SIST EN 300 328 V1.7.1:2006

SLOVENSKI STANDARD
01-december-2006
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Electromagnetic compatibility and Radio spectrum Matters (ERM); Wideband
transmission systems; Data transmission equipment operating in the 2,4 GHz ISM band
and using wide band modulation techniques; Harmonized EN covering essential
requirements under article 3.2 of the R&TTE Directive
Ta slovenski standard je istoveten z: EN 300 328 Version 1.7.1
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
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.

Harmonized European Standard (Telecommunications series)

Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Wideband transmission systems;
Data transmission equipment operating
in the 2,4 GHz ISM band and
using wide band modulation techniques;
Harmonized EN covering essential requirements
under article 3.2 of the R&TTE Directive

2 ETSI EN 300 328 V1.7.1 (2006-10)

Reference
REN/ERM-TG11-008
Keywords
data, ISM, LAN, mobile, radio, regulation, spread
spectrum, SRD, testing, transmission, UHF
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3 ETSI EN 300 328 V1.7.1 (2006-10)
Contents
Intellectual Property Rights.6
Foreword.6
Introduction .6
1 Scope.7
2 References.7
3 Definitions, symbols and abbreviations .8
3.1 Definitions.8
3.2 Symbols.9
3.3 Abbreviations.9
4 Technical specifications.10
4.1 Environmental profile.10
4.2 Modulation.10
4.2.1 FHSS modulation.10
4.2.2 DSSS and other forms of modulation .10
4.3 Technical requirements.10
4.3.1 Maximum transmit power.10
4.3.1.1 Definition.10
4.3.1.2 Limit.11
4.3.2 Maximum e.i.r.p. spectral density.11
4.3.2.1 Definition.11
4.3.2.2 Limit.11
4.3.3 Frequency range.11
4.3.3.1 Definition.11
4.3.3.2 Limit.11
4.3.4 Frequency hopping requirements.11
4.3.4.1 Dwell time.11
4.3.4.1.1 Definition.11
4.3.4.1.2 Limit.11
4.3.4.2 Hopping channel.12
4.3.4.2.1 Definition.12
4.3.4.2.2 Limit.12
4.3.4.3 Hopping sequence.12
4.3.4.3.1 Definition.12
4.3.4.3.2 Limit.12
4.3.5 Medium access protocol .12
4.3.5.1 Definition.12
4.3.5.2 Requirement.12
4.3.6 Transmitter spurious emissions.12
4.3.6.1 Definition.12
4.3.6.2 Limit.13
4.3.7 Receiver spurious emissions.13
4.3.7.1 Definition.13
4.3.7.2 Limit.13
5 Essential radio test suites.14
5.1 Product information.14
5.2 Requirements for the test modulation.14
5.3 Test conditions, power supply and ambient temperatures.14
5.3.1 Normal and extreme test conditions.14
5.3.2 Power sources.15
5.3.2.1 Power sources for stand-alone equipment.15
5.3.2.2 Power sources for plug-in radio devices .15
5.3.3 Normal test conditions .15
5.3.3.1 Normal temperature and humidity .15
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4 ETSI EN 300 328 V1.7.1 (2006-10)
5.3.3.2 Normal power source .15
5.3.3.2.1 Mains voltage.15
5.3.3.2.2 Lead-acid battery power sources used on vehicles.15
5.3.3.2.3 Other power sources .16
5.3.4 Extreme test conditions.16
5.3.4.1 Extreme temperatures.16
5.3.4.2 Extreme power source voltages.16
5.3.4.2.1 Mains voltage.16
5.3.4.2.2 Lead-acid battery power sources used on vehicles.16
5.3.4.2.3 Power sources using other types of batteries.16
5.3.4.2.4 Other power sources .16
5.3.4.3 Procedure for tests at extreme temperatures.17
5.4 Choice of equipment for test suites .17
5.4.1 Choice of model.17
5.4.2 Presentation.17
5.4.3 Choice of operating frequencies .17
5.5 Testing of host connected equipment and plug-in radio devices.18
5.5.1 The use of a host or test jig for testing Plug-In radio devices.18
5.5.2 Testing of combinations.18
5.5.2.1 Alternative A: General approach for combinations.18
5.5.2.2 Alternative B: For host equipment with a plug-in radio device .18
5.5.2.3 Alternative C: For combined equipment with a plug-in radio device .18
5.5.2.4 Alternative D: For equipment with multiple radios .18
5.5.2.4.1 The spurious emissions from each radio can be identified .19
5.5.2.4.2 The spurious emissions from each radio cannot be identified .19
5.6 Interpretation of the measurement results .19
5.7 Test procedures for essential radio test suites.19
5.7.1 General.19
5.7.2 Equivalent isotropic radiated power .20
5.7.2.1 Radiated measurements.20
5.7.2.2 Conducted measurements.20
5.7.3 Maximum e.i.r.p. spectral density.21
5.7.3.1 Option 1 : Using a spectrum analyser with an average detector and/or PSD measurement feature.22
5.7.3.2 Option 2: Using a spectrum analyser with a narrow IF output port .23
5.7.4 Frequency range.24
5.7.4.1 Option 1: Using a spectrum analyser average detector .25
5.7.4.2 Option 2: Using a spectrum analyser video averaging mode .26
5.7.5 Transmitter spurious emissions.26
5.7.6 Receiver spurious emissions.28
Annex A (normative): HS Requirement and conformance Test specifications Table (HS-
RTT).30
Annex B (normative): Test sites and arrangements for radiated measurements.32
B.1 Test sites.32
B.1.1 Open air test sites .32
B.1.2 Anechoic chamber.33
B.1.2.1 General.33
B.1.2.2 Description.33
B.1.2.3 Influence of parasitic reflections.33
B.1.2.4 Calibration and mode of use .34
B.2 Test antenna.35
B.3 Substitution antenna.36
Annex C (normative): General description of measurement .37
C.1 Conducted measurements and use of test fixture .37
C.2 Radiated measurements.37
C.3 Substitution measurement.38
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5 ETSI EN 300 328 V1.7.1 (2006-10)
Annex D (informative): Bibliography.39
Annex E (informative): The EN title in the official languages .40
History .42

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6 ETSI EN 300 328 V1.7.1 (2006-10)
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://webapp.etsi.org/IPR/home.asp).
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 Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM).
The present document has been produced by ETSI in response to a mandate from the European Commission issued
under Council Directive 98/34/EC [3] (as amended) laying down a procedure for the provision of information in the
field of technical standards and regulations.
The present document is intended to become a Harmonized Standard, the reference of which will be published in the
Official Journal of the European Communities referencing the Directive 1999/5/EC [1] of the European Parliament and
of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual
recognition of their conformity ("the R&TTE Directive [1]").
Requirements and their corresponding test specifications relevant to Directive 1999/5/EC [1] are given in annex A.

National transposition dates
Date of adoption of this EN: 22 September 2006
Date of latest announcement of this EN (doa): 31 December 2006
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2007
Date of withdrawal of any conflicting National Standard (dow): 30 June 2008

Introduction
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the R&TTE Directive. The modular
structure is shown in EG 201 399 [4].
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7 ETSI EN 300 328 V1.7.1 (2006-10)
1 Scope
The present document applies to Wide Band Data Transmission equipment which is used in wireless local area
networks. Such networks provide high speed data communications in between devices connected to the wireless
infrastructure. The present document also applies to ad-hoc networking where these devices communicate directly with
each other, without the use of a wireless infrastructure. The equipment uses a medium access protocol designed to
facilitate spectrum sharing with other devices in the wireless network.
Wide Band Data Transmission equipment covered by the present document is operated in accordance with the ERC
Decision (01)07 or ERC Recommendation 70.03 annex 3.
Examples of Wide Band Data Transmission equipment are equipment using IEEE 802.11 (see bibliography) RLANs,
HomeRF™ and Bluetooth™ wireless technologies, Zigbee™, etc.
This equipment can be used in fixed, mobile or portable applications, e.g.:
• stand-alone radio equipment with or without their own control provisions;
• plug-in radio devices intended for use with or within a variety of host systems, e.g. personal computers,
hand-held terminals, etc.;
• plug-in radio devices intended for use within combined equipment, e.g. cable modems, set-top boxes, access
points, etc.;
• combined equipment or a combination of a plug-in radio device and a specific type of host equipment.
This radio equipment is capable of operating in all or any part of the frequency band shown in table 1.
Table 1: Industrial, Scientific and Medical (ISM) frequency band
Direction of transmission Industrial, Scientific and Medical (ISM) frequency band
Transmit/Receive 2,4 GHz to 2,4835 GHz

The present document is intended to cover the provisions of Directive 1999/5/EC [1] (R&TTE Directive) article 3.2,
which states that "… radio equipment shall be so constructed that it effectively uses the spectrum allocated to
terrestrial/space radio communications and orbital resources so as to avoid harmful interference".
NOTE: A list of such ENs is included on the web site http://www.newapproach.org.
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.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
[1] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications terminal equipment and the mutual recognition of their
conformity (R&TTE Directive).
ETSI
8 ETSI EN 300 328 V1.7.1 (2006-10)
[2] ETSI TR 100 028-1 (V1.4.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics; Part 1".
[3] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a
procedure for the provision of information in the field of technical standards and regulations.
[4] ETSI EG 201 399 (V2.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
A guide to the production of candidate Harmonized Standards for application under the R&TTE
Directive".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in the R&TTE Directive [1] and the following
apply:
adaptive frequency hopping: mechanism that allows a frequency hopping device to adapt to its environment by
identifying channels that are being used and excluding them from the list of available channels
chip: unit of modulation used in direct sequence spread spectrum modulation
chip rate: number of chips per second
chip sequence: sequence of chips with defined length and defined chip polarities
combined equipment: any combination of non-radio equipment that requires a plug-in radio device to offer full
functionality
direct sequence spread spectrum modulation: 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
NOTE: The transmitted bandwidth is determined by the chip rate and the modulation scheme.
environmental profile: range of environmental conditions under which equipment within the scope of EN 300 328 is
required to comply with the provisions of EN 300 328
fixed station: equipment intended for use in a fixed location and fitted with one or more antennae
NOTE: The equipment may be fitted with either antenna socket(s) or integral antenna(e) or both.
frequency hopping spread spectrum modulation: 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
NOTE: 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.
frequency range: range of operating frequencies over which the 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
NOTE: The equipment may be fitted with one or more antennae. The equipment may be fitted with either antenna
socket(s) or integral antenna(e) 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: antenna designed to be connected to the equipment without the use of a standard connector and
considered to be part of the equipment
NOTE: An integral antenna may be fitted internally or externally to the equipment.
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9 ETSI EN 300 328 V1.7.1 (2006-10)
mobile station: equipment normally used in a vehicle or as a transportable station
NOTE: The equipment may be fitted with one or more antennae. The equipment may be fitted with either antenna
socket(s) or integral antenna(e) or both.
multi-radio equipment: radio, host or combined equipment using more than one radio transceiver
operating frequency: nominal frequency at which the equipment can be operated; this is also referred to as the
operating centre frequency
NOTE: Equipment may be adjustable for operation at more than one operating frequency.
plug-in radio device: radio equipment module intended to be used with or within host, combined or multi-radio
equipment, using their control functions and power supply
power envelope: frequency/power contour within which the useful RF power is generated
smart antenna systems: equipment that combines multiple antenna elements, transmit and/or receive chains with a
signal processing function to optimise its radiation and/or reception capabilities (e.g. techniques such as spatial
multiplexing, beam forming, cyclic delay diversity, MIMO, etc.)
spread spectrum modulation: modulation technique in which the energy of a transmitted signal is spread throughout a
relatively large portion of the frequency spectrum
stand-alone radio equipment: equipment that is intended primarily as communications equipment and that is normally
used on a stand-alone basis
wide band modulation: wide band modulation is considered to include FHSS or DSSS modulation as well as other
forms of modulation that meet the emission requirements as defined in EN 300 328
3.2 Symbols
For the purposes of the present document, the following symbols apply:
dBm dB relative to 1 milliwatt
dBW dB relative to 1 Watt
GHz GigaHertz
Hz Hertz
kHz kiloHertz
MHz MegaHertz
mW milliWatt
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
AFH Adaptive Frequency Hopping
BW BandWidth
DSSS Direct Sequence Spread Spectrum
e.i.r.p. equivalent isotropically radiated power
EMC ElectroMagnetic Compatibility
FHSS Frequency Hopping Spread Spectrum
IF Intermediate Frequency
ISM Industrial, Scientific and Medical
OFDM Orthogonal Frequency Division Multiplexing
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
Tx Transmitter
UUT Unit Under Test
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10 ETSI EN 300 328 V1.7.1 (2006-10)
4 Technical specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be stated by the supplier. The equipment shall comply with all the technical requirements of the
present document at all times when operating within the boundary limits of the required operational environmental
profile.
4.2 Modulation
The manufacturer shall state the modulation characteristics of the equipment to be tested. For the purpose of deciding
which level of power density applies to the equipment, the present document defines two categories of equipment:
• equipment conforming to the stated characteristics of FHSS modulation (see clause 4.2.1); and
• equipment not conforming to these characteristics.(see clause 4.2.2).
4.2.1 FHSS modulation
FHSS modulation shall:
either:
a) make use of at least 15 well defined, non-overlapping hopping channels separated by the channel bandwidth as
measured at 20 dB below peak power;
or if capable of adaptive frequency hopping:
b) at least be capable of operating over a minimum of 90 % of the band specified in table 1, from which at any
given time a minimum of 20 channels or hopping channels shall be used.
For both cases, the minimum channel separation shall be 1 MHz, while the dwell time per channel shall not exceed
0,4 s.
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 the above constraints shall be tested according to the requirements for FHSS modulation.
4.2.2 DSSS and other forms of modulation
For the purposes of the present document, other forms of modulation which do not satisfy the constraints of the
specification given in clause 4.2.1, shall be considered equivalent to DSSS modulation. Systems using these other forms
of modulation shall be considered equivalent to DSSS systems and shall be tested according to the requirements for
DSSS modulation.
4.3 Technical requirements
4.3.1 Maximum transmit power
4.3.1.1 Definition
The maximum transmit power is defined as the maximum isotropic radiated power of the equipment.
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11 ETSI EN 300 328 V1.7.1 (2006-10)
4.3.1.2 Limit
The equivalent isotropic radiated power (e.i.r.p.) shall be equal to or less than -10 dBW (100 mW). This limit shall
apply for any combination of power level and intended antenna assembly.
4.3.2 Maximum e.i.r.p. spectral density
4.3.2.1 Definition
The maximum e.i.r.p. spectral density is defined as the highest e.i.r.p. level in Watts per Hertz generated by the
transmitter within the power envelope.
4.3.2.2 Limit
For wide band modulations other then FHSS (e.g. DSSS, OFDM, etc.), the maximum e.i.r.p. spectral density is limited
to 10 mW per MHz.
4.3.3 Frequency range
4.3.3.1 Definition
The frequency range of the equipment is determined by the lowest and highest frequencies occupied by the spectrum
envelope.
f is the highest frequency of the spectrum envelope: it is the frequency furthest above the frequency of maximum
H
power where the e.i.r.p. spectral density drops below the level of -80 dBm/Hz (-30 dBm if measured in a 100 kHz
bandwidth).
f is the lowest frequency of the spectrum envelope; it is the frequency furthest below the frequency of maximum
L
power where the e.i.r.p. spectral density drops below the level of -80 dBm/Hz (or -30 dBm if measured in a 100 kHz
bandwidth).
For a given operating frequency, the width of the spectrum envelope is (f - f ). In equipment that allows adjustment or
H L
selection of different operating frequencies, the power envelope takes up different positions in the allocated band. The
frequency range is determined by the lowest value of f and the highest value of f resulting from the adjustment of the
L H
equipment to the lowest and highest operating frequencies.
4.3.3.2 Limit
For all equipment the frequency range shall lie within the band 2,4 GHz to 2,4835 GHz (f > 2,4 GHz and
L
f < 2,4835 GHz).
H
4.3.4 Frequency hopping requirements
The requirements in this clause are only applicable to equipment using Frequency Hopping Spread Spectrum (FHSS)
modulation.
4.3.4.1 Dwell time
4.3.4.1.1 Definition
The dwell time is the time spent at a particular frequency during any single hop.
4.3.4.1.2 Limit
The maximum dwell time shall be 0,4 s.
ETSI
12 ETSI EN 300 328 V1.7.1 (2006-10)
4.3.4.2 Hopping channel
4.3.4.2.1 Definition
A hopping channel is any of the centre frequencies defined within the hopping sequence of a FHSS system.
4.3.4.2.2 Limit
Non-adaptive Frequency Hopping systems shall make use of non-overlapping hopping channels separated by the
channel bandwidth as measured at 20 dB below peak power.
The hopping channels defined within a hopping sequence shall be at least 1 MHz apart (channel separation).
4.3.4.3 Hopping sequence
4.3.4.3.1 Definition
The hopping sequence of a FHSS system is the sequence of the hopping channels used by the equipment.
4.3.4.3.2 Limit
Non-adaptive Frequency Hopping systems shall make use of a hopping sequence(s) that contains at least 15 hopping
channels.
Adaptive Frequency Hopping systems shall make use of a hopping sequence(s) that is capable of operating over a
minimum of 90 % of the band specified in table 1, from which at any given time a minimum of 20 hopping channels
shall be used.
Each hopping 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.
4.3.5 Medium access protocol
4.3.5.1 Definition
A medium access protocol is a mechanism designed to facilitate spectrum sharing with other devices in a wireless
network.
4.3.5.2 Requirement
A medium access protocol shall be implemented by the equipment.
4.3.6 Transmitter spurious emissions
4.3.6.1 Definition
Transmitter spurious emissions are emissions outside the frequency range(s) of the equipment as defined in
clause 4.3.3.1 when the equipment is in transmit mode and/or in standby mode.
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13 ETSI EN 300 328 V1.7.1 (2006-10)
4.3.6.2 Limit
The spurious emissions of the transmitter shall not exceed the values in tables 2 and 3 in the indicated bands.
Table 2: Transmitter limits for narrowband spurious emissions
Frequency range Limit when operating Limit when in standby
30 MHz to 1 GHz -36 dBm -57 dBm
above 1 GHz to 12,75 GHz -30 dBm -47 dBm
1,8 GHz to 1,9 GHz -47 dBm -47 dBm
5,15 GHz to 5,3 GHz
The above limit values apply to narrowband emissions, e.g. as caused by local oscillator leakage. The measurement
bandwidth for such emissions may be as small as necessary to achieve a reliable measurement result.
Wideband emissions shall not exceed the values given in table 3.
Table 3: Transmitter limits for wideband spurious emissions
Frequency range Limit when operating Limit when in standby
30 MHz to 1 GHz -86 dBm/Hz -107 dBm/Hz
above 1 GHz to 12,75 GHz -80 dBm/Hz -97 dBm/Hz
1,8 GHz to 1,9 GHz -97 dBm/Hz -97 dBm/Hz
5,15 GHz to 5,3 GHz
4.3.7 Receiver spurious emissions
4.3.7.1 Definition
Receiver spurious emissions are emissions at any frequency when the equipment is in received mode.
4.3.7.2 Limit
The spurious emissions of the receiver shall not exceed the values in tables 4 and 5 in the indicated bands.
Table 4: Narrowband spurious emission limits for receivers
Frequency range Limit
30 MHz to 1 GHz -57 dBm
above 1 GHz to 12,75 GHz -47 dBm

The above limit values apply to narrowband emissions, e.g. as caused by local oscillator leakage. The measurement
bandwidth for such emissions may be as small as necessary to get a reliable measurement result.
Wideband emissions shall not exceed the values given in table 5.
Table 5: Wideband spurious emission limits for receivers
Frequency range Limit
30 MHz to 1 GHz -107 dBm/Hz
above 1 GHz to 12,75 GHz -97 dBm/Hz

ETSI
14 ETSI EN 300 328 V1.7.1 (2006-10)
5 Essential radio test suites
5.1 Product information
The following information is necessary in order to carry out the test suites:
a) the type of modulation used: FHSS modulation, DSSS modulation or any other type of modulation
(see clause 4.2);
b) 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 (see clause 4.2.1), and whether or not
Adaptive Frequency Hopping (AFH) is used;
c) the operating frequency range(s) of the equipment and, where applicable, band(s) of operation
(see clause 4.3.3);
d) the type of the equipment, for example: stand-alone equipment, plug-in radio device, combined equipment,
etc. (see also clause 3.1);
e) the extreme operating conditions that apply to the equipment (see also clause 5.3.4);
f) the intended combination(s) of the radio equipment power settings and one or more antenna assemblies and
their corresponding e.i.r.p levels (see also clause 5.4.2);
g) in case of smart antenna systems, the number of transmit chains and the number of receive chains and whether
the system uses a symmetrical or asymmetrical power distribution across the transmit chains;
h) the nominal voltages of the stand-alone radio equipment or the nominal voltages of the host equipment or
combined equipment in case of plug-in devices;
i) the test modulation used (see also clause 5.2);
j) the access protocol implemented by the equipment.
5.2 Requirements for the test modulation
The test modulation used should be representative of normal use of the equipment. Where the equipment is not capable
of continuous RF transmission, the test modulation shall be such that:
• the generated RF signal is the same for each transmission;
• transmissions occur regularly in time;
• sequences of transmissions can be repeated accurately.
The same test modulation shall be used for all measurements on the same equipment.
For frequency hopping systems the equipment should allow the hop frequencies required by the present document to be
selected.
5.3 Test conditions, power supply and ambient temperatures
5.3.1 Normal and extreme test conditions
Unless otherwise stated in the test procedures for essential radio test suites (see clause 5.7), the tests defined in the
present document shall be carried out at representative points within the boundary limits of the declared operational
environmental profile (see clause 5.3.4).
ETSI
15 ETSI EN 300 328 V1.7.1 (2006-10)
Where technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient
variety of environmental conditions (within the boundary limits of the declared operational environmental profile) to
give confidence of compliance for the affected technical requirements.
5.3.2 Power sources
5.3.2.1 Power sources for stand-alone equipment
During testing, 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 5.3.3.2 and 5.3.4.2. 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.
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.
During tests the power source voltages shall be maintained within a tolerance of ±1 % relative to the voltage at the
beginning of each test. The value of this tolerance is critical to po
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