SIST ETS 300 328 E1:2005

Radio Equipment and Systems (RES); Wideband transmission systems; Technical characteristics and test conditions for data transmission equipment operating in the 2,4 GHz ISM band and using spread spectrum modulation techniques

Specifies limits, test conditions, methods of measurement or verific- ation, measurement uncertainties, for in-band pk power transmitted, in -band spectral density, of  spurious emissions, agregrate bit rate for use in type approval tests for wideband data systems operating om non- protected & non-interference basis, as covered by CEPT T/R 10-01.

Radijska oprema in sistemi (RES) – Širokopasovni prenosni sistemi - Tehnične karakteristike in preskušalni pogoji za opremo za prenos podatkov, ki deluje v frekvenčnem pasu 2,4 GHz ISM in uporablja modulacijsko tehniko z razpršenim spektrom

General Information

• Status: Published
• Publication Date: 31-Jan-2005
• ICS: 33.060.20 - Receiving and transmitting equipment
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Feb-2005
• Due Date: 01-Feb-2005
• Completion Date: 01-Feb-2005
• Ref Project: ETSI ETS 300 328 ed.1 (1994-11) - Radio Equipment and Systems (RES); Wideband transmission systems; Technical characteristics and test conditions for data transmission equipment operating in the 2,4 GHz ISM band and using spread spectrum modulation techniques

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 328 E1:2005
01-februar-2005
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Radio Equipment and Systems (RES); Wideband transmission systems; Technical
characteristics and test conditions for data transmission equipment operating in the 2,4
GHz ISM band and using spread spectrum modulation techniques
Ta slovenski standard je istoveten z: ETS 300 328 Edition 1
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
SIST ETS 300 328 E1:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 328 E1:2005

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SIST ETS 300 328 E1:2005
EUROPEAN ETS 300 328
TELECOMMUNICATION November 1994
STANDARD
Source: ETSI TC-RES Reference: DE/RES-02-09
ICS: 33.060.20
Land mobile radio, data transmission, wideband, spread spectrum, type testing
Key words:
Radio Equipment and Systems (RES)
Wideband data transmission systems
Technical characteristics and test conditions
for data transmission equipment
operating in the 2,4 Ghz ISM band and using
spread spectrum modulation techniques
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 - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
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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ETS 300 328: November 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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ETS 300 328: November 1994
Contents
Foreword.5
Introduction .5
1 Scope .7
2 Normative references .8
3 Definitions and abbreviations.8
3.1 Definitions.8
3.2 Abbreviations.9
4 General . 10
4.1 Manufacturer declarations. 10
4.2 Presentation of equipment for type testing . 10
4.2.1 Choice of model . 10
4.2.2 Presentation . 11
4.2.3 Choice of operating frequencies . 11
4.3 Design. 11
4.3.1 General . 11
4.3.2 Controls. 11
4.4 Marking. 11
4.5 Interpretation of the measurement results . 11
5 Technical characteristics. 11
5.1 Modulation. 11
5.1.1 FHSS modulation. 12
5.1.2 DSSS and other forms of modulation . 12
5.2 Transmitter parameter limits . 12
5.2.1 Frequency range. 12
5.2.2 Effective radiated power. 12
5.2.3 Peak power density. 12
5.2.4 Spurious emissions. 13
5.3 Receiver parameter limits . 14
5.3.1 General . 14
5.3.2 Spurious emissions. 14
6 Test conditions. 14
6.1 Normal and extreme test conditions. 14
6.2 Power sources. 14
6.2.1 Power sources for stand-alone equipment. 14
6.2.2 Power sources for plug-in radio devices. 15
6.3 Normal test conditions . 15
6.3.1 Normal temperature and humidity . 15
6.3.2 Normal power source . 15
6.3.2.1 Mains voltage. 15
6.3.2.2 Regulated lead-acid battery power sources used on
vehicles. 15
6.3.2.3 Other power sources. 15
6.4 Extreme test conditions . 16
6.4.1 Extreme temperatures . 16
6.4.2 Extreme power source voltages . 16
6.4.2.1 Mains voltage. 16

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ETS 300 328: November 1994
6.4.2.2 Regulated lead-acid battery power sources used on
vehicles.16
6.4.2.3 Power sources using other types of batteries.16
6.4.2.4 Other power sources . 16
6.4.3 Procedure for tests at extreme temperatures .17
6.4.3.1 Procedure for equipment designed for continuous
operation.17
6.4.3.2 Procedure for equipment designed for intermittent
operation.17
6.5 Testing of host connected equipment and plug-in radio devices.17
6.5.1 Alternative A: combined equipment .17
6.5.2 Alternative B: use of a test jig and three hosts .17
6.6 Test data sequence.18
7 Methods of measurement.19
7.1 General .19
7.2 Measurements of transmitter parameters.19
7.2.1 Frequency range of equipment using FHSS modulation.19
7.2.2 Frequency range of equipment using other forms of modulation.20
7.2.3 Effective radiated power.20
7.2.4 Peak power density. 22
7.2.5 Spurious emissions.23
7.3 Measurements of receiver parameters.24
7.3.1 General . 24
7.3.2 Spurious emissions.24
8 Measurement uncertainty values.25
Annex A (normative): Test sites and arrangements for radiated measurements .26
A.1 Test sites.26
A.1.1 Open air test sites.26
A.1.2 Anechoic chamber.27
A.1.2.1 General . 27
A.1.2.2 Description.27
A.1.2.3 Influence of parasitic reflections. 27
A.1.2.4 Calibration and mode of use.27
A.2 Test antenna.30
A.3 Substitution antenna.30
A.4 Informative references .30
Annex B (normative): General description of measurement methods.31
B.1 Conducted measurements and use of test fixture .31
B.2 Radiated measurements .31
B.3 Substitution measurement .32
History .33

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ETS 300 328: November 1994
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 the adjustment of the measurement equipment and of the
equipment to be measured in order to achieve correct results.
Transposition dates
Date of latest announcement of this ETS (doa): 28 February 1995
Date of latest publication of new National Standard 31 August 1995
or endorsement of this ETS (dop/e): 31 August 1995
Date of withdrawal of any conflicting National Standard (dow):
Introduction
Wideband radio data transmission systems are rapidly being introduced into a variety of commercial and
industrial applications and the technology employed by these systems is still developing.
This ETS may 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),
testing conditions (clause 6) and methods of measurement (clause 7).
This ETS assumes that:
- the type test measurements performed in an accredited test laboratory in one CEPT country would
be accepted by the Type Approval Authority in another country provided that the national regulatory
requirements are met (see CEPT Recommendation T/R 71-03 [3]);
- if equipment available on the market is required to be checked it would be tested in accordance with
the methods of measurement specified in this ETS.

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1 Scope
This European Telecommunication Standard (ETS) covers equipment referred to in CEPT
Recommendation T/R 10-01 [1]. This ETS covers the minimum technical characteristics for radio data
transmission equipment having the following technical parameters:
- wideband radio modulation techniques;
- aggregate bit rates in excess of 250 kbits/s;
- operation in the 2,4 to 2,4835 GHz Industrial, Scientific and Medical (ISM) band;
- effective radiated power of up to - 10 dBW (100 mW);
- power density of up to - 10 dBW (100 mW) per 100 kHz for frequency hopping modulation;
- power density of up to - 20 dBW (10 mW) per 1 MHz for other forms of spread spectrum
modulation.
This ETS only addresses the transceivers, transmitters and receivers of equipment offered for testing.
The equipment offered for testing may be used in fixed, mobile or portable applications, e.g.:
- stand-alone radio equipment with or without their own control provisions;
- combined radio equipment where the radio part is fully integrated within other types of equipment;
- plug-in radio devices intended for use with a variety of host systems, e.g. personal computers.
The equipment may be fitted with integral antennas and/or antenna connectors.
CEPT Recommendation T/R 10-01 [1] defines the total power and power density limits for systems using
spread spectrum modulation together with a minimum aggregate bit rate of 250 kbits/s. The
Recommendation does not address the details of these modulation techniques. Therefore, this ETS does
not cover the design or operation of the equipment being tested but describes a common set of
measurements to be applied to various types of such equipment, including those employing Frequency
Hopping Spread Spectrum (FHSS) modulation and Direct Sequence Spread Spectrum (DSSS) modulation.
CEPT Recommendation T/R 10-01 [1] specifies that spread spectrum modulation be used and it gives
power density values for FHSS and DSSS modulation. This ETS specifies the minimum technical
parameters of FHSS modulation such that it can be clearly differentiated from other types of modulation,
including DSSS modulation.
CEPT Recommendation T/R 01-04 [2] defines limits of spurious emissions for a variety of radio equipment;
these limits are used in this ETS as appropriate.
This ETS describes measurements for operating frequency range(s), effective radiated power and power
density as well as spurious emissions for transmitters and receivers.
The measurement methods have been adapted from ETR 027 [4] where possible.
This ETS specifies test site characteristics, test conditions, equipment calibration and methods of
measurement.
This ETS is a general standard which may be superseded by specific standards covering specific
applications.
Additional standards or specifications may be required for equipment such as that intended for connection
to the Public Switched Telephone Network (PSTN) and/or other Public Data Networks (PDN).

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2 Normative references
This ETS incorporates 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 10-01: "Wideband Data Transmission in the 2,4
GHz to 2,5 GHz ISM band".
[2] CEPT Recommendation T/R 01-04: "Low Power Devices".
[3] CEPT Recommendation T/R 71-03: "Procedures for Type Testing and Approval
for Radio Equipment intended for non-public systems".
[4] ETR 027: "Radio Equipment and Systems; Methods of measurement for mobile
radio equipment".
[5] ETR 028: "Radio Equipment and Systems; Uncertainties in the measurement of
mobile radio equipment characteristics".
[6] EN 55022: "Limits and methods of measurement of radio interference
characteristics of information technology equipment".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS the following definitions apply:
aggregate bit rate: The bit rate at the air interface (see point D in figure 1) including protocol overhead
where applicable and excluding the effects of signal spreading.
Figure 1: Parameters related to the aggregate bit rate
chip: A unit of modulation used in direct sequence spread spectrum modulation.
chip rate: The number of chips per second.
chip sequence: A sequence of chips with defined length and defined chip polarities.
Direct Sequence Spread Spectrum (DSSS) modulation: A form of modulation where a combination of
data to be transmitted and a known code sequence (chip sequence) is used to directly modulate a carrier,
e.g. by phase shift keying. The transmitted bandwidth is determined by the chip rate and the modulation
scheme.

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fixed station: Equipment intended for use in a fixed location and fitted with one or more antennas. The
equipment may be fitted with either antenna socket(s) or integral antenna(s) or both.
Frequency Hopping Spread Spectrum (FHSS) modulation: A spread spectrum technique in which the
transmitter signal occupies a number of frequencies in time, each for some period of time, referred to as
the dwell time. Transmitter and receiver follow the same frequency hop pattern. The frequency range is
determined by the lowest and highest hop positions and the bandwidth per hop position (see subclause
5.2.1).
frequency range: The range of operating frequencies over which equipment can be adjusted.
hand-portable station: Equipment normally used on a stand-alone basis and to be carried by a person or
held in the hand. The equipment may be fitted with one, or more antennas. The equipment may be fitted
with either antenna socket(s), or integral antenna(s), or both.
host: Host equipment is any equipment which has complete user functionality when not connected to the
radio equipment part and to which the radio equipment part provides additional functionality and to which
connection is necessary for the radio equipment part to offer functionality.
integral antenna: An antenna designed to be connected to the equipment without the use of a standard
50 ohm connector and considered to be part of the equipment. An integral antenna may be fitted internally
or externally to the equipment.
manufacturer: "Manufacturer" is understood to refer to the manufacturer, or applicant of equipment
offered for testing.
mobile station: Equipment normally used in a vehicle or as a transportable station. The equipment may be
fitted with one, or more antennas. The equipment may be fitted with either antenna socket(s), or integral
antenna(s), or both.
operating frequency: The nominal frequency at which equipment is operated; this is also referred to as
the operating centre frequency. Equipment may be adjustable for operation at more than one operating
frequency.
plug-in radio device: Equipment intended to be used within a host, using its housing, control functions and
power supply.
power envelope: The frequency/power contour within which the useful RF power is generated.
spread spectrum modulation: A modulation technique in which the energy of a transmitted signal is
spread throughout a relatively large portion of the frequency spectrum.
stand-alone equipment: Equipment that is normally used on a stand-alone basis and that includes the
radio unit and normally but not necessarily control logic and/or power supply contained within its housing.
3.2 Abbreviations
For the purposes of this ETS the following abbreviations apply:
ac alternating current
dBW dB relative to 1 Watt power
dBm dB relative to 1 milliWatt power
DSSS Direct Sequence Spread Spectrum
eirp equivalent isotropically radiated power
FHSS Frequency Hopping Spread Spectrum
ISM Industrial, Scientific and Medical
ITE Information Technology Equipment
RF Radio Frequency
Rx Receiver
Tx Transmitter

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4 General
4.1 Manufacturer declarations
The manufacturer shall declare the following specific characteristics of the equipment:
a) the aggregate bit rate (see subclause 3.1 for the definition);
b) the type of modulation used: FHSS modulation, DSSS modulation or any other type of spread
spectrum modulation (see subclause 5.1);
c) where applicable, the duty cycle of the transmitter (Tx on/(Tx on + Tx off)) as well as the Tx on and
Tx off times);
d) where FHSS modulation is used: the number of hopping channels, the dwell time per channel and
the maximum time between two instances of use of the same channel; these values shall fall within
the specifications given in subclause 5.1.1;
e) the operating frequency range(s) of the equipment and, where applicable, band(s) of operation (see
subclause 5.2.1);
f) the type of the equipment, for example: stand-alone or plug-in radio device (see subclause 3.1). For
plug-in radio devices the applicable types of host should be declared as well (see also subclause
6.5);
g) the extreme operating conditions that apply to the equipment offered for testing;
h) the gain of the antenna assembly(ies) intended for normal use, i.e. the transfer function between the
conducted RF power and eirp;
i) the nominal ac/dc power voltages of the radio equipment.
Where the equipment to be tested can be equipped with one or more antennas, the manufacturer shall
declare and provide for testing the antenna(s) with the equipment; all of these antennas shall be included in
the radiated measurements described in this ETS. The characteristics of the antenna assembly(ies)
intended for normal use as specified by the manufacturer will be included in the user documentation
supplied with the equipment.
4.2 Presentation of equipment for type testing
4.2.1 Choice of model
The manufacturer shall offer one or more production models or equivalent preliminary models, as
appropriate, for type testing. If type approval is given on the basis of tests on (a) preliminary model(s),
then the corresponding production models shall be identical to the tested models in all respects relevant for
the purposes of this ETS, except, where applicable, for the antenna.
Due to the low levels of RF signal and the wideband modulations used in this type of equipment, radiated
RF power measurements are imprecise. Conducted measurements are much more precise; in combination
with the declared antenna assembly gain(s) adequate assurance of the RF characteristics can be
achieved. Therefore, equipment offered for testing shall provide a 50 ohm connector for conducted RF
power measurements. Where this is not possible, the manufacturer shall provide a documented test fixture
that converts the radiated signal into a conducted signal into a 50 ohm termination. Alternatively, radiated
measurements shall be performed.
Where manufacturers submit equipment with an integral antenna only, two sets of equipment shall be
provided, one set fitted with an RF test connector and one set fitted with the integral antenna.

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4.2.2 Presentation
Stand-alone equipment shall be offered complete with any ancillary equipment needed for testing. The
manufacturer shall declare the frequency range(s), the range of operating conditions and power
requirements as applicable in order to establish the appropriate test conditions.
Plug-in radio devices may be offered for testing together with a suitable test jig and/or host equipment (see
subclause 6.5). The manufacturer shall declare the frequency range(s), the range of operating conditions
and power requirements that are applicable in order to establish the appropriate test conditions.
4.2.3 Choice of operating frequencies
Where equipment can be adjusted to, or operated at, different operating frequencies, a minimum of three
operating frequencies shall be chosen such that the lower and higher limits of the operating range(s), as
well as the middle of the operating range(s), of the equipment are covered, (see subclause 5.2.1).
4.3 Design
4.3.1 General
The equipment submitted by the manufacturer, shall be designed, constructed and manufactured in
accordance with sound engineering practice, and with the aim of minimizing harmful interference to other
equipment and services.
4.3.2 Controls
Those controls (of the radio part) which, if maladjusted, might increase the interfering potential of the
equipment shall not be easily accessible to the user.
4.4 Marking
The marking shall be in accordance with the requirements of CEPT Recommendation TR 10-01 [1].
4.5 Interpretation of the measurement results
The interpretation of the test results recorded in a test report for the measurements described in this ETS
shall be as follows:
a) the measured value related to the corresponding limit shall be used to decide whether an equipment
meets the requirements of the ETS;
b) the actual measurement uncertainty of the test laboratory carrying out the measurements, for each
particular measurement, in accordance with ETR 028 [5], shall be recorded in the test report.
The recorded value of the measurement uncertainty shall be, for each measurement, equal to or lower
than the figures in clause 8 (measurement uncertainty).
5 Technical characteristics
5.1 Modulation
The manufacturer shall declare the modulation characteristics of the equipment to be tested. For the
purpose of deciding which level of power density applies to equipment offered for testing, this ETS defines
two categories of equipment:
- equipment conforming to the stated characteristics of FHSS modulation (see subclause 5.1.1); and

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- equipment not conforming to these characteristics.
The latter category includes equipment using DSSS modulation (see subclause 5.1.2).
5.1.1 FHSS modulation
FHSS modulation shall make use of at least 20 well defined, non-overlapping channels or hopping positions
separated by the channel bandwidth as measured at 20 dB below peak power. The dwell time per channel
shall not exceed 0,4 seconds. While the equipment is operating (transmitting and/or receiving) each
channel of the hopping sequence shall be occupied at least once during a period not exceeding four times
the product of the dwell time per hop and the number of channels. Systems that meet these constraints
shall be tested according to the requirements for FHSS modulation.
5.1.2 DSSS and other forms of modulation
For the purposes of this ETS, other forms of spread spectrum modulation which do not satisfy the
constraints of the specification given in subclause 5.1.1, shall be considered equivalent to DSSS
modulation. Systems using these other forms of modulation, shall be tested according to the requirements
for DSSS modulation.
5.2 Transmitter parameter limits
5.2.1 Frequency range
The frequency range of the equipment is determined by
...