Electromagnetic compatibility and Radio spectrum Matters (ERM) - ElectroMagnetic Compatibility (EMC) standard for radio equipment and services - Part 24: Specific conditions for IMT-2000 CDMA Direct Spread (UTRA) for Mobile and portable (UE) radio and ancillary equipment

The present document, together with EN 301 489-1 [1], covers the assessment of "3rd generation" digital cellular (IMT-2000 CDMA Direct Spread) (UTRA) mobile and portable (UE) radio terminal equipment and associated ancillary equipment in respect of ElectroMagnetic Compatibility (EMC). Technical specifications related to the antenna port and emissions from the enclosure port of radio equipment are not included in the present document. Such technical specifications are found in the relevant product standards for the effective use of the radio spectrum.
The present document specifies the applicable test conditions, performance assessment and performance criteria of "3rd generation" digital cellular (IMT-2000 CDMA Direct Spread) (UTRA) mobile and portable (UE) radio terminal equipment and associated ancillary equipment.
Examples of digital cellular mobile and portable radio equipment covered by the present document are given in annex A. In case of differences (for instance concerning special conditions, definitions, abbreviations) between the present document and EN 301 489-1 [1], the provisions of the present document take precedence. Base station (BS) equipment operating within network infrastructure is outside the scope of the present document. However, the present document does cover mobile and portable equipment that is intended to be operated in a fixed location while connected to the AC mains (see clause 5.5).The environment classification and the emission and immunity requirements used in the present document are as stated in EN 301 489-1 [1], except for any special conditions included in the present document.

Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) - Standard elektromagnetne združljivosti (EMC) za radijsko opremo in storitve - 24. del: Posebni pogoji za mobilno in prenosno (UE) radijsko in pomožno opremo po standardu IMT-2000 s CDMA (kodno porazdeljenim sodostopom) in neposredno modulacijo po razpršenem spektru (“Direct Spread”) (UTRA - prizemni dostop do UMTS)

General Information

Status
Published
Publication Date
30-Jan-2008
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
18-Jan-2008
Due Date
24-Mar-2008
Completion Date
31-Jan-2008
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) - Standard elektromagnetne združljivosti (EMC) za radijsko opremo in storitve - 24. del: Posebni pogoji za mobilno in prenosno (UE) radijsko in pomožno opremo po standardu IMT-2000 s CDMA (kodno porazdeljenim sodostopom) in neposredno modulacijo po razpršenem spektru (“Direct Spread”) (UTRA - prizemni dostop do UMTS)Electromagnetic compatibility and Radio spectrum Matters (ERM) - ElectroMagnetic Compatibility (EMC) standard for radio equipment and services - Part 24: Specific conditions for IMT-2000 CDMA Direct Spread (UTRA) for Mobile and portable (UE) radio and ancillary equipment33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.20Sprejemna in oddajna opremaReceiving and transmitting equipmentICS:Ta slovenski standard je istoveten z:EN 301 489-24 Version 1.4.1SIST EN 301 489-24 V1.4.1:2008en01-marec-2008SIST EN 301 489-24 V1.4.1:2008SLOVENSKI

STANDARD
SIST EN 301 489-24 V1.4.1:2008

ETSI EN 301 489-24 V1.4.1 (2007-09)Harmonized European Standard (Telecommunications series) Electromagnetic compatibilityand Radio spectrum Matters (ERM);ElectroMagnetic Compatibility (EMC) standardfor radio equipment and services;Part 24: Specific conditions for IMT-2000 CDMADirect Spread (UTRA) for Mobile andportable (UE) radio and ancillary equipment

SIST EN 301 489-24 V1.4.1:2008
ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 2

Reference REN/ERM-EMC-258-24 Keywords EMC, IMT-2000, radio, regulation, terminal, UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88

Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. 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 http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http://portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2007. All rights reserved.

DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. SIST EN 301 489-24 V1.4.1:2008

ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 3

Contents Intellectual Property Rights................................................................................................................................5 Foreword.............................................................................................................................................................5 1 Scope........................................................................................................................................................6 2 References................................................................................................................................................6 3 Definitions and abbreviations...................................................................................................................7 3.1 Definitions..........................................................................................................................................................7 3.2 Abbreviations.....................................................................................................................................................8 4 Test conditions.........................................................................................................................................8 4.1 General...............................................................................................................................................................8 4.2 Arrangements for test signals.............................................................................................................................8 4.2.1 Arrangements for test signals at the input of transmitters.............................................................................9 4.2.2 Arrangements for test signals at the output of transmitters...........................................................................9 4.2.3 Arrangements for test signals at the input of receivers.................................................................................9 4.2.4 Arrangements for test signals at the output of receivers.............................................................................10 4.3 Exclusion bands................................................................................................................................................10 4.3.1 Transmitter exclusion band.........................................................................................................................10 4.3.2 Receiver exclusion band.............................................................................................................................10 4.4 Narrow band responses on receivers................................................................................................................10 4.5 Normal test modulation....................................................................................................................................11 5 Performance assessment.........................................................................................................................11 5.1 General.............................................................................................................................................................11 5.2 Equipment which can provide a continuous communication link....................................................................11 5.3 Equipment which does not provide a communication link...............................................................................11 5.4 Ancillary equipment.........................................................................................................................................11 5.5 Equipment classification..................................................................................................................................11 6 Performance criteria...............................................................................................................................12 6.1 Performance criteria for continuous phenomena..............................................................................................12 6.2 Performance criteria for Transient phenomena................................................................................................12 7 Applicability overview tables.................................................................................................................13 7.1 Emission...........................................................................................................................................................13 7.1.1 General........................................................................................................................................................13 7.1.2 Special conditions.......................................................................................................................................13 7.2 Immunity..........................................................................................................................................................13 7.2.1 General........................................................................................................................................................13 7.2.2 Special conditions.......................................................................................................................................13 Annex A (informative): Examples of mobile and portable radio and ancillary equipment for digital cellular radio telecommunications systems within the scope of the present document.....................................................................................14 A.1 Mobile and portable radio equipment, and ancillary equipment for the IMT-2000 CDMA Direct Spread (UTRA)......................................................................................................................................14 Annex B (normative): Performance assessment voice call. Audio breakthrough..........................15 B.1 Calibration of audio levels.....................................................................................................................15 B.2 Measurement of audio levels..................................................................................................................16 Annex C (normative): Performance assessment of data transfer call. Error Ratios.....................17 C.1 Calibration of data transfer.....................................................................................................................17 C.2 Derivation of Error Ratios......................................................................................................................17 SIST EN 301 489-24 V1.4.1:2008

ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 4

C.3 EUT without data application ancillary..................................................................................................18 C.4 EUT with data application ancillary.......................................................................................................18 Annex D (informative): The EN title in the official languages...........................................................19 Annex E (informative): Bibliography...................................................................................................21 History..............................................................................................................................................................22

SIST EN 301 489-24 V1.4.1:2008
ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 5

Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document has been produced by ETSI in response to a mandate from the European Commission issued under Council Directive 98/34/EC [3] (as amended) laying down a procedure for the provision of information in the field of technical standards and regulations. The present document is intended to become a Harmonized Standard, the reference of which will be published in the Official Journal of the European Communities referencing the Council Directive on the approximation of the laws of the Member States relating to electromagnetic compatibility ("the EMC Directive") (89/336/EEC as amended) and Directive 1999/5/EC [2] of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity ("the R&TTE Directive"). The present document is part 24 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].

National transposition dates Date of adoption of this EN: 31 August 2007 Date of latest announcement of this EN (doa): 30 November 2007 Date of latest publication of new National Standard or endorsement of this EN (dop/e):

31 May 2008 Date of withdrawal of any conflicting National Standard (dow): 31 May 2009

SIST EN 301 489-24 V1.4.1:2008
ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 6

1 Scope The present document, together with EN 301 489-1 [1], covers the assessment of "3rd generation" digital cellular (IMT-2000 CDMA Direct Spread) (UTRA) mobile and portable (UE) radio terminal equipment and associated ancillary equipment in respect of ElectroMagnetic Compatibility (EMC). Technical specifications related to the antenna port and emissions from the enclosure port of radio equipment are not included in the present document. Such technical specifications are found in the relevant product standards for the effective use of the radio spectrum. The present document specifies the applicable test conditions, performance assessment and performance criteria of "3rd generation" digital cellular (IMT-2000 CDMA Direct Spread) (UTRA) mobile and portable (UE) radio terminal equipment and associated ancillary equipment. Examples of digital cellular mobile and portable radio equipment covered by the present document are given in annex A. In case of differences (for instance concerning special conditions, definitions, abbreviations) between the present document and EN 301 489-1 [1], the provisions of the present document take precedence. Base station (BS) equipment operating within network infrastructure is outside the scope of the present document. However, the present document does cover mobile and portable equipment that is intended to be operated in a fixed location while connected to the AC mains (see clause 5.5). The environment classification and the emission and immunity requirements used in the present document are as stated in EN 301 489-1 [1], except for any special conditions included in the present document. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. [1] ETSI EN 301 489-1 (V1.6.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 1: Common technical requirements". [2] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity (R&TTE Directive). [3] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a procedure for the provision of information in the field of technical standards and regulations. [4] Void. [5] Void. SIST EN 301 489-24 V1.4.1:2008

ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 7

[6] ETSI TS 134 108: "Universal Mobile Telecommunications System (UMTS); Common test environments for User Equipment (UE); Conformance testing (3GPP TS 34.108 version 6.4.0 Release 6)". [7] ETSI TS 125 101: "Universal Mobile Telecommunications System (UMTS); User Equipment (UE) radio transmission and reception (FDD) (3GPP TS 25.101 version 7.5.0 Release 7)". [8] ETSI TS 134 109: "Universal Mobile Telecommunications System (UMTS); Terminal logical test interface; Special conformance testing functions (3GPP TS 34.109 version 6.2.0 Release 6)". [9] Void. [10] ITU-T Recommendation P.64 (1999): "Determination of sensitivity/frequency characteristics of local telephone systems". [11] ITU-T Recommendation P.76 (1988): "Determination of loudness ratings; fundamental principles". [12] ETSI TS 125 102: "Universal Mobile Telecommunications System (UMTS); User Equipment (UE) radio transmission and reception (TDD) (3GPP TS 25.102 version 7.4.0 Release 7)". 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in EN 301 489-1 [1] and the following apply: camped on a cell: UE is in idle mode and has completed the cell selection/reselection process and has chosen a cell. The UE monitors system information and (in most cases) paging information NOTE: The services may be limited, and the PLMN may not be aware of the existence of the UE within the chosen cell. data application ancillary: ancillary which provides send and/or receive data access to UMTS services via UE End-User data: manufacturer defined data patterns for data transfer testing NOTE: Represents EUT's typical user application data pattern (e.g. photo, video, text file, message) in its characteristics. idle mode: state of User Equipment (UE) when switched on but with no Radio Resource Control (RRC) connection International Mobile Telecommunications 2000 (IMT-2000): third generation mobile systems which provide access, by means of one or more radio links, to a wide range of telecommunications services supported by the fixed telecommunication networks (e.g. PSTN, ISDN or IP), and to other services which are specific to mobile users maximum average power: average transmitter output power obtained over any specified time interval, including periods with no transmission, when the transmit time slots are at the maximum power setting traffic mode: state of User Equipment (UE) when switched on and with Radio Resource Control (RRC) connection established Universal Terrestrial Radio Access (UTRA): radio access network of the telecommunications system, incorporating mobile cellular and other functionality, that is the subject of specifications produced by 3GPP User Equipment (UE): "Mobile Station" (MS) which is an entity capable of accessing a set of UTRA services via one or more radio interfaces NOTE: This entity may be stationary or in motion within the UTRA service area while accessing the UTRA services, and may simultaneously serve one or more users. SIST EN 301 489-24 V1.4.1:2008

ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 8

3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AC Alternating Current BER Bit Error Ratio BLER Block Error Ratio BPF Band Pass Filter BS Base Station BW BandWidth CF Centre Frequency CRC Cyclic Redundancy Check DL Down Link (from BS to UE) DRX Discontinuous Reception DTX Discontinuous Transmission (see note) EMC ElectroMagnetic Compatibility EUT Equipment Under Test FDD Frequency Division Duplex IMT-2000 International Mobile Telecommunications 2000 LR Location Registration MRP Mouth Reference Point (artificial head) MS Mobile Station RF Radio Frequency RRC Radio Resource Control SPL Sound Pressure Level TDD Time Division Duplex TT Transient phenomena applied to Transmitters

UARFCN UTRA Absolute Radio Frequency Channel Number (see note) UE User Equipment UL Up Link (From UE to BS) UTRA Universal Terrestrial Radio Access NOTE: Refer to Terminology specifications TR 121 905 and TR 125 990 (see bibliography) for further details. 4 Test conditions For the purpose of the present document, the test conditions of EN 301 489-1 [1], clause 4, shall apply as appropriate. Further product related test conditions for digital cellular mobile and portable radio equipment are specified in the present document. 4.1 General Whenever the Equipment Under Test (EUT) is provided with a detachable antenna, the EUT shall be tested with the antenna fitted in a manner typical of normal intended use, unless specified otherwise. 4.2 Arrangements for test signals The provisions of EN 301 489-1 [1], clause 4.2 shall apply with the following modifications. The wanted RF signal nominal frequency shall be selected by setting the UTRA Absolute Radio Frequency Channel Number (UARFCN) to an appropriate number. A communication link shall be set up with a suitable base station simulator (hereafter called "the test system"). The test system shall be located outside of the test environment. Where possible the test of the transmitter section and receiver section of the EUT may be carried out simultaneously to reduce test time. SIST EN 301 489-24 V1.4.1:2008

ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 9

Immunity tests shall be performed in two modes of operation: - with a communication link established (traffic mode); and - in the idle mode. When the EUT is required to be in the traffic mode, a call is set up according to the Generic call set-up procedure and the following conditions shall be met. See TS 134 108 [6] and TS 134 109 [8] Logical Test Interface for details regarding generic call set-up procedure and BER, BLER test loop scenarios: - set and send continuously Up power control commands to the UE; - the DTX shall be disabled; - Inner Loop Power Control shall be enabled; - transmitting and/or receiving (UL/DL) bit rate for reference test channel shall be 12,2 kbit/s. When the EUT is required to be in the idle mode the following conditions shall be met: - UE shall be camped on a cell; - UE shall perform Location Registration (LR) before the test, but not during the test; - UE's neighbour cell list shall be empty; - paging repetition period and DRX cycle shall be set to minimum (shortest possible time interval). Adequate measures shall be taken to avoid the effect of immunity RF test signals on the measuring equipment. 4.2.1 Arrangements for test signals at the input of transmitters The provisions of EN 301 489-1 [1], clause 4.2.1 shall apply. 4.2.2 Arrangements for test signals at the output of transmitters The provisions of EN 301 489-1 [1], clause 4.2.2 shall apply with the following modifications. Where the equipment incorporates an external 50 Ω RF antenna connector that is normally connected via a coaxial cable, then the wanted signal to establish a communication link shall be delivered from that connector by a coaxial cable. Where the equipment incorporates an external 50 Ω RF antenna connector, but this port is not normally connected via a coaxial cable, and where the equipment does not incorporate an external 50 Ω RF connector (integral antenna equipment), then the wanted signal, to establish a communication link, shall be delivered from the equipment to an antenna located within the test environment. 4.2.3 Arrangements for test signals at the input of receivers The provisions of EN 301 489-1 [1], clause 4.2.3 shall apply with the following modifications. Where the equipment incorporates an external 50 Ω RF antenna connector that is normally connected via a coaxial cable, then the wanted signal to establish a communication link shall be delivered to that connector by a coaxial cable. Where the equipment incorporates an external 50 Ω RF antenna connector, but this port is not normally connected via a coaxial cable, and where the equipment does not incorporate an external 50 Ω RF connector (integral antenna equipment), then the wanted signal, to establish a communication link, shall be presented to the equipment from an antenna located within the test environment. For immunity testing the wanted RF signal level at the input of the EUT shall be at least 40 dB above the reference sensitivity level to provide a stable communication link. The reference sensitivity level is defined in TS 125 101 [7] and TS 125 102 [12]. SIST EN 301 489-24 V1.4.1:2008

ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 10 For emission testing the wanted RF signal level at the input of the measuring receiver shall be no more than 15 dB above the reference sensitivity level, to ensure that it operates within its dynamic range. 4.2.4 Arrangements for test signals at the output of receivers The provisions of EN 301 489-1 [1], clause 4.2.4 shall apply with the following modification. The specific arrangements for test signals at the output of receivers are in annexes B and C. 4.3 Exclusion bands 4.3.1 Transmitter exclusion band In the frequency bands including in band emissions and out of band emissions are covered by the RF spectral mask specification and need no further consideration. For the purpose of EMC specifications this shall be the transmitter exclusion band: FDD bands I, III, VII, VIII Carrier Frequency ± 12,5 MHz TDD Option 3,84 Mcps Carrier Frequency ± 12,5 MHz TDD Option 1,28 Mcps Carrier Frequency ± 4,0 MHz TDD Option 7,68 Mcps Carrier Frequency ± 25,0 MHz 4.3.2 Receiver exclusion band The receiver exclusion band for terminals extends from the lower frequency of the allocated receiver band minus 85 MHz to the upper frequency of the allocated receiver band plus 85 MHz. The exclusions bands are as set out below (except for FDD Band VII, where the exclusion band begins 50 MHz below the receiver band edge): UTRA/FDD a) Band I 2 025 MHz to 2 255 MHz

b) Band III 1 720 MHz to 1 965 MHz c) Band VII 2 570 MHz to 2 775 MHz

d) Band VIII 840 MHz to 1 045 MHz UTRA/TDD 3,84 Mcps, 1,28 Mcps, 7,68 Mcps options

1 815 MHz to 2 005 MHz
1 925 MHz to 2 110 MHz

2 485 MHz to 2 705 MHz 4.4 Narrow band responses on receivers Responses on receivers or duplex transceivers occurring during the immunity tests at discrete frequencies, which are narrow band responses (spurious responses), are identified by the following method: • if during an immunity test the quantity being monitored goes outside the specified tolerances, it is necessary to establish whether the deviation is due to an unwanted effect on the receiver of the UE or on the test system (narrow band response) or to a wideband (EMC) phenomenon. Therefore, the test shall be repeated with the UARFCN increased or decreased by:

FDD bands I, III, VII, VIII and TDD option 3,84 Mcps 25 (DL/UL) SIST EN 301 489-24 V1.4.1:2008

ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 11 TDD option 1,28 Mcps

8 (DL/UL) TDD option 7,68 Mcps 50 (DL/UL); • if the deviation does not disappear, the procedure is repeated with the UARFCN increased or decreased from the original value by: FDD bands I, III, VII, VIII and TDD option 3,84 Mcps

50 (DL/UL) TDD option 1,28 Mcps

16 (DL/UL) TDD option 7,68 Mcps 100 (DL/UL); • if the deviation does not disappear with the increased and/or decreased UARFCN, the phenomenon is considered wideband and therefore an EMC problem and the equipment fails the test. Narrow band responses are disregarded. 4.5 Normal test modulation For transmission of analogue speech or audio signals (voice call mode), immunity tests shall be performed without the application of any external modulation input signal. The overall audio Uplink (UL) and Downlink (DL) performance of the radio equipment shall be calibrated before the start of the tests. The calibration procedure is explained in clause B.1. The immunity tests in the data transfer mode shall be performed with the application of an appropriate external modulation input signal such that the performance of the data call can be monitored. For assessment of the data transfer mode, refer to annex C. 5 Performance assessment 5.1 General The provision of EN 301 489-1 [1], clause 5.1 shall apply. 5.2 Equipment which can provide a continuous communication link The provision of EN 301 489-1 [1], clause 5.2 shall apply. 5.3 Equipment which does not provide a communication link The provision of EN 301 489-1 [1], clause 5.3 shall apply. 5.4 Ancillary equipment The provision of EN 301 489-1 [1], clause 5.4 shall apply with the following modification. Ancillary equipment shall be tested with it connected to a UE in which case compliance shall be demonstrated to the appropriate clauses of the present document. 5.5 Equipment classification The provision of EN 301 489-1 [1], clause 5.5 shall apply. SIST EN 301 489-24 V1.4.1:2008

ETSI ETSI EN 301 489-24 V1.4.1 (2007-09) 12 6 Performance criteria The equipment shall meet the performance criteria specified in this clause and clauses 6.1 and 6.2 as appropriate. The maintenance of a communications link shall be assessed by using an indicator, which may be part of the test system or the equipment under test. If an equipment is of a specialized nature, that the performance criteria described in the following clauses are not appropriate, then the manufacturer shall declare, for inclusion in the test report, his own specification for an acceptable level of performance or degradation of performance during and/or after testing, as required by the present document. The performance criteria specified by the manufacturer shall give the same degree of immunity protection as called for in the following cla

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