ETSI EN 303 340 V1.2.1 (2020-09)
Digital Terrestrial TV Broadcast Receivers; Harmonised Standard for access to radio spectrum
Digital Terrestrial TV Broadcast Receivers; Harmonised Standard for access to radio spectrum
REN/ERM-TG17-32
TV sprejemniki digitalne prizemne radiodifuzije - Harmonizirani standard za dostop do radijskega spektra
General Information
Standards Content (Sample)
Draft ETSI EN 303 340 V1.2.0 (2020-06)
HARMONISED EUROPEAN STANDARD
Digital Terrestrial TV Broadcast Receivers;
Harmonised Standard for access to radio spectrum
2 Draft ETSI EN 303 340 V1.2.0 (2020-06)
Reference
REN/ERM-TG17-32
Keywords
broadcast, digital, harmonised standard, radio,
receiver
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3 Draft ETSI EN 303 340 V1.2.0 (2020-06)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 8
3.3 Abbreviations . 9
4 Technical requirements specifications . 10
4.1 Environmental profile . 10
4.2 Conformance requirements . 10
4.2.1 DVB-T and DVB-T2 configurations for testing . 10
4.2.1.1 Modulation Parameters . 10
4.2.1.2 Receiver Configuration . 11
4.2.2 Interference and wanted test signals . 11
4.2.3 Sensitivity . 11
4.2.3.1 Definition . 11
4.2.3.2 Method of Measurement . 11
4.2.3.2.1 Test arrangement description . 11
4.2.3.2.2 Test procedure . 12
4.2.3.3 Limits . 12
4.2.4 Adjacent channel selectivity . 13
4.2.4.1 Definition . 13
4.2.4.2 Method of Measurement . 13
4.2.4.2.1 Test arrangement description . 13
4.2.4.2.2 Requirements for the ACLR of the interfering signal . 13
4.2.4.2.3 Test procedure . 13
4.2.4.3 Limits . 15
4.2.5 Blocking . 16
4.2.5.1 Definition . 16
4.2.5.2 Method of Measurement . 16
4.2.5.2.1 Test arrangement description . 16
4.2.5.2.2 Requirements for the ACLR of the interfering signal . 16
4.2.5.2.3 Test procedure . 16
4.2.5.3 Limits . 16
4.2.6 Overloading . 17
4.2.6.1 Definition . 17
4.2.6.2 Method of Measurement . 17
4.2.6.2.1 Test arrangement description . 17
4.2.6.2.2 Requirements for the ACLR of the interfering signal . 17
4.2.6.2.3 Test procedure . 17
4.2.6.3 Limits . 18
5 Testing for compliance with technical requirements . 18
5.1 Environmental conditions for testing . 18
5.2 Void . 18
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 19
Annex B (informative): Summary of study work . 20
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4 Draft ETSI EN 303 340 V1.2.0 (2020-06)
B.1 Overview . 20
B.2 Selection of interferer waveforms . 20
B.2.1 UE waveform . 20
B.2.2 BS waveforms . 21
B.3 Reception conditions for LTE UE 700 MHz interference . 23
B.3.1 Calculation of maximum coupling gain . 23
B.3.2 Calculation of maximum received UE interference power . 24
B.4 Choice of BS interference power in receiver tests . 24
Annex C (informative): Measurement records . 25
Annex D (informative): Additional information to assist measurements . 27
D.1 Optional elements of the test arrangement . 27
D.2 Instrument settings for measuring the power of bursty interference signals . 27
D.3 Improving ACLR . 27
D.4 Measuring ACLR . 28
Annex E (normative): Applicable tests . 29
E.1 Applicable tests for different receiver variants . 29
Annex F (normative): Requirements for the interfering signal minimum ACLR . 31
Annex G (informative): Justification of omitted receiver parameters . 32
G.1 Receiver parameters omitted . 32
G.1.1 Co-channel rejection. 32
G.1.2 Spurious response rejection . 32
G.1.3 Intermodulation . 32
G.1.3.0 General . 32
G.1.3.1 Second order intermodulation . 33
G.1.3.2 Third order intermodulation . 33
G.1.4 Dynamic range . 33
G.1.5 Reciprocal mixing . 33
G.1.6 Desensitisation . 34
Annex H (informative): Change History . 35
History . 36
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5 Draft ETSI EN 303 340 V1.2.0 (2020-06)
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
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 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.11] 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.3].
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.
The present document has a number of interference test data files that are contained in archive
en_303340v010200a0.zip which accompanies the present document.
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.
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6 Draft ETSI EN 303 340 V1.2.0 (2020-06)
1 Scope
The present document specifies technical characteristics and methods of measurements for digital terrestrial television
broadcast receivers fitted with an external antenna input (tuner port) capable of receiving DVB-T and/or DVB-T2
signals.
Receivers without external antenna connectors, receivers with diversity, and receivers intended for mobile or
automotive reception are not covered by the present document.
NOTE: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.3] is given in annex A.
The present document includes considerations of interference from LTE transmissions in the 700 MHz and 800 MHz
bands and DTT transmissions in UHF band IV. The requirements of the installation system (antenna, feeder cable,
amplifiers, etc.) are not addressed.
Table 1: Broadcast frequency bands
Broadcast frequency bands
VHF III
UHF IV and V
There are country specific variations of frequency usage for digital terrestrial television reception and other users such
as mobile broadband.
The tests in the present document only apply if the DTT broadcast receiver supports the wanted signal configuration
used by the test in question. The applicable tests are summarized in annex E, table E.1.
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.
Not applicable.
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] Nordig: "NorDig Unified Test Plan for Integrated Receiver Decoders v2.4".
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7 Draft ETSI EN 303 340 V1.2.0 (2020-06)
[i.2] British Broadcasting Corporation and Arqiva, WHP288: "WSD Coexistence Testing at the
Building Research Establishment: An Experimental Validation of Ofcom Regulatory Proposals".
[i.3] 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.4] ETSI EN 300 744 (V1.6.1): "Digital Video Broadcasting (DVB); Framing structure, channel
coding and modulation for digital terrestrial television".
[i.5] ETSI EN 302 755 (V1.3.1): "Digital Video Broadcasting (DVB); Frame structure channel coding
and modulation for a second generation digital terrestrial television broadcasting system
(DVB-T2)".
[i.6] Void.
[i.7] Void.
[i.8] Void.
[i.9] ECC Report 186 (2013): "Technical and operational requirements for the operation of white space
devices under geo-location approach".
[i.10] Recommendation ITU-R BT.1729 (2005): "Common 16:9 or 4:3 aspect ratio digital television
reference test pattern".
[i.11] 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.12] Recommendation ITU-R BT.419-3 (1990): "Directivity and polarization discrimination of
antennas in the reception of television broadcasting".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
Adjacent Channel Leakage power Ratio (ACLR): ratio of the on-channel transmit power to the power measured in
one of the adjacent channels with no active channel in the adjacent channel
NOTE: In the present document this definition also applies to an unwanted signal at a specified frequency offset
in a non-adjacent channel.
Adjacent Channel Selectivity (ACS): measure of the capability of the receiver to receive a wanted modulated signal
without exceeding a given degradation due to the presence of an unwanted signal which differs in frequency from the
wanted signal by an amount equal to the adjacent channel separation for which the equipment is intended
NOTE 1: In the present document adjacent channel selectivity is determined by the onset of picture degradation.
NOTE 2: The interference power I is equal to the licensed power of the interferer. This definition does not have the
same meaning as the term "Adjacent Channel Selectivity" (ACS) used in other organizations such as ITU,
CEPT, and in co-existence studies. The adjacent channel selectivity in the present document is equivalent
to the measured I/C ratio.
NOTE 3: In the present document this definition also applies to an unwanted signal at a specified frequency offset
in a non-adjacent channel.
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8 Draft ETSI EN 303 340 V1.2.0 (2020-06)
blocking or desensitization: measure of the capability of the receiver to receive a wanted modulated signal without
exceeding a given degradation due to the presence of an unwanted signal at any frequency other than those of the
spurious responses or of the adjacent channels
NOTE 1: In the present document receiver blocking is determined by the onset of picture degradation.
NOTE 2: The wanted signal level in the blocking tests of the present document is set at the specified receiver
sensitivity level plus 6 dB.
broadcast receiver: digital terrestrial television broadcast receiver comprising of at least a tuner and demodulator
broadcast receiver tuner port: DTT receiver tuner RF input connector
licensed power: highest rms power of the active portions of the signal measured over a specific time period
NOTE: In the case of interference power measurements, this is the reference power used for I/C calculations in
the present document. Typically for cases of LTE interference, this power is measured with a spectrum
analyser in zero span with a gated power measurement function and rms detector over a period equal to
an LTE symbol time. Alternatively it can be calculated by measuring the long term rms power and adding
the appropriate LAPR from table 5.
long term rms power: rms power of the signal measured over a period long enough to smooth out any fluctuations in
the signal power over time such as those due to transmission bursts
NOTE: This can be measured on an average power meter with an input filter time constant set high enough to
average out fluctuations in the measured signal power or alternatively using a spectrum analyser with
settings shown in table D.1.
onset of picture degradation: minimum time between successive errors in the displayed video is 15 seconds
radio equipment: product or relevant component thereof capable of communication by means of the emission and/or
reception of radio waves utilizing the spectrum allocated to terrestrial/space radio communication
NOTE: For the purposes of the present document the radio equipment is a digital terrestrial television broadcast
receiver comprising of at least a tuner and demodulator.
receiver overloading: interfering signal level expressed in dBm, above which the receiver begins to lose its ability to
discriminate against interfering signals at frequencies differing from that of the wanted signal due to the onset of strong
non-linear behaviour
NOTE 1: In the present document the overload level is determined by the onset of picture degradation.
NOTE 2: Above the overloading level the receiver will behave in a non-linear way, but does not necessarily fail
immediately depending on the receiver and interference characteristics.
sensitivity: maximum usable sensitivity is defined as the minimum receiver Radio Frequency (RF) input signal level or
field strength able to produce a specified analogue SINAD ratio or Bit Error Ratio (BER), or other specified output
performance which depends on this input signal level
NOTE: In the present document receiver sensitivity is determined by the onset of picture degradation.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
C Wanted signal
G Coupling Gain
C
I Interferer signal
I Licensed power
lic
I Long term rms power
rms
P Received UE interference power
RX_UE
P UE transmitted power
UE
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9 Draft ETSI EN 303 340 V1.2.0 (2020-06)
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
256-QAM 256-ary Quadrature Amplitude Modulation
64-QAM 64-ary Quadrature Amplitude Modulation
ACE Active Constellation Extension
ACLR Adjacent Channel Leakage power Ratio
ACS Adjacent Channel Selectivity
AGC Automatic Gain Control
AWGN Additive White Gaussian Noise
BER Bit Error Ratio
BS Base Station for mobile communications
CEPT European Conference of Postal and Telecommunications administrations
DTG UK Digital TV Group
DTT Digital Terrestrial Television
DVB-T Digital Video Broadcast Terrestrial - first generation
NOTE: See ETSI EN 300 744 [i.4].
DVB-T2 Digital Video Broadcast Terrestrial - second generation
NOTE: See ETSI EN 302 755 [i.5].
EFTA European Free Trade Association
FEC Forward Error Correction
FEF Future Extension Frame
FFT Fast Fourier Transform
HEM High Efficiency Mode
ISSY Input Stream SYnchronizer
LAPR Licensed to Average Power Ratio
NOTE: This is the ratio of the licensed power (described above) to the long term rms power (described above) of
the signal.
LDPC Low Density Parity Check (codes)
LTE Long Term Evolution
PAPR Peak to Average Power Ratio
PLP Physical Layer Pipe
QAM Quadrature Amplitude Modulation
RF Radio Frequency
SINAD (Signal + Noise + Distortion)/(Noise + Distortion) ratio
SISO Single Input Single Output
NOTE: Meaning one transmitting and one receiving antenna.
TFS Time-Frequency Slicing
UE User Equipment for mobile communications
NOTE: Example handsets, dongles, etc.
UHF Ultra High Frequency
VHF Very High Frequency
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10 Draft ETSI EN 303 340 V1.2.0 (2020-06)
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 declared operational
environmental profile.
NOTE: The applicability of the different tests as defined in annex E may vary depending upon the selected
country profile.
4.2 Conformance requirements
4.2.1 DVB-T and DVB-T2 configurations for testing
4.2.1.1 Modulation Parameters
Representative DVB-T and DVB-T2 configurations used for conformance specification and testing are shown in
tables 2 and 3. These are used in the Nordig specification test plan [i.1].
Table 2: DVB-T configuration
Parameter Value for "7 MHz" VHF tests Value for "8 MHz" UHF tests
Bandwidth 6,66 MHz 7,61 MHz
FFT size 8K 8K
Modulation 64-QAM 64-QAM
Hierarchy Non-Hierarchical Non-Hierarchical
Guard interval 1/4 1/4
Code rate 2/3 2/3
Channel Bandwidth 7 MHz 8 MHz
Table 3: DVB-T2 configuration
Parameter Value for "7 MHz" VHF tests Value for "8 MHz" UHF tests
Bandwidth 6,66 MHz 7,77 MHz
FFT 32K 32K
Carrier mode Normal Extended
SISO/MISO SISO SISO
Guard Interval 1/16 1/16
Version 1.2.1 1.2.1
Number of symbols/frame (Lf) 42 62
Pilot pattern PP4 PP4
TFS No No
FEF Not used Not used
Auxiliary streams Not used Not used
Subslices/T2 frame 1 1
Frames/Superframe 2 2
L1 post FEC type 16k LDPC (see note 1) 16k LDPC (see note 1)
L1 repetition 0 0
L1 post extension No No
L1 post modulation 64-QAM 64-QAM
L1 post scrambling None None
L1_ACE_MAX 0 (see note 2) 0 (see note 2)
L1 bias balancing cells No No
PAPR L1-ACE & TR (see note 3) L1-ACE & TR (see note 3)
PAPR: Vclip 3,1 V (see note 1) 3,1 V (see note 1)
PAPR: Number of iterations 10 (see note 1) 10 (see note 1)
TS bit rate (Mbit/s) 31,146 36,552
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11 Draft ETSI EN 303 340 V1.2.0 (2020-06)
Parameter Value for "7 MHz" VHF tests Value for "8 MHz" UHF tests
Input mode Mode A (single PLP mode) Mode A (single PLP mode)
Number of PLPs 1 1
PLP type Data type 1 Data type 1
Constellation rotation Yes Yes
PLP FEC type 64k LDPC 64k LDPC
FEC Frame length 64 800 (see note 4) 64 800 (see note 4)
Baseband Mode High Efficiency Mode (HEM) High Efficiency Mode (HEM)
ISSY None None
In band signalling Disabled Disabled
Null packet deletion Disabled Disabled
Time interleaver length 3 3
Frame interval 1 1
Time interleaver type 0 0
T2 frames/Interleaver frame 1 (see note 5) 1 (see note 5)
FEC Blocks/Interleaving Frame 132 200
Code rate 2/3 2/3
Modulation 256-QAM 256-QAM
NOTE 1: This parameter is preset on some modulators.
NOTE 2: This value disables L1 ACE operation.
NOTE 3: This parameter is referred to as "TR" on some modulators.
NOTE 4: This parameter is referred to as "Normal" on some modulators.
NOTE 5: Derived value shown for information only. Forced to 1 when time interleaver type = 0.
4.2.1.2 Receiver Configuration
Some DTT receiver products may include an optional internal preamplifier between the antenna connector and the
tuner. All tests in the present document shall be conducted with the optional preamplifier in the default shipping
condition (ON or OFF).
4.2.2 Interference and wanted test signals
Three LTE waveforms with 10 MHz bandwidth are used in the present document as interference sources for the
receiver conformance specification and tests. These waveforms are based on recordings from LTE BS and UE
equipment which have been converted into a suitable format for replay on laboratory vector signal generators. Two of
these waveforms have been selected because they are known to exercise the operation of DTT receiver Automatic Gain
Control (AGC) systems which is a key area for receiver performance optimization. In particular tests using the UE
waveform may require receiver optimization. These waveforms are contained in archive en_303340v010200a0.zip
which accompanies the present document. More waveform details are given in annex B.
The wanted DVB-T and DVB-T2 test signals shall carry a video stream containing moving images and an audio signal.
Recommendation ITU-R BT.1729 test signal [i.10] may be used.
4.2.3 Sensitivity
4.2.3.1 Definition
The maximum usable sensitivity is defined as the minimum receiver Radio Frequency (RF) input signal level or field
strength able to produce a specified analogue SINAD ratio or Bit Error Ratio (BER), or other specified output
performance which depends on this input signal level. In the present document receiver sensitivity is determined by the
onset of picture degradation.
4.2.3.2 Method of Measurement
4.2.3.2.1 Test arrangement description
The test arrangement is shown in figure 1.
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12 Draft ETSI EN 303 340 V1.2.0 (2020-06)
4.2.3.2.2 Test procedure
The steps of the test procedure are given below:
a) The wanted signal, provided by signal generator C, shall be set to the wanted signal frequency as shown in
table 4 and configured with the appropriate DTT mode parameters (tables 2 and 3).
b) Determine the attenuation of the cables, splitters, 50/75 ohm matching pad.
c) Set the level of the wanted signal C at the broadcast receiver tuner port to -50 dBm and note the value of the
"attenuator C" (= A ).
C1
d) Tune the DTT receiver to the wanted channel.
e) Increase the "attenuator C" sufficiently to cause complete picture failure.
f) Adjust "attenuator C" gradually until the onset of picture degradation occurs. Force the receiver under test to
re-acquire and re-adjust "attenuator C" until the onset of picture degradation occurs. Note the attenuator setting
(= A ).
C2
g) The receiver sensitivity shall be recorded in the measurement record (table C.1) as:
-50 - (A - A ) dBm (1)
C2 C1
h) Repeat steps a) to g) for the remaining frequencies in table 4.
Figure 1: Measurement arrangement for sensitivity tests
4.2.3.3 Limits
The sensitivity limits which shall be met are shown in table 4. The equipment shall be tested in its normal operating
mode.
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13 Draft ETSI EN 303 340 V1.2.0 (2020-06)
Table 4: Receiver sensitivity
Test Test C Required sensitivity limit for DTT
number description wanted signal configurations in tables 2 and 3
centre frequency (dBm)
(MHz) DVB-T DVB-T2
Sensitivity
1 198,5 -77 -75
VHF
Sensitivity
2 666 -77 -75
UHF
NOTE: For applicability of tests see annex E.
4.2.4 Adjacent channel selectivity
4.2.4.1 Definition
In the present document, adjacent channel selectivity (I/C) is defined as the measure of the capability of the receiver to
receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal
which differs in frequency from the wanted signal by an amount equal to the adjacent channel separation for which the
equipment is intended. In the present document adjacent channel selectivity is determined by the onset of picture
degradation.
NOTE 1: The interference power I is equal to the licensed power of the interferer. This definition does not have the
same meaning as the term "Adjacent Channel Selectivity" (ACS) used in other organizations such as ITU,
CEPT, and in co-existence studies. The adjacent channel selectivity in the present document is equivalent
to the measured I/C ratio.
NOTE 2: In the present document this definition also applies to an unwanted signal at a specified frequency offset
in a non-adjacent channel.
4.2.4.2 Method of Measurement
4.2.4.2.1 Test arrangement description
The basic measurement arrangement is shown in the top half of figure 2. Other arrangements may also be used - for
example a widely deployed test configuration shown at the bottom of figure 2 uses a single item of test equipment that
combines generator C and generator I. Some signal generators include precision RF attenuators which can be used in
place of "attenuator I" and "attenuator C". Some generators have an optimum output power level where the ACLR is at
a maximum and in these circumstances it may be preferable to use external attenuators to maintain the optimum ACLR
over the interference power level used for the test.
Additional information on the optional elements of the test arrangement, measurement techniques, recommended
instrument settings are given in annex D.
4.2.4.2.2 Requirements for the ACLR of the interfering signal
See annex F.
4.2.4.2.3 Test procedure
a) Two signal generators, I and C, shall be connected to the receiver via a combining network.
b) Determine the attenuation of the cables, combiner, splitter and 50/75 ohm matching pad.
c) The wanted signal, provided by signal generator C, shall be set to the wanted signal frequency C as shown in
table 5 and configured with the appropriate DTT mode parameters (tables 2 and 3). Turn this generator off (or
to at least 30 dBc below the interferer signal) maintaining output impedance.
d) The unwanted signal I, provided by signal generator I, shall be configured with the required interferer
waveform and interferer signal frequency as shown in table 5.
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14 Draft ETSI EN 303 340 V1.2.0 (2020-06)
e) The unwanted signal power at the broadcast receiver tuner port shall be set to the rms interferer power I in
rms
table 5. This power shall be verified with the power meter or spectrum analyser. Recommended instrument
settings are described in clause D.2.
f) Turn on signal generator C and adjust "attenuator C" so that the rms powers of the interferer I and wanted
signal C are equal. Note this attenuator setting (= AC1).
g) Tune the DTT receiver to the wanted channel.
h) Increase "attenuator C" in 1 dB steps or less until the onset of picture degradation occurs (see clause 3.1 for
definition). Force the receiver under test to re-acquire and re-adjust "attenuator C" until the onset of picture
).
degradation occurs. Note the attenuator setting (= AC2
i) The adjacent channel selectivity (I/C) shall be recorded in the measurement record (table C.2) as A -A +
C2 C1
LAPR dB, where LAPR is the licensed to average power ratio shown in table 5. Alternatively the measured
wanted signal power C shall be recorded in the measurement record (table C.2) as I - (A - A ) dBm.
rms C2 C1
j) Repeat steps b) to i) for the remaining tests in table 5.
Figure 2: Generic measurement arrangement for adjacent channel selectivity,
blocking and overloading tests
ETSI
15 Draft ETSI EN 303 340 V1.2.0 (2020-06)
4.2.4.3 Limits
The I/C limits which shall be met are shown in table 5. The equipment shall be tested in its normal operating mode.
Table 5: Adjacent channel selectivity requirements
Interferer (I) I C I Ilic Irms I Minimum required I/C Equivalent wanted
type interference test wanted signal interferer (licensed) (rms) LAPR limit (where I = I ) for level C for DTT
lic rms
Test
signal waveform centre centre (dBm) (dBm) (dB) DTT configurations in configurations in
name frequency frequency tables 2 and 3 tables 2 and 3
(MHz) (MHz) (dB) (dBm)
DVB-T DVB-T2 DVB-T
DVB-T2
1 10 MHz LTE
LTE_BS-
(see notes 1 800 BS light 786 796 -15 -23,3 8,3 35 36 -50 -51
idle_synth
and 2) load (near idle)
10 MHz LTE
2 LTE_BS- 763
700 BS light 690 -15 -23,3 8,3 43 43 -58 -58
(see note 2) idle_synth (see note 3)
load (near idle)
10 MHz LTE
3 Short_UE-Video-
700 UE Video- 690 708 -25 -42,7 17,7 33 38 -58 -63
(see note 2) Stream
Stream
N-1 UHF 8 MHz DVB-T 482 474 -30 -30 0 25 25 -55 -55
(see note 2)
N+1 UHF 8 MHz DVB-T 482 490 -30 -30 0 25 25 -55 -55
(see note 2)
NOTE 1: For broadcast receivers that do not receive DVB-T/T2 signals above 698 MHz, test 1 is not applicable.
NOTE 2: For applicability of tests see annex E.
NOTE 3: It is acceptable to use an alternative lower interference frequency such as 761 MHz. This may be necessary due to test equipment limitations.
ETSI
16 Draft ETSI EN 303 340 V1.2.0 (2020-06)
4.2.5 Blocking
4.2.5.1 Definition
The measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given
degradation due to the presence of an unwanted signal at any frequency other than those of the spurious responses or of
the adjacent channels. In the present document receiver blocking is determined by the onset of picture degradation.
NOTE: The wanted signal level in the blocking tests of the present document is fixed at the specified receiver
sensitivity level plus 6 dB.
4.2.5.2 Method of Measurement
4.2.5.2.1 Test arrangement description
See clause 4.2.4.2.1.
4.2.5.2.2 Requirements for the ACLR of the interfering signal
See annex F.
The interference signal I is a fully loaded LTE-BS signal with 10 MHz channel bandwidth.
4.2.5.2.3 Test procedure
a) Two signal generators, I and C, shall be connected to the receiver via a combining network.
b) Determine the attenuation of the cables, combiner, splitter and 50/75 ohm matching pad.
c) The wanted signal, provided by signal generator C, shall be set to the wanted signal frequency as shown in
table 6 and configured with the appropriate DTT mode parameters (tables 2 and 3).
d) The unwanted signal I, provided by signal generator I, shall be configured with the required interferer
waveform, interferer signal frequency as shown in table 6.
e) Adjust "attenuator C" to set the wanted level to -40 dBm at the broadcast receiver tuner port. This power shall
be verified with the power meter or spectrum analyser. Then reduce the wanted signal power to the value of
C in table 6 by increasing "attenuator C" by 31 dB for test 1 or by 29 dB for test 2.
rms
f) Adjust "attenuator I" to set the interferer level to -40 dBm at the broadcast receiver tuner port. This power shall
be verified with the power meter or spectrum analyser. Then reduce the interferer signal power to that of the
wanted signal (C in table 6) by increasing "attenuator I" by 31 dB for test 1 or by 29 dB for test 2. Note the
rms
value of "attenuator I" (= A ).
I1
g) Tune the DTT receiver to the wanted channel.
h) Reduce "attenuator I" until the onset of picture degradation occurs (see clause 3.1 for terms). Force the receiver
under test to re-acquire and re-adjust "attenuator I" until the onset of picture degradation occurs. Note the
attenuator setting (= A ).
I2
i) The blocking level shall be recorded in the measurement record (table C.3) as C + A - A dBm where C
rms I1 I2 rms
is the value given in table 6.
4.2.5.3 Limits
The blocking limits which shall be met are shown in table 6. The equipment shall be tested in its normal operating
mode.
ETSI
17 Draft ETSI EN 303 340 V1.2.0 (2020-06)
Table 6: Blocking requirements
Test Interferer (I) I C I Crms Required blocking
type interference
...
HARMONISED EUROPEAN STANDARD
Digital Terrestrial TV Broadcast Receivers;
Harmonised Standard for access to radio spectrum
2 ETSI EN 303 340 V1.2.1 (2020-09)
Reference
REN/ERM-TG17-32
Keywords
broadcast, digital, harmonised standard, radio,
receiver
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ETSI
3 ETSI EN 303 340 V1.2.1 (2020-09)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 DVB-T and DVB-T2 configurations for testing . 11
4.2.1.1 Modulation Parameters . 11
4.2.1.2 Receiver Configuration . 12
4.2.2 Interference and wanted test signals . 12
4.2.3 Sensitivity . 12
4.2.3.1 Definition . 12
4.2.3.2 Method of Measurement . 12
4.2.3.2.1 Test arrangement description . 12
4.2.3.2.2 Test procedure . 13
4.2.3.3 Limits . 13
4.2.4 Adjacent channel selectivity . 14
4.2.4.1 Definition . 14
4.2.4.2 Method of Measurement . 14
4.2.4.2.1 Test arrangement description . 14
4.2.4.2.2 Requirements for the ACLR of the interfering signal . 14
4.2.4.2.3 Test procedure . 14
4.2.4.3 Limits . 16
4.2.5 Blocking . 17
4.2.5.1 Definition . 17
4.2.5.2 Method of Measurement . 17
4.2.5.2.1 Test arrangement description . 17
4.2.5.2.2 Requirements for the ACLR of the interfering signal . 17
4.2.5.2.3 Test procedure . 17
4.2.5.3 Limits . 17
4.2.6 Overloading . 18
4.2.6.1 Definition . 18
4.2.6.2 Method of Measurement . 18
4.2.6.2.1 Test arrangement description . 18
4.2.6.2.2 Requirements for the ACLR of the interfering signal . 18
4.2.6.2.3 Test procedure . 18
4.2.6.3 Limits . 19
5 Testing for compliance with technical requirements . 19
5.1 Environmental conditions for testing . 19
5.2 Void . 19
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 20
Annex B (informative): Summary of study work . 21
ETSI
4 ETSI EN 303 340 V1.2.1 (2020-09)
B.1 Overview . 21
B.2 Selection of interferer waveforms . 21
B.2.1 UE waveform . 21
B.2.2 BS waveforms . 22
B.3 Reception conditions for LTE UE 700 MHz interference . 24
B.3.1 Calculation of maximum coupling gain . 24
B.3.2 Calculation of maximum received UE interference power . 25
B.4 Choice of BS interference power in receiver tests . 25
Annex C (informative): Measurement records . 26
Annex D (informative): Additional information to assist measurements . 28
D.1 Optional elements of the test arrangement . 28
D.2 Instrument settings for measuring the power of bursty interference signals . 28
D.3 Improving ACLR . 28
D.4 Measuring ACLR . 29
Annex E (normative): Applicable tests . 30
E.1 Applicable tests for different receiver variants . 30
Annex F (normative): Requirements for the interfering signal minimum ACLR . 32
Annex G (informative): Justification of omitted receiver parameters . 33
G.1 Receiver parameters omitted . 33
G.1.1 Co-channel rejection. 33
G.1.2 Spurious response rejection . 33
G.1.3 Intermodulation . 33
G.1.3.0 General . 33
G.1.3.1 Second order intermodulation . 34
G.1.3.2 Third order intermodulation . 34
G.1.4 Dynamic range . 34
G.1.5 Reciprocal mixing . 34
G.1.6 Desensitisation . 35
Annex H (informative): Change History . 36
History . 37
ETSI
5 ETSI EN 303 340 V1.2.1 (2020-09)
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.11] 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.3].
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.
The present document has a number of interference test data files that are contained in archive
en_303340v010201p0.zip which accompanies the present document.
National transposition dates
Date of adoption of this EN: 23 September 2020
Date of latest announcement of this EN (doa): 31 December 2020
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2021
Date of withdrawal of any conflicting National Standard (dow): 30 June 2022
ETSI
6 ETSI EN 303 340 V1.2.1 (2020-09)
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 303 340 V1.2.1 (2020-09)
1 Scope
The present document specifies technical characteristics and methods of measurements for digital terrestrial television
broadcast receivers fitted with an external antenna input (tuner port) capable of receiving DVB-T and/or DVB-T2
signals.
Receivers without external antenna connectors, receivers with diversity, and receivers intended for mobile or
automotive reception are not covered by the present document.
NOTE: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.3] is given in annex A.
The present document includes considerations of interference from LTE transmissions in the 700 MHz and 800 MHz
bands and DTT transmissions in UHF band IV. The requirements of the installation system (antenna, feeder cable,
amplifiers, etc.) are not addressed.
Table 1: Broadcast frequency bands
Broadcast frequency bands
VHF III
UHF IV and V
There are country specific variations of frequency usage for digital terrestrial television reception and other users such
as mobile broadband.
The tests in the present document only apply if the DTT broadcast receiver supports the wanted signal configuration
used by the test in question. The applicable tests are summarized in annex E, table E.1.
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.
Not applicable.
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] Nordig: "NorDig Unified Test Plan for Integrated Receiver Decoders v2.4".
ETSI
8 ETSI EN 303 340 V1.2.1 (2020-09)
[i.2] British Broadcasting Corporation and Arqiva, WHP288: "WSD Coexistence Testing at the
Building Research Establishment: An Experimental Validation of Ofcom Regulatory Proposals".
[i.3] 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.4] ETSI EN 300 744 (V1.6.1): "Digital Video Broadcasting (DVB); Framing structure, channel
coding and modulation for digital terrestrial television".
[i.5] ETSI EN 302 755 (V1.3.1): "Digital Video Broadcasting (DVB); Frame structure channel coding
and modulation for a second generation digital terrestrial television broadcasting system
(DVB-T2)".
[i.6] Void.
[i.7] Void.
[i.8] Void.
[i.9] ECC Report 186 (2013): "Technical and operational requirements for the operation of white space
devices under geo-location approach".
[i.10] Recommendation ITU-R BT.1729 (2005): "Common 16:9 or 4:3 aspect ratio digital television
reference test pattern".
[i.11] 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.12] Recommendation ITU-R BT.419-3 (1990): "Directivity and polarization discrimination of
antennas in the reception of television broadcasting".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
Adjacent Channel Leakage power Ratio (ACLR): ratio of the on-channel transmit power to the power measured in
one of the adjacent channels with no active channel in the adjacent channel
NOTE: In the present document this definition also applies to an unwanted signal at a specified frequency offset
in a non-adjacent channel.
Adjacent Channel Selectivity (ACS): measure of the capability of the receiver to receive a wanted modulated signal
without exceeding a given degradation due to the presence of an unwanted signal which differs in frequency from the
wanted signal by an amount equal to the adjacent channel separation for which the equipment is intended
NOTE 1: In the present document adjacent channel selectivity is determined by the onset of picture degradation.
NOTE 2: The interference power I is equal to the licensed power of the interferer. This definition does not have the
same meaning as the term "Adjacent Channel Selectivity" (ACS) used in other organizations such as ITU,
CEPT, and in co-existence studies. The adjacent channel selectivity in the present document is equivalent
to the measured I/C ratio.
NOTE 3: In the present document this definition also applies to an unwanted signal at a specified frequency offset
in a non-adjacent channel.
ETSI
9 ETSI EN 303 340 V1.2.1 (2020-09)
blocking or desensitization: measure of the capability of the receiver to receive a wanted modulated signal without
exceeding a given degradation due to the presence of an unwanted signal at any frequency other than those of the
spurious responses or of the adjacent channels
NOTE 1: In the present document receiver blocking is determined by the onset of picture degradation.
NOTE 2: The wanted signal level in the blocking tests of the present document is set at the specified receiver
sensitivity level plus 6 dB.
broadcast receiver: digital terrestrial television broadcast receiver comprising of at least a tuner and demodulator
broadcast receiver tuner port: DTT receiver tuner RF input connector
licensed power: highest rms power of the active portions of the signal measured over a specific time period
NOTE: In the case of interference power measurements, this is the reference power used for I/C calculations in
the present document. Typically for cases of LTE interference, this power is measured with a spectrum
analyser in zero span with a gated power measurement function and rms detector over a period equal to
an LTE symbol time. Alternatively it can be calculated by measuring the long term rms power and adding
the appropriate LAPR from table 5.
long term rms power: rms power of the signal measured over a period long enough to smooth out any fluctuations in
the signal power over time such as those due to transmission bursts
NOTE: This can be measured on an average power meter with an input filter time constant set high enough to
average out fluctuations in the measured signal power or alternatively using a spectrum analyser with
settings shown in table D.1.
onset of picture degradation: minimum time between successive errors in the displayed video is 15 seconds
radio equipment: product or relevant component thereof capable of communication by means of the emission and/or
reception of radio waves utilizing the spectrum allocated to terrestrial/space radio communication
NOTE: For the purposes of the present document the radio equipment is a digital terrestrial television broadcast
receiver comprising of at least a tuner and demodulator.
receiver overloading: interfering signal level expressed in dBm, above which the receiver begins to lose its ability to
discriminate against interfering signals at frequencies differing from that of the wanted signal due to the onset of strong
non-linear behaviour
NOTE 1: In the present document the overload level is determined by the onset of picture degradation.
NOTE 2: Above the overloading level the receiver will behave in a non-linear way, but does not necessarily fail
immediately depending on the receiver and interference characteristics.
sensitivity: maximum usable sensitivity is defined as the minimum receiver Radio Frequency (RF) input signal level or
field strength able to produce a specified analogue SINAD ratio or Bit Error Ratio (BER), or other specified output
performance which depends on this input signal level
NOTE: In the present document receiver sensitivity is determined by the onset of picture degradation.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
C Wanted signal
G Coupling Gain
C
I Interferer signal
I Licensed power
lic
I Long term rms power
rms
P Received UE interference power
RX_UE
P UE transmitted power
UE
ETSI
10 ETSI EN 303 340 V1.2.1 (2020-09)
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
256-QAM 256-ary Quadrature Amplitude Modulation
64-QAM 64-ary Quadrature Amplitude Modulation
ACE Active Constellation Extension
ACLR Adjacent Channel Leakage power Ratio
ACS Adjacent Channel Selectivity
AGC Automatic Gain Control
AWGN Additive White Gaussian Noise
BER Bit Error Ratio
BS Base Station for mobile communications
CEPT European Conference of Postal and Telecommunications administrations
DTG UK Digital TV Group
DTT Digital Terrestrial Television
DVB-T Digital Video Broadcast Terrestrial - first generation
NOTE: See ETSI EN 300 744 [i.4].
DVB-T2 Digital Video Broadcast Terrestrial - second generation
NOTE: See ETSI EN 302 755 [i.5].
EFTA European Free Trade Association
FEC Forward Error Correction
FEF Future Extension Frame
FFT Fast Fourier Transform
HEM High Efficiency Mode
ISSY Input Stream SYnchronizer
LAPR Licensed to Average Power Ratio
NOTE: This is the ratio of the licensed power (described above) to the long term rms power (described above) of
the signal.
LDPC Low Density Parity Check (codes)
LTE Long Term Evolution
PAPR Peak to Average Power Ratio
PLP Physical Layer Pipe
QAM Quadrature Amplitude Modulation
RF Radio Frequency
SINAD (Signal + Noise + Distortion)/(Noise + Distortion) ratio
SISO Single Input Single Output
NOTE: Meaning one transmitting and one receiving antenna.
TFS Time-Frequency Slicing
UE User Equipment for mobile communications
NOTE: Example handsets, dongles, etc.
UHF Ultra High Frequency
VHF Very High Frequency
ETSI
11 ETSI EN 303 340 V1.2.1 (2020-09)
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 declared operational
environmental profile.
NOTE: The applicability of the different tests as defined in annex E may vary depending upon the selected
country profile.
4.2 Conformance requirements
4.2.1 DVB-T and DVB-T2 configurations for testing
4.2.1.1 Modulation Parameters
Representative DVB-T and DVB-T2 configurations used for conformance specification and testing are shown in
tables 2 and 3. These are used in the Nordig specification test plan [i.1].
Table 2: DVB-T configuration
Parameter Value for "7 MHz" VHF tests Value for "8 MHz" UHF tests
Bandwidth 6,66 MHz 7,61 MHz
FFT size 8K 8K
Modulation 64-QAM 64-QAM
Hierarchy Non-Hierarchical Non-Hierarchical
Guard interval 1/4 1/4
Code rate 2/3 2/3
Channel Bandwidth 7 MHz 8 MHz
Table 3: DVB-T2 configuration
Parameter Value for "7 MHz" VHF tests Value for "8 MHz" UHF tests
Bandwidth 6,66 MHz 7,77 MHz
FFT 32K 32K
Carrier mode Normal Extended
SISO/MISO SISO SISO
Guard Interval 1/16 1/16
Version 1.2.1 1.2.1
Number of symbols/frame (Lf) 42 62
Pilot pattern PP4 PP4
TFS No No
FEF Not used Not used
Auxiliary streams Not used Not used
Subslices/T2 frame 1 1
Frames/Superframe 2 2
L1 post FEC type 16k LDPC (see note 1) 16k LDPC (see note 1)
L1 repetition 0 0
L1 post extension No No
L1 post modulation 64-QAM 64-QAM
L1 post scrambling None None
L1_ACE_MAX 0 (see note 2) 0 (see note 2)
L1 bias balancing cells No No
PAPR L1-ACE & TR (see note 3) L1-ACE & TR (see note 3)
PAPR: Vclip 3,1 V (see note 1) 3,1 V (see note 1)
PAPR: Number of iterations 10 (see note 1) 10 (see note 1)
TS bit rate (Mbit/s) 31,146 36,552
ETSI
12 ETSI EN 303 340 V1.2.1 (2020-09)
Parameter Value for "7 MHz" VHF tests Value for "8 MHz" UHF tests
Input mode Mode A (single PLP mode) Mode A (single PLP mode)
Number of PLPs 1 1
PLP type Data type 1 Data type 1
Constellation rotation Yes Yes
PLP FEC type 64k LDPC 64k LDPC
FEC Frame length 64 800 (see note 4) 64 800 (see note 4)
Baseband Mode High Efficiency Mode (HEM) High Efficiency Mode (HEM)
ISSY None None
In band signalling Disabled Disabled
Null packet deletion Disabled Disabled
Time interleaver length 3 3
Frame interval 1 1
Time interleaver type 0 0
T2 frames/Interleaver frame 1 (see note 5) 1 (see note 5)
FEC Blocks/Interleaving Frame 132 200
Code rate 2/3 2/3
Modulation 256-QAM 256-QAM
NOTE 1: This parameter is preset on some modulators.
NOTE 2: This value disables L1 ACE operation.
NOTE 3: This parameter is referred to as "TR" on some modulators.
NOTE 4: This parameter is referred to as "Normal" on some modulators.
NOTE 5: Derived value shown for information only. Forced to 1 when time interleaver type = 0.
4.2.1.2 Receiver Configuration
Some DTT receiver products may include an optional internal preamplifier between the antenna connector and the
tuner. All tests in the present document shall be conducted with the optional preamplifier in the default shipping
condition (ON or OFF).
4.2.2 Interference and wanted test signals
Three LTE waveforms with 10 MHz bandwidth are used in the present document as interference sources for the
receiver conformance specification and tests. These waveforms are based on recordings from LTE BS and UE
equipment which have been converted into a suitable format for replay on laboratory vector signal generators. Two of
these waveforms have been selected because they are known to exercise the operation of DTT receiver Automatic Gain
Control (AGC) systems which is a key area for receiver performance optimization. In particular tests using the UE
waveform may require receiver optimization. These waveforms are contained in archive en_303340v010201p0.zip
which accompanies the present document. More waveform details are given in annex B.
The wanted DVB-T and DVB-T2 test signals shall carry a video stream containing moving images and an audio signal.
Recommendation ITU-R BT.1729 test signal [i.10] may be used.
4.2.3 Sensitivity
4.2.3.1 Definition
The maximum usable sensitivity is defined as the minimum receiver Radio Frequency (RF) input signal level or field
strength able to produce a specified analogue SINAD ratio or Bit Error Ratio (BER), or other specified output
performance which depends on this input signal level. In the present document receiver sensitivity is determined by the
onset of picture degradation.
4.2.3.2 Method of Measurement
4.2.3.2.1 Test arrangement description
The test arrangement is shown in figure 1.
ETSI
13 ETSI EN 303 340 V1.2.1 (2020-09)
4.2.3.2.2 Test procedure
The steps of the test procedure are given below:
a) The wanted signal, provided by signal generator C, shall be set to the wanted signal frequency as shown in
table 4 and configured with the appropriate DTT mode parameters (tables 2 and 3).
b) Determine the attenuation of the cables, splitters, 50/75 ohm matching pad.
c) Set the level of the wanted signal C at the broadcast receiver tuner port to -50 dBm and note the value of the
"attenuator C" (= A ).
C1
d) Tune the DTT receiver to the wanted channel.
e) Increase the "attenuator C" sufficiently to cause complete picture failure.
f) Adjust "attenuator C" gradually until the onset of picture degradation occurs. Force the receiver under test to
re-acquire and re-adjust "attenuator C" until the onset of picture degradation occurs. Note the attenuator setting
(= A ).
C2
g) The receiver sensitivity shall be recorded in the measurement record (table C.1) as:
-50 - (A - A ) dBm (1)
C2 C1
h) Repeat steps a) to g) for the remaining frequencies in table 4.
Figure 1: Measurement arrangement for sensitivity tests
4.2.3.3 Limits
The sensitivity limits which shall be met are shown in table 4. The equipment shall be tested in its normal operating
mode.
ETSI
14 ETSI EN 303 340 V1.2.1 (2020-09)
Table 4: Receiver sensitivity
Test Test C Required sensitivity limit for DTT
number description wanted signal configurations in tables 2 and 3
(dBm)
centre frequency
(MHz) DVB-T DVB-T2
Sensitivity
1 198,5 -77 -75
VHF
Sensitivity
2 666 -77 -75
UHF
NOTE: For applicability of tests see annex E.
4.2.4 Adjacent channel selectivity
4.2.4.1 Definition
In the present document, adjacent channel selectivity (I/C) is defined as the measure of the capability of the receiver to
receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal
which differs in frequency from the wanted signal by an amount equal to the adjacent channel separation for which the
equipment is intended. In the present document adjacent channel selectivity is determined by the onset of picture
degradation.
NOTE 1: The interference power I is equal to the licensed power of the interferer. This definition does not have the
same meaning as the term "Adjacent Channel Selectivity" (ACS) used in other organizations such as ITU,
CEPT, and in co-existence studies. The adjacent channel selectivity in the present document is equivalent
to the measured I/C ratio.
NOTE 2: In the present document this definition also applies to an unwanted signal at a specified frequency offset
in a non-adjacent channel.
4.2.4.2 Method of Measurement
4.2.4.2.1 Test arrangement description
The basic measurement arrangement is shown in the top half of figure 2. Other arrangements may also be used - for
example a widely deployed test configuration shown at the bottom of figure 2 uses a single item of test equipment that
combines generator C and generator I. Some signal generators include precision RF attenuators which can be used in
place of "attenuator I" and "attenuator C". Some generators have an optimum output power level where the ACLR is at
a maximum and in these circumstances it may be preferable to use external attenuators to maintain the optimum ACLR
over the interference power level used for the test.
Additional information on the optional elements of the test arrangement, measurement techniques, recommended
instrument settings are given in annex D.
4.2.4.2.2 Requirements for the ACLR of the interfering signal
See annex F.
4.2.4.2.3 Test procedure
a) Two signal generators, I and C, shall be connected to the receiver via a combining network.
b) Determine the attenuation of the cables, combiner, splitter and 50/75 ohm matching pad.
c) The wanted signal, provided by signal generator C, shall be set to the wanted signal frequency C as shown in
table 5 and configured with the appropriate DTT mode parameters (tables 2 and 3). Turn this generator off (or
to at least 30 dBc below the interferer signal) maintaining output impedance.
d) The unwanted signal I, provided by signal generator I, shall be configured with the required interferer
waveform and interferer signal frequency as shown in table 5.
ETSI
15 ETSI EN 303 340 V1.2.1 (2020-09)
e) The unwanted signal power at the broadcast receiver tuner port shall be set to the rms interferer power I in
rms
table 5. This power shall be verified with the power meter or spectrum analyser. Recommended instrument
settings are described in clause D.2.
f) Turn on signal generator C and adjust "attenuator C" so that the rms powers of the interferer I and wanted
signal C are equal. Note this attenuator setting (= A ).
C1
g) Tune the DTT receiver to the wanted channel.
h) Increase "attenuator C" in 1 dB steps or less until the onset of picture degradation occurs (see clause 3.1 for
definition). Force the receiver under test to re-acquire and re-adjust "attenuator C" until the onset of picture
degradation occurs. Note the attenuator setting (= A ).
C2
i) The adjacent channel selectivity (I/C) shall be recorded in the measurement record (table C.2) as A -A +
C2 C1
LAPR dB, where LAPR is the licensed to average power ratio shown in table 5. Alternatively the measured
wanted signal power C shall be recorded in the measurement record (table C.2) as I - (A - A ) dBm.
rms C2 C1
j) Repeat steps b) to i) for the remaining tests in table 5.
Figure 2: Generic measurement arrangement for adjacent channel selectivity,
blocking and overloading tests
ETSI
16 ETSI EN 303 340 V1.2.1 (2020-09)
4.2.4.3 Limits
The I/C limits which shall be met are shown in table 5. The equipment shall be tested in its normal operating mode.
Table 5: Adjacent channel selectivity requirements
Interferer (I) I C I Ilic Irms I Minimum required I/C Equivalent wanted
type interference test wanted signal interferer (licensed) (rms) LAPR limit (where I = I ) for level C for DTT
lic rms
Test
signal waveform centre centre (dBm) (dBm) (dB) DTT configurations in configurations in
name frequency frequency tables 2 and 3 tables 2 and 3
(MHz) (MHz) (dB) (dBm)
DVB-T DVB-T2 DVB-T
DVB-T2
1 10 MHz LTE
LTE_BS-
(see notes 1 800 BS light 786 796 -15 -23,3 8,3 35 36 -50 -51
idle_synth
and 2) load (near idle)
10 MHz LTE
2 LTE_BS- 763
700 BS light 690 -15 -23,3 8,3 43 43 -58 -58
(see note 2) idle_synth (see note 3)
load (near idle)
10 MHz LTE
3 Short_UE-Video-
700 UE Video- 690 708 -25 -42,7 17,7 33 38 -58 -63
(see note 2) Stream
Stream
N-1 UHF 8 MHz DVB-T 482 474 -30 -30 0 25 25 -55 -55
(see note 2)
N+1 UHF 8 MHz DVB-T 482 490 -30 -30 0 25 25 -55 -55
(see note 2)
NOTE 1: For broadcast receivers that do not receive DVB-T/T2 signals above 698 MHz, test 1 is not applicable.
NOTE 2: For applicability of tests see annex E.
NOTE 3: It is acceptable to use an alternative lower interference frequency such as 761 MHz. This may be necessary due to test equipment limitations.
ETSI
17 ETSI EN 303 340 V1.2.1 (2020-09)
4.2.5 Blocking
4.2.5.1 Definition
The measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given
degradation due to the presence of an unwanted signal at any frequency other than those of the spurious responses or of
the adjacent channels. In the present document receiver blocking is determined by the onset of picture degradation.
NOTE: The wanted signal level in the blocking tests of the present document is fixed at the specified receiver
sensitivity level plus 6 dB.
4.2.5.2 Method of Measurement
4.2.5.2.1 Test arrangement description
See clause 4.2.4.2.1.
4.2.5.2.2 Requirements for the ACLR of the interfering signal
See annex F.
The interference signal I is a fully loaded LTE-BS signal with 10 MHz channel bandwidth.
4.2.5.2.3 Test procedure
a) Two signal generators, I and C, shall be connected to the receiver via a combining network.
b) Determine the attenuation of the cables, combiner, splitter and 50/75 ohm matching pad.
c) The wanted signal, provided by signal generator C, shall be set to the wanted signal frequency as shown in
table 6 and configured with the appropriate DTT mode parameters (tables 2 and 3).
d) The unwanted signal I, provided by signal generator I, shall be configured with the required interferer
waveform, interferer signal frequency as shown in table 6.
e) Adjust "attenuator C" to set the wanted level to -40 dBm at the broadcast receiver tuner port. This power shall
be verified with the power meter or spectrum analyser. Then reduce the wanted signal power to the value of
C in table 6 by increasing "attenuator C" by 31 dB for test 1 or by 29 dB for test 2.
rms
f) Adjust "attenuator I" to set the interferer level to -40 dBm at the broadcast receiver tuner port. This power shall
be verified with the power meter or spectrum analyser. Then reduce the interferer signal power to that of the
wanted signal (C in table 6) by increasing "attenuator I" by 31 dB for test 1 or by 29 dB for test 2. Note the
rms
value of "attenuator I" (= A ).
I1
g) Tune the DTT receiver to the wanted channel.
h) Reduce "attenuator I" until the onset of picture degradation occurs (see clause 3.1 for terms). Force the receiver
under test to re-acquire and re-adjust "attenuator I" until the onset of picture degradation occurs. Note the
attenuator setting (= A ).
I2
i) The blocking level shall be recorded in the measurement record (table C.3) as C + A - A dBm where C
rms I1 I2 rms
is the value given in table 6.
4.2.5.3 Limits
The blocking limits which shall be met are shown in table 6. The equipment shall be tested in its normal operating
mode.
ETSI
18 ETSI EN 303 340 V1.2.1 (2020-09)
Table 6: Blocking requirements
Test Interferer (I) I C I C Required blocking
rms
for DTT
type interference wanted signal centre (rms) level Irms
test signal centre frequency (dBm) configurations in
...
SLOVENSKI STANDARD
01-december-2020
TV sprejemniki digitalne prizemne radiodifuzije - Harmonizirani standard za dostop
do radijskega spektra
Digital Terrestrial TV Broadcast Receivers - Harmonised Standard for access to radio
spectrum
Ta slovenski standard je istoveten z: ETSI EN 303 340 V1.2.1 (2020-09)
ICS:
33.160.25 Televizijski sprejemniki Television receivers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
HARMONISED EUROPEAN STANDARD
Digital Terrestrial TV Broadcast Receivers;
Harmonised Standard for access to radio spectrum
2 ETSI EN 303 340 V1.2.1 (2020-09)
Reference
REN/ERM-TG17-32
Keywords
broadcast, digital, harmonised standard, radio,
receiver
ETSI
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ETSI
3 ETSI EN 303 340 V1.2.1 (2020-09)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 DVB-T and DVB-T2 configurations for testing . 11
4.2.1.1 Modulation Parameters . 11
4.2.1.2 Receiver Configuration . 12
4.2.2 Interference and wanted test signals . 12
4.2.3 Sensitivity . 12
4.2.3.1 Definition . 12
4.2.3.2 Method of Measurement . 12
4.2.3.2.1 Test arrangement description . 12
4.2.3.2.2 Test procedure . 13
4.2.3.3 Limits . 13
4.2.4 Adjacent channel selectivity . 14
4.2.4.1 Definition . 14
4.2.4.2 Method of Measurement . 14
4.2.4.2.1 Test arrangement description . 14
4.2.4.2.2 Requirements for the ACLR of the interfering signal . 14
4.2.4.2.3 Test procedure . 14
4.2.4.3 Limits . 16
4.2.5 Blocking . 17
4.2.5.1 Definition . 17
4.2.5.2 Method of Measurement . 17
4.2.5.2.1 Test arrangement description . 17
4.2.5.2.2 Requirements for the ACLR of the interfering signal . 17
4.2.5.2.3 Test procedure . 17
4.2.5.3 Limits . 17
4.2.6 Overloading . 18
4.2.6.1 Definition . 18
4.2.6.2 Method of Measurement . 18
4.2.6.2.1 Test arrangement description . 18
4.2.6.2.2 Requirements for the ACLR of the interfering signal . 18
4.2.6.2.3 Test procedure . 18
4.2.6.3 Limits . 19
5 Testing for compliance with technical requirements . 19
5.1 Environmental conditions for testing . 19
5.2 Void . 19
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 20
Annex B (informative): Summary of study work . 21
ETSI
4 ETSI EN 303 340 V1.2.1 (2020-09)
B.1 Overview . 21
B.2 Selection of interferer waveforms . 21
B.2.1 UE waveform . 21
B.2.2 BS waveforms . 22
B.3 Reception conditions for LTE UE 700 MHz interference . 24
B.3.1 Calculation of maximum coupling gain . 24
B.3.2 Calculation of maximum received UE interference power . 25
B.4 Choice of BS interference power in receiver tests . 25
Annex C (informative): Measurement records . 26
Annex D (informative): Additional information to assist measurements . 28
D.1 Optional elements of the test arrangement . 28
D.2 Instrument settings for measuring the power of bursty interference signals . 28
D.3 Improving ACLR . 28
D.4 Measuring ACLR . 29
Annex E (normative): Applicable tests . 30
E.1 Applicable tests for different receiver variants . 30
Annex F (normative): Requirements for the interfering signal minimum ACLR . 32
Annex G (informative): Justification of omitted receiver parameters . 33
G.1 Receiver parameters omitted . 33
G.1.1 Co-channel rejection. 33
G.1.2 Spurious response rejection . 33
G.1.3 Intermodulation . 33
G.1.3.0 General . 33
G.1.3.1 Second order intermodulation . 34
G.1.3.2 Third order intermodulation . 34
G.1.4 Dynamic range . 34
G.1.5 Reciprocal mixing . 34
G.1.6 Desensitisation . 35
Annex H (informative): Change History . 36
History . 37
ETSI
5 ETSI EN 303 340 V1.2.1 (2020-09)
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.11] 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.3].
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.
The present document has a number of interference test data files that are contained in archive
en_303340v010201p0.zip which accompanies the present document.
National transposition dates
Date of adoption of this EN: 23 September 2020
Date of latest announcement of this EN (doa): 31 December 2020
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2021
Date of withdrawal of any conflicting National Standard (dow): 30 June 2022
ETSI
6 ETSI EN 303 340 V1.2.1 (2020-09)
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 303 340 V1.2.1 (2020-09)
1 Scope
The present document specifies technical characteristics and methods of measurements for digital terrestrial television
broadcast receivers fitted with an external antenna input (tuner port) capable of receiving DVB-T and/or DVB-T2
signals.
Receivers without external antenna connectors, receivers with diversity, and receivers intended for mobile or
automotive reception are not covered by the present document.
NOTE: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.3] is given in annex A.
The present document includes considerations of interference from LTE transmissions in the 700 MHz and 800 MHz
bands and DTT transmissions in UHF band IV. The requirements of the installation system (antenna, feeder cable,
amplifiers, etc.) are not addressed.
Table 1: Broadcast frequency bands
Broadcast frequency bands
VHF III
UHF IV and V
There are country specific variations of frequency usage for digital terrestrial television reception and other users such
as mobile broadband.
The tests in the present document only apply if the DTT broadcast receiver supports the wanted signal configuration
used by the test in question. The applicable tests are summarized in annex E, table E.1.
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.
Not applicable.
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] Nordig: "NorDig Unified Test Plan for Integrated Receiver Decoders v2.4".
ETSI
8 ETSI EN 303 340 V1.2.1 (2020-09)
[i.2] British Broadcasting Corporation and Arqiva, WHP288: "WSD Coexistence Testing at the
Building Research Establishment: An Experimental Validation of Ofcom Regulatory Proposals".
[i.3] 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.4] ETSI EN 300 744 (V1.6.1): "Digital Video Broadcasting (DVB); Framing structure, channel
coding and modulation for digital terrestrial television".
[i.5] ETSI EN 302 755 (V1.3.1): "Digital Video Broadcasting (DVB); Frame structure channel coding
and modulation for a second generation digital terrestrial television broadcasting system
(DVB-T2)".
[i.6] Void.
[i.7] Void.
[i.8] Void.
[i.9] ECC Report 186 (2013): "Technical and operational requirements for the operation of white space
devices under geo-location approach".
[i.10] Recommendation ITU-R BT.1729 (2005): "Common 16:9 or 4:3 aspect ratio digital television
reference test pattern".
[i.11] 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.12] Recommendation ITU-R BT.419-3 (1990): "Directivity and polarization discrimination of
antennas in the reception of television broadcasting".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
Adjacent Channel Leakage power Ratio (ACLR): ratio of the on-channel transmit power to the power measured in
one of the adjacent channels with no active channel in the adjacent channel
NOTE: In the present document this definition also applies to an unwanted signal at a specified frequency offset
in a non-adjacent channel.
Adjacent Channel Selectivity (ACS): measure of the capability of the receiver to receive a wanted modulated signal
without exceeding a given degradation due to the presence of an unwanted signal which differs in frequency from the
wanted signal by an amount equal to the adjacent channel separation for which the equipment is intended
NOTE 1: In the present document adjacent channel selectivity is determined by the onset of picture degradation.
NOTE 2: The interference power I is equal to the licensed power of the interferer. This definition does not have the
same meaning as the term "Adjacent Channel Selectivity" (ACS) used in other organizations such as ITU,
CEPT, and in co-existence studies. The adjacent channel selectivity in the present document is equivalent
to the measured I/C ratio.
NOTE 3: In the present document this definition also applies to an unwanted signal at a specified frequency offset
in a non-adjacent channel.
ETSI
9 ETSI EN 303 340 V1.2.1 (2020-09)
blocking or desensitization: measure of the capability of the receiver to receive a wanted modulated signal without
exceeding a given degradation due to the presence of an unwanted signal at any frequency other than those of the
spurious responses or of the adjacent channels
NOTE 1: In the present document receiver blocking is determined by the onset of picture degradation.
NOTE 2: The wanted signal level in the blocking tests of the present document is set at the specified receiver
sensitivity level plus 6 dB.
broadcast receiver: digital terrestrial television broadcast receiver comprising of at least a tuner and demodulator
broadcast receiver tuner port: DTT receiver tuner RF input connector
licensed power: highest rms power of the active portions of the signal measured over a specific time period
NOTE: In the case of interference power measurements, this is the reference power used for I/C calculations in
the present document. Typically for cases of LTE interference, this power is measured with a spectrum
analyser in zero span with a gated power measurement function and rms detector over a period equal to
an LTE symbol time. Alternatively it can be calculated by measuring the long term rms power and adding
the appropriate LAPR from table 5.
long term rms power: rms power of the signal measured over a period long enough to smooth out any fluctuations in
the signal power over time such as those due to transmission bursts
NOTE: This can be measured on an average power meter with an input filter time constant set high enough to
average out fluctuations in the measured signal power or alternatively using a spectrum analyser with
settings shown in table D.1.
onset of picture degradation: minimum time between successive errors in the displayed video is 15 seconds
radio equipment: product or relevant component thereof capable of communication by means of the emission and/or
reception of radio waves utilizing the spectrum allocated to terrestrial/space radio communication
NOTE: For the purposes of the present document the radio equipment is a digital terrestrial television broadcast
receiver comprising of at least a tuner and demodulator.
receiver overloading: interfering signal level expressed in dBm, above which the receiver begins to lose its ability to
discriminate against interfering signals at frequencies differing from that of the wanted signal due to the onset of strong
non-linear behaviour
NOTE 1: In the present document the overload level is determined by the onset of picture degradation.
NOTE 2: Above the overloading level the receiver will behave in a non-linear way, but does not necessarily fail
immediately depending on the receiver and interference characteristics.
sensitivity: maximum usable sensitivity is defined as the minimum receiver Radio Frequency (RF) input signal level or
field strength able to produce a specified analogue SINAD ratio or Bit Error Ratio (BER), or other specified output
performance which depends on this input signal level
NOTE: In the present document receiver sensitivity is determined by the onset of picture degradation.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
C Wanted signal
G Coupling Gain
C
I Interferer signal
I Licensed power
lic
I Long term rms power
rms
P Received UE interference power
RX_UE
P UE transmitted power
UE
ETSI
10 ETSI EN 303 340 V1.2.1 (2020-09)
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
256-QAM 256-ary Quadrature Amplitude Modulation
64-QAM 64-ary Quadrature Amplitude Modulation
ACE Active Constellation Extension
ACLR Adjacent Channel Leakage power Ratio
ACS Adjacent Channel Selectivity
AGC Automatic Gain Control
AWGN Additive White Gaussian Noise
BER Bit Error Ratio
BS Base Station for mobile communications
CEPT European Conference of Postal and Telecommunications administrations
DTG UK Digital TV Group
DTT Digital Terrestrial Television
DVB-T Digital Video Broadcast Terrestrial - first generation
NOTE: See ETSI EN 300 744 [i.4].
DVB-T2 Digital Video Broadcast Terrestrial - second generation
NOTE: See ETSI EN 302 755 [i.5].
EFTA European Free Trade Association
FEC Forward Error Correction
FEF Future Extension Frame
FFT Fast Fourier Transform
HEM High Efficiency Mode
ISSY Input Stream SYnchronizer
LAPR Licensed to Average Power Ratio
NOTE: This is the ratio of the licensed power (described above) to the long term rms power (described above) of
the signal.
LDPC Low Density Parity Check (codes)
LTE Long Term Evolution
PAPR Peak to Average Power Ratio
PLP Physical Layer Pipe
QAM Quadrature Amplitude Modulation
RF Radio Frequency
SINAD (Signal + Noise + Distortion)/(Noise + Distortion) ratio
SISO Single Input Single Output
NOTE: Meaning one transmitting and one receiving antenna.
TFS Time-Frequency Slicing
UE User Equipment for mobile communications
NOTE: Example handsets, dongles, etc.
UHF Ultra High Frequency
VHF Very High Frequency
ETSI
11 ETSI EN 303 340 V1.2.1 (2020-09)
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 declared operational
environmental profile.
NOTE: The applicability of the different tests as defined in annex E may vary depending upon the selected
country profile.
4.2 Conformance requirements
4.2.1 DVB-T and DVB-T2 configurations for testing
4.2.1.1 Modulation Parameters
Representative DVB-T and DVB-T2 configurations used for conformance specification and testing are shown in
tables 2 and 3. These are used in the Nordig specification test plan [i.1].
Table 2: DVB-T configuration
Parameter Value for "7 MHz" VHF tests Value for "8 MHz" UHF tests
Bandwidth 6,66 MHz 7,61 MHz
FFT size 8K 8K
Modulation 64-QAM 64-QAM
Hierarchy Non-Hierarchical Non-Hierarchical
Guard interval 1/4 1/4
Code rate 2/3 2/3
Channel Bandwidth 7 MHz 8 MHz
Table 3: DVB-T2 configuration
Parameter Value for "7 MHz" VHF tests Value for "8 MHz" UHF tests
Bandwidth 6,66 MHz 7,77 MHz
FFT 32K 32K
Carrier mode Normal Extended
SISO/MISO SISO SISO
Guard Interval 1/16 1/16
Version 1.2.1 1.2.1
Number of symbols/frame (Lf) 42 62
Pilot pattern PP4 PP4
TFS No No
FEF Not used Not used
Auxiliary streams Not used Not used
Subslices/T2 frame 1 1
Frames/Superframe 2 2
L1 post FEC type 16k LDPC (see note 1) 16k LDPC (see note 1)
L1 repetition 0 0
L1 post extension No No
L1 post modulation 64-QAM 64-QAM
L1 post scrambling None None
L1_ACE_MAX 0 (see note 2) 0 (see note 2)
L1 bias balancing cells No No
PAPR L1-ACE & TR (see note 3) L1-ACE & TR (see note 3)
PAPR: Vclip 3,1 V (see note 1) 3,1 V (see note 1)
PAPR: Number of iterations 10 (see note 1) 10 (see note 1)
TS bit rate (Mbit/s) 31,146 36,552
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12 ETSI EN 303 340 V1.2.1 (2020-09)
Parameter Value for "7 MHz" VHF tests Value for "8 MHz" UHF tests
Input mode Mode A (single PLP mode) Mode A (single PLP mode)
Number of PLPs 1 1
PLP type Data type 1 Data type 1
Constellation rotation Yes Yes
PLP FEC type 64k LDPC 64k LDPC
FEC Frame length 64 800 (see note 4) 64 800 (see note 4)
Baseband Mode High Efficiency Mode (HEM) High Efficiency Mode (HEM)
ISSY None None
In band signalling Disabled Disabled
Null packet deletion Disabled Disabled
Time interleaver length 3 3
Frame interval 1 1
Time interleaver type 0 0
T2 frames/Interleaver frame 1 (see note 5) 1 (see note 5)
FEC Blocks/Interleaving Frame 132 200
Code rate 2/3 2/3
Modulation 256-QAM 256-QAM
NOTE 1: This parameter is preset on some modulators.
NOTE 2: This value disables L1 ACE operation.
NOTE 3: This parameter is referred to as "TR" on some modulators.
NOTE 4: This parameter is referred to as "Normal" on some modulators.
NOTE 5: Derived value shown for information only. Forced to 1 when time interleaver type = 0.
4.2.1.2 Receiver Configuration
Some DTT receiver products may include an optional internal preamplifier between the antenna connector and the
tuner. All tests in the present document shall be conducted with the optional preamplifier in the default shipping
condition (ON or OFF).
4.2.2 Interference and wanted test signals
Three LTE waveforms with 10 MHz bandwidth are used in the present document as interference sources for the
receiver conformance specification and tests. These waveforms are based on recordings from LTE BS and UE
equipment which have been converted into a suitable format for replay on laboratory vector signal generators. Two of
these waveforms have been selected because they are known to exercise the operation of DTT receiver Automatic Gain
Control (AGC) systems which is a key area for receiver performance optimization. In particular tests using the UE
waveform may require receiver optimization. These waveforms are contained in archive en_303340v010201p0.zip
which accompanies the present document. More waveform details are given in annex B.
The wanted DVB-T and DVB-T2 test signals shall carry a video stream containing moving images and an audio signal.
Recommendation ITU-R BT.1729 test signal [i.10] may be used.
4.2.3 Sensitivity
4.2.3.1 Definition
The maximum usable sensitivity is defined as the minimum receiver Radio Frequency (RF) input signal level or field
strength able to produce a specified analogue SINAD ratio or Bit Error Ratio (BER), or other specified output
performance which depends on this input signal level. In the present document receiver sensitivity is determined by the
onset of picture degradation.
4.2.3.2 Method of Measurement
4.2.3.2.1 Test arrangement description
The test arrangement is shown in figure 1.
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13 ETSI EN 303 340 V1.2.1 (2020-09)
4.2.3.2.2 Test procedure
The steps of the test procedure are given below:
a) The wanted signal, provided by signal generator C, shall be set to the wanted signal frequency as shown in
table 4 and configured with the appropriate DTT mode parameters (tables 2 and 3).
b) Determine the attenuation of the cables, splitters, 50/75 ohm matching pad.
c) Set the level of the wanted signal C at the broadcast receiver tuner port to -50 dBm and note the value of the
"attenuator C" (= A ).
C1
d) Tune the DTT receiver to the wanted channel.
e) Increase the "attenuator C" sufficiently to cause complete picture failure.
f) Adjust "attenuator C" gradually until the onset of picture degradation occurs. Force the receiver under test to
re-acquire and re-adjust "attenuator C" until the onset of picture degradation occurs. Note the attenuator setting
(= A ).
C2
g) The receiver sensitivity shall be recorded in the measurement record (table C.1) as:
-50 - (A - A ) dBm (1)
C2 C1
h) Repeat steps a) to g) for the remaining frequencies in table 4.
Figure 1: Measurement arrangement for sensitivity tests
4.2.3.3 Limits
The sensitivity limits which shall be met are shown in table 4. The equipment shall be tested in its normal operating
mode.
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14 ETSI EN 303 340 V1.2.1 (2020-09)
Table 4: Receiver sensitivity
Test Test C Required sensitivity limit for DTT
number description wanted signal configurations in tables 2 and 3
(dBm)
centre frequency
(MHz) DVB-T DVB-T2
Sensitivity
1 198,5 -77 -75
VHF
Sensitivity
2 666 -77 -75
UHF
NOTE: For applicability of tests see annex E.
4.2.4 Adjacent channel selectivity
4.2.4.1 Definition
In the present document, adjacent channel selectivity (I/C) is defined as the measure of the capability of the receiver to
receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal
which differs in frequency from the wanted signal by an amount equal to the adjacent channel separation for which the
equipment is intended. In the present document adjacent channel selectivity is determined by the onset of picture
degradation.
NOTE 1: The interference power I is equal to the licensed power of the interferer. This definition does not have the
same meaning as the term "Adjacent Channel Selectivity" (ACS) used in other organizations such as ITU,
CEPT, and in co-existence studies. The adjacent channel selectivity in the present document is equivalent
to the measured I/C ratio.
NOTE 2: In the present document this definition also applies to an unwanted signal at a specified frequency offset
in a non-adjacent channel.
4.2.4.2 Method of Measurement
4.2.4.2.1 Test arrangement description
The basic measurement arrangement is shown in the top half of figure 2. Other arrangements may also be used - for
example a widely deployed test configuration shown at the bottom of figure 2 uses a single item of test equipment that
combines generator C and generator I. Some signal generators include precision RF attenuators which can be used in
place of "attenuator I" and "attenuator C". Some generators have an optimum output power level where the ACLR is at
a maximum and in these circumstances it may be preferable to use external attenuators to maintain the optimum ACLR
over the interference power level used for the test.
Additional information on the optional elements of the test arrangement, measurement techniques, recommended
instrument settings are given in annex D.
4.2.4.2.2 Requirements for the ACLR of the interfering signal
See annex F.
4.2.4.2.3 Test procedure
a) Two signal generators, I and C, shall be connected to the receiver via a combining network.
b) Determine the attenuation of the cables, combiner, splitter and 50/75 ohm matching pad.
c) The wanted signal, provided by signal generator C, shall be set to the wanted signal frequency C as shown in
table 5 and configured with the appropriate DTT mode parameters (tables 2 and 3). Turn this generator off (or
to at least 30 dBc below the interferer signal) maintaining output impedance.
d) The unwanted signal I, provided by signal generator I, shall be configured with the required interferer
waveform and interferer signal frequency as shown in table 5.
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15 ETSI EN 303 340 V1.2.1 (2020-09)
e) The unwanted signal power at the broadcast receiver tuner port shall be set to the rms interferer power I in
rms
table 5. This power shall be verified with the power meter or spectrum analyser. Recommended instrument
settings are described in clause D.2.
f) Turn on signal generator C and adjust "attenuator C" so that the rms powers of the interferer I and wanted
signal C are equal. Note this attenuator setting (= A ).
C1
g) Tune the DTT receiver to the wanted channel.
h) Increase "attenuator C" in 1 dB steps or less until the onset of picture degradation occurs (see clause 3.1 for
definition). Force the receiver under test to re-acquire and re-adjust "attenuator C" until the onset of picture
degradation occurs. Note the attenuator setting (= A ).
C2
i) The adjacent channel selectivity (I/C) shall be recorded in the measurement record (table C.2) as A -A +
C2 C1
LAPR dB, where LAPR is the licensed to average power ratio shown in table 5. Alternatively the measured
wanted signal power C shall be recorded in the measurement record (table C.2) as I - (A - A ) dBm.
rms C2 C1
j) Repeat steps b) to i) for the remaining tests in table 5.
Figure 2: Generic measurement arrangement for adjacent channel selectivity,
blocking and overloading tests
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16 ETSI EN 303 340 V1.2.1 (2020-09)
4.2.4.3 Limits
The I/C limits which shall be met are shown in table 5. The equipment shall be tested in its normal operating mode.
Table 5: Adjacent channel selectivity requirements
Interferer (I) I C I Ilic Irms I Minimum required I/C Equivalent wanted
type interference test wanted signal interferer (licensed) (rms) LAPR limit (where I = I ) for level C for DTT
lic rms
Test
signal waveform centre centre (dBm) (dBm) (dB) DTT configurations in configurations in
name frequency frequency tables 2 and 3 tables 2 and 3
(MHz) (MHz) (dB) (dBm)
DVB-T DVB-T2 DVB-T
DVB-T2
1 10 MHz LTE
LTE_BS-
(see notes 1 800 BS light 786 796 -15 -23,3 8,3 35 36 -50 -51
idle_synth
and 2) load (near idle)
10 MHz LTE
2 LTE_BS- 763
700 BS light 690 -15 -23,3 8,3 43 43 -58 -58
(see note 2) idle_synth (see note 3)
load (near idle)
10 MHz LTE
3 Short_UE-Video-
700 UE Video- 690 708 -25 -42,7 17,7 33 38 -58 -63
(see note 2) Stream
Stream
N-1 UHF 8 MHz DVB-T 482 474 -30 -30 0 25 25 -55 -55
(see note 2)
N+1 UHF 8 MHz DVB-T 482 490 -30 -30 0 25 25 -55 -55
(see note 2)
NOTE 1: For broadcast receivers that do not receive DVB-T/T2 signals above 698 MHz, test 1 is not applicable.
NOTE 2: For applicability of tests see annex E.
NOTE 3: It is acceptable to use an alternative lower interference frequency such as 761 MHz. This may be necessary due to test equipment limitations.
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17 ETSI EN 303 340 V1.2.1 (2020-09)
4.2.5 Blocking
4.2.5.1 Definition
The measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given
degradation due to the presence of an unwanted signal at any frequency other than those of the spurious responses or of
the adjacent channels. In the present document receiver blocking is determined by the onset of picture degradation.
NOTE: The wanted signal level in the blocking tests of the present document is fixed at the specified receiver
sensitivity level plus 6 dB.
4.2.5.2 Method of Measurement
4.2.5.2.1 Test arrangement description
See clause 4.2.4.2.1.
4.2.5.2.2 Requirements for the ACLR of the interfering signal
See annex F.
The interference signal I is a fully loaded LTE-BS signal with 10 MHz channel bandwidth.
4.2.5.2.3 Test procedure
a) Two signal generators, I and C, shall be connected to the receiver via a combining network.
b) Determine the attenuation of the cables, combiner, splitter and 50/75 ohm matching pad.
c) The wanted signal, provided by signal generator C, shall be set to the wanted signal frequency as shown in
table 6 and configured with the appropriate DTT mode parameters (tables 2 and 3).
d) The unwanted signal I, provided by signal generator I, shall be configured with the required interferer
waveform, interferer signal frequency as shown in table 6.
e) Adjust "attenuator C" to set the wanted level to -40 dBm at the broadcast receiver tuner port. This power shall
be verified with the power meter or spectrum analyser. Then reduce the wanted signal power to the value of
C in table 6 by increasing "attenuator C" by 31 dB for test 1 or by 29 dB for test 2.
rms
f) Adjust "attenuator I" to set the interferer level to -40 dBm at the broadcast r
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