SIST EN 303 345-2 V1.1.1:2020

SLOVENSKI STANDARD
SIST EN 303 345-2 V1.1.1:2020
01-april-2020

Radiodifuzijski zvočni sprejemniki - 2. del: Radiodifuzijska zvočna storitev AM -

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

The present document may be made available in electronic versions and/or in print. The content of any electronic and/or

print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any

existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

Users of the present document should be aware that the document may be subject to revision or change of status.

Information on the current status of this and other ETSI documents is available at

If you find errors in the present document, please send your comment to one of the following services:

No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying

The content of the PDF version shall not be modified without the written authorization of ETSI.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 6

Introduction ........................................................................................................................................................ 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 .............................................................................................................................................................. 8

3.3 Abbreviations ..................................................................................................................................................... 9

4 Technical requirements specifications ..................................................................................................... 9

4.1 Test signal configurations .................................................................................................................................. 9

4.2 Sensitivity ......................................................................................................................................................... 10

4.2.1 Definition .................................................................................................................................................... 10

4.2.2 Limits .......................................................................................................................................................... 10

4.2.3 Conformance............................................................................................................................................... 11

4.3 Adjacent channel selectivity and blocking ....................................................................................................... 11

4.3.1 Definition .................................................................................................................................................... 11

4.3.2 Limits .......................................................................................................................................................... 11

4.3.3 Conformance............................................................................................................................................... 12

5 Testing for compliance with technical requirements .............................................................................. 12

5.1 Environmental conditions for testing ............................................................................................................... 12

5.2 Interpretation of the measurement results ........................................................................................................ 13

Annex A (informative): Relationship between the present document and the essential

requirements of Directive 2014/53/EU ......................................................... 14

Annex B (informative): Test signal generation .................................................................................... 15

Annex C (informative): Development of the present document ......................................................... 17

C.1 Introduction ............................................................................................................................................ 17

C.2 Relevance ............................................................................................................................................... 17

C.3 Receiver parameters under article 3.2 .................................................................................................... 17

C.3.1 General ............................................................................................................................................................. 17

C.3.2 Receiver sensitivity .......................................................................................................................................... 17

C.3.3 Receiver co-channel rejection .......................................................................................................................... 18

C.3.4 Receiver selectivity .......................................................................................................................................... 18

C.3.4.1 General ........................................................................................................................................................ 18

C.3.4.2 Single signal selectivity .............................................................................................................................. 18

C.3.4.2.1 Receiver adjacent signal selectivity (adjacent channel selectivity) ....................................................... 18

C.3.4.2.2 Receiver spurious response rejection .................................................................................................... 18

C.3.4.3 Receiver multiple signal selectivity ............................................................................................................ 18

C.3.4.3.1 Receiver blocking ................................................................................................................................. 18

C.3.4.3.2 Receiver radio-frequency intermodulation ............................................................................................ 19

C.3.4.3.3 Receiver adjacent signal selectivity (adjacent channel selectivity) ....................................................... 19

C.3.4.4 Other receiver effects .................................................................................................................................. 19

C.3.4.4.1 Receiver dynamic range ........................................................................................................................ 19

C.3.4.4.2 Reciprocal mixing ................................................................................................................................. 19

C.3.4.4.3 Desensitization ...................................................................................................................................... 19

C.3.5 Receiver unwanted emissions in the spurious domain ..................................................................................... 20

Annex D (informative): Change History .............................................................................................. 21

History .............................................................................................................................................................. 22

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

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

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.

This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic

The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.2] 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

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

The present document is part 2 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].

The present document has a number of test data files that are contained in archive en_30334501v010101p0.zip which

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

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

The present document provides the necessary limits and conformance requirements for radio receivers to meet the

essential requirements of article 3.2 of Directive 2014/53/EU [i.1] for the AM sound broadcast service and is used with

reference to ETSI EN 303 345-1 [1], which describes the generic requirements and test methods.

The present document specifies the test signal configuration and the limits for sensitivity, selectivity and blocking for

NOTE: The relationship between the present document and essential requirements of article 3.2 of Directive

References are specific, identified by date of publication and/or edition number or version number. Only the cited

Referenced documents which are not found to be publicly available in the expected location might be found at

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

The following referenced documents are necessary for the application of the present document.

[1] ETSI EN 303 345-1 (V1.1.1) (06-2019): "Broadcast Sound Receivers; Part 1: Generic

[2] Recommendation ITU-R BS.468-4 (07/1986): "Measurement of audio-frequency noise voltage

[3] Recommendation ITU-R BS.559-2 (06/1990): "Objective measurement of radio-frequency

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

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

The following referenced documents are not necessary for the application of the present document but they assist the

[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the

harmonisation of the laws of the Member States relating to the making available on the market of

[i.2] 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

[i.3] ETSI TR 100 028 (all parts) (V1.4.1): "Electromagnetic compatibility and Radio spectrum Matters

(ERM); Uncertainties in the measurement of mobile radio equipment characteristics".

[i.4] ETSI TR 100 028-2 (V1.4.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);

Uncertainties in the measurement of mobile radio equipment characteristics; Part 2".

[i.5] Recommendation ITU-R BS.1615-1: "Planning parameters for digital sound broadcasting at

[i.6] AES17: "AES standard method for digital audio engineering - Measurement of digital audio

[i.7] ETSI EG 203 336 (V1.1.1) (08-2015): "Electromagnetic compatibility and Radio spectrum

Matters (ERM); Guide for the selection of technical parameters for the production of Harmonised

[i.8] ITU GE75: "Final Acts of the Regional Administrative LF/MF Broadcasting Conference

[i.9] Recommendation ITU-R BS.560-4 (10/1997): "Radio-frequency protection ratios in LF, MF and

[i.11] CENELEC EN 55032:2015: "Electromagnetic compatibility of multimedia equipment - Emission

For the purposes of the present document, the terms given in Directive 2014/53/EU [i.1] and the following apply:

external antenna: antenna designed to be connected to the equipment with the use of a 50 Ω or 75 Ω external

integral antenna: antenna which is detachable from the equipment without the use of any tools, and not using a 50 Ω

NOTE: A device that uses a supplied earphone as the antenna has an integral antenna.

dBQ: audio decibels after Recommendation ITU-R BS.468-4 [2] noise weighting and a quasi-peak detector have been

The generated AM signals (wanted, unwanted and blocking) shall be in accordance with table 1. The configuration is

NOTE 1: The filter shall have a cut-off frequency of 4,5 kHz and a minimum roll-off of 60 dB/octave.

NOTE 2: This is equivalent to a quasi-peak modulation depth of 50 %. The demodulated audio level will have the

same quasi-peak value as that of a carrier with 50 % AM modulation depth modulated with a 1 kHz sinusoid.

The means of generating the noise modulation for the "unwanted" signal is shown in figure 1.

NOTE: In a), the low pass filter has a cut-off frequency of 4,5 kHz and a minimum roll-off of 60 dB/octave;

in b), the low pass filter has a cut-off frequency of 20 kHz and a minimum roll-off of 40 dB/octave.

Waveform files to produce the signals using either the PC sound card method or the vector signal generator method are

contained in archive en_30334501v010101p0.zip which accompanies ETSI EN 303 345-1 [1]. For further details see

The receiver sensitivity is the minimum wanted signal level required to provide a given level of audio quality.

The limits for sensitivity specified in table 2 shall apply. Each figure quoted is the required level of wanted signal which

provides a given level of audio quality. The audio impairment criterion relevant for these tests is that the audio

NOTE: If the receiver cannot be tuned to 9,650 MHz, the wanted signal centre frequency

shall be set to the closest alternate from the following list: 3,980 MHz, 6,050 MHz,

Conformance testing as defined in ETSI EN 303 345-1 [1], clause 5.3.4.1 shall be carried out for each frequency band

provided by the receiver. The wanted signal generator shall be set to produce a signal according to table 1 at the centre

frequency according to table 2. The required sensitivity level shall be as indicated in table 2. If the impairment criterion

given in clause 4.2.2 is met for all provided bands then the receiver has passed the sensitivity requirement.

The adjacent channel selectivity is a 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 a small multiple of the adjacent channel spacing. The wanted and unwanted

The blocking ratio is a 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 input signal at a given frequency separation. The wanted and

In order to provide effective use of spectrum, devices shall be able to demodulate the tuned signal in the presence of

similar signals in adjacent channels. In addition, testing shall also be performed to check the ability of the receiver to

work effectively with interfering signals at a greater separation from the wanted signal (blocking).

The limits for selectivity and blocking specified in table 4 shall apply with the channel spacings given in table 3. Each

figure quoted is the minimum acceptable level of unwanted signal, relative to that of the wanted signal, which provides

a given level of audio quality. The audio impairment criteria relevant for these tests is that the audio SNR ≥ 22 dBQ ref

NOTE 1: The ACS and blocking requirements are currently separated into different limits for radiated and

conducted testing methods. These limits are likely to be unified in a future revision of the present

document. Users of the present document should consult frequently the latest list published in the Official

NOTE 2: The frequency of the interferer shall be calculated using the channel spacing data in table 3 for each of

the 6 defined adjacent channels N = {-3, -2, -1, +1, +2, +3} and the two blocking offsets. Each row of

NOTE 3: The minimum level of I for the relevant level of impairment is calculated by adding the I/C ratio to the

NOTE 4: If the receiver cannot be tuned to 9,650 MHz, the wanted signal centre frequency shall be set to the

closest alternate from the following list: 3,980 MHz, 6,050 MHz, 7,330 MHz, 11,850 MHz, 13,720 MHz,

Conformance testing as defined in ETSI EN 303 345-1 [1], clause 5.3.5.1 shall be carried out for each frequency band

provided by the receiver and for all eight frequency offsets specified in table 3.

The wanted and unwanted signal generators shall be set to produce signals according to table 1. The centre frequency of

the wanted signal is set according to table 4. The frequency offset of the unwanted or blocking signal to the wanted

signal is set according to table 3. The required wanted signal level shall be as indicated in table 4. The required

unwanted or blocking signal level offset shall be as indicated in table 4. If the impairment criterion given in clause 4.3.2

is met for all the test offsets for all provided bands then the receiver has passed the adjacent channel selectivity and

Tests defined in the present document shall be carried out at representative points within the boundary limits of the

Where technical performance varies subject to environmental conditions, tests shall be carried out under a sufficient

variety of environmental conditions (within the boundary limits of the declared operational environmental profile) to

The equipment shall be tested under normal test conditions according to the relevant product and basic standards or to

the information accompanying the equipment, which are within the manufacturers declared range of humidity,

temperature and supply voltage. The test conditions shall be recorded in the test report.