ETSI I-ETS 300 330 ed.1 (1994-12)

SLOVENSKI STANDARD
01-oktober-1999
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Radio Equipment and Systems (RES); Short Range Devices (SRDs); Technical
characteristics and test methods for radio equipment in the frequency range 9 kHz to 25
MHz and inductive loop systems in the frequency range 9 kHz to 30 MHz
Ta slovenski standard je istoveten z: I-ETS 300 330 Edition 1
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN I-ETS 300 330
TELECOMMUNICATION December 1994
STANDARD
Source: ETSI TC-RES Reference: DI/RES-08-0104
ICS: 33.060, 33.060.20
Inductive systems, short range devices, testing
Key words:
Radio Equipment and Systems (RES);
Short Range Devices (SRDs)
Technical characteristics and test methods
for radio equipment in the frequency range 9 kHz to 25 MHz
and inductive loop systems in the frequency range
9 kHz to 30 MHz
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 1994. All rights reserved.
New presentation - see History box

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I- ETS 300 330: December 1994
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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I-ETS 300 330: December 1994
Contents
Foreword .7
Introduction.7
1 Scope .9
2 Normative references.9
3 Definitions, abbreviations and symbols.10
3.1 Definitions .10
3.2 Abbreviations .11
3.3 Symbols .11
4 General requirements .11
4.1 Mechanical and electrical design.11
4.1.1 General.11
4.1.2 Controls .11
4.1.3 Transmitter shut-off facility .11
4.1.4 Marking (equipment identification) .11
4.1.5 Receiver mute or squelch.12
4.2 Declarations by the applicant.12
4.3 Auxiliary test equipment.12
4.4 Interpretation of the measurement results.12
5 Test conditions, power sources and ambient temperatures .12
5.1 Normal and extreme test conditions .12
5.2 External test power source .12
5.3 Normal test conditions .13
5.3.1 Normal temperature and humidity.13
5.3.2 Normal test power source .13
5.3.2.1 Mains voltage.13
5.3.2.2 Regulated lead-acid battery power sources .13
5.3.2.3 Other power sources .13
5.4 Extreme test conditions .13
5.4.1 Extreme temperatures.13
5.4.1.1 Procedure for tests at extreme temperatures.13
5.4.1.1.1 Procedure for equipment designed for
continuous operation.14
5.4.1.1.2 Procedure for equipment designed for
intermittent operation .14
5.4.1.2 Extreme temperature ranges.14
5.4.2 Extreme test source voltages.14
5.4.2.1 Mains voltage.14
5.4.2.2 Regulated lead-acid battery power sources .15
5.4.2.3 Power sources using other types of batteries.15
5.4.2.4 Other power sources .15
6 General conditions .15
6.1 Normal test signals and test modulation.15
6.1.1 Normal test signals for analogue speech .15
6.1.2 Normal test signals for data .15
6.2 Artificial antenna .16
6.3 Test fixture .16
6.4 Test sites and general arrangements for radiated measurements.16
6.5 Modes of operation of the transmitter.16
6.6 Measuring receiver .16
6.7 Pulse modulated signal below 135 kHz .17

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I- ETS 300 330: December 1994
7 Transmitter requirements . 19
7.1 Transmitter definitions. 19
7.1.1 The inductive loop coil transmitters . 19
7.1.2 The large size loop transmitters. 19
7.1.3 Other transmitters. 19
7.1.4 Product classes . 19
7.2 Transmitter carrier output levels. 20
7.2.1 H-field (Class 1). 20
7.2.1.1 Definition . 20
7.2.1.2 Methods of measurement . 20
7.2.1.3 Limits. 20
7.2.2 RF carrier current (Classes 2 and 3) . 21
7.2.2.1 Definition . 21
7.2.2.2 Methods of measurement . 21
7.2.2.3 Limits. 22
7.2.2.3.1 Class 2: . 22
7.2.2.3.2 Class 3 . 22
7.2.3 Radiated E-field (Class 4). 22
7.2.3.1 Definition . 22
7.2.3.2 Methods of measurement . 22
7.2.3.3 Limits. 23
7.3 Operating frequencies. 23
7.3.1 Definition. 23
7.3.2 Frequency error . 23
7.3.2.1 Definition . 23
7.3.2.2 Methods of measurement . 23
7.3.2.3 Limits. 23
7.3.3 Modulation bandwidth. 23
7.3.3.1 Definition . 23
7.3.3.2 Methods of measurement . 23
7.3.3.3 Limit. 24
7.4 Spurious emissions .24
7.4.1 Definition. 24
7.4.2 Conducted spurious emissions, subclause 7.4.1 1 a . 24
7.4.2.1 Class 2 . 24
7.4.2.1.1 Methods of measurement (< 30 MHz) . 24
7.4.2.1.2 Limits. 25
7.4.2.1.3 Methods of measurement (≥ 30 MHz) . 25
7.4.2.1.4 Limits. 25
7.4.2.2 Class 3 . 25
7.4.2.2.1 Methods of measurement . 25
7.4.2.2.2 Limits. 25
7.4.3 Field strength, subclause 7.4.1 1 b and 2. 26
7.4.3.1 Methods of measurement (< 30 MHz) . 26
7.4.3.2 Limits. 26
7.4.4 Effective radiated power, subclause 7.4.1 1 b and 2. 26
7.4.4.1 Methods of measurement (≥ 30 MHz) . 26
7.4.4.2 Limits. 27
8 Receiver requirement . 28
8.1 Receiver spurious radiation. 28
8.1.1 Definition. 28
8.1.2 Methods of measurement. 28
8.1.3 Limits . 28
8.1.3.1 Radiated emissions below 30 MHz:. 28
8.1.3.2 Radiated emissions above 30 MHz:. 28
9 Measurement uncertainty . 29
Annex A (normative): Radiated measurements. 30
A.1 Test sites and general arrangements for measurements involving the use of radiated fields . 30
A.1.1 Outdoor test site. 30

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I-ETS 300 330: December 1994
A.1.1.1 Test support for body worn equipment.30
A.1.1.2 Standard position .31
A.1.2 Test antenna.31
A.1.2.1 Below 30 MHz .31
A.1.2.2 Above 30 MHz.31
A.1.3 Substitution antenna .31
A.1.4 Optional additional indoor site.32
A.2 Guidance on the use of radiation test sites .33
A.2.1 Measuring distance.33
A.2.2 Test antenna.33
A.2.3 Substitution antenna .33
A.2.4 Artificial antenna .33
A.2.5 Auxiliary cables .33
A.3 Further optional alternative indoor test site using an anechoic chamber .33
A.3.1 Example of the construction of a shielded anechoic chamber .34
A.3.2 Influence of parasitic reflections in anechoic chambers .34
A.3.3 Calibration of the shielded RF anechoic chamber.34
Annex B (normative): Transmitter carrier limits, radiated H-Field @ 10 m distance.37
Annex C (normative): Transmitter RF carrier current limit for large size loop .38
Annex D (normative): H-field limit correction factor for generated E-fields .39
Annex E (normative): Spurious limits, radiated H-field at 10 m distances .40
Annex F (normative): Test fixture for measuring carrier and harmonic currents by use of an artificial
antenna.41
Annex G (informative): E-fields in the near field at low frequencies.42
Annex H (informative): Category 2 - customised loop antennas.43
H.1 Carrier currents .43
History.46

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I-ETS 300 330: December 1994
Foreword
This Interim European Telecommunication Standard (I-ETS) has been prepared by the Radio Equipment
and Systems (RES) Technical Committee of the European Telecommunications Standards Institute
(ETSI).
Annex A provides normative specifications concerning radiated measurements.
Annexes B through E are graphical representations of RF carrier current limits, H- and E-field strength
carrier limits and spurious emission limits.
Annex F is normative describing the calculation for customised antennas.
Annexes G and H are informative annexes describing E-fields, and test fixtures.
Proposed announcement date
Date of latest announcement of this I-ETS (doa): 31st March 1995
Introduction
This I-ETS is intended to specify the minimum performance and the methods of measurement of Short
Range Devices (SRDs) as specified in the scope.
Included are methods of measurement for equipment, such as inductive loop systems, fitted with antenna
connector and/or integral antennas. Equipment designed for use with an integral antenna may be supplied
with a temporary or permanent internal connector for the purpose of testing, providing the characteristics
being measured are not expected to be affected.
This I-ETS will be used by accredited test laboratories for the assessment of the performance of the
equipment. Type test measurements will be performed in one of the accredited test laboratories, accepted
by the various National Regulatory authorities in order to grant type testing, provided the National
regulatory requirements are met. This is in compliance with CEPT Recommendation T/R 71-03 [1].
If equipment, which is available on the market, is required to be checked it should be tested in accordance
with the methods of measurement specified in this I-ETS.

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I-ETS 300 330: December 1994
1 Scope
This I-ETS is a general standard for the frequency band 9 kHz to 25 MHz for radio equipment and 9 kHz
to 30 MHz for inductive loop systems, which may be superseded by specific standards covering specific
applications.
This I-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 SRDs as follows:
- inductive loop systems;
- with an antenna connection and/or with an integral antenna;
- for alarms, identification systems, telecommand, telemetry, etc., applications;
- with or without speech.
All types of modulation for radio devices are covered by this I-ETS.
This I-ETS covers fixed stations, mobile stations and portable stations. If the system includes
transponders, these will be measured together with the transmitter.
Two types of measuring methods are defined in this I-ETS due to the varied nature of the types of
equipment used in this band. One method measures the RF carrier current, the other measures the H-
field.
CEPT Recommendation T/R 01-04 [2], on Low Power Devices (LPDs) using an integral antenna,
mentions in the frequency range 9 kHz to 25 MHz two frequency bands, 6,765 to 6,795 MHz and 13,553
to 13,567 MHz, with a field strength limit of 65 dBμV/m measured at 30 m (which is equivalent to
42 dBμA/m at 10 m).
On non-harmonized parameters, national administrations may impose conditions on the type of
modulation, channel/frequency separations, maximum transmitter output power/effective radiated power,
equipment marking and the inclusion of an automatic transmitter shut-off facility, as a condition for the
issue of an individual or general licence, or as a condition for use under licence exemption.
Additional standards or specifications may be required for equipment such as that intended for connection
to the Public Switched Telephone Network (PSTN).
This I-ETS covers requirements for radiated emissions below 30 MHz.
2 Normative references
This I-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 I-
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 71-03: "Procedures for type testing and approval
for radio equipment intended for non-public systems".
[2] CEPT Recommendation T/R 01-04: "Use of Low Power Devices (LPD) using
integral antennas and operating in harmonized frequency bands".
[3] CCITT Recommendation O.153 (1992): "Basic parameters for the R1
measurement of error performance at bit rates below the primary rate".

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I- ETS 300 330: December 1994
[4] CISPR 16-1: "Specification for radio disturbance and immunity measuring
apparatus and methods Part 1: Radio disturbance and immunity measuring
apparatus".
[5] ETR 028: "Radio equipment and Systems (RES); Uncertainties in the
measurement of mobile radio equipment characteristics".
3 Definitions, abbreviations and symbols
3.1 Definitions
For the purposes of this I-ETS the following definitions apply:
Alarm: the use of radio communication for indicating an alarm condition at a distant location.
Artificial antenna: a tuned reduced-radiating dummy load equal to the nominal impedance specified by
the applicant.
Assigned frequency band: the frequency band within which the device is authorised to operate.
Conducted measurements: measurements which are made using a direct connection to the equipment
under test.
Fixed station: equipment intended for use in a fixed location.
H-field test antenna: an electrically screened loop or equivalent antenna, with which the magnetic
component of the field can be measured.
Identification system: equipment consisting of a transmitter(s), receiver(s) (or a combination of the two)
and an antenna(s) to identify a transponder.
Integral antenna: an antenna designed as an indispensable part of the equipment, with or without the use
of an antenna connector.
Magnetic Moment: the product of (Number of coil turns) * (coil area) * (coil current). (Air coils only)
Mobile station: equipment normally installed in a vehicle.
Portable station: equipment intended to be carried.
Radiated measurements: measurements which involve the absolute measurement of a radiated field.
Telecommand: the use of radio communication for the transmission of signals to initiate, modify or
terminate functions of equipment at a distance.
Telemetry: the use of radio communication for indicating or recording data at a distance.
Transponder: a device, that responds to an interrogation signal.

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I-ETS 300 330: December 1994
3.2 Abbreviations
For the purposes of this I-ETS, the following abbreviations apply:
EMC Electro-Magnetic Compatibility
ETR ETSI Technical Report
IF Intermediate Frequency
ISM Industrial, Scientific and Medical
RF Radio Frequency
Rx Receiver
Tx Transmitter
VSWR Voltage Standing Wave Ratio
3.3 Symbols
For the purposes of this I-ETS the following symbols apply:
E Electrical field strength
Eo Reference electrical field strength, (see annex A)
f Frequency
H Magnetic field strength
Ho Reference magnetic field strength, (see annex A)
P Power
R Distance
Ro Reference distance, (see annex A)
t Time
4 General requirements
4.1 Mechanical and electrical design
4.1.1 General
The equipment submitted by the applicant, should be designed, constructed and manufactured in
accordance with sound engineering practice and with the aim of minimising harmful interference to other
equipment and services.
Transmitters and receivers may be individual or combination units, but shall operate with the correct
power source.
4.1.2 Controls
Those controls which, if maladjusted, might increase the interfering potentialities of the equipment shall
not be easily accessible to the user.
4.1.3 Transmitter shut-off facility
If the transmitter is equipped with an automatic transmitter shut-off facility, it should be made inoperative
for the duration of the test.
4.1.4 Marking (equipment identification)
The equipment shall be marked in a visible place. This marking shall be legible and durable.
The marking shall be in accordance with the requirements of the National Regulatory Authority and should
include as a minimum:
- the name of the manufacturer or his trade mark;
- the type designation.
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I- ETS 300 330: December 1994
4.1.5 Receiver mute or squelch
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.
4.2 Declarations by the applicant
When submitting equipment for type testing, the applicant shall supply the necessary information
according to the appropriate application form.
The performance of the equipment submitted for type testing shall be representative of the performance
of the corresponding production model.
4.3 Auxiliary test equipment
All necessary test signal sources and set-up information shall accompany the equipment when it is
submitted for type testing.
4.4 Interpretation of the measurement results
The interpretation of the results recorded on the appropriate test report for the measurements described in
this I-ETS shall be as follows:
- the measured value relating to the corresponding limit shall be used to decide whether an
equipment meets the requirements of the I-ETS;
- the measurement uncertainty value for the measurement of each parameter shall be included in the
test report;
- the recorded value of the measurement uncertainty shall be, for each measurement, equal to, or
lower than, the figures in the table of measurement uncertainty (clause 9).
5 Test conditions, power sources and ambient temperatures
5.1 Normal and extreme test conditions
Type testing shall be made under normal test conditions, and also, where stated, under extreme test
conditions.
The test conditions and procedures shall be as specified in subclauses 5.2 to 5.4.
5.2 External test power source
During type tests, the power source of the equipment shall be replaced by an external test power source
capable of producing normal and extreme test voltages as specified in subclauses 5.3.2 and 5.4.2. The
internal impedance of the external test power source shall be low enough for its effect on the test results
to be negligible. For the purpose of the tests, the voltage of the external test power source shall be
measured at the input terminals of the equipment.
For battery-operated equipment the battery shall be removed and the external test power source shall be
suitably de-coupled and applied as close to the equipment battery terminals as practicable. For radiated
measurements any external power leads should be so arranged so as not to affect the measurements. If
necessary, the external power supply may be replaced with its own internal batteries at the required
voltage; this shall be stated on the test report. For radiated measurements on portable equipment with
integral antenna, fully charged internal batteries should be used. The batteries used should be as supplied
or recommended by the applicant.
If the equipment is powered from an external source, the test voltage shall be that measured at the point
of connection of the power cable to the equipment.

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I-ETS 300 330: December 1994
During tests the test power source voltages shall be within a tolerance < ± 1 % relative to the voltage at
the beginning of each test. The value of this tolerance can be critical for certain measurements. Using a
smaller tolerance will provide a better uncertainty value for these measurements.
If internal batteries are used, at the end of each test the voltage shall be within a tolerance of < ± 5 %
relative to the voltage at the beginning of each test.
5.3 Normal test conditions
5.3.1 Normal temperature and humidity
The normal temperature and humidity conditions for tests shall be any convenient combination of
temperature and humidity within the following ranges:
- temperature +15°C to +35°C;
- relative humidity 20 % to 75 %.
When it is impracticable to carry out tests under these conditions, a note to this effect, stating the ambient
temperature and relative humidity during the tests, shall be added to the test report.
5.3.2 Normal test power source
5.3.2.1 Mains voltage
The normal test voltage for equipment to be connected to the mains shall be the nominal mains voltage.
For the purpose of this I-ETS, the nominal voltage shall be the declared voltage, or any of the declared
voltages, for which the equipment was designed.
The frequency of the test power source corresponding to the ac mains shall be between 49 Hz and 51 Hz.
5.3.2.2 Regulated lead-acid battery power sources
When the radio equipment is intended for operation with the usual types of regulated lead-acid battery
power source, the normal test voltage shall be 1,1 multiplied by the nominal voltage of the battery (e.g. 6
volts, 12 volts etc.).
5.3.2.3 Other power sources
For operation from other power sources or types of battery (primary or secondary), the normal test voltage
shall be that declared by the equipment applicant and approved by the test laboratory. Such values shall
be stated in the test report.
5.4 Extreme test conditions
5.4.1 Extreme temperatures
5.4.1.1 Procedure for tests at extreme temperatures
Before measurements are made the equipment shall have reached thermal balance in the test chamber.
The equipment shall be switched off during the temperature stabilizing period.
In the case of equipment containing temperature stabilisation circuits designed to operate continuously,
the temperature stabilisation circuits shall be switched on for 15 minutes after thermal balance has been
obtained, and the equipment shall then meet the specified requirements.
If the thermal balance is not checked by measurements, a temperature stabilizing period of at least one
hour, or such period as may be decided by the accredited test laboratory, shall be allowed. The sequence
of measurements shall be chosen, and the humidity content in the test chamber shall be controlled so that
excessive condensation does not occur.

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I- ETS 300 330: December 1994
5.4.1.1.1 Procedure for equipment designed for continuous operation
If the applicant states that the equipment is designed for continuous operation, the test procedure shall be
as follows:
- before tests at the upper extreme temperature the equipment shall be placed in the test chamber
and left until thermal balance is attained. The equipment shall then be switched on in the transmit
condition for a period of a half hour after which the equipment shall meet the specified
requirements;
- for tests at the lower extreme temperature, the equipment shall be left in the test chamber until
thermal balance is attained, then switched on for a period of one minute after which the equipment
shall meet the specified requirements.
5.4.1.1.2 Procedure for equipment designed for intermittent operation
If the applicant states that the equipment is designed for intermittent operation, the test procedure shall be
as follows:
- before tests at the upper extreme temperature the equipment shall be placed in the test chamber
and left until thermal balance is attained in the oven. The equipment shall then either:
- transmit on and off according to the applicants declared duty cycle for a period of five
minutes; or
- if the applicant's declared on period exceeds one minute, then:
- transmit in the on condition for a period not exceeding one minute, followed by a period in the
off or standby mode for four minutes; after which the equipment shall meet the specified
requirements.
- for tests at the lower extreme temperature, the equipment shall be left in the test chamber until
thermal balance is attained, then switched to the standby or receive condition for one minute after
which the equipment shall meet the specified requirements.
5.4.1.2 Extreme temperature ranges
For tests at extreme temperatures, measurements shall be made in accordance with the procedures
specified in subclause 5.4.1.1, at the upper and lower temperatures of one of the following ranges:
Category I (General): - 20°C to + 55°C;
Category II (Portable): - 10°C to + 55°C;
Category III (Equipment for normal indoor use):  0°C to + 55°C.
NOTE: The term "Equipment for normal indoor use" is taken to mean the minimum indoor
temperature is equal to or greater than 5°C.
The test report shall state which range is used. The user's manual should include the temperature range
used for type testing.
5.4.2 Extreme test source voltages
5.4.2.1 Mains voltage
The extreme test voltages for equipment to be connected to an ac mains source shall be the nominal
mains voltage ± 10 %.
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I-ETS 300 330: December 1994
5.4.2.2 Regulated lead-acid battery power sources
When the radio equipment is intended for operation from the usual type of regulated lead-acid battery
power sources the extreme test voltages shall be 1,3 and 0,9 multiplied by the nominal voltage of the
battery (6 volts, 12 volts, etc.).
5.4.2.3 Power sources using other types of batteries
The lower extreme test voltages for equipment with power sources using batteries shall be as follows:
- for equipment with a battery indicator, the end point voltage as indicated;
- for equipment without a battery indicator the following end point voltages shall be used:
- for the Leclanché or the lithium type of battery:
0,85 multiplied by the nominal voltage of the battery;
- for the nickel-cadmium type of battery:
0,9 multiplied the nominal voltage of the battery.
For other types of battery or equipment incorporating a low power detection circuit, the lower extreme test
voltage for the discharged condition shall be declared by the equipment applicant.
No upper extreme test voltages apply.
5.4.2.4 Other power sources
For equipment using other power sources, or capable of being operated from a variety of power sources,
the extreme test voltages shall be those agreed between the equipment applicant and the accredited test
laboratory and shall be recorded in the test report.
6 General conditions
6.1 Normal test signals and test modulation
The test modulating signal is a signal which modulates a carrier and is dependent upon the type of
equipment under test and also the measurement to be performed. Modulation test signals only apply to
products with an external modulation connector. For equipment without an external modulation connector,
normal operating modulation shall be used.
6.1.1 Normal test signals for analogue speech
A-M1: a 1 000 Hz tone;
A-M2: a 1 250 Hz tone.
The level of the test signals A-M1 and A-M2 shall be adjusted to produce a deviation of 12 % of the
channel separation or if a deviation of 12 % cannot be achieved, the maximum deviation as declared by
the applicant.
In the case of amplitude modulation, the modulation depth shall be 60 % or if 60 % cannot be achieved
the maximum modulation depth as declared by the applicant.
6.1.2 Normal test signals for data
D-M2: a test signal representing a pseudo-random bit sequence of at least 511 bits in accordance with
CCITT Recommendation 0.153 [3]. This sequence shall be continuously repeated. If the sequence cannot
be continuously repeated, the actual method used shall be stated on the test report.

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I- ETS 300 330: December 1994
D-M3: a test signal shall be agreed between the accredited test laboratory and the applicant in case
selective messages are used and are generated or decoded within the equipment.
The normal level of the test signal D-M3 shall produce a deviation of 20 % of the channel separation or
any other value as declared by the applicant as the normal operating level.
6.2 Artificial antenna
A tuned reduced radiating load connected to the antenna connector shall be equal to the nominal load of
the equipment specified by the applicant.
6.3 Test fixture
A test fixture shall be supplied by the applicant to enable extreme temperature measurements to be
made, where applicable. The test fixture shall couple to the generated electromagnetic field from the
equipment under test without disturbing the operation of the said device. The test fixture shall be provided
with a 50 ohm standard connector, where the generated field can be sampled.
The test fixture shall be fully described by the applicant.
The test laboratory shall calibrate the test fixture by carrying out the required field measurements at
normal temperatures at the prescribed test site and then by repeating the same measurements on the
equipment under test using the test fixture for all identified frequency components.
The test fixture is only required for extreme temperature measurements and shall be calibrated only with
the equipment under test.
6.4 Test sites and general arrangements for radiated measurements
For guidance on radiation test sites and detailed descriptions of radiated measurement arrangements see
annex A.
6.5 Modes of operation of the transmitter
For the purpose of the measurements according to this I-ETS there should preferably be a facility to
operate the transmitter in an unmodulated state. The method of achieving an unmodulated carrier
frequency or special types of modulation patterns may also be decided by agreement between the
applicant and the accredited test laboratory, and shall be described in the test report. It may involve
suitable temporary internal modifications of the equipment under test. If it is not possible to provide an
unmodulated carrier then this shall be stated in the test report.
When an input to the transmitter is available for the purpose of type testing, the normal test signal shall be
applied to the input of the transmitter under test with the normal input device disconnected (e.g.
microphone).
6.6 Measuring receiver
The term "measuring receiver" refers to a selective voltmeter or a spectrum analyser. The bandwidth of
the measuring receiver shall be according to CISPR 16-1 [4]. Signals below 135 kHz shall be measured
using the peak detector of the measuring receiver; above 135 kHz the quasi-peak detector shall be
applied, see table 1.
Table 1
Frequency: (f) Detector type: Bandwidth:
9 kHz ≤ f < 30 kHz Peak 200 - 300 Hz
Peak 9 - 10 kHz
30 kHz ≤ f < 135 kHz
Quasi Peak 9 -10 kHz
135 kHz ≤ f < 30 MHz
30 MHz ≤ f ≤ 1000 MHz Quasi Peak 100 - 120 kHz

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I-ETS 300 330: December 1994
6.7 Pulse modulated signal below 135 kHz
For pulse modulated signals, measurements in the band 9 kHz to 135 kHz, using a peak detector on the
measuring receiver (see subclause 6.6), the level shall be calculated as follows:
for t < 25 ms: L = M - 6 dB;
on peak
for 25 ms ≤ t < 100 ms: L = M + 10 log t /100 dB;
on peak on
for t ≥ 100 ms: L = M dB;
on peak
where:
L = the relevant limit applicable (see clause 7);
M = measured peak value;
peak
t = the total time in a 100 ms window that the equipment is transmitting.
on
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I-ETS 300 330: December 1994
Transmitter requirements, overview
ETSI standard Product type Product classes Test m ethod Test m ethod Test m ethod
radiated spurious
conducted spurious
carrier
Short range devices
H-field @ 10m
Loop coil product
9kHz to 30 MHz
H-field @ 10m
with
subclause 7.4.3.1
Clause 7
integral antenna
subclause 7.2.1.2
& 7.4.4.1
C lass 1 subclause 7.1.4
Loop coil product
H-field @ 10m
H-field @ 10m
Loop coil
with ext. antenna
subclause 7.4.3.1
transm itters
supplied w/equip.
subclause 7.2.1.2
9 kHz to 30 MHz
& 7.4.4.1
Class 1 subclause 7.1.4
subclause 7.1.1
Current and
Loop coil product
Current into
H-field @ 10m
with ext. antenna not power into
artificial antenna
subclause 7.4.3.1
supplied w/equip. (see note) artificial antenna
Class 2 subclause 7.1.4 subclause 7.2.2.2 Subclause 7.4.2.1.1 & 7.4.2.1.3
& 7.4.4.1
Large size loop
Power into
Large size loop
H-field @ 10m
Current into
transm itters
artificial antenna
with external
artificial antenna
subclause 7.4.3.1
9 kHz to 135 kHz
custom ised antenna
subclause 7.2.2.2 subclause 7.4.2.2.1
& 7.4.4.1
subclause 7.1.2
Class 3 subclause 7.1.4
E-field transm itters H-field @ 10m
E-field
H-field @ 10m
w/antenna supplied
subclause 7.4.3.1
Transmitters
with the equipment subclause 7.2.3.2
9 kHz to 25 MHz
& 7.4.4.1
C lass 4 subclause 7.1.4
subclause 7.1.3
The artificial antenna supplied by the manufacturer shall be equivalent to antenna
NOTE:
with the maximum magnetic moment intended to be used with the product
Figure 1
Page 19
I-ETS 300 330: December 1994
7 Transmitter requirements
Where the transmitter is designed with an adjustable carrier power, all parameters shall be measured
using the highest output level as declared by the applicant. The equipment shall then be adjusted to the
lowest setting, as declared by the applicant, and the spurious emissions measurement shall be repeated
(see subclause 7.4).
When making transmitter tests on equipment designed for intermittent operation, the duty cycle of the
transmitter, as declared by the applicant on the application form, shall not be exceeded. The actual duty
cycle used shall be stated on the test report.
7.1 Transmitter definitions
Transmitters are divided into classes based on their radiated field and antenna type to be used.
Transmitters type tested without an antenna may allow the customer to use his own loop antenna design
based on the manufacturers design guidelines. The user's manual shall include the guidelines for the
design of the antennas.
7.1.1 The inductive loop coil transmitters
These transmitters are characterised by:
- loop coil antenna area, A < 30 m²;
- antenna coil with one or multiple turns.
7.1.2 The large size loop transmitters
These transmitters are cha
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