SIST EN 302 248 V1.2.1:2014
(Main)Electromagnetic compatibility and Radio spectrum Matters (ERM) - Navigation radar for use on non-SOLAS vessels - Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
Electromagnetic compatibility and Radio spectrum Matters (ERM) - Navigation radar for use on non-SOLAS vessels - Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
The present document applies to non-SOLAS radar equipment. The applicable frequencies of operation of this type of radio equipment are given in table 1. These frequencies are allocated to the radio navigation service, as defined in article 5 of the Radio Regulations [i.6].
The present document is intended to cover the provisions of Directive 1999/5/EC [i.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". In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of Article 3 of the R&TTE Directive [i.1] may apply to equipment within the scope of the present document.
NOTE: A list of such ENs is included on the web site http://www.newapproach.org.
Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) - Navigacijski radar za uporabo na plovilih brez opreme SOLAS - Harmonizirani EN, ki zajema bistvene zahteve člena 3.2 direktive R&TTE
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 302 248 V1.2.1:2014
01-februar-2014
(OHNWURPDJQHWQD]GUXåOMLYRVWLQ]DGHYHY]YH]L]UDGLMVNLPVSHNWURP (50
1DYLJDFLMVNLUDGDU]DXSRUDERQDSORYLOLKEUH]RSUHPH62/$6+DUPRQL]LUDQL(1
NL]DMHPDELVWYHQH]DKWHYHþOHQDGLUHNWLYH5 77(
Electromagnetic compatibility and Radio spectrum Matters (ERM) - Navigation radar for
use on non-SOLAS vessels - Harmonized EN covering the essential requirements of
article 3.2 of the R&TTE Directive
Ta slovenski standard je istoveten z: EN 302 248 Version 1.2.1
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
SIST EN 302 248 V1.2.1:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 302 248 V1.2.1:2014
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SIST EN 302 248 V1.2.1:2014
ETSI EN 302 248 V1.2.1 (2013-11)
Harmonized European Standard
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Navigation radar for use on non-SOLAS vessels;
Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive
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SIST EN 302 248 V1.2.1:2014
2 ETSI EN 302 248 V1.2.1 (2013-11)
Reference
REN/ERM-TG26-106
Keywords
maritime, navigation, radar, radio
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© European Telecommunications Standards Institute 2013.
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SIST EN 302 248 V1.2.1:2014
3 ETSI EN 302 248 V1.2.1 (2013-11)
Contents
Intellectual Property Rights . 5
Foreword . 5
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Symbols and abbreviations . 7
3.1 Symbols . 7
3.2 Abbreviations . 7
4 Technical requirements . 8
4.1 Environmental profile . 8
4.2 Conformance requirements . 8
4.2.1 Radiated emissions . 8
4.2.1.1 Definition . 8
4.2.1.2 Limits . 8
4.2.1.3 Conformance . 9
4.2.2 Operating frequency . 9
4.2.2.1 Definition . 9
4.2.2.2 Limits . 9
4.2.2.3 Conformance . 9
4.2.3 Transmitter pulse power . 9
4.2.3.1 Definition . 9
4.2.3.2 Limits . 9
4.2.3.3 Conformance . 9
4.2.4 Out of band emissions. 9
4.2.4.1 Definition . 9
4.2.4.1.1 Non-FM pulse radar . 9
4.2.4.1.2 FM pulse radars . 10
4.2.4.1.3 Other modulation formats . 10
4.2.4.2 Limits . 10
4.2.4.2.1 Out of band limits . 10
4.2.4.2.2 Out of band limits (excluded types). 11
4.2.4.3 Conformance . 11
4.2.5 Radiated spurious emissions . 12
4.2.5.1 Definition . 12
4.2.5.2 Limits . 12
4.2.5.3 Conformance . 12
5 Testing for compliance with technical requirements . 12
5.1 Environmental conditions for testing . 12
5.1.1 Standard operating mode of the radar equipment . 12
5.1.2 Normal test conditions . 13
5.1.2.1 Normal temperature and humidity . 13
5.1.2.2 Normal test power supply . 13
5.1.2.2.1 AC test power supply . 13
5.1.2.2.2 DC test power supply . 13
5.1.3 Extreme test conditions . 13
5.1.3.1 Extreme temperatures . 13
5.1.3.1.1 Indoor unit . 13
5.1.3.1.2 Outdoor unit . 13
5.1.3.2 Extreme power supply voltage test conditions . 14
5.2 Interpretation of the measurement results . 14
5.3 Essential radio test suites . 14
ETSI
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4 ETSI EN 302 248 V1.2.1 (2013-11)
5.3.1 Radiated emissions . 14
5.3.2 Operating frequency . 15
5.3.3 Transmitter pulse power . 15
5.3.4 Out of band emissions. 15
5.3.5 Radiated spurious emissions . 16
Annex A (normative): HS Requirements and conformance Test specifications Table
(HS-RTT) . 17
Annex B (normative): Radiated measurement . 19
B.1 Test sites and general arrangements for measurements involving the use of radiated fields . 19
B.1.1 Anechoic chamber . 19
B.1.2 Anechoic chamber with a ground plane . 20
B.1.3 OATS . 21
B.1.4 Test antenna . 22
B.1.5 Substitution antenna . 22
B.1.6 Measuring antenna . 23
B.2 Guidance on the use of radiation test sites . 23
B.2.1 Verification of the test site . 23
B.2.2 Preparation of the EUT . 23
B.2.3 Power supplies to the EUT . 23
B.2.4 Volume control setting for analogue speech tests . 23
B.2.5 Range length . 24
B.2.6 Site preparation . 24
Annex C (normative): Transmission power and unwanted emissions of radar systems;
measuring methods . 26
C.1 Indirect connection via the rotating joint. 26
C.2 Maximum permitted out of band emissions power levels . 27
C.3 Maximum permitted spurious emissions power levels . 27
History . 28
ETSI
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5 ETSI EN 302 248 V1.2.1 (2013-11)
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://ipr.etsi.org).
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 (EN) 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 mandate M/284 issued from the European
Commission under Directive 98/34/EC [i.2] as amended by Directive 98/48/EC [i.8].
The title and reference to the present document are intended to be included in the publication in the Official Journal of
the European Union of titles and references of Harmonized Standard under the Directive 1999/5/EC [i.1].
See article 5.1 of Directive 1999/5/EC [i.1] for information on presumption of conformity and Harmonized Standards or
parts thereof the references of which have been published in the Official Journal of the European Union.
The requirements relevant to Directive 1999/5/EC [i.1] are summarized in annex A.
National transposition dates
Date of adoption of this EN: 6 November 2013
Date of latest announcement of this EN (doa): 28 February 2014
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 August 2014
Date of withdrawal of any conflicting National Standard (dow): 31 August 2015
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 [i.1]. The
modular structure is shown in EG 201 399 [i.7].
ETSI
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6 ETSI EN 302 248 V1.2.1 (2013-11)
1 Scope
The present document applies to non-SOLAS radar equipment.
The applicable frequencies of operation of this type of radio equipment are given in table 1. These frequencies are
allocated to the radio navigation service, as defined in article 5 of the Radio Regulations [i.6].
Table 1: Radionavigation service frequencies
Radionavigation service frequencies
Transmit 2 900 MHz to 3 100 MHz
Receive 2 900 MHz to 3 100 MHz
Transmit 9 300 MHz to 9 500 MHz
Receive 9 300 MHz to 9 500 MHz
The present document is intended to cover the provisions of Directive 1999/5/EC [i.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".
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of Article 3 of the R&TTE Directive [i.1] may apply to equipment within the scope of the present
document.
NOTE: A list of such ENs is included on the web site http://www.newapproach.org.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) 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.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] CENELEC EN 60945 (Edition 4 - 2002) + Corrigendum 1 (2010): "Maritime navigation and
radiocommunication equipment and systems - General requirements - Methods of testing and
required test results".
[2] Recommendation ITU-R M.1177-4 (2011): "Techniques for measurement of unwanted emissions
of radar systems".
[3] Recommendation ITU-R SM.1541-4 (2011): "Unwanted emissions in the out-of-band domain".
ETSI
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7 ETSI EN 302 248 V1.2.1 (2013-11)
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.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).
[i.2] Directive 98/34/EC of the European Parliament and of the Council laying down a procedure for
the provision of information in the field of technical standards and regulations and of rules on
information society services.
[i.3] ANSI C63.5 (1988): "American National Standard for Calibration of Antennas Used for Radiated
Emission Measurements in Electromagnetic Interference (EMI) Control".
[i.4] ETSI TR 100 028 (V1.3.1 - all parts): "ElectroMagnetic Compatibility and Radio Spectrum
Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
[i.5] ETSI TR 102 273 (V1.2.1 - all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties".
[i.6] ITU Radio Regulations (2012).
[i.7] ETSI EG 201 399: "Electromagnetic compatibility and Radio spectrum Matters (ERM); A guide to
the production of Harmonized Standards for application under the R&TTE Directive".
[i.8] Directive 98/48/EC of the European Parliament and of the Council of 20 July 1998 amending
Directive 98/34/EC laying down a procedure for the provision of information in the field of
technical standards and regulations.
[i.9] ETSI TR 100 028-2 (V1.4.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics; Part 2".
3 Symbols and abbreviations
3.1 Symbols
For the purposes of the present document, the following symbols apply:
B -40 dB bandwidth
-40
P Transmission mean power
m
P Transmission pulse power
t
t Time
t Transmission pulse duration
p
t Pulse rise time
r
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
CSP Channel Spacing
CW Carrier Wave
DC Direct Current
EBL Electronic Bearing Line
EUT Equipment Under Test
FM Frequency Modulation
ETSI
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8 ETSI EN 302 248 V1.2.1 (2013-11)
FMCW Frequency Modulated Carrier Wave
FTC Fast Time Constant
HS Harmonized Standard
ITU-R International Telecommunications Union-Radiocommunications
LNA Low Noise Amplifier
OATS Open Area Test Site
OOB Out Of Band
PEP Peak Envelope Power
PRT Pulse Repetition Time
RF Radio Frequency
RJ Rotary Joint
SOLAS Safety Of Life At Sea
STC Sensitivity Time Control
VRM Variable Range Marker
VSWR Voltage Standing Wave Radio
4 Technical requirements
4.1 Environmental profile
Tests defined in the present document shall be carried out at representative points within the boundary limits of the
declared operational environmental profile which, as a minimum, shall be that specified in the test conditions contained
in the present document.
As technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient variety
of environmental conditions as specified in the present document to give confidence of compliance for the affected
technical requirements (which shall also be within the boundary limits of the declared operational environmental
profile).
4.2 Conformance requirements
4.2.1 Radiated emissions
4.2.1.1 Definition
Radiated electromagnetic emissions are to be understood as any signals radiated by the completely assembled and
operated radar equipment, other than the operating frequency, with its spectra, which can potentially disturb other
equipment on the ship, such as radio receivers or rate of turn indicators.
4.2.1.2 Limits
In the frequency range 150 kHz to 2 GHz, the measured radio frequency field strength at a distance of 3 m caused by
the EUT shall not exceed the limits shown in table 2.
Table 2: Radiated electromagnetic emission
Frequency range Measuring Bandwidth Limits
150 kHz to 300 kHz 9 kHz 10 mV/m to 316 μV/m (80 dBμV/m to 52 dBμV/m)
300 kHz to 30 MHz 9 kHz
316 μV/m to 50 μV/m (52 dBμV/m to 34 dBμV/m)
30 MHz to 156 MHz 120 kHz 500 μV/m (54 dBμV/m)
and 165 MHz to 2 GHz
156 MHz to 165 MHz 9 kHz
16 μV/m (24 dBμV/m) quasi peak or
32 μV /m (30 dBμV/m) peak
ETSI
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9 ETSI EN 302 248 V1.2.1 (2013-11)
4.2.1.3 Conformance
Conformance tests as defined in clause 5.3.1 shall be carried out.
4.2.2 Operating frequency
4.2.2.1 Definition
The transmitter produces short microwave pulses, which causes a broad frequency spectrum, depending on the pulse
duration and the pulse repetition frequency. The operating frequency is to be understood as the frequency of the
microwave during the transmitting pulse and is represented by the spectral line of highest amplitude.
4.2.2.2 Limits
In all switchable distance ranges and pulse durations the operation frequency of the radar equipment shall have values
in the range of 2 900 MHz to 3 100 MHz or 9 300 MHz to 9 500 MHz.
4.2.2.3 Conformance
Conformance tests as defined in clause 5.3.2 shall be carried out.
4.2.3 Transmitter pulse power
4.2.3.1 Definition
Transmitter pulse power P is to be understood as the mean value of the microwave power during the transmission pulse
t
at the antenna side of the Rotary Joint (RJ). For the arithmetic mean value of the transmitting power, integrated over the
PRT, the abbreviation P will be used.
m
4.2.3.2 Limits
The transmitter pulse power P shall be as specified by the manufacturer +0 dB to -3 dB.
t
4.2.3.3 Conformance
Conformance tests as defined in clause 5.3.3 shall be carried out.
4.2.4 Out of band emissions
4.2.4.1 Definition
Recommendation ITU-R SM.1541-4 [3] gives guidance to calculate the -40 dB bandwidth and to specify the OOB
mask for primary radars in per cent of the -40 dB bandwidth (see figure 1).
4.2.4.1.1 Non-FM pulse radar
The -40 dB bandwidth (B ) for non-FM pulse radars shall be determined with the following established formula by
-40
using the lesser of:
K 64
B = or
−40
t
t ×t
r
where the coefficient K is 6,2 for radars with output power greater than 100 kW and 7,6 for lower-power radars and
radars operating in the radio navigation service in the 2 900 MHz to 3 100 MHz and 9 300 MHz to 9 500 MHz band.
The latter expression applies if the rise time t is less than about 0,0094t when K is 6,2 or about 0,014t when K is 7,6.
r
ETSI
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10 ETSI EN 302 248 V1.2.1 (2013-11)
For ideal rectangular pulses, the spectrum falls off at 20 dB per decade leading to a B of 6,4/t and a 40 dB bandwidth
-40
ten times as large, i.e. 64/t. To discourage the use of pulses with abrupt rise and fall times, no margin is allowed. The
spectra of trapezoidal pulses fall off firstly at 20 dB per decade and then ultimately at 40 dB per decade. If the radio or
rise time to pulse duration exceeds 0,008 the 40 dB points will fall on the 40 dB per decade slope, in which case the
bandwidth B would be:
-40
5,7
B =
−40
t×t
r
e.g. a radar with a fixed 10 ns rise time would result in bandwidth values as shown in table 3.
Table 3: Examples of -40 dB bandwidth of a primary radar
at different pulse durations (rise time = 10 ns)
Pulse duration -40 dB bandwidth B
-40
Short pulse (t = 50 ns) B = 255 MHz
-40
Medium Pulse (t = 200 ns) B = 127 MHz
-40
Long Pulse (t = 500 ns) B = 81 MHz
-40
4.2.4.1.2 FM pulse radars
The -40 dB bandwidth (B ) for FM pulse radars shall be determined with the following formula:
-40
0.53
B = 1.5×{B + π ×[]ln(B ×τ ) ×[]Min(B , B , B ) + Max(B , B , B ) }
−40 c c rise fall rise+ fall rise fall rise+ fall
Where:
1
B =
rise
τ ×t
r
1
B =
fall
τ ×t
f
1
B =
rise+ fall
3
τ × t ×t
r f
B = bandwidth of the frequency deviation (total frequency shift during the pulse generation)
c
τ = pulse length including rise and fall times
And where:
t = pulse rise time
r
t = pulse fall time
f
4.2.4.1.3 Other modulation formats
For all other modulation formats refer to Annex 8 of Recommendation ITU-R SM.1541-4 [3].
4.2.4.2 Limits
4.2.4.2.1 Out of band limits
For all radar types except those excluded in clause 4.2.4.2.2, the roll-off shall be 30dB/d
...
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