Standard (dow): 30 September 2001
Introduction
The present document is intended to specify the minimum performance and the methods of measurement of CB Double
Side Band (DSB) and/or Single Side Band (SSB) amplitude modulated radio equipment as specified in the Scope.
Clause 5 provides the corresponding limits. These limits have been chosen to ensure an acceptable grade of service and
to minimize harmful interference to other equipment and services.
Administrative arrangements (e.g. for type approval, marking, antennas), and conditions for the use of CB DSB and/or
SSB amplitude modulated radios are to be determined by the national regulatory authorities.
The present document may be used by European notified accredited test laboratories for the assessment of the
performance of the equipment. In order to avoid any ambiguity in that assessment, the present document standard
contains instructions for the presentation of equipment for type testing purposes (clause 4), conditions (clauses 6 and 7)
and measurement methods (clauses 8 and 9).
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7 ETSI EN 300 433-1 V1.1.3 (2000-12)
The present document was drafted on the assumption that:
a) the type test measurements would be performed only once in one of the accredited test laboratories, and then
accepted by the various authorities in order to obtain type approval;
b) if equipment available on the market is required to be checked it should be tested in accordance with the methods
specified in the present document.
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8 ETSI EN 300 433-1 V1.1.3 (2000-12)
1 Scope
The present document applies to Double Side Band (DSB) and/or Single Side Band (SSB) amplitude modulated
Citizen's Band (CB) radio equipment operating in the frequency band 26,960 MHz to 27,410 MHz with a channel
spacing of 10 kHz, and intended for analogue speech and/or data transmission.
The present document 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 that may be required by a user, nor does it
necessarily represent the optimum performance achievable.
The present document covers base stations, mobile stations and two categories of hand-portable stations.
The present document is complementary to ETS 300 135 [1] which concerns angle modulated CB radio equipment
(CEPT PR 27).
Any CB equipment covered by the present document that can also work with angle modulation is also required to meet
ETS 300 135 [1].
The present document is based upon existing national standards.
The present document applies to equipment with a socket for an external antenna and to equipment with an integral
antenna.
In the case of equipment that is intended for use with either an integral antenna or an external antenna, the equipment is
specified to be measured as equipment intended for use with an external antenna and specified to meet the appropriate
limits. In addition to this the following characteristics of the transmitter and receiver are specified to be measured as for
equipment for use with an integral antenna and the appropriate limits are defined:
- transmitter carrier power;
- spurious emissions of the transmitter;
- spurious radiation of the receiver.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
[1] ETSI ETS 300 135 (1991): "Radio Equipment and Systems (RES); Angle-modulated Citizens
Band radio equipment (CEPT PR 27 Radio Equipment); Technical characteristics and methods of
measurement".
[2] CISPR Publication No 16-1 (1993): "Specification for radio disturbance and immunity measuring
apparatus and methods - Part 1: Radio disturbance and immunity measuring apparatus".
[3] CCITT Recommendation O.41 (1988): "Psophometer for use on telephone-type circuits".
[4] ETSI ETR 028 (1992): "Radio Equipment and Systems (RES); Uncertainties in the measurement
of mobile radio equipment characteristics".
[5] ETSI ETS 300 680-2: "Radio Equipment and Systems (RES); ElectroMagnetic Compatibility
(EMC) standard for Citizens Band (CB) radio and ancillary equipment (speech and/or non-
speech); Part 2: Double Side Band (DSB) and/or Single Side Band (SSB)".
ETSI
9 ETSI EN 300 433-1 V1.1.3 (2000-12)
[6] Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of the Member
States relating to electromagnetic compatibility.
3 Definitions, abbreviations and symbols
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
base station: Equipment fitted with an antenna socket, for use with an external antenna, and intended for use in a fixed
location
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
hand-portable station: Equipment fitted either with an antenna socket, an integral antenna, or both, normally used on a
stand-alone basis, to be carried on a person or held in the hand
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
Double Side Band (DSB) modulation: DSB amplitude modulation (A3E)
Single Side Band (SSB) modulation: SSB amplitude modulation with suppressed carrier (J3E), using the Upper Side
Band (USB) or the Lower Side Band (LSB)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
A3E DSB amplitude modulation
ac alternating current
CB Citizens' Band
dBA relative sound level in dB incorporating A-weighting curve
DSB Double Side Band
emf electro-motive force
IF Intermediate Frequency
J3E SSB amplitude modulation with suppressed carrier
LSB Lower Side Band
PEP Peak Envelope Power
ptt push-to-talk
RF Radio Frequency
rms root mean square
SINAD SND/ND
SND/N (Signal + Noise + Distortion)/(Noise)
SND/ND (Signal + Noise + Distortion)/(Noise + Distortion)
SSB Single Side Band
USB Upper Side Band
3.3 Symbols
For the purposes of the present document, the following symbols apply:
E reference field strength, (see annex A)
o
R reference distance, (see annex A)
o
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10 ETSI EN 300 433-1 V1.1.3 (2000-12)
4 General
4.1 Presentation of equipment for testing purposes
The manufacturer shall provide a production model of the equipment for type testing.
Tests shall be carried out on the highest and lowest channel within the switching range of the equipment and on a
channel near the middle of the switching range. The switching range of the receiver and transmitter shall be declared by
the manufacturer.
NOTE: The switching range is the maximum frequency range over which the receiver or the transmitter can be
operated without reprogramming or realignment.
In the case of equipment fitted with one channel only, all tests are carried out on that channel.
In the case of equipment fitted with two channels, all tests are carried out on both channels.
4.2 Mechanical and electrical design
4.2.1 General
The equipment submitted by the manufacturer or his representative, shall be designed, constructed and manufactured in
accordance with sound engineering practice, and with the aim to minimize harmful interference to other equipment and
services.
4.2.2 Controls
Those controls which, if maladjusted might increase the interfering potentialities of the equipment or improper
functioning of the transceiver, shall not be accessible to the user.
4.2.3 Marking
The marking shall be in accordance with the requirements of the national regulatory authorities.
4.3 Interpretation of the measurement results
The interpretation of the results recorded in a test report when making the measurements described in the present
document shall be as follows:
a) the measured value related to the corresponding limit shall be used to decide whether an equipment meets the
minimum requirements of the present document;
b) the actual measurement uncertainty for each particular measurement shall be included in the test report;
c) the values, of the actual measurement uncertainty shall be, for each measurement, equal to or less than the
figures given in clause 10 (table of measurement uncertainty).
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11 ETSI EN 300 433-1 V1.1.3 (2000-12)
5 Technical characteristics
5.1 Common characteristics
5.1.1 Frequency band
The maximum operating frequency band shall be from 26,960 MHz to 27,410 MHz. Equipment may operate on one or
more channels up to a maximum of 40 channels.
The operating frequency band specified in the present document is currently allocated for CB equipment in most
European countries. This fact does not prevent the upholding of the other 27 MHz frequency bands allocated to CB
equipment in some countries, nor future extensions which could be decided by CEPT/ERC or by the national regulatory
authorities.
5.1.2 Carrier frequencies and channel numbers.
The allowed carrier frequencies and associated channel numbers are given in table 1. Transmission and reception shall
take place on the same channel (single frequency simplex mode).
Table 1: Carrier frequency and channel number
Carrier frequencies Channel Carrier frequencies Channel Carrier frequencies Channel
(MHz) number (MHz) number (MHz) number
26,965 1 27,135 15 27,295 29
26,975 2 27,155 16 27,305 30
26,985 3 27,165 17 27,315 31
27,005 4 27,175 18 27,325 32
27,015 5 27,185 19 27,335 33
27,025 6 27,205 20 27,345 34
27,035 7 27,215 21 27,355 35
27,055 8 27,225 22 27,365 36
27,065 9 27,235 24 27,375 37
27,075 10 27,245 25 27,385 38
27,085 11 27,255 23 27,395 39
27,105 12 27,265 26 27,405 40
27,115 13 27,275 27
27,125 14 27,285 28
5.1.3 Channel spacing
The channel spacing shall be 10 kHz.
5.1.4 Multi-channel equipment
Multi-channel equipment may be used, provided that such equipment is only designed for the channels indicated in
clause 5.1.2.
Precautions shall be taken against extension of the usable frequency range by the user, e.g. the physical and electrical
design of the channel switching system shall permit operation in not more than the channels indicated in clause 5.1.2.
5.1.5 Type of modulation
Equipment only capable of using A3E or J3E shall be tested according to the present document by using the appropriate
type of modulation.
Equipment capable of using both A3E and J3E shall be tested to the present document in both modes of modulation.
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12 ETSI EN 300 433-1 V1.1.3 (2000-12)
5.1.6 Push-to-talk (ptt) and voice activated switch
Switching between the transmit and receive mode of operation shall be by means of a non-locking push-to-talk (ptt)
switch or by means of a non-locking voice activated switch. Alternatively, a locking ptt or a locking voice activated
switch may be used provided that the transmitter has a time-out of 10 seconds ±5 seconds.
If a voice activated switch is used it shall not respond to ambient noise. This may be implemented by a volume
threshold control. When this threshold is exceeded, the unit shall switch to transmit mode.
For SSB amplitude modulated CB equipment with a microphone jack, the threshold level adjustment shall be accessible
to the user and, for DSB amplitude modulated CB equipment with a microphone jack, the threshold level adjustment
may be accessible to the user.
For equipment without a microphone jack, the threshold level shall be fixed at 80 dBA (at 1 kHz).
All adjustment points that have influence on the threshold and are accessible by the user, shall be safe against
unintended change of setting.
5.1.7 Combination with other equipment
The CB equipment shall not be combined with any other form of transmitting equipment. If it is combined with a
receiving equipment, e.g. a car-radio, it shall not be possible to operate the latter during the transmission mode of the
CB equipment.
Terminals or other connecting points are permitted for the connection of external devices that shall not modulate the
transmitter (e.g. a voice synthesizer device to give an aural indication of the selected channel).
The CB equipment shall not be provided with any terminals or other connection points, internal or external, for
modulating sources other than those required for either a separate or a built-in microphone, or for selective calling
devices.
Equipment fitted with a selective calling device shall meet the requirements of clause 5.2.4 with the device in operation.
5.2 Transmitter parameter limits
5.2.1 Frequency error
For the definition and the measuring method see clause 8.1.
The frequency error shall not exceed 0,6 kHz.
5.2.2 Transmitter Radio Frequency (RF) power
For the definition and the measuring method see clause 8.2.
Both the transmitter RF power (terminated in 50 Ω), and the effective radiated power of an equipment with an integral
antenna, shall not exceed the following limits:
- 1 W (carrier power) for DSB amplitude modulated equipment;
- 4 W Peak Envelope Power (PEP) for SSB amplitude modulated equipment.
Any adjustment circuit that may raise the transmitter RF power above these limits shall not be accessible to the user.
5.2.3 Adjacent channel power
For the definition and measuring method see clause 8.3.
The adjacent channel power shall not exceed a value of 20µW.
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13 ETSI EN 300 433-1 V1.1.3 (2000-12)
5.2.4 Spurious emissions of the transmitter
For the definition and measuring method see clause 8.4.
The power of conducted and radiated spurious emissions shall not exceed 4 nW for the transmitter operating and 2 nW
for the transmitter in the stand-by condition in the following frequency bands:
-47MHzto74MHz;
- 87,5 MHz to 118 MHz;
- 174 MHz to 230 MHz;
- 470 MHz to 862 MHz.
The power of any spurious emissions on any other frequency in the specified ranges shall not exceed the limits given in
tables 2 and 3.
Table 2: Limits for conducted emissions
Frequency range Transmitter operating Transmitter stand-by
9 kHz to 1 GHz 0,25µW (- 36 dBm) 2 nW (- 57 dBm)
1GHzto2GHz 1µW (-30dBm) 20nW (-47dBm)
(or 4 GHz),
(see clause 8.4.2)
Table 3: Limits for radiated emissions
Frequency range Transmitter operating Transmitter stand-by
25 MHz to 1 GHz 0,25µW (- 36 dBm) 2 nW (- 57 dBm)
1GHzto2GHz 1µW (-30dBm) 20nW (-47dBm)
(or 4 GHz),
(see clause 8.4.3)
Table 4 should be used for the measurement bandwidth for conducted and radiated measurements.
Table 4: Measuring bandwidth
Frequency range Bandwidth (- 6 dB)
9 kHz to 150 kHz 200 Hz
>150 kHz to 30 MHz 9 kHz to 10 kHz
>30 MHz to 1 GHz 100 kHz to 120 kHz
>1 GHz 1 MHz
The measurement detector used for this measurement should be a peak detector in accordance with CISPR Publication
No 16-1 [2].
In the case of radiated measurements for hand-portable stations the following conditions shall apply:
- for integral antenna equipment the normal antenna shall be connected;
- for equipment with an external antenna socket an artificial load shall be connected to the socket for the test.
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14 ETSI EN 300 433-1 V1.1.3 (2000-12)
5.2.5 Transient frequency behaviour of the transmitter
This measurement applies only to equipment with an external antenna connector.
For the definition and measurement method see clause 8.5.
The transient periods are shown in clause 8.5, figure 2, and are as follows:
-t 5,0 ms;
-t 20,0 ms;
-t 5,0 ms.
During the periods t and t the frequency difference shall not exceed the value of one channel separation.
1 3
During the period t the frequency difference shall not exceed the value of half a channel separation.
5.2.6 Synthesizers
If, for determining the transmitter frequency, use is made of a synthesizer, the transmitter shall be inhibited when
synchronization is absent.
5.3 Receiver parameter limits
5.3.1 Maximum usable sensitivity
This requirement applies only to equipment with an external antenna connector.
For the definition and measuring method see clause 9.1.
The maximum usable sensitivity shall not exceed an electro motive force (emf) of +12 dBµV for DSB equipment and
+6 dBµV for SSB equipment.
5.3.2 Adjacent channel selectivity
This requirement applies only to equipment with an external antenna connector.
For the definition and measuring method see clause 9.2.
The adjacent channel selectivity shall not be less than 60 dB.
5.3.3 Intermodulation response rejection
This requirement applies only to equipment with an external antenna connector.
For the definition and measurement method see clause 9.3.
The intermodulation response rejection ratio shall not be less than 48 dB.
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15 ETSI EN 300 433-1 V1.1.3 (2000-12)
5.3.4 Spurious radiation
For the definition and the measurement method see clause 9.4.
The power of any spurious radiation shall not exceed the values in tables 5 and 6.
Table 5: Limits for conducted emissions
Frequency range Limit
9 kHz to 1 GHz 2 nW (-57 dBm)
1GHzto2GHz 20 nW (-47 dBm)
(or 4 GHz),
(see clause 9.4.2)
Table 6: Limits for radiated emissions
Frequency range Limit
25 MHzto1GHz 2 nW (-57dBm)
1GHzto2GHz 20 nW (-47 dBm)
(or 4 GHz),
(see clause 9.4.3)
5.3.5 Spurious response rejection
This requirement applies only to equipment with an external antenna connector.
For the definition and the measurement method see clause 9.5.
At any frequency separated from the nominal frequency of the receiver by more than two channels, the spurious
response rejection ratio shall not be less than 48 dB.
6 Test conditions, power sources and ambient
temperatures
6.1 Normal and extreme test conditions
Type tests shall be made under normal test conditions and also, where stated, under extreme test conditions.
In the case of an equipment that can operate also in angle modulation (see ETS 300 135 [1]), the tests under normal
conditions shall be performed at the same time for all types of modulation. The tests under extreme conditions shall
then be performed at the same time for all types of modulation.
6.2 Test power source
During type tests the power source of the equipment shall be replaced by a test power source capable of producing
normal and extreme test voltages as specified in clauses 6.3.2 and 6.4.2.
The internal impedance of the test power source shall be low enough for its effect on the test results to be negligible.
For the purpose of tests, the voltage of the power source shall be measured at the input terminals of the equipment.
If the equipment is provided with a permanently connected power cable, the test voltage shall be that measured at the
point of connection of the power cable to the equipment.
For battery operated equipment, the battery shall be removed and the test power source shall be applied as close to the
battery terminals as practicable.
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16 ETSI EN 300 433-1 V1.1.3 (2000-12)
During tests the power source voltages shall be maintained within a tolerance of ±3 % relative to the voltage at the
beginning of each test.
6.3 Normal test conditions
6.3.1 Normal temper
...