SIST EN 302 609 V2.2.1:2020
(Main)Short Range Devices (SRD) - Radio equipment for Euroloop communication systems - Harmonised Standard for access to radio spectrum
Short Range Devices (SRD) - Radio equipment for Euroloop communication systems - Harmonised Standard for access to radio spectrum
The present document specifies technical characteristics and methods of measurements for radio transmitters and
receivers used in the Euroloop communications system. The system is used in railway systems.
The present document applies to the following equipment:
1) The On-Board Equipment (OBE) transmitting the tele-powering to wake-up the Trackside Equipment and
receiving the Euroloop signal. The OBE comprises a receiver fitted with a dedicated antenna.
2) The Trackside Equipment receiving the tele-powering and transmitting the Euroloop signal. The antenna is a
leaky feeder cable that is always installed in an inner or outer foot of a rail.
NOTE 1: For the purposes of the present document term "Euroloop" will be used as a descriptive term of the
Euroloop communication system as defined by the specifications [1] and [2] of the UNISIG consortia.
The Euroloop transmission system operates in frequency bands listed in table 1 in accordance with the EC Decision
2013/752/EU [i.2], and ERC Recommendation 70-03 [i.3], annex 4.
The present document contains requirements to demonstrate that radio equipment both effectively uses and supports the
efficient use of radio spectrum in order to avoid harmful interference.
Naprave kratkega dosega (SRD) - Radijska oprema za komunikacijske sisteme Euroloop - Harmonizirani standard za dostop do radijskega spektra
General Information
Standards Content (Sample)
Draft ETSI EN 302 609 V2.2.0 (2020-07)
HARMONISED EUROPEAN STANDARD
Short Range Devices (SRD);
Radio equipment for Euroloop communication systems;
Harmonised Standard for access to radio spectrum
2 Draft ETSI EN 302 609 V2.2.0 (2020-07)
Reference
REN/ERM-TG28-550
Keywords
harmonised standard, radio, SRD, testing
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3 Draft ETSI EN 302 609 V2.2.0 (2020-07)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Definition of terms, symbols and abbreviations . 10
3.1 Terms . 10
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Transmitter conformance requirements . 11
4.2.1 OBE TX field strength and Transmitter mask . 11
4.2.1.1 Applicability. 11
4.2.1.2 Limits . 11
4.2.1.3 Conformance . 11
4.2.2 OBE unwanted emissions . 12
4.2.2.1 Applicability. 12
4.2.2.2 Limits . 12
4.2.2.3 Conformance . 12
4.2.3 Trackside Equipment transmitter field strength . 12
4.2.3.1 Applicability. 12
4.2.3.2 Limits . 12
4.2.3.3 Conformance . 12
4.2.4 Trackside Equipment transmitter mask. 12
4.2.4.1 Applicability. 12
4.2.4.2 Limit . 13
4.2.4.3 Conformance . 13
4.3 Receiver Conformance requirements . 13
4.3.1 OBE Receiver sensitivity . 13
4.3.1.1 Applicability. 13
4.3.1.2 Limits . 13
4.3.1.3 Conformance . 13
4.3.2 OBE Receiver error behaviour at high wanted input signal level . 13
4.3.2.1 Applicability. 13
4.3.2.2 Limits . 14
4.3.2.3 Conformance . 14
4.3.3 OBE Receiver distortion immunity . 14
4.3.3.1 Applicability. 14
4.3.3.2 Limits . 14
4.3.3.3 Conformance . 14
4.3.4 OBE Receiver inter-modulation immunity . 14
4.3.4.1 Applicability. 14
4.3.4.2 Limits . 14
4.3.4.3 Conformance . 14
4.3.5 OBE Receiver co-channel rejection . 14
4.3.5.1 Applicability. 14
4.3.5.2 Limits . 14
4.3.5.3 Conformance . 14
4.3.6 OBE Receiver blocking . 14
4.3.6.1 Applicability. 14
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4 Draft ETSI EN 302 609 V2.2.0 (2020-07)
4.3.6.2 Limits . 15
4.3.6.3 Conformance . 15
4.3.7 OBE Receiver dynamic receiver performance . 15
4.3.7.1 Applicability. 15
4.3.7.2 Limits . 15
4.3.7.3 Conformance . 15
4.3.8 OBE Receiver multipath dynamic performance . 15
4.3.8.1 Applicability. 15
4.3.8.2 Limits . 15
4.3.8.3 Conformance . 15
4.3.9 OBE Receiver tolerable centre frequency error . 15
4.3.9.1 Applicability. 15
4.3.9.2 Limits . 15
4.3.9.3 Conformance . 15
4.3.10 OBE Receiver tolerable chip rate error . 16
4.3.10.1 Applicability. 16
4.3.10.2 Limits . 16
4.3.10.3 Conformance . 16
4.3.11 OBE Receiver tolerable MTIE of the chip rate . 16
4.3.11.1 Applicability. 16
4.3.11.2 Limits . 16
4.3.11.3 Conformance . 16
4.3.12 Trackside Equipment Receiver sensitivity . 16
4.3.12.1 Applicability. 16
4.3.12.2 Limits . 16
4.3.12.3 Conformance . 16
5 Testing for compliance with technical requirements . 16
5.1 Environmental conditions for testing . 16
5.2 General conditions for testing . 17
5.2.1 Test conditions . 17
5.2.2 Test power source . 17
5.2.3 Normal test conditions . 17
5.2.3.1 Normal temperature and humidity . 17
5.2.3.2 Normal test power source . 17
5.2.3.2.1 Mains voltage . 17
5.2.3.2.2 Other power sources . 17
5.2.4 Extreme test conditions . 17
5.2.5 Choice of equipment for test suites . 18
5.2.5.1 Choice of model . 18
5.2.5.2 Measuring receiver . 18
5.3 Void . 18
6 Performance Test Suites . 18
6.1 Conformance methods of measurement for transmitters . 18
6.1.1 OBE Tx field strength and Transmitter Mask . 18
6.1.2 OBE Unwanted Emission . 19
6.1.3 Trackside Equipment field strength measurements . 19
6.1.4 Trackside Equipment transmitter conducted measurements . 20
6.2 Conformance Methods of Measurement for Receiver . 20
6.2.1 OBE receiver sensitivity . 20
6.2.2 OBE receiver error behaviour at high wanted input signal level . 20
6.2.3 OBE receiver distortion immunity . 20
6.2.4 OBE receiver inter-modulation immunity . 20
6.2.5 OBE Receiver co-channel rejection . 20
6.2.6 OBE Receiver blocking . 21
6.2.7 OBE receiver dynamic receiver performance . 21
6.2.8 OBE receiver multipath dynamic performance. 21
6.2.9 OBE receiver tolerable centre frequency error . 21
6.2.10 OBE Receiver tolerable chip rate error . 21
6.2.11 OBE Receiver tolerable MTIE of the chip rate . 21
6.2.12 Trackside Equipment receiver sensitivity . 21
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5 Draft ETSI EN 302 609 V2.2.0 (2020-07)
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 22
Annex B (normative): Field strength measurements along the Euroloop . 24
Annex C (normative): Radiated measurements . 25
C.1 Test sites and general arrangements for measurements involving the use of radiated fields . 25
C.1.0 General . 25
C.1.1 Anechoic chamber . 25
C.1.2 Anechoic chamber with a conductive ground plane . 26
C.1.3 Open Area Test Site (OATS) . 28
C.1.3.0 General . 28
C.1.3.1 Measurements below 30 MHz . 28
C.1.3.2 Measurements above 30 MHz . 28
Annex D (normative): H-field measurements and limits at 3 m and 30 m . 30
D.0 General . 30
D.1 Limits for measurements at 30 m distance . 30
D.2 Limits for measurements at 3 m distance . 31
Annex E (informative): Maximum measurement uncertainty . 33
Annex F (informative): Selection of receiver parameters. 34
F.1 OBE Receiver parameters as listed in ETSI EG 203 336 V1.1.1 . 34
F.1.1 Receiver sensitivity . 34
F.1.2 Adjacent channel selectivity . 34
F.1.3 Blocking . 34
F.1.4 Co-channel rejection . 34
F.1.5 Spurious response rejection . 35
F.1.6 Inter-modulation . 35
F.1.7 Dynamic range . 35
F.1.8 Reciprocal mixing . 35
F.1.9 Desensitizatio n . 35
F.1.10 Signal interference handling . 35
F.2 Other receiver parameters. 36
F.2.1 Receiver Multipath dynamic performance . 36
F.2.2 Receiver tolerable centre frequency . 36
F.2.3 Receiver tolerable chip rate error . 36
F.2.4 Receiver tolerable MTIE . 36
F.2.5 Receiver error behaviour at high wanted input signal . 36
F.2.6 Receiver distortion immunity . 36
Annex G (informative): Change History . 37
History . 38
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6 Draft ETSI EN 302 609 V2.2.0 (2020-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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 (https://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.
Trademarks
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not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.7] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
7 Draft ETSI EN 302 609 V2.2.0 (2020-07)
Introduction
The Euroloop communication system is defined by the specifications [1] and [2] of the UNISIG consortia.
ETSI
8 Draft ETSI EN 302 609 V2.2.0 (2020-07)
1 Scope
The present document specifies technical characteristics and methods of measurements for radio transmitters and
receivers used in the Euroloop communications system. The system is used in railway systems.
The present document applies to the following equipment:
1) The On-Board Equipment (OBE) transmitting the tele-powering to wake-up the Trackside Equipment and
receiving the Euroloop signal. The OBE comprises a receiver fitted with a dedicated antenna.
2) The Trackside Equipment receiving the tele-powering and transmitting the Euroloop signal. The antenna is a
leaky feeder cable that is always installed in an inner or outer foot of a rail.
NOTE 1: For the purposes of the present document term "Euroloop" will be used as a descriptive term of the
Euroloop communication system as defined by the specifications [1] and [2] of the UNISIG consortia.
The Euroloop transmission system operates in frequency bands listed in table 1 in accordance with the EC Decision
2013/752/EU [i.2], and ERC Recommendation 70-03 [i.3], annex 4.
These radio equipment types are capable of operating at the following frequencies as given below in table 1.
Table 1: Radio communications frequencies
Radio communications frequencies
OBE receive frequency band 11,1 MHz -16,0 MHz
OBE transmit frequency band 27,09 MHz - 27,10 MHz
OBE transmit modulation un-modulated RF carrier, continuous wave
Trackside Equipment receiver frequency 27,09 MHz - 27,10 MHz
band
Trackside Equipment transmit frequency 11,1 MHz -16,0 MHz
band
Trackside Equipment transmit BPSK, DSSS chip rate 4,516 MHz
modulation
NOTE 2: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.
The present document contains requirements to demonstrate that radio equipment both effectively uses and supports the
efficient use of radio spectrum in order to avoid harmful interference.
2 References
2.1 Normative 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
https://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.
The following referenced documents are necessary for the application of the present document.
th
[1] ERTMS/ETCS: "FFFIS for Euroloop", SUBSET-044, Issue 2.4.0, 29 February 2012.
NOTE: Available at https://www.era.europa.eu/content/set-specifications-2-etcs-b3-mr1-gsm-r-b1_en.
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9 Draft ETSI EN 302 609 V2.2.0 (2020-07)
th
[2] ERTMS/ETCS: "Test Specification for Euroloop", SUBSET-103, Issue 1.1.0, 29 February 2012.
NOTE: Available at https://www.era.europa.eu/content/set-specifications-2-etcs-b3-mr1-gsm-r-b1_en.
[3] CISPR 16-1-4:2019: "Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites
for radiated disturbance measurements".
2.2 Informative 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.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
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 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC, (OJ L153, 22.5.2014, p.62).
[i.2] EC Decision 2013/752/EU: "Commission Implementing Decision of 11 December 2013 amending
Decision 2006/771/EC on harmonisation of the radio spectrum for use by short-range devices and
repealing Decision 2005/928/EC".
[i.3] CEPT/ERC/Recommendation 70-03: "Relating to the use of Short Range Devices (SRD)".
[i.4] 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".
[i.5] 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".
[i.6] EN 50121-2 (2015-03): "Railway applications - Electromagnetic compatibility - Part 2: Emission
of the whole railway system to the outside world" / Applies in conjunction with EN 50121-1
(2000-09)" (produced by CENELEC).
[i.7] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.8] ETSI TR 102 273-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 2: Anechoic chamber".
[i.9] ETSI TR 102 273-3: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 3: Anechoic chamber with a ground plane".
[i.10] ETSI TR 102 273-4: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 4: Open area test site".
[i.11] ETSI EG 203 336 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Guide for the selection of technical parameters for the production of Harmonised Standards
covering article 3.1(b) and article 3.2 of Directive 2014/53/EU".
ETSI
10 Draft ETSI EN 302 609 V2.2.0 (2020-07)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
dedicated antenna: removable antenna supplied and tested with the radio equipment, designed as an indispensable part
of the equipment
Eurobalise: trackside transmission unit that uses the magnetic transponder technology
NOTE: Its main function is to transmit and/or receive signals through the air gap. The Eurobalise is a single
device mounted on the track, which communicates with a train passing over it.
Euroloop: trackside transmission unit that uses the magnetic transmission technology
NOTE: Its main function is to transmit signals through the air gap. The Euroloop is a single device (leaky feeder
cable) mounted on the track, which communicates with a train passing over it.
magnetic transmission technology: method that uses magnetic coupling in the air gap between a transmitter and a
receiver
NOTE: In the Euroloop transmission system context, it considers systems using the band 11,1 - 16,0 MHz for
Uplink (track to train) transmission.
RF carrier: fixed radio frequency prior to modulation
tele-powering: signal transmitted by the OBE, which activates the Trackside Equipment
uplink: transmission link from the Trackside Equipment to the OBE
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Frequency
Ω Ohm
R Distance
R Chip rate
C
λ wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
BER Bit Error Ratio
BPSK Binary Phase Shift Keying
CW Continuous Wave
dB deciBel
NOTE: Logarithmic scale.
DSSS Direct Sequence Spread Spectrum
EMC ElectroMagnetic Compatibility
ERC European Radiocommunications Committee
EUT Equipment Under Test
LOOMO LOOp MOdem
MTIE Maximum Time Interval Error
OATS Open Area Test Site
OBE On-Board Equipment
ETSI
11 Draft ETSI EN 302 609 V2.2.0 (2020-07)
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
RMS Root Mean Square
SRD Short Range Device
TX Transmitter
UNISIG UNion Industry of SIGnalling
VSWR Voltage Standing Wave Ratio
4 Technical requirements 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 in accordance with its intended use. The equipment shall comply with all the technical
requirements of the present document at all times when operating within the boundary limits of the operational
environmental profile defined by its intended use.
4.2 Transmitter conformance requirements
4.2.1 OBE TX field strength and Transmitter mask
4.2.1.1 Applicability
This test only applies to the OBE. The radiated H-field mask is defined in the direction of maximum field strength
under specified conditions of measurement.
NOTE: Eurobalise-OBE tele-powering is used for wake-up of the Trackside Equipment.
4.2.1.2 Limits
The limits of figure 1 (expressed in dBµA/m at a distance of 10 m) shall not be exceeded.
+42 dBµA/m
+5 dBµA/m
f +200 kHz
f +5 kHz
f -200 kHz f -5 kHz o
o
o o
-1 dBµA/m
f = 27,095 MHz
o
f +500 kHz
f -500 kHz
o
o
Figure 1: OBE transmitter mask
The maximum OBE TX field strength of +42 dBµA/m at 10 m distance is in accordance with the EC Decision for
SRDs [i.2] and ERC Recommendation 70-03 [i.3], annex 4.
4.2.1.3 Conformance
The conformance test suite for OBE transmitter mask shall be as defined in clause 6.1.1.
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12 Draft ETSI EN 302 609 V2.2.0 (2020-07)
4.2.2 OBE unwanted emissions
4.2.2.1 Applicability
This test only applies to the OBE. Unwanted emissions consist of out-of-band and spurious emissions outside the
frequency range 27,095 MHz ± 500 kHz as defined in clause 4.2.1.2.
4.2.2.2 Limits
The limits in table 2 (expressed in dBµA/m at a distance of 10 m for frequencies below 30 MHz and expressed in
dBµV/m at a distance of 10 m for frequencies equal or greater than 30 MHz) shall not be exceeded.
Table 2: OBE unwanted emissions limits
Frequency: (f) Limit
44 dBµA/m at 9 kHz decreasing with logarithm of frequency to 19 dBµA/m at 150 kHz
9 kHz ≤ f < 150 kHz
54 dBµA/m at 150 kHz decreasing with logarithm of frequency to 4 dBµA/m at 30 MHz
150 kHz ≤ f < 30 MHz
79 dBµV/m at 30 MHz decreasing with logarithm of frequency to 54 dBµV/m at 1 GHz
30 MHz ≤ f ≤ 1 GHz
NOTE: The values are based on the assumption that the system operates in a rail environment installed below a
rail vehicle. The values are extracted from the EMC limits for rail equipment given in figure 1 (150 kHz to
1 GHz) and figure C.1 (below 150 kHz) of EN 50121-2:2015 [i.6]. The most stringent EMC limits
(Category C) decreased by 6 dB have been chosen for the limits in this table.
4.2.2.3 Conformance
The conformance test suite for OBE unwanted emission shall be as defined in clause 6.1.2.
4.2.3 Trackside Equipment transmitter field strength
4.2.3.1 Applicability
This only applies to the Trackside Equipment transmitter.
4.2.3.2 Limits
The transmitted magnetic field strength shall not exceed -7 dBµA/m at 10 m distance within the frequency range of
11,1 MHz to 16,0 MHz measured in a bandwidth of 10 kHz spatially averaged over any 200 m length of the loop.
The maximum Trackside Equipment transmitter field strength of -7 dBµA/m at 10 m distance is in accordance with the
EC Decision for SRDs [i.2] and ERC Recommendation 70-03 [i.3], annex 4.
4.2.3.3 Conformance
The conformance test suite for the Trackside Equipment transmitter field strength shall be as defined in clause 6.1.3.
4.2.4 Trackside Equipment transmitter mask
4.2.4.1 Applicability
This test only applies to the Trackside Equipment transmitter consisting of out-of-band and spurious emissions outside
the frequency range 11,1 MHz to 16,0 MHz as defined in clause 4.2.3.2.
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13 Draft ETSI EN 302 609 V2.2.0 (2020-07)
4.2.4.2 Limit
The measured spectrum (field strength) shall not exceed the relative frequency mask values of figure 2 (from [1],
clause 6.7.7 "Spectrum Mask").
11,1MHz 16,0MHz
0dBc 0dBc
7,3MHz
-23dBc 23MHz
-23dBc
30MHz
-35dBc 1000MHz
1,0MHz -40dBc
-37dBc
.
1 10 100 1 10
Frequency, MHz
Figure 2: Trackside Equipment transmitter spectrum and spurious mask
The limit at 1 MHz shall also apply for frequencies below 1 MHz.
4.2.4.3 Conformance
The conformance test suite for Trackside Equipment transmitter mask shall be as defined in clause 6.1.4.
4.3 Receiver Conformance requirements
4.3.1 OBE Receiver sensitivity
4.3.1.1 Applicability
This only applies to the OBE receiver.
4.3.1.2 Limits
The OBE receiver sensitivity limits are specified in [1], clause 7.5.2.1.2 "Sensitivity".
4.3.1.3 Conformance
See clause 6.2.1.
4.3.2 OBE Receiver error behaviour at high wanted input signal level
4.3.2.1 Applicability
This only applies to the OBE receiver.
ETSI
Relative Magnitude, dBc
14 Draft ETSI EN 302 609 V2.2.0 (2020-07)
4.3.2.2 Limits
The OBE receiver upper limits for the dynamic range are specified in [1], clause 7.5.2.1.3 "Error Behaviour at High
Wanted Input Signal Level".
4.3.2.3 Conformance
See clause 6.2.2.
4.3.3 OBE Receiver distortion immunity
4.3.3.1 Applicability
This only applies to the OBE receiver.
4.3.3.2 Limits
The OBE receiver distortion immunity limits are specified in [1], clause 7.5.2.2 "Distortion Immunity".
4.3.3.3 Conformance
See clause 6.2.3.
4.3.4 OBE Receiver inter-modulation immunity
4.3.4.1 Applicability
This only applies to the OBE receiver.
4.3.4.2 Limits
The OBE receiver sensitivity limits are specified in [1], clause 7.5.2.3 "Inter-modulation Immunity".
4.3.4.3 Conformance
See clause 6.2.4.
4.3.5 OBE Receiver co-channel rejection
4.3.5.1 Applicability
This only applies to the OBE receiver.
4.3.5.2 Limits
The OBE receiver co-channel rejection limits are specified in [1], clause 7.5.2.4 "Co-Channel Rejection".
4.3.5.3 Conformance
See clause 6.2.5.
4.
...
HARMONISED EUROPEAN STANDARD
Short Range Devices (SRD);
Radio equipment for Euroloop communication systems;
Harmonised Standard for access to radio spectrum
2 ETSI EN 302 609 V2.2.1 (2020-10)
Reference
REN/ERM-TG28-550
Keywords
harmonised standard, radio, SRD, testing
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ETSI
3 ETSI EN 302 609 V2.2.1 (2020-10)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Definition of terms, symbols and abbreviations . 10
3.1 Terms . 10
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Transmitter conformance requirements . 11
4.2.1 OBE TX field strength and Transmitter mask . 11
4.2.1.1 Applicability. 11
4.2.1.2 Limits . 11
4.2.1.3 Conformance . 11
4.2.2 OBE unwanted emissions . 12
4.2.2.1 Applicability. 12
4.2.2.2 Limits . 12
4.2.2.3 Conformance . 12
4.2.3 Trackside Equipment transmitter field strength . 12
4.2.3.1 Applicability. 12
4.2.3.2 Limits . 12
4.2.3.3 Conformance . 12
4.2.4 Trackside Equipment transmitter mask. 12
4.2.4.1 Applicability. 12
4.2.4.2 Limit . 13
4.2.4.3 Conformance . 13
4.3 Receiver Conformance requirements . 13
4.3.1 OBE Receiver sensitivity . 13
4.3.1.1 Applicability. 13
4.3.1.2 Limits . 13
4.3.1.3 Conformance . 13
4.3.2 OBE Receiver error behaviour at high wanted input signal level . 13
4.3.2.1 Applicability. 13
4.3.2.2 Limits . 14
4.3.2.3 Conformance . 14
4.3.3 OBE Receiver distortion immunity . 14
4.3.3.1 Applicability. 14
4.3.3.2 Limits . 14
4.3.3.3 Conformance . 14
4.3.4 OBE Receiver inter-modulation immunity . 14
4.3.4.1 Applicability. 14
4.3.4.2 Limits . 14
4.3.4.3 Conformance . 14
4.3.5 OBE Receiver co-channel rejection . 14
4.3.5.1 Applicability. 14
4.3.5.2 Limits . 14
4.3.5.3 Conformance . 14
4.3.6 OBE Receiver blocking . 14
4.3.6.1 Applicability. 14
ETSI
4 ETSI EN 302 609 V2.2.1 (2020-10)
4.3.6.2 Limits . 15
4.3.6.3 Conformance . 15
4.3.7 OBE Receiver dynamic receiver performance . 15
4.3.7.1 Applicability. 15
4.3.7.2 Limits . 15
4.3.7.3 Conformance . 15
4.3.8 OBE Receiver multipath dynamic performance . 15
4.3.8.1 Applicability. 15
4.3.8.2 Limits . 15
4.3.8.3 Conformance . 15
4.3.9 OBE Receiver tolerable centre frequency error . 15
4.3.9.1 Applicability. 15
4.3.9.2 Limits . 15
4.3.9.3 Conformance . 15
4.3.10 OBE Receiver tolerable chip rate error . 16
4.3.10.1 Applicability. 16
4.3.10.2 Limits . 16
4.3.10.3 Conformance . 16
4.3.11 OBE Receiver tolerable MTIE of the chip rate . 16
4.3.11.1 Applicability. 16
4.3.11.2 Limits . 16
4.3.11.3 Conformance . 16
4.3.12 Trackside Equipment Receiver sensitivity . 16
4.3.12.1 Applicability. 16
4.3.12.2 Limits . 16
4.3.12.3 Conformance . 16
5 Testing for compliance with technical requirements . 16
5.1 Environmental conditions for testing . 16
5.2 General conditions for testing . 17
5.2.1 Test conditions . 17
5.2.2 Test power source . 17
5.2.3 Normal test conditions . 17
5.2.3.1 Normal temperature and humidity . 17
5.2.3.2 Normal test power source . 17
5.2.3.2.1 Mains voltage . 17
5.2.3.2.2 Other power sources . 17
5.2.4 Extreme test conditions . 17
5.2.5 Choice of equipment for test suites . 18
5.2.5.1 Choice of model . 18
5.2.5.2 Measuring receiver . 18
5.3 Void . 18
6 Performance Test Suites . 18
6.1 Conformance methods of measurement for transmitters . 18
6.1.1 OBE Tx field strength and Transmitter Mask . 18
6.1.2 OBE Unwanted Emission . 19
6.1.3 Trackside Equipment field strength measurements . 19
6.1.4 Trackside Equipment transmitter conducted measurements . 20
6.2 Conformance Methods of Measurement for Receiver . 20
6.2.1 OBE receiver sensitivity . 20
6.2.2 OBE receiver error behaviour at high wanted input signal level . 20
6.2.3 OBE receiver distortion immunity . 20
6.2.4 OBE receiver inter-modulation immunity . 20
6.2.5 OBE Receiver co-channel rejection . 20
6.2.6 OBE Receiver blocking . 21
6.2.7 OBE receiver dynamic receiver performance . 21
6.2.8 OBE receiver multipath dynamic performance. 21
6.2.9 OBE receiver tolerable centre frequency error . 21
6.2.10 OBE Receiver tolerable chip rate error . 21
6.2.11 OBE Receiver tolerable MTIE of the chip rate . 21
6.2.12 Trackside Equipment receiver sensitivity . 21
ETSI
5 ETSI EN 302 609 V2.2.1 (2020-10)
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 22
Annex B (normative): Field strength measurements along the Euroloop . 24
Annex C (normative): Radiated measurements . 25
C.1 Test sites and general arrangements for measurements involving the use of radiated fields . 25
C.1.0 General . 25
C.1.1 Anechoic chamber . 25
C.1.2 Anechoic chamber with a conductive ground plane . 26
C.1.3 Open Area Test Site (OATS) . 28
C.1.3.0 General . 28
C.1.3.1 Measurements below 30 MHz . 28
C.1.3.2 Measurements above 30 MHz . 28
Annex D (normative): H-field measurements and limits at 3 m and 30 m . 30
D.0 General . 30
D.1 Limits for measurements at 30 m distance . 30
D.2 Limits for measurements at 3 m distance . 31
Annex E (informative): Maximum measurement uncertainty . 33
Annex F (informative): Selection of receiver parameters. 34
F.1 OBE Receiver parameters as listed in ETSI EG 203 336 V1.1.1 . 34
F.1.1 Receiver sensitivity . 34
F.1.2 Adjacent channel selectivity . 34
F.1.3 Blocking . 34
F.1.4 Co-channel rejection . 34
F.1.5 Spurious response rejection . 35
F.1.6 Inter-modulation . 35
F.1.7 Dynamic range . 35
F.1.8 Reciprocal mixing . 35
F.1.9 Desensitizatio n . 35
F.1.10 Signal interference handling . 35
F.2 Other receiver parameters. 36
F.2.1 Receiver Multipath dynamic performance . 36
F.2.2 Receiver tolerable centre frequency . 36
F.2.3 Receiver tolerable chip rate error . 36
F.2.4 Receiver tolerable MTIE . 36
F.2.5 Receiver error behaviour at high wanted input signal . 36
F.2.6 Receiver distortion immunity . 36
Annex G (informative): Change History . 37
History . 38
ETSI
6 ETSI EN 302 609 V2.2.1 (2020-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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 (https://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.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.7] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
National transposition dates
Date of adoption of this EN: 20 October 2020
Date of latest announcement of this EN (doa): 31 January 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 July 2021
Date of withdrawal of any conflicting National Standard (dow): 31 July 2022
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
7 ETSI EN 302 609 V2.2.1 (2020-10)
Introduction
The Euroloop communication system is defined by the specifications [1] and [2] of the UNISIG consortia.
ETSI
8 ETSI EN 302 609 V2.2.1 (2020-10)
1 Scope
The present document specifies technical characteristics and methods of measurements for radio transmitters and
receivers used in the Euroloop communications system. The system is used in railway systems.
The present document applies to the following equipment:
1) The On-Board Equipment (OBE) transmitting the tele-powering to wake-up the Trackside Equipment and
receiving the Euroloop signal. The OBE comprises a receiver fitted with a dedicated antenna.
2) The Trackside Equipment receiving the tele-powering and transmitting the Euroloop signal. The antenna is a
leaky feeder cable that is always installed in an inner or outer foot of a rail.
NOTE 1: For the purposes of the present document term "Euroloop" will be used as a descriptive term of the
Euroloop communication system as defined by the specifications [1] and [2] of the UNISIG consortia.
The Euroloop transmission system operates in frequency bands listed in table 1 in accordance with the EC Decision
2013/752/EU [i.2], and ERC Recommendation 70-03 [i.3], annex 4.
These radio equipment types are capable of operating at the following frequencies as given below in table 1.
Table 1: Radio communications frequencies
Radio communications frequencies
OBE receive frequency band 11,1 MHz -16,0 MHz
OBE transmit frequency band 27,09 MHz - 27,10 MHz
OBE transmit modulation un-modulated RF carrier, continuous wave
Trackside Equipment receiver frequency 27,09 MHz - 27,10 MHz
band
Trackside Equipment transmit frequency 11,1 MHz -16,0 MHz
band
Trackside Equipment transmit BPSK, DSSS chip rate 4,516 MHz
modulation
NOTE 2: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.
The present document contains requirements to demonstrate that radio equipment both effectively uses and supports the
efficient use of radio spectrum in order to avoid harmful interference.
2 References
2.1 Normative 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
https://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.
The following referenced documents are necessary for the application of the present document.
th
[1] ERTMS/ETCS: "FFFIS for Euroloop", SUBSET-044, Issue 2.4.0, 29 February 2012.
NOTE: Available at https://www.era.europa.eu/content/set-specifications-2-etcs-b3-mr1-gsm-r-b1_en.
ETSI
9 ETSI EN 302 609 V2.2.1 (2020-10)
th
[2] ERTMS/ETCS: "Test Specification for Euroloop", SUBSET-103, Issue 1.1.0, 29 February 2012.
NOTE: Available at https://www.era.europa.eu/content/set-specifications-2-etcs-b3-mr1-gsm-r-b1_en.
[3] CISPR 16-1-4:2019: "Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites
for radiated disturbance measurements".
2.2 Informative 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.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
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 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC, (OJ L153, 22.5.2014, p.62).
[i.2] EC Decision 2013/752/EU: "Commission Implementing Decision of 11 December 2013 amending
Decision 2006/771/EC on harmonisation of the radio spectrum for use by short-range devices and
repealing Decision 2005/928/EC".
[i.3] CEPT/ERC/Recommendation 70-03: "Relating to the use of Short Range Devices (SRD)".
[i.4] 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".
[i.5] 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".
[i.6] EN 50121-2 (2015-03): "Railway applications - Electromagnetic compatibility - Part 2: Emission
of the whole railway system to the outside world" / Applies in conjunction with EN 50121-1
(2000-09)" (produced by CENELEC).
[i.7] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.8] ETSI TR 102 273-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 2: Anechoic chamber".
[i.9] ETSI TR 102 273-3: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 3: Anechoic chamber with a ground plane".
[i.10] ETSI TR 102 273-4: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 4: Open area test site".
[i.11] ETSI EG 203 336 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Guide for the selection of technical parameters for the production of Harmonised Standards
covering article 3.1(b) and article 3.2 of Directive 2014/53/EU".
ETSI
10 ETSI EN 302 609 V2.2.1 (2020-10)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
dedicated antenna: removable antenna supplied and tested with the radio equipment, designed as an indispensable part
of the equipment
Eurobalise: trackside transmission unit that uses the magnetic transponder technology
NOTE: Its main function is to transmit and/or receive signals through the air gap. The Eurobalise is a single
device mounted on the track, which communicates with a train passing over it.
Euroloop: trackside transmission unit that uses the magnetic transmission technology
NOTE: Its main function is to transmit signals through the air gap. The Euroloop is a single device (leaky feeder
cable) mounted on the track, which communicates with a train passing over it.
magnetic transmission technology: method that uses magnetic coupling in the air gap between a transmitter and a
receiver
NOTE: In the Euroloop transmission system context, it considers systems using the band 11,1 - 16,0 MHz for
Uplink (track to train) transmission.
RF carrier: fixed radio frequency prior to modulation
tele-powering: signal transmitted by the OBE, which activates the Trackside Equipment
uplink: transmission link from the Trackside Equipment to the OBE
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Frequency
Ω Ohm
R Distance
R Chip rate
C
λ wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
BER Bit Error Ratio
BPSK Binary Phase Shift Keying
CW Continuous Wave
dB deciBel
NOTE: Logarithmic scale.
DSSS Direct Sequence Spread Spectrum
EMC ElectroMagnetic Compatibility
ERC European Radiocommunications Committee
EUT Equipment Under Test
LOOMO LOOp MOdem
MTIE Maximum Time Interval Error
OATS Open Area Test Site
OBE On-Board Equipment
ETSI
11 ETSI EN 302 609 V2.2.1 (2020-10)
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
RMS Root Mean Square
SRD Short Range Device
TX Transmitter
UNISIG UNion Industry of SIGnalling
VSWR Voltage Standing Wave Ratio
4 Technical requirements 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 in accordance with its intended use. The equipment shall comply with all the technical
requirements of the present document at all times when operating within the boundary limits of the operational
environmental profile defined by its intended use.
4.2 Transmitter conformance requirements
4.2.1 OBE TX field strength and Transmitter mask
4.2.1.1 Applicability
This test only applies to the OBE. The radiated H-field mask is defined in the direction of maximum field strength
under specified conditions of measurement.
NOTE: Eurobalise-OBE tele-powering is used for wake-up of the Trackside Equipment.
4.2.1.2 Limits
The limits of figure 1 (expressed in dBµA/m at a distance of 10 m) shall not be exceeded.
+42 dBµA/m
+5 dBµA/m
f +200 kHz
f +5 kHz
f -200 kHz f -5 kHz o
o
o o
-1 dBµA/m
f = 27,095 MHz
o
f +500 kHz
f -500 kHz
o
o
Figure 1: OBE transmitter mask
The maximum OBE TX field strength of +42 dBµA/m at 10 m distance is in accordance with the EC Decision for
SRDs [i.2] and ERC Recommendation 70-03 [i.3], annex 4.
4.2.1.3 Conformance
The conformance test suite for OBE transmitter mask shall be as defined in clause 6.1.1.
ETSI
12 ETSI EN 302 609 V2.2.1 (2020-10)
4.2.2 OBE unwanted emissions
4.2.2.1 Applicability
This test only applies to the OBE. Unwanted emissions consist of out-of-band and spurious emissions outside the
frequency range 27,095 MHz ± 500 kHz as defined in clause 4.2.1.2.
4.2.2.2 Limits
The limits in table 2 (expressed in dBµA/m at a distance of 10 m for frequencies below 30 MHz and expressed in
dBµV/m at a distance of 10 m for frequencies equal or greater than 30 MHz) shall not be exceeded.
Table 2: OBE unwanted emissions limits
Frequency: (f) Limit
44 dBµA/m at 9 kHz decreasing with logarithm of frequency to 19 dBµA/m at 150 kHz
9 kHz ≤ f < 150 kHz
54 dBµA/m at 150 kHz decreasing with logarithm of frequency to 4 dBµA/m at 30 MHz
150 kHz ≤ f < 30 MHz
79 dBµV/m at 30 MHz decreasing with logarithm of frequency to 54 dBµV/m at 1 GHz
30 MHz ≤ f ≤ 1 GHz
NOTE: The values are based on the assumption that the system operates in a rail environment installed below a
rail vehicle. The values are extracted from the EMC limits for rail equipment given in figure 1 (150 kHz to
1 GHz) and figure C.1 (below 150 kHz) of EN 50121-2:2015 [i.6]. The most stringent EMC limits
(Category C) decreased by 6 dB have been chosen for the limits in this table.
4.2.2.3 Conformance
The conformance test suite for OBE unwanted emission shall be as defined in clause 6.1.2.
4.2.3 Trackside Equipment transmitter field strength
4.2.3.1 Applicability
This only applies to the Trackside Equipment transmitter.
4.2.3.2 Limits
The transmitted magnetic field strength shall not exceed -7 dBµA/m at 10 m distance within the frequency range of
11,1 MHz to 16,0 MHz measured in a bandwidth of 10 kHz spatially averaged over any 200 m length of the loop.
The maximum Trackside Equipment transmitter field strength of -7 dBµA/m at 10 m distance is in accordance with the
EC Decision for SRDs [i.2] and ERC Recommendation 70-03 [i.3], annex 4.
4.2.3.3 Conformance
The conformance test suite for the Trackside Equipment transmitter field strength shall be as defined in clause 6.1.3.
4.2.4 Trackside Equipment transmitter mask
4.2.4.1 Applicability
This test only applies to the Trackside Equipment transmitter consisting of out-of-band and spurious emissions outside
the frequency range 11,1 MHz to 16,0 MHz as defined in clause 4.2.3.2.
ETSI
13 ETSI EN 302 609 V2.2.1 (2020-10)
4.2.4.2 Limit
The measured spectrum (field strength) shall not exceed the relative frequency mask values of figure 2 (from [1],
clause 6.7.7 "Spectrum Mask").
11,1MHz 16,0MHz
0dBc 0dBc
7,3MHz
-23dBc 23MHz
-23dBc
30MHz
-35dBc 1000MHz
1,0MHz -40dBc
-37dBc
.
1 10 100 1 10
Frequency, MHz
Figure 2: Trackside Equipment transmitter spectrum and spurious mask
The limit at 1 MHz shall also apply for frequencies below 1 MHz.
4.2.4.3 Conformance
The conformance test suite for Trackside Equipment transmitter mask shall be as defined in clause 6.1.4.
4.3 Receiver Conformance requirements
4.3.1 OBE Receiver sensitivity
4.3.1.1 Applicability
This only applies to the OBE receiver.
4.3.1.2 Limits
The OBE receiver sensitivity limits are specified in [1], clause 7.5.2.1.2 "Sensitivity".
4.3.1.3 Conformance
See clause 6.2.1.
4.3.2 OBE Receiver error behaviour at high wanted input signal level
4.3.2.1 Applicability
This only applies to the OBE receiver.
ETSI
Relative Magnitude, dBc
14 ETSI EN 302 609 V2.2.1 (2020-10)
4.3.2.2 Limits
The OBE receiver upper limits for the dynamic range are specified in [1], clause 7.5.2.1.3 "Error Behaviour at High
Wanted Input Signal Level".
4.3.2.3 Conformance
See clause 6.2.2.
4.3.3 OBE Receiver distortion immunity
4.3.3.1 Applicability
This only applies to the OBE receiver.
4.3.3.2 Limits
The OBE receiver distortion immunity limits are specified in [1], clause 7.5.2.2 "Distortion Immunity".
4.3.3.3 Conformance
See clause 6.2.3.
4.3.4 OBE Receiver inter-modulation immunity
4.3.4.1 Applicability
This only applies to the OBE receiver.
4.3.4.2 Limits
The OBE receiver sensitivity limits are specified in [1], clause 7.5.2.3 "Inter-modulation Immunity".
4.3.4.3 Conformance
See clause 6.2.4.
4.3.5 OBE Receiver co-channel rejection
4.3.5.1 Applicability
This only applies to the OBE receiver.
4.3.5.2 Limits
The OBE receiver co-channel rejection limits are specified in [1], clause 7.5.2.4 "Co-Channel Rejection".
4.3.5.3 Conformance
See clause 6.2.5.
4.3.6 OBE Receiver blocking
4.3.6.1 Applicability
This only applies to the OBE receiver.
ETSI
15 ETSI EN 302 609 V2.2.1 (2020-10)
4.3.6
...
SLOVENSKI STANDARD
01-december-2020
Naprave kratkega dosega (SRD) - Radijska oprema za komunikacijske sisteme
Euroloop - Harmonizirani standard za dostop do radijskega spektra
Short Range Devices (SRD) - Radio equipment for Euroloop communication systems -
Harmonised Standard for access to radio spectrum
Ta slovenski standard je istoveten z: ETSI EN 302 609 V2.2.1 (2020-10)
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
45.020 Železniška tehnika na Railway engineering in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
HARMONISED EUROPEAN STANDARD
Short Range Devices (SRD);
Radio equipment for Euroloop communication systems;
Harmonised Standard for access to radio spectrum
2 ETSI EN 302 609 V2.2.1 (2020-10)
Reference
REN/ERM-TG28-550
Keywords
harmonised standard, radio, SRD, testing
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3 ETSI EN 302 609 V2.2.1 (2020-10)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Definition of terms, symbols and abbreviations . 10
3.1 Terms . 10
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Transmitter conformance requirements . 11
4.2.1 OBE TX field strength and Transmitter mask . 11
4.2.1.1 Applicability. 11
4.2.1.2 Limits . 11
4.2.1.3 Conformance . 11
4.2.2 OBE unwanted emissions . 12
4.2.2.1 Applicability. 12
4.2.2.2 Limits . 12
4.2.2.3 Conformance . 12
4.2.3 Trackside Equipment transmitter field strength . 12
4.2.3.1 Applicability. 12
4.2.3.2 Limits . 12
4.2.3.3 Conformance . 12
4.2.4 Trackside Equipment transmitter mask. 12
4.2.4.1 Applicability. 12
4.2.4.2 Limit . 13
4.2.4.3 Conformance . 13
4.3 Receiver Conformance requirements . 13
4.3.1 OBE Receiver sensitivity . 13
4.3.1.1 Applicability. 13
4.3.1.2 Limits . 13
4.3.1.3 Conformance . 13
4.3.2 OBE Receiver error behaviour at high wanted input signal level . 13
4.3.2.1 Applicability. 13
4.3.2.2 Limits . 14
4.3.2.3 Conformance . 14
4.3.3 OBE Receiver distortion immunity . 14
4.3.3.1 Applicability. 14
4.3.3.2 Limits . 14
4.3.3.3 Conformance . 14
4.3.4 OBE Receiver inter-modulation immunity . 14
4.3.4.1 Applicability. 14
4.3.4.2 Limits . 14
4.3.4.3 Conformance . 14
4.3.5 OBE Receiver co-channel rejection . 14
4.3.5.1 Applicability. 14
4.3.5.2 Limits . 14
4.3.5.3 Conformance . 14
4.3.6 OBE Receiver blocking . 14
4.3.6.1 Applicability. 14
ETSI
4 ETSI EN 302 609 V2.2.1 (2020-10)
4.3.6.2 Limits . 15
4.3.6.3 Conformance . 15
4.3.7 OBE Receiver dynamic receiver performance . 15
4.3.7.1 Applicability. 15
4.3.7.2 Limits . 15
4.3.7.3 Conformance . 15
4.3.8 OBE Receiver multipath dynamic performance . 15
4.3.8.1 Applicability. 15
4.3.8.2 Limits . 15
4.3.8.3 Conformance . 15
4.3.9 OBE Receiver tolerable centre frequency error . 15
4.3.9.1 Applicability. 15
4.3.9.2 Limits . 15
4.3.9.3 Conformance . 15
4.3.10 OBE Receiver tolerable chip rate error . 16
4.3.10.1 Applicability. 16
4.3.10.2 Limits . 16
4.3.10.3 Conformance . 16
4.3.11 OBE Receiver tolerable MTIE of the chip rate . 16
4.3.11.1 Applicability. 16
4.3.11.2 Limits . 16
4.3.11.3 Conformance . 16
4.3.12 Trackside Equipment Receiver sensitivity . 16
4.3.12.1 Applicability. 16
4.3.12.2 Limits . 16
4.3.12.3 Conformance . 16
5 Testing for compliance with technical requirements . 16
5.1 Environmental conditions for testing . 16
5.2 General conditions for testing . 17
5.2.1 Test conditions . 17
5.2.2 Test power source . 17
5.2.3 Normal test conditions . 17
5.2.3.1 Normal temperature and humidity . 17
5.2.3.2 Normal test power source . 17
5.2.3.2.1 Mains voltage . 17
5.2.3.2.2 Other power sources . 17
5.2.4 Extreme test conditions . 17
5.2.5 Choice of equipment for test suites . 18
5.2.5.1 Choice of model . 18
5.2.5.2 Measuring receiver . 18
5.3 Void . 18
6 Performance Test Suites . 18
6.1 Conformance methods of measurement for transmitters . 18
6.1.1 OBE Tx field strength and Transmitter Mask . 18
6.1.2 OBE Unwanted Emission . 19
6.1.3 Trackside Equipment field strength measurements . 19
6.1.4 Trackside Equipment transmitter conducted measurements . 20
6.2 Conformance Methods of Measurement for Receiver . 20
6.2.1 OBE receiver sensitivity . 20
6.2.2 OBE receiver error behaviour at high wanted input signal level . 20
6.2.3 OBE receiver distortion immunity . 20
6.2.4 OBE receiver inter-modulation immunity . 20
6.2.5 OBE Receiver co-channel rejection . 20
6.2.6 OBE Receiver blocking . 21
6.2.7 OBE receiver dynamic receiver performance . 21
6.2.8 OBE receiver multipath dynamic performance. 21
6.2.9 OBE receiver tolerable centre frequency error . 21
6.2.10 OBE Receiver tolerable chip rate error . 21
6.2.11 OBE Receiver tolerable MTIE of the chip rate . 21
6.2.12 Trackside Equipment receiver sensitivity . 21
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5 ETSI EN 302 609 V2.2.1 (2020-10)
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 22
Annex B (normative): Field strength measurements along the Euroloop . 24
Annex C (normative): Radiated measurements . 25
C.1 Test sites and general arrangements for measurements involving the use of radiated fields . 25
C.1.0 General . 25
C.1.1 Anechoic chamber . 25
C.1.2 Anechoic chamber with a conductive ground plane . 26
C.1.3 Open Area Test Site (OATS) . 28
C.1.3.0 General . 28
C.1.3.1 Measurements below 30 MHz . 28
C.1.3.2 Measurements above 30 MHz . 28
Annex D (normative): H-field measurements and limits at 3 m and 30 m . 30
D.0 General . 30
D.1 Limits for measurements at 30 m distance . 30
D.2 Limits for measurements at 3 m distance . 31
Annex E (informative): Maximum measurement uncertainty . 33
Annex F (informative): Selection of receiver parameters. 34
F.1 OBE Receiver parameters as listed in ETSI EG 203 336 V1.1.1 . 34
F.1.1 Receiver sensitivity . 34
F.1.2 Adjacent channel selectivity . 34
F.1.3 Blocking . 34
F.1.4 Co-channel rejection . 34
F.1.5 Spurious response rejection . 35
F.1.6 Inter-modulation . 35
F.1.7 Dynamic range . 35
F.1.8 Reciprocal mixing . 35
F.1.9 Desensitizatio n . 35
F.1.10 Signal interference handling . 35
F.2 Other receiver parameters. 36
F.2.1 Receiver Multipath dynamic performance . 36
F.2.2 Receiver tolerable centre frequency . 36
F.2.3 Receiver tolerable chip rate error . 36
F.2.4 Receiver tolerable MTIE . 36
F.2.5 Receiver error behaviour at high wanted input signal . 36
F.2.6 Receiver distortion immunity . 36
Annex G (informative): Change History . 37
History . 38
ETSI
6 ETSI EN 302 609 V2.2.1 (2020-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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 (https://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.
Trademarks
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ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.7] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
National transposition dates
Date of adoption of this EN: 20 October 2020
Date of latest announcement of this EN (doa): 31 January 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 July 2021
Date of withdrawal of any conflicting National Standard (dow): 31 July 2022
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
7 ETSI EN 302 609 V2.2.1 (2020-10)
Introduction
The Euroloop communication system is defined by the specifications [1] and [2] of the UNISIG consortia.
ETSI
8 ETSI EN 302 609 V2.2.1 (2020-10)
1 Scope
The present document specifies technical characteristics and methods of measurements for radio transmitters and
receivers used in the Euroloop communications system. The system is used in railway systems.
The present document applies to the following equipment:
1) The On-Board Equipment (OBE) transmitting the tele-powering to wake-up the Trackside Equipment and
receiving the Euroloop signal. The OBE comprises a receiver fitted with a dedicated antenna.
2) The Trackside Equipment receiving the tele-powering and transmitting the Euroloop signal. The antenna is a
leaky feeder cable that is always installed in an inner or outer foot of a rail.
NOTE 1: For the purposes of the present document term "Euroloop" will be used as a descriptive term of the
Euroloop communication system as defined by the specifications [1] and [2] of the UNISIG consortia.
The Euroloop transmission system operates in frequency bands listed in table 1 in accordance with the EC Decision
2013/752/EU [i.2], and ERC Recommendation 70-03 [i.3], annex 4.
These radio equipment types are capable of operating at the following frequencies as given below in table 1.
Table 1: Radio communications frequencies
Radio communications frequencies
OBE receive frequency band 11,1 MHz -16,0 MHz
OBE transmit frequency band 27,09 MHz - 27,10 MHz
OBE transmit modulation un-modulated RF carrier, continuous wave
Trackside Equipment receiver frequency 27,09 MHz - 27,10 MHz
band
Trackside Equipment transmit frequency 11,1 MHz -16,0 MHz
band
Trackside Equipment transmit BPSK, DSSS chip rate 4,516 MHz
modulation
NOTE 2: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.
The present document contains requirements to demonstrate that radio equipment both effectively uses and supports the
efficient use of radio spectrum in order to avoid harmful interference.
2 References
2.1 Normative 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
https://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.
The following referenced documents are necessary for the application of the present document.
th
[1] ERTMS/ETCS: "FFFIS for Euroloop", SUBSET-044, Issue 2.4.0, 29 February 2012.
NOTE: Available at https://www.era.europa.eu/content/set-specifications-2-etcs-b3-mr1-gsm-r-b1_en.
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9 ETSI EN 302 609 V2.2.1 (2020-10)
th
[2] ERTMS/ETCS: "Test Specification for Euroloop", SUBSET-103, Issue 1.1.0, 29 February 2012.
NOTE: Available at https://www.era.europa.eu/content/set-specifications-2-etcs-b3-mr1-gsm-r-b1_en.
[3] CISPR 16-1-4:2019: "Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites
for radiated disturbance measurements".
2.2 Informative 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.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
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 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC, (OJ L153, 22.5.2014, p.62).
[i.2] EC Decision 2013/752/EU: "Commission Implementing Decision of 11 December 2013 amending
Decision 2006/771/EC on harmonisation of the radio spectrum for use by short-range devices and
repealing Decision 2005/928/EC".
[i.3] CEPT/ERC/Recommendation 70-03: "Relating to the use of Short Range Devices (SRD)".
[i.4] 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".
[i.5] 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".
[i.6] EN 50121-2 (2015-03): "Railway applications - Electromagnetic compatibility - Part 2: Emission
of the whole railway system to the outside world" / Applies in conjunction with EN 50121-1
(2000-09)" (produced by CENELEC).
[i.7] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.8] ETSI TR 102 273-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 2: Anechoic chamber".
[i.9] ETSI TR 102 273-3: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 3: Anechoic chamber with a ground plane".
[i.10] ETSI TR 102 273-4: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 4: Open area test site".
[i.11] ETSI EG 203 336 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Guide for the selection of technical parameters for the production of Harmonised Standards
covering article 3.1(b) and article 3.2 of Directive 2014/53/EU".
ETSI
10 ETSI EN 302 609 V2.2.1 (2020-10)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
dedicated antenna: removable antenna supplied and tested with the radio equipment, designed as an indispensable part
of the equipment
Eurobalise: trackside transmission unit that uses the magnetic transponder technology
NOTE: Its main function is to transmit and/or receive signals through the air gap. The Eurobalise is a single
device mounted on the track, which communicates with a train passing over it.
Euroloop: trackside transmission unit that uses the magnetic transmission technology
NOTE: Its main function is to transmit signals through the air gap. The Euroloop is a single device (leaky feeder
cable) mounted on the track, which communicates with a train passing over it.
magnetic transmission technology: method that uses magnetic coupling in the air gap between a transmitter and a
receiver
NOTE: In the Euroloop transmission system context, it considers systems using the band 11,1 - 16,0 MHz for
Uplink (track to train) transmission.
RF carrier: fixed radio frequency prior to modulation
tele-powering: signal transmitted by the OBE, which activates the Trackside Equipment
uplink: transmission link from the Trackside Equipment to the OBE
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Frequency
Ω Ohm
R Distance
R Chip rate
C
λ wavelength
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
BER Bit Error Ratio
BPSK Binary Phase Shift Keying
CW Continuous Wave
dB deciBel
NOTE: Logarithmic scale.
DSSS Direct Sequence Spread Spectrum
EMC ElectroMagnetic Compatibility
ERC European Radiocommunications Committee
EUT Equipment Under Test
LOOMO LOOp MOdem
MTIE Maximum Time Interval Error
OATS Open Area Test Site
OBE On-Board Equipment
ETSI
11 ETSI EN 302 609 V2.2.1 (2020-10)
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
RMS Root Mean Square
SRD Short Range Device
TX Transmitter
UNISIG UNion Industry of SIGnalling
VSWR Voltage Standing Wave Ratio
4 Technical requirements 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 in accordance with its intended use. The equipment shall comply with all the technical
requirements of the present document at all times when operating within the boundary limits of the operational
environmental profile defined by its intended use.
4.2 Transmitter conformance requirements
4.2.1 OBE TX field strength and Transmitter mask
4.2.1.1 Applicability
This test only applies to the OBE. The radiated H-field mask is defined in the direction of maximum field strength
under specified conditions of measurement.
NOTE: Eurobalise-OBE tele-powering is used for wake-up of the Trackside Equipment.
4.2.1.2 Limits
The limits of figure 1 (expressed in dBµA/m at a distance of 10 m) shall not be exceeded.
+42 dBµA/m
+5 dBµA/m
f +200 kHz
f +5 kHz
f -200 kHz f -5 kHz o
o
o o
-1 dBµA/m
f = 27,095 MHz
o
f +500 kHz
f -500 kHz
o
o
Figure 1: OBE transmitter mask
The maximum OBE TX field strength of +42 dBµA/m at 10 m distance is in accordance with the EC Decision for
SRDs [i.2] and ERC Recommendation 70-03 [i.3], annex 4.
4.2.1.3 Conformance
The conformance test suite for OBE transmitter mask shall be as defined in clause 6.1.1.
ETSI
12 ETSI EN 302 609 V2.2.1 (2020-10)
4.2.2 OBE unwanted emissions
4.2.2.1 Applicability
This test only applies to the OBE. Unwanted emissions consist of out-of-band and spurious emissions outside the
frequency range 27,095 MHz ± 500 kHz as defined in clause 4.2.1.2.
4.2.2.2 Limits
The limits in table 2 (expressed in dBµA/m at a distance of 10 m for frequencies below 30 MHz and expressed in
dBµV/m at a distance of 10 m for frequencies equal or greater than 30 MHz) shall not be exceeded.
Table 2: OBE unwanted emissions limits
Frequency: (f) Limit
44 dBµA/m at 9 kHz decreasing with logarithm of frequency to 19 dBµA/m at 150 kHz
9 kHz ≤ f < 150 kHz
54 dBµA/m at 150 kHz decreasing with logarithm of frequency to 4 dBµA/m at 30 MHz
150 kHz ≤ f < 30 MHz
79 dBµV/m at 30 MHz decreasing with logarithm of frequency to 54 dBµV/m at 1 GHz
30 MHz ≤ f ≤ 1 GHz
NOTE: The values are based on the assumption that the system operates in a rail environment installed below a
rail vehicle. The values are extracted from the EMC limits for rail equipment given in figure 1 (150 kHz to
1 GHz) and figure C.1 (below 150 kHz) of EN 50121-2:2015 [i.6]. The most stringent EMC limits
(Category C) decreased by 6 dB have been chosen for the limits in this table.
4.2.2.3 Conformance
The conformance test suite for OBE unwanted emission shall be as defined in clause 6.1.2.
4.2.3 Trackside Equipment transmitter field strength
4.2.3.1 Applicability
This only applies to the Trackside Equipment transmitter.
4.2.3.2 Limits
The transmitted magnetic field strength shall not exceed -7 dBµA/m at 10 m distance within the frequency range of
11,1 MHz to 16,0 MHz measured in a bandwidth of 10 kHz spatially averaged over any 200 m length of the loop.
The maximum Trackside Equipment transmitter field strength of -7 dBµA/m at 10 m distance is in accordance with the
EC Decision for SRDs [i.2] and ERC Recommendation 70-03 [i.3], annex 4.
4.2.3.3 Conformance
The conformance test suite for the Trackside Equipment transmitter field strength shall be as defined in clause 6.1.3.
4.2.4 Trackside Equipment transmitter mask
4.2.4.1 Applicability
This test only applies to the Trackside Equipment transmitter consisting of out-of-band and spurious emissions outside
the frequency range 11,1 MHz to 16,0 MHz as defined in clause 4.2.3.2.
ETSI
13 ETSI EN 302 609 V2.2.1 (2020-10)
4.2.4.2 Limit
The measured spectrum (field strength) shall not exceed the relative frequency mask values of figure 2 (from [1],
clause 6.7.7 "Spectrum Mask").
11,1MHz 16,0MHz
0dBc 0dBc
7,3MHz
-23dBc 23MHz
-23dBc
30MHz
-35dBc 1000MHz
1,0MHz -40dBc
-37dBc
.
1 10 100 1 10
Frequency, MHz
Figure 2: Trackside Equipment transmitter spectrum and spurious mask
The limit at 1 MHz shall also apply for frequencies below 1 MHz.
4.2.4.3 Conformance
The conformance test suite for Trackside Equipment transmitter mask shall be as defined in clause 6.1.4.
4.3 Receiver Conformance requirements
4.3.1 OBE Receiver sensitivity
4.3.1.1 Applicability
This only applies to the OBE receiver.
4.3.1.2 Limits
The OBE receiver sensitivity limits are specified in [1], clause 7.5.2.1.2 "Sensitivity".
4.3.1.3 Conformance
See clause 6.2.1.
4.3.2 OBE Receiver error behaviour at high wanted input signal level
4.3.2.1 Applicability
This only applies to the OBE receiver.
ETSI
Relative Magnitude, dBc
SIST
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