SIST EN 302 077 V2.1.1:2018

HARMONISED EUROPEAN STANDARD
Transmitting equipment for the
Digital Audio Broadcasting (DAB) service;
Harmonised Standard for access to radio spectrum

2 ETSI EN 302 077 V2.1.1 (2018-06)

Reference
REN/ERM-TG17-015
Keywords
audio, broadcasting, DAB, digital, harmonised
standard, radio, regulation
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3 ETSI EN 302 077 V2.1.1 (2018-06)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definitions, symbols and abbreviations . 8
3.1 Definitions . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Technical requirements specifications . 10
4.1 Environmental profile . 10
4.2 Conformance requirements . 10
4.2.1 Rated output power accuracy . 10
4.2.1.1 Definition . 10
4.2.1.2 Limit . 10
4.2.1.3 Conformance . 10
4.2.2 Frequency stability . 10
4.2.2.1 Definition . 10
4.2.2.2 Limit . 11
4.2.2.3 Conformance . 11
4.2.3 Crest factor. 11
4.2.3.1 Definition . 11
4.2.3.2 Limit . 11
4.2.3.3 Conformance . 11
4.2.4 Spurious emissions . 11
4.2.4.1 Definition . 11
4.2.4.2 Limits . 11
4.2.4.3 Conformance . 13
4.2.5 Out-of-band emissions . 13
4.2.5.1 Definition . 13
4.2.5.2 Limit . 13
4.2.5.3 Conformance . 17
4.2.6 MCOFDM systems: ACLR performance . 17
4.2.6.1 Definition . 17
4.2.6.2 Limit . 17
4.2.6.3 Conformance . 17
4.2.7 MCOFDM systems: MER performance . 17
4.2.7.1 Definition . 17
4.2.7.2 Limit . 17
4.2.7.3 Conformance . 17
4.2.8 Behaviour in case of erroneous ETI signal . 17
4.2.8.1 Definition . 17
4.2.8.2 Limit . 17
4.2.8.3 Conformance . 18
4.2.9 BER-Performance degradation . 18
4.2.9.1 Definition . 18
4.2.9.2 Limit . 18
4.2.9.3 Conformance . 18
5 Testing for compliance with technical requirements . 19
5.1 Environmental conditions for testing . 19
5.2 Interpretation of the measurement results . 19
5.3 Methods of measurement . 19
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4 ETSI EN 302 077 V2.1.1 (2018-06)
5.3.1 Rated output power accuracy . 19
5.3.1.1 Method of measurement . 19
5.3.1.1.1 Initial conditions . 19
5.3.1.1.2 Procedure . 20
5.3.1.1.3 Test requirements . 20
5.3.2 Frequency stability . 20
5.3.2.1 Method of measurement . 20
5.3.2.1.1 Initial conditions . 20
5.3.2.1.2 Procedure . 20
5.3.2.1.3 Test requirements . 21
5.3.3 Crest factor. 21
5.3.3.1 Method of measurement . 21
5.3.3.1.1 Initial conditions . 21
5.3.3.1.2 Procedure . 21
5.3.3.1.3 Test requirements . 21
5.3.4 Spurious emissions . 21
5.3.4.1 Method of measurement . 21
5.3.4.1.1 Initial conditions . 21
5.3.4.1.2 Procedure . 22
5.3.4.1.3 Test requirements . 22
5.3.5 Out-of-band emissions . 22
5.3.5.1 Method of measurement . 22
5.3.5.1.1 Initial conditions . 22
5.3.5.1.2 Procedure . 22
5.3.5.1.3 Test requirements . 22
5.3.6 MCOFDM systems: ACLR . 22
5.3.6.1 Method of measurement . 22
5.3.6.1.1 Initial conditions . 22
5.3.6.1.2 Procedure . 23
5.3.6.1.3 Test requirements . 23
5.3.7 MCOFDM systems: MER . 23
5.3.7.1 Method of measurement . 23
5.3.7.1.1 Initial conditions . 23
5.3.7.1.2 Procedure . 23
5.3.7.1.3 Test requirements . 23
5.3.8 Behaviour in case of erroneous ETI signal . 24
5.3.8.1 Method of measurement . 24
5.3.8.1.1 Initial conditions . 24
5.3.8.1.2 Procedure . 24
5.3.8.1.3 Test requirements . 24
5.3.9 BER-Performance degradation . 24
5.3.9.1 Method of measurement . 24
5.3.9.1.1 Initial conditions . 24
5.3.9.1.2 Procedure . 24
5.3.9.1.3 Test requirements . 24
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 25
Annex B (normative): General measuring arrangements . 27
B.1 Testing arrangements for antenna port measurements . 27
B.1.1 Spurious emissions . 27
B.1.2 Out-of-band emissions . 28
B.1.3 MCOFDM: ACLR and MER performance . 29
B.1.4 Test frequency range . 29
B.1.5 Test modulating signal . 30
Annex C (normative): Typical COFDM measuring arrangements . 31
C.1 ETI errors . 31
C.2 Bit Error performance measurement . 31
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5 ETSI EN 302 077 V2.1.1 (2018-06)
C.2.1 Test procedure . 31
Annex D (informative): Practical measurement of spurious domain emissions . 33
D.1 Introduction . 33
D.2 Directional coupler issues . 33
Annex E (informative): Spectrum measurements . 34
Annex F (informative): MCOFDM systems . 35
F.1 Introduction . 35
F.2 Architecture . 36
Annex G (informative): Change history . 38
History . 39

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6 ETSI EN 302 077 V2.1.1 (2018-06)
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.4] 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: 4 June 2018
Date of latest announcement of this EN (doa): 30 September 2018
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 2019
Date of withdrawal of any conflicting National Standard (dow): 31 March 2020

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.
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7 ETSI EN 302 077 V2.1.1 (2018-06)
1 Scope
The present document specifies technical characteristics and methods of measurements for transmitter equipment for
broadcast sound services using the Digital Audio Broadcast (DAB) modulation system operating in VHF band III
(174 MHz to 240 MHz).
The present document covers the essential requirements of article 3.2 of Directive 2014/53/EU [i.1] under the
conditions identified in annex A.
NOTE: 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.
2 References
2.1 Normative references
References are specific, identified by date of publication and/or edition number or version number. Only the cited
version 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.
[1] ETSI EN 300 401 (V2.1.1) (01-2017): "Radio broadcasting systems; Digital Audio Broadcasting
(DAB) to mobile, portable and fixed receivers".
[2] ETSI ETS 300 799 (Edition 1) (09-1997): "Digital Audio Broadcasting (DAB); Distribution
interfaces; Ensemble Transport Interface (ETI)".
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.
[i.2] ETSI TR 100 028 (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics".
[i.3] ETSI TR 100 028-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics; Part 2".
[i.4] 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.
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8 ETSI EN 302 077 V2.1.1 (2018-06)
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in Directive 2014/53/EU [i.1] and the
following apply:
Adjacent Channel Leakage Ratio (ACLR): ratio of the mean power of the DAB signal in the OFDM block at f to
L
the mean power of the unoccupied OFDM block within the MCOFDM group
antenna port: port of an apparatus which is designed, in normal operation, to be connected to an antenna using coaxial
cable
broadcasting service: radiocommunication service in which the transmissions are intended for direct reception by the
general public
NOTE: This service may include sound transmissions, television transmissions or other types of transmission.
class of emission: set of characteristics of an emission, designated by standard symbols, e.g. type of modulation of the
main carrier, modulating signal, type of information to be transmitted, and also, if appropriate, any additional signal
characteristics
DAB transmitter: device comprising a DAB exciter, RF amplifier and RF system filter
dBc: decibels relative to the unmodulated carrier power of the emission
NOTE: In the cases which do not have a carrier, for example in some digital modulation schemes where the
carrier is not accessible for measurement, the reference level equivalent to dBc is decibels relative to the
mean power P.
enclosure port: physical boundary of the apparatus through which electromagnetic fields may radiate or impinge
NOTE: In the case of integral antenna equipment, this port is inseparable from the antenna port.
exclusion band: band of radio frequencies where no measurements are made
harmonic: component of order greater than 1 of the Fourier series of a periodic quantity
high power transmitter: transmitter whose conducted output power is greater than 1 000 W per OFDM block
intermodulation products: unwanted frequencies resulting from intermodulation between carriers or harmonics of
emission, or between any oscillations generated to produce the carrier
low power transmitter: transmitter whose conducted output power is less than or equal to 25 W per OFDM block
MCOFDM group: group of OFDM blocks generated by a MCOFDM system
MCOFDM system: low power transmitter system that generates more than one OFDM block with an overall RF
system filter spanning all blocks
mean power: average power supplied to the antenna port by a transmitter during an interval of time sufficiently long
compared with the lowest frequency encountered in the modulation envelope taken under normal operating conditions
medium power transmitter: transmitter whose conducted output power is greater than 25 W and less than or equal to
1 000 W per OFDM block
necessary bandwidth: for a given class of emission, the width of the frequency band which is sufficient to ensure the
transmission of information at the rate and with the quality required under specified conditions
OFDM block: group of digitally modulated carriers comprising a complete DAB ensemble
out-of-band emissions: emission on a frequency or frequencies immediately outside the necessary bandwidth which
results from the modulation process, but excluding spurious emissions
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9 ETSI EN 302 077 V2.1.1 (2018-06)
rated output power: conducted power that the transmitter delivers at its output under specified conditions of operation
reference bandwidth: bandwidth in which the emission level is specified
RF system filter: filter connected to the output of the RF amplifier to control output spectrum
NOTE: The RF system filter may be internal or external to the transmitter casing.
RMS power: apparent power of an AC power that is calculated by multiplying root-mean-square (rms) current by the
root mean square voltage
NOTE 1: In a purely resistive circuit this is held to be the equivalent heating effect of a DC power and can be
deemed to be true power. In a circuit that consists of reactance as well as resistance the apparent power is
greater than the true power (the vector difference between true power and apparent power is called
reactive power).
True Power = Vrms × (Irms ∆ cos φ)
Where Δ cos φ is the phase difference between voltage and current introduced by the reactance of the
load.
NOTE 2: From note 1 it becomes clear that unless any measuring system can be completely devoid of reactance
then the measured power cannot be considered to be RMS power. It therefore becomes apparent that this
parameter would be difficult to measure with any degree of accuracy at RF frequencies.
spurious emissions: emissions on a frequency or frequencies which are outside the necessary bandwidth and the level
of which may be reduced without affecting the corresponding transmission of information.
NOTE: Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and
frequency conversion products but exclude out of band emissions.
unwanted emissions: consist of spurious emissions and out-of-band emissions
3.2 Symbols
For the purposes of the present document, the following symbols apply:
" inch
C/N Carrier power to Noise power density
Hz Hertz (cycles per second)
m metre
-6
μ micro, 10
V Volt
W Watt
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ACLR Adjacent Channel Leakage Ratio
BER Bit Error Ratio
COFDM Coded Orthogonal Frequency Division Multiplex
CRC Cyclic Redundancy Check
CW Continuous Wave
DAB Digital Audio Broadcasting
EDI Encapsulation of DAB Interfaces
EMC ElectroMagnetic Compatibility
ETI Ensemble Transport Interface
EUT Equipment Under Test
MCOFDM Multiple Coded Orthogonal Frequency Division Multiplex
MER Modulation Error Ratio
N Noise power
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10 ETSI EN 302 077 V2.1.1 (2018-06)
OFDM Orthogonal Frequency Division Multiplex
PRBS Pseudo Random Binary Sequence
RF Radio Frequency
rms root mean square
SFN Single Frequency Network
TII Transmitter Identification Information
Tx Transmitter
VHF Very High Frequency
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 declared by the manufacturer. The equipment shall comply with all the technical
requirements of the present document which are identified as applicable in annex A at all times when operating within
the boundary limits of the declared operational environmental profile.
4.2 Conformance requirements
4.2.1 Rated output power accuracy
4.2.1.1 Definition
The rated output power is the conducted power that the transmitter shall deliver at its antenna port under the
manufacturers specified conditions of operation. It is, however, recommended that this parameter is not quoted as RMS
power.
For MCOFDM systems, the rated output power is the conducted power of the highest powered OFDM block within the
MCOFDM group.
Transmitters shall be categorized into one of three power classes, as follows:
• low power;
• medium power;
• high power.
4.2.1.2 Limit
The output power shall be within -0,5 dB of the rated output power under normal operating conditions as defined by the
manufacturer.
4.2.1.3 Conformance
Conformance tests as defined in clause 5.3.1 shall be carried out.
4.2.2 Frequency stability
4.2.2.1 Definition
The frequency stability of an emission is the variation of frequency against a predetermined time scale.
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11 ETSI EN 302 077 V2.1.1 (2018-06)
4.2.2.2 Limit
The centre frequency of the RF signal shall not deviate more than 10 % of the relevant carrier spacing from its nominal
value. In transmission mode I, the limit is 100 Hz.
The stability of the centre frequency shall not deviate more than 1 % of the relevant carrier spacing from its nominal
value within a three month period when measured under identical operating conditions at the start and at the end of the
period. In transmission mode I, the limit is 10 Hz.
4.2.2.3 Conformance
Conformance tests as defined in clause 5.3.2 shall be carried out.
4.2.3 Crest factor
4.2.3.1 Definition
Maximum ratio of peak power to mean power levels.
4.2.3.2 Limit
The peak level of the output RF power signal shall not exceed the mean power level by more than 13 dB.
4.2.3.3 Conformance
Conformance tests as defined in clause 5.3.3 shall be carried out.
4.2.4 Spurious emissions
4.2.4.1 Definition
Emission on a frequency or frequencies which are outside the necessary bandwidth and the level of which may be
reduced without affecting the corresponding transmission of information. Spurious emissions include harmonic
emissions, parasitic emissions, intermodulation products and frequency conversion products but exclude out-of-band
emissions.
For the purposes of the present document spurious emissions are emissions at frequencies below f - 3 MHz, where f
L L
is the centre frequency of the lowest frequency OFDM block, and above f + 3 MHz, where f is the centre frequency
H H
of the highest frequency OFDM block of the transmission, irrespective of the number of blocks employed. In the case of
a single block transmitter, f = f .
L H
4.2.4.2 Limits
Spurious emissions shall not exceed the values set out in table 1, shown additionally in figure 1 and figure 2, for the
frequency range 9 kHz to 1 GHz at the output of the RF system filter.
Table 1: Spurious emissions limits
Frequency range of the Limits of the spurious emission Reference Figure
spurious emission bandwidth
(kHz)
9 kHz to 174 MHz -36 dBm (250 nW). 100 1
> 174 MHz to 400 MHz -82 dBm for low power transmitters; 2
-126 dBc for medium power transmitters; 4
-66 dBm for high power transmitters.
> 400 MHz to 1 000 MHz -36 dBm (250 nW). 100 1
NOTE: The power category of the transmitter is defined in clause 4.2.1.

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12 ETSI EN 302 077 V2.1.1 (2018-06)

Figure 1: Spurious emissions limits for DAB transmitters
(100 kHz reference bandwidth)
ETSI
13 ETSI EN 302 077 V2.1.1 (2018-06)

Figure 2: Spurious emissions limits for DAB transmitters
(4 kHz reference bandwidth)
4.2.4.3 Conformance
Conformance tests as defined in clause 5.3.4 shall be carried out.
4.2.5 Out-of-band emissions
4.2.5.1 Definition
Emission on a frequency or frequencies immediately outside the necessary bandwidth which results from the
modulation process, but excludes spurious emissions.
For the purposes of the present document out-of-band emissions are emissions at frequencies outside the necessary
bandwidth and within the frequency ranges f - 3 MHz to f , where f is the centre frequency of the lowest frequency
L L L
OFDM block, and f to f + 3 MHz, where f is the centre frequency of the highest frequency OFDM block of the
H H H
transmission, irrespective of the number of blocks employed. In the case of a single block transmitter, f = f .
L H
4.2.5.2 Limit
Out-of-band emissions shall not exceed the limits specified in tables 2 to 5, additionally shown in figure 3 and figure 4.
Out-of-band emissions limits are given as mean power level measured in a 4 kHz bandwidth, where 0 dB corresponds
to the mean output power.
Unless otherwise stated by licence condition it shall be assumed that the EUT conforms to the non-critical case
(case 2).
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14 ETSI EN 302 077 V2.1.1 (2018-06)
Case 1: The solid line mask (see figure 3) shall apply to DAB transmitters operating in areas critical for adjacent
channel DAB to DAB interference, and in any case when it is necessary to protect other services operating
on adjacent frequencies on a primary basis.
Case 2: The dashed line mask (see figure 3) shall apply to DAB transmitters in other cases.
Case 3: The solid line mask (see figure 4) shall apply to DAB transmitters in exceptional circumstances to protect
safety services.
Case 4: The chain dotted line mask (see figure 4) shall apply to DAB transmitters operating on a case by case
basis in certain areas.
Table 2: Case 1: Transmitters operating in critical cases
1,54 MHz block, Low power Medium power High Power
frequency difference from Absolute level Relative level Absolute level
the centre frequency (dBm) (dBc) (dBm)
(MHz)
±0,77 18 -26 34
±0,97 -27 -71 -11
±1,75 -62 -106 -46
±3,0 -62 -106 -46
Table 3: Case 2: Transmitters operating in uncritical cases
1,54 MHz block, Low power Medium power High Power
frequency difference from Absolute level Relative level Absolute level
the centre frequency (dBm) (dBc) (dBm)
(MHz)
±0,97 18 -26 34
±0,97 -12 -56 4
±3,0 -62 -106 -46
Table 4: Case 3: Transmitters operating in exceptional circumstances to protect safety services
1,54 MHz block, Low power Medium power High Power
frequency difference from Absolute level Relative level Absolute level
the centre frequency (dBm) (dBc) (dBm)
(MHz)
±0,77 18 -26 34
±0,97 -27 -71 -11
±2,2 -82 -126 -66
±3,0 -82 -126 -66
Table 5: Case 4: Transmitters operating on a case by case basis in certain areas
1,54 MHz block, Low power Medium power High Power
frequency difference from Absolute level Relative level Absolute level
the centre frequency (dBm) (dBc) (dBm)
(MHz)
±0,77 18 -26 34
±0,97 -34 -78 -18
±2,2 -82 -126 -66
±3,0 -82 -126 -66
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15 ETSI EN 302 077 V2.1.1 (2018-06)

Figure 3: Spectrum masks for DAB out-of-band emissions (case 1 and case 2)
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16 ETSI EN 302 077 V2.1.1 (2018-06)

Figure 4: Spectrum masks for DAB out-of-band emissions (case 3 and case 4)
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17 ETSI EN 302 077 V2.1.1 (2018-06)
4.2.5.3 Conformance
Conformance tests as defined in clause 5.3.5 shall be carried out.
4.2.6 MCOFDM systems: ACLR performance
4.2.6.1 Definition
Adjacent channel performance required for unoccupied OFDM blocks within the MCOFDM group.
The ACLR is defined as the ratio of the mean power of the DAB signal in the OFDM block at f to the mean power of
L
the unoccupied OFDM block within the MCOFDM group.
Out-of-band emissions which fall between f and f within the MCOFDM group are not influenced by the RF system
L H
filter. Every unoccupied OFDM block within the MCOFDM group shall be subject to an ACLR limit.
4.2.6.2 Limit
For each unoccupied OFDM block within the MCOFDM group, the ACLR shall be less than 55 dB.
4.2.6.3 Conformance
Conformance tests as defined in clause 5.3.6 shall be carried out.
4.2.7 MCOFDM systems: MER performance
4.2.7.1 Definition
MER performance required for every occupied OFDM block within the MCOFDM group.
4.2.7.2 Limit
For every occupied OFDM block within the MCOFDM group, the MER shall be ≥ 20 dB.
4.2.7.3 Conformance
Conformance tests as defined in clause 5.3.7 shall be carried out.
4.2.8 Behaviour in case of erroneous ETI signal
4.2.8.1 Definition
Operational status of transmitter during ETI signal error (see ETSI ETS 300 799 [2], clauses 4 to 8).
4.2.8.2 Limit
The minimum requirements for DAB transmitters shall be:
• P = 4;
• Q = 40;
• M = 80.
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18 ETSI EN 302 077 V2.1.1 (2018-06)
If the input signal is absent, or if frame synchronization is not achieved, the transmitter RF signal shall be muted in line
with spurious emission limits, clause 4.2.4.2.
If frame synchronization is achieved, but CRC violations are detected, the transmitter shall offer two alternative
responses:
a) The output RF signal is not affected by sporadic single CRC violations. The output RF signal is switched off
after P CRC violations in Q frames, and switched on after M consecutive frames free from CRC violations.
b) The output RF signal is transmitted irrespective of CRC violations.
After the warming-up time of the transmitter the output RF signal shall be stable within two seconds following the
application of an error-free input signal.
4.2.8.3 Conformance
Conformance tests as defined in clause 5.3.8 shall be carried out.
4.2.9 BER-Performance degradation
4.2.9.1 Definition
Difference between theoretical and actual BER degradation.
4.2.9.2 Limit
An operational transmitter shall not degrade the theoretical system BER (with channel coding and decoding) by more
than 1 dB, under the conditions set out in table 6 and table 7.
Table 6: BER Performance degradation limits
Code Rate R for equal convolutional coding 0,5
Theoretical performance according to table 7

Table 7: BER Performance degradation limits
BER C/N
-2
5,0 dB
1 ×
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Oddajniška oprema za storitev digitalne zvokovne radiodifuzije (DAB) - Harmonizirani standard za dostop do radijskega spektraTransmitting equipment for the Digital Audio Broadcasting (DAB) service - Harmonised Standard for access to radio spectrum33.170Televizijska in radijska difuzijaTelevision and radio broadcasting33.060.20Sprejemna in oddajna opremaReceiving and transmitting equipmentICS:Ta slovenski standard je istoveten z:ETSI EN 302 077 V2.1.1 (2018-06)SIST EN 302 077 V2.1.1:2018en01-september-2018SIST EN 302 077 V2.1.1:2018SLOVENSKI
STANDARD
HARMONISED EUROPEAN STANDARD SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 2
Reference REN/ERM-TG17-015 Keywords audio, broadcasting, DAB, digital, harmonised standard, radio, regulation ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTETM are trademarks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSM® and the GSM logo are trademarks registered and owned by the GSM Association. SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 3 Contents Intellectual Property Rights . 6 Foreword . 6 Modal verbs terminology . 6 1 Scope . 7 2 References . 7 2.1 Normative references . 7 2.2 Informative references . 7 3 Definitions, symbols and abbreviations . 8 3.1 Definitions . 8 3.2 Symbols . 9 3.3 Abbreviations . 9 4 Technical requirements specifications . 10 4.1 Environmental profile . 10 4.2 Conformance requirements . 10 4.2.1 Rated output power accuracy . 10 4.2.1.1 Definition . 10 4.2.1.2 Limit . 10 4.2.1.3 Conformance . 10 4.2.2 Frequency stability . 10 4.2.2.1 Definition . 10 4.2.2.2 Limit . 11 4.2.2.3 Conformance . 11 4.2.3 Crest factor. 11 4.2.3.1 Definition . 11 4.2.3.2 Limit . 11 4.2.3.3 Conformance . 11 4.2.4 Spurious emissions . 11 4.2.4.1 Definition . 11 4.2.4.2 Limits . 11 4.2.4.3 Conformance . 13 4.2.5 Out-of-band emissions . 13 4.2.5.1 Definition . 13 4.2.5.2 Limit . 13 4.2.5.3 Conformance . 17 4.2.6 MCOFDM systems: ACLR performance . 17 4.2.6.1 Definition . 17 4.2.6.2 Limit . 17 4.2.6.3 Conformance . 17 4.2.7 MCOFDM systems: MER performance . 17 4.2.7.1 Definition . 17 4.2.7.2 Limit . 17 4.2.7.3 Conformance . 17 4.2.8 Behaviour in case of erroneous ETI signal . 17 4.2.8.1 Definition . 17 4.2.8.2 Limit . 17 4.2.8.3 Conformance . 18 4.2.9 BER-Performance degradation . 18 4.2.9.1 Definition . 18 4.2.9.2 Limit . 18 4.2.9.3 Conformance . 18 5 Testing for compliance with technical requirements . 19 5.1 Environmental conditions for testing . 19 5.2 Interpretation of the measurement results . 19 5.3 Methods of measurement . 19 SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 4 5.3.1 Rated output power accuracy . 19 5.3.1.1 Method of measurement . 19 5.3.1.1.1 Initial conditions . 19 5.3.1.1.2 Procedure . 20 5.3.1.1.3 Test requirements . 20 5.3.2 Frequency stability . 20 5.3.2.1 Method of measurement . 20 5.3.2.1.1 Initial conditions . 20 5.3.2.1.2 Procedure . 20 5.3.2.1.3 Test requirements . 21 5.3.3 Crest factor. 21 5.3.3.1 Method of measurement . 21 5.3.3.1.1 Initial conditions . 21 5.3.3.1.2 Procedure . 21 5.3.3.1.3 Test requirements . 21 5.3.4 Spurious emissions . 21 5.3.4.1 Method of measurement . 21 5.3.4.1.1 Initial conditions . 21 5.3.4.1.2 Procedure . 22 5.3.4.1.3 Test requirements . 22 5.3.5 Out-of-band emissions . 22 5.3.5.1 Method of measurement . 22 5.3.5.1.1 Initial conditions . 22 5.3.5.1.2 Procedure . 22 5.3.5.1.3 Test requirements . 22 5.3.6 MCOFDM systems: ACLR . 22 5.3.6.1 Method of measurement . 22 5.3.6.1.1 Initial conditions . 22 5.3.6.1.2 Procedure . 23 5.3.6.1.3 Test requirements . 23 5.3.7 MCOFDM systems: MER . 23 5.3.7.1 Method of measurement . 23 5.3.7.1.1 Initial conditions . 23 5.3.7.1.2 Procedure . 23 5.3.7.1.3 Test requirements . 23 5.3.8 Behaviour in case of erroneous ETI signal . 24 5.3.8.1 Method of measurement . 24 5.3.8.1.1 Initial conditions . 24 5.3.8.1.2 Procedure . 24 5.3.8.1.3 Test requirements . 24 5.3.9 BER-Performance degradation . 24 5.3.9.1 Method of measurement . 24 5.3.9.1.1 Initial conditions . 24 5.3.9.1.2 Procedure . 24 5.3.9.1.3 Test requirements . 24 Annex A (informative): Relationship between the present document and the essential requirements of Directive 2014/53/EU . 25 Annex B (normative): General measuring arrangements . 27 B.1 Testing arrangements for antenna port measurements . 27 B.1.1 Spurious emissions . 27 B.1.2 Out-of-band emissions . 28 B.1.3 MCOFDM: ACLR and MER performance . 29 B.1.4 Test frequency range . 29 B.1.5 Test modulating signal . 30 Annex C (normative): Typical COFDM measuring arrangements . 31 C.1 ETI errors . 31 C.2 Bit Error performance measurement . 31 SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 5 C.2.1 Test procedure . 31 Annex D (informative): Practical measurement of spurious domain emissions . 33 D.1 Introduction . 33 D.2 Directional coupler issues . 33 Annex E (informative): Spectrum measurements . 34 Annex F (informative): MCOFDM systems . 35 F.1 Introduction . 35 F.2 Architecture . 36 Annex G (informative): Change history . 38 History . 39
ETSI ETSI EN 302 077 V2.1.1 (2018-06) 6 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.4] 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: 4 June 2018 Date of latest announcement of this EN (doa): 30 September 2018 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 March 2019 Date of withdrawal of any conflicting National Standard (dow): 31 March 2020
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. SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 7 1 Scope The present document specifies technical characteristics and methods of measurements for transmitter equipment for broadcast sound services using the Digital Audio Broadcast (DAB) modulation system operating in VHF band III
(174 MHz to 240 MHz). The present document covers the essential requirements of article 3.2 of Directive 2014/53/EU [i.1] under the conditions identified in annex A. NOTE: 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. 2 References 2.1 Normative references References are specific, identified by date of publication and/or edition number or version number. Only the cited version 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. [1] ETSI EN 300 401 (V2.1.1) (01-2017): "Radio broadcasting systems; Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers". [2] ETSI ETS 300 799 (Edition 1) (09-1997): "Digital Audio Broadcasting (DAB); Distribution interfaces; Ensemble Transport Interface (ETI)". 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. [i.2] ETSI TR 100 028 (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics". [i.3] ETSI TR 100 028-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics; Part 2". [i.4] 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. SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 8 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in Directive 2014/53/EU [i.1] and the following apply: Adjacent Channel Leakage Ratio (ACLR): ratio of the mean power of the DAB signal in the OFDM block at fL to the mean power of the unoccupied OFDM block within the MCOFDM group antenna port: port of an apparatus which is designed, in normal operation, to be connected to an antenna using coaxial cable broadcasting service: radiocommunication service in which the transmissions are intended for direct reception by the general public NOTE: This service may include sound transmissions, television transmissions or other types of transmission. class of emission: set of characteristics of an emission, designated by standard symbols, e.g. type of modulation of the main carrier, modulating signal, type of information to be transmitted, and also, if appropriate, any additional signal characteristics DAB transmitter: device comprising a DAB exciter, RF amplifier and RF system filter dBc: decibels relative to the unmodulated carrier power of the emission NOTE: In the cases which do not have a carrier, for example in some digital modulation schemes where the carrier is not accessible for measurement, the reference level equivalent to dBc is decibels relative to the mean power P. enclosure port: physical boundary of the apparatus through which electromagnetic fields may radiate or impinge NOTE: In the case of integral antenna equipment, this port is inseparable from the antenna port. exclusion band: band of radio frequencies where no measurements are made harmonic: component of order greater than 1 of the Fourier series of a periodic quantity high power transmitter: transmitter whose conducted output power is greater than 1 000 W per OFDM block intermodulation products: unwanted frequencies resulting from intermodulation between carriers or harmonics of emission, or between any oscillations generated to produce the carrier low power transmitter: transmitter whose conducted output power is less than or equal to 25 W per OFDM block MCOFDM group: group of OFDM blocks generated by a MCOFDM system MCOFDM system: low power transmitter system that generates more than one OFDM block with an overall RF system filter spanning all blocks mean power: average power supplied to the antenna port by a transmitter during an interval of time sufficiently long compared with the lowest frequency encountered in the modulation envelope taken under normal operating conditions medium power transmitter: transmitter whose conducted output power is greater than 25 W and less than or equal to 1 000 W per OFDM block necessary bandwidth: for a given class of emission, the width of the frequency band which is sufficient to ensure the transmission of information at the rate and with the quality required under specified conditions OFDM block: group of digitally modulated carriers comprising a complete DAB ensemble out-of-band emissions: emission on a frequency or frequencies immediately outside the necessary bandwidth which results from the modulation process, but excluding spurious emissions SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 9 rated output power: conducted power that the transmitter delivers at its output under specified conditions of operation reference bandwidth: bandwidth in which the emission level is specified RF system filter: filter connected to the output of the RF amplifier to control output spectrum NOTE: The RF system filter may be internal or external to the transmitter casing. RMS power: apparent power of an AC power that is calculated by multiplying root-mean-square (rms) current by the root mean square voltage NOTE 1: In a purely resistive circuit this is held to be the equivalent heating effect of a DC power and can be deemed to be true power. In a circuit that consists of reactance as well as resistance the apparent power is greater than the true power (the vector difference between true power and apparent power is called reactive power).
True Power = Vrms × (Irms ∆ cos φ)
Where Δ cos φ is the phase difference between voltage and current introduced by the reactance of the load. NOTE 2: From note 1 it becomes clear that unless any measuring system can be completely devoid of reactance then the measured power cannot be considered to be RMS power. It therefore becomes apparent that this parameter would be difficult to measure with any degree of accuracy at RF frequencies. spurious emissions: emissions on a frequency or frequencies which are outside the necessary bandwidth and the level of which may be reduced without affecting the corresponding transmission of information. NOTE: Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and frequency conversion products but exclude out of band emissions. unwanted emissions: consist of spurious emissions and out-of-band emissions 3.2 Symbols For the purposes of the present document, the following symbols apply: " inch C/N Carrier power to Noise power density Hz Hertz (cycles per second) m metre μ micro, 10-6 V Volt W Watt 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: ACLR Adjacent Channel Leakage Ratio BER Bit Error Ratio COFDM Coded Orthogonal Frequency Division Multiplex CRC Cyclic Redundancy Check CW Continuous Wave DAB Digital Audio Broadcasting EDI Encapsulation of DAB Interfaces EMC ElectroMagnetic Compatibility ETI Ensemble Transport Interface EUT Equipment Under Test MCOFDM Multiple Coded Orthogonal Frequency Division Multiplex MER Modulation Error Ratio N Noise power SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 10 OFDM Orthogonal Frequency Division Multiplex PRBS Pseudo Random Binary Sequence RF Radio Frequency rms root mean square SFN Single Frequency Network TII Transmitter Identification Information Tx Transmitter VHF Very High Frequency 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 declared by the manufacturer. The equipment shall comply with all the technical requirements of the present document which are identified as applicable in annex A at all times when operating within the boundary limits of the declared operational environmental profile. 4.2 Conformance requirements 4.2.1 Rated output power accuracy 4.2.1.1 Definition The rated output power is the conducted power that the transmitter shall deliver at its antenna port under the manufacturers specified conditions of operation. It is, however, recommended that this parameter is not quoted as RMS power. For MCOFDM systems, the rated output power is the conducted power of the highest powered OFDM block within the MCOFDM group. Transmitters shall be categorized into one of three power classes, as follows: • low power; • medium power; • high power. 4.2.1.2 Limit The output power shall be within -0,5 dB of the rated output power under normal operating conditions as defined by the manufacturer. 4.2.1.3 Conformance Conformance tests as defined in clause 5.3.1 shall be carried out. 4.2.2 Frequency stability 4.2.2.1 Definition The frequency stability of an emission is the variation of frequency against a predetermined time scale. SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 11 4.2.2.2 Limit The centre frequency of the RF signal shall not deviate more than 10 % of the relevant carrier spacing from its nominal value. In transmission mode I, the limit is 100 Hz. The stability of the centre frequency shall not deviate more than 1 % of the relevant carrier spacing from its nominal value within a three month period when measured under identical operating conditions at the start and at the end of the period. In transmission mode I, the limit is 10 Hz. 4.2.2.3 Conformance Conformance tests as defined in clause 5.3.2 shall be carried out. 4.2.3 Crest factor 4.2.3.1 Definition Maximum ratio of peak power to mean power levels. 4.2.3.2 Limit The peak level of the output RF power signal shall not exceed the mean power level by more than 13 dB. 4.2.3.3 Conformance Conformance tests as defined in clause 5.3.3 shall be carried out. 4.2.4 Spurious emissions 4.2.4.1 Definition Emission on a frequency or frequencies which are outside the necessary bandwidth and the level of which may be reduced without affecting the corresponding transmission of information. Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and frequency conversion products but exclude out-of-band emissions. For the purposes of the present document spurious emissions are emissions at frequencies below fL - 3 MHz, where fL is the centre frequency of the lowest frequency OFDM block, and above fH + 3 MHz, where fH is the centre frequency of the highest frequency OFDM block of the transmission, irrespective of the number of blocks employed. In the case of a single block transmitter, fL = fH. 4.2.4.2 Limits Spurious emissions shall not exceed the values set out in table 1, shown additionally in figure 1 and figure 2, for the frequency range 9 kHz to 1 GHz at the output of the RF system filter. Table 1: Spurious emissions limits Frequency range of the spurious emission Limits of the spurious emission Reference bandwidth (kHz) Figure 9 kHz to 174 MHz
-36 dBm (250 nW). 100 1 > 174 MHz to 400 MHz
-82 dBm for low power transmitters;
-126 dBc for medium power transmitters;
-66 dBm for high power transmitters.
4 2 > 400 MHz to 1 000 MHz
-36 dBm (250 nW). 100 1 NOTE: The power category of the transmitter is defined in clause 4.2.1.
ETSI ETSI EN 302 077 V2.1.1 (2018-06) 12
Figure 1: Spurious emissions limits for DAB transmitters (100 kHz reference bandwidth) SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 13
Figure 2: Spurious emissions limits for DAB transmitters (4 kHz reference bandwidth) 4.2.4.3 Conformance Conformance tests as defined in clause 5.3.4 shall be carried out. 4.2.5 Out-of-band emissions 4.2.5.1 Definition Emission on a frequency or frequencies immediately outside the necessary bandwidth which results from the modulation process, but excludes spurious emissions. For the purposes of the present document out-of-band emissions are emissions at frequencies outside the necessary bandwidth and within the frequency ranges fL - 3 MHz to fL, where fL is the centre frequency of the lowest frequency OFDM block, and fH to fH + 3 MHz, where fH is the centre frequency of the highest frequency OFDM block of the transmission, irrespective of the number of blocks employed. In the case of a single block transmitter, fL = fH. 4.2.5.2 Limit Out-of-band emissions shall not exceed the limits specified in tables 2 to 5, additionally shown in figure 3 and figure 4. Out-of-band emissions limits are given as mean power level measured in a 4 kHz bandwidth, where 0 dB corresponds to the mean output power. Unless otherwise stated by licence condition it shall be assumed that the EUT conforms to the non-critical case
(case 2). SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 14 Case 1: The solid line mask (see figure 3) shall apply to DAB transmitters operating in areas critical for adjacent channel DAB to DAB interference, and in any case when it is necessary to protect other services operating on adjacent frequencies on a primary basis. Case 2: The dashed line mask (see figure 3) shall apply to DAB transmitters in other cases. Case 3: The solid line mask (see figure 4) shall apply to DAB transmitters in exceptional circumstances to protect safety services. Case 4: The chain dotted line mask (see figure 4) shall apply to DAB transmitters operating on a case by case basis in certain areas. Table 2: Case 1: Transmitters operating in critical cases 1,54 MHz block, frequency difference from the centre frequency (MHz) Low power Absolute level (dBm) Medium power Relative level (dBc) High Power Absolute level (dBm) ±0,77 18 -26 34 ±0,97 -27 -71 -11 ±1,75 -62 -106 -46 ±3,0 -62 -106 -46
Table 3: Case 2: Transmitters operating in uncritical cases 1,54 MHz block, frequency difference from the centre frequency (MHz) Low power Absolute level (dBm) Medium power Relative level (dBc) High Power Absolute level (dBm) ±0,97 18 -26 34 ±0,97 -12 -56 4 ±3,0 -62 -106 -46
Table 4: Case 3: Transmitters operating in exceptional circumstances to protect safety services 1,54 MHz block, frequency difference from the centre frequency (MHz) Low power Absolute level (dBm) Medium power Relative level (dBc) High Power Absolute level (dBm) ±0,77 18 -26 34 ±0,97 -27 -71 -11 ±2,2 -82 -126 -66 ±3,0 -82 -126 -66
Table 5: Case 4: Transmitters operating on a case by case basis in certain areas 1,54 MHz block, frequency difference from the centre frequency (MHz) Low power Absolute level (dBm) Medium power Relative level (dBc) High Power Absolute level (dBm) ±0,77 18 -26 34 ±0,97 -34 -78 -18 ±2,2 -82 -126 -66 ±3,0 -82 -126 -66
ETSI ETSI EN 302 077 V2.1.1 (2018-06) 15
Figure 3: Spectrum masks for DAB out-of-band emissions (case 1 and case 2) SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 16
Figure 4: Spectrum masks for DAB out-of-band emissions (case 3 and case 4) SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 17 4.2.5.3 Conformance Conformance tests as defined in clause 5.3.5 shall be carried out. 4.2.6 MCOFDM systems: ACLR performance 4.2.6.1 Definition Adjacent channel performance required for unoccupied OFDM blocks within the MCOFDM group. The ACLR is defined as the ratio of the mean power of the DAB signal in the OFDM block at fL to the mean power of the unoccupied OFDM block within the MCOFDM group. Out-of-band emissions which fall between fL and fH within the MCOFDM group are not influenced by the RF system filter. Every unoccupied OFDM block within the MCOFDM group shall be subject to an ACLR limit. 4.2.6.2 Limit For each unoccupied OFDM block within the MCOFDM group, the ACLR shall be less than 55 dB. 4.2.6.3 Conformance Conformance tests as defined in clause 5.3.6 shall be carried out. 4.2.7 MCOFDM systems: MER performance 4.2.7.1 Definition MER performance required for every occupied OFDM block within the MCOFDM group. 4.2.7.2 Limit For every occupied OFDM block within the MCOFDM group, the MER shall be ≥ 20 dB. 4.2.7.3 Conformance Conformance tests as defined in clause 5.3.7 shall be carried out. 4.2.8 Behaviour in case of erroneous ETI signal 4.2.8.1 Definition Operational status of transmitter during ETI signal error (see ETSI ETS 300 799 [2], clauses 4 to 8). 4.2.8.2 Limit The minimum requirements for DAB transmitters shall be: • P = 4; • Q = 40; • M = 80. SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 18 If the input signal is absent, or if frame synchronization is not achieved, the transmitter RF signal shall be muted in line with spurious emission limits, clause 4.2.4.2. If frame synchronization is achieved, but CRC violations are detected, the transmitter shall offer two alternative responses: a) The output RF signal is not affected by sporadic single CRC violations. The output RF signal is switched off after P CRC violations in Q frames, and switched on after M consecutive frames free from CRC violations. b) The output RF signal is transmitted irrespective of CRC violations. After the warming-up time of the transmitter the output RF signal shall be stable within two seconds following the application of an error-free input signal. 4.2.8.3 Conformance Conformance tests as defined in clause 5.3.8 shall be carried out. 4.2.9 BER-Performance degradation 4.2.9.1 Definition Difference between theoretical and actual BER degradation. 4.2.9.2 Limit An operational transmitter shall not degrade the theoretical system BER (with channel coding and decoding) by more than 1 dB, under the conditions set out in table 6 and table 7. Table 6: BER Performance degradation limits Code Rate R for equal convolutional coding 0,5 Theoretical performance according to table 7
Table 7: BER Performance degradation limits BER C/N 1 × 10-2 5,0 dB 3 × 10-3 5,4 dB 1 × 10-3 5,8 dB 3 × 10-4 6,2 dB 1 × 10-4 6,6 dB 3 × 10-5 6,9 dB 1 × 10-5 7,2 dB 3 × 10-6 7,5 dB 1 × 10-6 7,8 dB
4.2.9.3 Conformance Conformance tests as defined in clause 5.3.9 shall be carried out. SIST EN 302 077 V2.1.1:2018

ETSI ETSI EN 302 077 V2.1.1 (2018-06) 19 5 Testing for compliance with technical requirements 5.1 Environmental conditions for testing Tests define
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