SIST EN 300 832:2000
(Main)Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) for Mobile Earth Stations (MES) providing Low Bit Rate Data Communications (LBRDC) using satellites in Low Earth Orbits (LEO) operating in frequency bands below 1 GHz
- Abstract
This ETS together with ETS 300 721 covers the assessment of mobile earth stations providing Low Bit Rate Data Communications (LBRDC) using satellites in Low Earth Orbit (LEO) and operating below 1 GHz and may be used to demonstrate presumption of compliance with the protection requirements of the EMC Directive.
- Status
- Published
- Publication Date
- 31-Mar-2000
- Technical Committee
- RES - Radio equipment and systems
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Apr-2000
- Due Date
- 01-Apr-2000
- Completion Date
- 01-Apr-2000
- Mandate
- T-353
SIST EN 300 832:2000 is the Slovenian adoption of ETSI EN 300 832 V1.1.1, a European telecommunications standard for electromagnetic compatibility of Mobile Earth Stations (MES) providing Low Bit Rate Data Communications (LBRDC) using satellites in Low Earth Orbits (LEO) below 1 GHz. It specifies the EMC tests, test methods, limits and minimum performance criteria used to assess these MESs and their ancillary equipment for compliance work and market access.
What does SIST EN 300 832:2000 specify?
SIST EN 300 832:2000 covers the EMC assessment of MESs and ancillary equipment that provide LBRDC through LEO satellites and operate below 1 GHz. The scope says it may be used, together with ETS 300 721, to demonstrate presumption of compliance with the EMC Directive protection requirements.
The document focuses on EMC testing for the equipment as a whole, including emissions and immunity, but leaves antenna-port technical specifications and product-specific enclosure-port emission requirements to the relevant product standard. It also sets an environment basis aimed at residential, commercial, light industrial and vehicular use.
| Annex | What it covers |
|---|---|
| Annex A (normative) | Subclauses relevant to compliance with the essential requirements of the EMC Directive |
| Annex B (normative) | Definitions of the MES within scope, including the MSS frequency bands below 1 GHz |
| Annex C (informative) | Bibliography |
The main body is organized into scope, references, definitions and abbreviations, general test conditions, performance assessment, performance criteria, applicability overview tables, emission test methods and limits, and immunity test methods and levels.
What are the key requirements of SIST EN 300 832:2000?
The most important requirement is that the applicant must declare the intended use, equipment classification, ports, ancillary equipment or host equipment, and the method used to judge transmission quality, and record that information in the test report. In practice, this is what makes the test setup traceable and repeatable.
Equipment classification and configuration
SIST EN 300 832:2000 classifies MESs as Vehicle mounted MES (V-MES), Portable MES (P-MES) or Fixed MES (F-MES). V-MES is treated as Installable Equipment (IE), and P-MES as Portable Equipment (PE). This classification matters because it drives which ports and environmental tests apply.
For MES parts that need a host equipment to provide full functionality, the applicant chooses either combined-equipment testing or a representative test jig. That choice matters because it defines whether one host combination can support wider declarations or whether additional combinations need separate emission testing.
General test conditions and exclusion bands
SIST EN 300 832:2000 requires test configurations to be close to normal intended use, within the declared ranges of humidity, temperature and supply voltage. Integral antennas are tested fitted as normally used, and separate voltage converters are treated as part of the EUT if they are physically separated.
The document also defines exclusion bands where immunity tests are not performed. The transmitter exclusion band is based on twice the occupied bandwidth around the centre frequency, and the receiver exclusion band is ±5 % of the operating frequency. This prevents testing where the wanted RF signal would be disturbed by the test itself.
Performance criteria
The standard uses the maintenance of the communications link and the quality of transmission as the main pass/fail basis. For Continuous Phenomena (CP), the link must stay up during exposure and the observed quality must be no worse than declared. For Transient Phenomena (TP), the link and declared quality are checked after each exposure and at the end of the full sequence. The transmitter must never operate unintentionally.
Emission tests
Emission testing covers the enclosure of ancillary equipment, DC power input/output ports, and AC mains power input/output ports. SIST EN 300 832:2000 uses EN 55022 and CISPR 16-1 methods for these checks, with limits given in the emission tables. In practice, the applicant must show that the equipment does not put excessive conducted or radiated noise onto its ports.
Immunity tests
Immunity testing includes radiated RF fields from 80 MHz to 1 000 MHz, electrostatic discharge, fast transients, RF common mode disturbance from 0.15 MHz to 80 MHz, vehicular transients and surges for 12 V and 24 V DC equipment, voltage dips and interruptions on AC mains, and surges on AC mains. The exact test method references EN 61000-4-2, -3, -4, -5, -6 and -11, plus ISO 7637-1 and ISO 7637-2 for vehicular supply conditions.
What terms does SIST EN 300 832:2000 define?
- Mobile Earth Station (MES) - A terminal within the scope of the standard that communicates through LEO satellites for LBRDC below 1 GHz.
- Ancillary equipment - Equipment used with a MES to add control or operating features, but not able to provide MES user functions on its own.
- Host equipment - Equipment that already has complete user functionality by itself and to which a MES is connected to add functionality.
- Equipment Under Test (EUT) - The MES in the selected test configuration, including the chosen ancillary equipment.
- Continuous Phenomena (CP) - Disturbance conditions where the standard expects the communications link to remain maintained during exposure.
- Transient Phenomena (TP) - Disturbance conditions checked after each exposure or sequence, with the link and declared quality re-verified afterward.
- carrier-on state - The MES state when it is transmitting a signal, either continuously or non-continuously.
- carrier-off - The MES state when it is not transmitting a signal.
Who uses SIST EN 300 832:2000?
SIST EN 300 832:2000 is used by MES manufacturers, their authorized representatives, equipment suppliers to the European market, and test laboratories that perform EMC verification. It is also relevant to approval bodies and quality managers who need a clear basis for product assessment.
In practice, it is used for design validation, pre-compliance testing, formal EMC testing, and preparing the technical evidence used for market access under the EMC Directive. It is especially relevant for satellite terminal products intended for residential, commercial, light industrial or vehicular environments.
Which standards are used with SIST EN 300 832:2000?
The document refers to ETS 300 721 as the companion standard that defines the MES product scope for LBRDC using LEO satellites below 1 GHz. It also relies on EN 50081-1 and EN 50082-1 for the generic emission and immunity framework.
For testing, SIST EN 300 832:2000 uses EN 55022 and CISPR 16-1 for emission measurement practice, EN 61000-4-2, -4-3, -4-4, -4-5, -4-6 and -4-11 for immunity methods, and ISO 7637-1 and ISO 7637-2 for vehicular transient conditions. The scope also notes EN 61000-3-2 and EN 61000-3-3 as harmonized EMC standards that may apply in their own right.
What does the SIST EN 300 832:2000 document contain?
The document contains applicability overview tables that map each port and equipment class to the relevant emission and immunity tests. It also gives the test configurations, including how to arrange the MES, ancillary equipment, host equipment, RF connections and test signals.
The emission section provides methods and limits for enclosure, DC port and AC mains port measurements, while the immunity section provides methods, levels and pass criteria for RF fields, ESD, fast transients, RF common mode, vehicular transients, voltage dips and surges. Annex A links the technical clauses to the EMC Directive, Annex B defines the in-scope MES frequency bands, and Annex C lists background references.
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Frequently Asked Questions
SIST EN 300 832:2000 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) for Mobile Earth Stations (MES) providing Low Bit Rate Data Communications (LBRDC) using satellites in Low Earth Orbits (LEO) operating in frequency bands below 1 GHz". This standard covers: This ETS together with ETS 300 721 covers the assessment of mobile earth stations providing Low Bit Rate Data Communications (LBRDC) using satellites in Low Earth Orbit (LEO) and operating below 1 GHz and may be used to demonstrate presumption of compliance with the protection requirements of the EMC Directive.
This ETS together with ETS 300 721 covers the assessment of mobile earth stations providing Low Bit Rate Data Communications (LBRDC) using satellites in Low Earth Orbit (LEO) and operating below 1 GHz and may be used to demonstrate presumption of compliance with the protection requirements of the EMC Directive.
SIST EN 300 832:2000 is classified under the following ICS (International Classification for Standards) categories: 33.060.30 - Radio relay and fixed satellite communications systems; 33.070.01 - Mobile services in general; 33.100.01 - Electromagnetic compatibility in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 832:2000 is associated with the following European legislation: Standardization Mandates: T-353. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 300 832:2000 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) for Mobile Earth Stations (MES) providing Low Bit Rate Data Communications (LBRDC) using satellites in Low Earth Orbits (LEO) operating in frequency bands below 1 GHz33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.070.01Mobilni servisi na splošnoMobile services in general33.060.30Radiorelejni in fiksni satelitski komunikacijski sistemiRadio relay and fixed satellite communications systemsICS:Ta slovenski standard je istoveten z:EN 300 832 Version 1.1.1SIST EN 300 832:2000en01-april-2000SIST EN 300 832:2000SLOVENSKI
STANDARD
European Telecommunications Standards Institute EN 300 832 V1.1.1 (1998-03)European Standard (Telecommunications series)Electromagnetic compatibilityand Radio spectrum Matters (ERM);ElectroMagnetic Compatibility (EMC)for Mobile Earth Stations (MES) providingLow Bit Rate Data Communications (LBRDC)using satellites in Low Earth Orbits (LEO)operating in frequency bands below 1 GHzSIST EN 300 832:2000
EN 300 832 V1.1.1 (1998-03)2ReferenceDEN/ERM-EMC-026 (7pc00ico.PDF)KeywordsEarth station, EMC, MES, mobile, MSS, radio,satelliteETSI SecretariatPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frhttp://www.etsi.frhttp://www.etsi.orgCopyright NotificationNo 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 1998.All rights reserved.SIST EN 300 832:2000
EN 300 832 V1.1.1 (1998-03)3ContentsIntellectual Property Rights.5Foreword.51Scope.62References.63Definitions and abbreviations.73.1Definitions.73.2Abbreviations.84General test conditions.94.1Test conditions.94.2Arrangements for tests.94.3RF connection of test signals.104.4Exclusion band.104.4.1Transmitter exclusion band.104.4.2 Receiver exclusion bands.105Performance assessment.105.1General information to be provided by the applicant.105.2Equipment classification.115.3Ancillary equipment.115.4MES connected to host equipment.115.4.1Alternative A: combined equipment.115.4.2Alternative B: use of a test jig.125.5Equipment configuration(s).126Performance criteria.136.1General.136.2Performance criteria for Continuous Phenomena (CP).136.3Performance criteria for Transient Phenomena (TP).137Applicability overview tables.147.1Emission.147.2Immunity.148Test methods and limits for emission tests of EUT.148.1Test Configuration.148.2Ancillary equipment enclosure.158.2.1Purpose.158.2.2Test method.158.2.3Test limit.158.3DC power input/output port.158.3.1Purpose.168.3.2Test method.168.3.3Test limit.168.4AC mains power input/output port.168.4.1Purpose.168.4.2Test method.168.4.3Test limit.169Test methods and levels for immunity tests for EUT.179.1Test configuration.179.2Radio frequency electromagnetic field (80 MHz - 1 000 MHz).179.2.1Purpose.179.2.2Test method and level.189.2.3Performance criteria.189.3Electrostatic discharge.18SIST EN 300 832:2000
EN 300 832 V1.1.1 (1998-03)49.3.1Purpose.189.3.2Test method and levels.189.3.3Performance criteria.189.4Fast transients common mode.189.4.1Purpose.189.4.2Test method and levels.189.4.3Performance criteria.199.5RF common mode (0,15 MHz - 80 MHz).199.5.1Purpose.199.5.2Test method and level.199.5.3Performance criteria.199.6Transients and surges, vehicular environment.209.6.1Purpose.209.6.2Test method and level.209.6.3Performance criteria.219.7Voltage dips and interruptions.219.7.1Purpose.219.7.2Test method and levels.219.7.3Performance criteria.219.8Surges, common and differential mode.219.8.1Purpose.219.8.2Test method and levels.229.8.3Performance criteria.22Annex A (normative):Subclauses of the present document relevant for compliance with theessential requirements of relevant EC Council Directives.23Annex B (normative):Definitions of the MES within the scope of the present document.24B.1MESs operating below 1 GHz.24Annex C (informative):Bibliography.25History.26SIST EN 300 832:2000
EN 300 832 V1.1.1 (1998-03)5Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin ETR 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect ofETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSIWeb server (http://www.etsi.fr/ipr).Pursuant to the ETSI Interim IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. Noguarantee can be given as to the existence of other IPRs not referenced in ETR 314 (or the updates onhttp://www.etsi.fr/ipr) which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by ETSI Technical CommitteeElectromagnetic compatibility and Radio spectrum Matters (ERM).The present document is based upon the Generic Standards EN 50081-1 [1] and EN 50082-1 [2]. Other standards coverradio communications equipment not listed in the scope of the present document.The present document has been produced by ETSI in response to a mandate from the European Commission issuedunder Council Directive 83/189/EEC (as amended) laying down a procedure for the provision of information in the fieldof technical standards and regulations.The present document, together with ETS 300 721, is intended to become a Harmonized Standard, the reference ofwhich will be published in the Official Journal of the European Communities referencing the Council Directive on theapproximation of the laws of the Member States relating to electromagnetic compatibility ("the EMC Directive")(89/336/EEC as amended).Technical specifications relevant to the EMC Directive are given in annex A.National transposition datesDate of adoption of this EN:6 February 1998Date of latest announcement of this EN (doa):31 May 1998Date of latest publication of new National Standardor endorsement of this EN (dop/e):30 November 1998Date of withdrawal of any conflicting National Standard (dow):30 November 1998SIST EN 300 832:2000
EN 300 832 V1.1.1 (1998-03)61ScopeThe present document covers the assessment of Mobile Earth Stations (MESs) and ancillary equipment in respect ofElectroMagnetic Compatibility (EMC).Technical specifications related to the antenna port and emissions from the enclosure port of the equipment are notincluded in the present document. Such specific technical specifications are found in the relevant product standard.The present document specifies the applicable EMC tests, the test methods, the limits and the minimum performancecriteria for MESs providing Low Bit Rate Data Communications (LBRDC) using satellites in Low Earth Orbit (LEO)and operating in frequency bands below 1 GHz, as defined in ETS 300 721 [3], and ancillary equipment.In addition to the technical specification of the present document, there may be published in the Official Journal of theEuropean Communities (OJEC) references to Harmonized EMC standards that apply to the products covered by thepresent document in their own right, for example, EN 61000-3-2 and EN 61000-3-3 (power frequency harmonics andvoltage fluctuation).The environment classification used in the present document refers to the environment classification used in the GenericStandards EN 50081-1 [1] and EN 50082-1 [2], except the vehicular environment class which refers to ISO 7637-1 [4]and ISO 7637-2 [5].The EMC requirements have been selected to ensure an adequate level of compatibility for apparatus at residential,commercial, light industrial and vehicular environments. The levels, however, do not cover extreme cases which mayoccur in any location but with a low probability of occurrence.The present document may not cover those cases where a potential source of interference, which is producingindividually repeated transient phenomena, or a continuous phenomenon, is permanently present, e.g. a radar orbroadcast site in the near vicinity. In such a case it may be necessary to use special protection applied to either thesource of interference, or the interfered part, or both.Compliance of a MES to the requirements of the present document does not signify compliance to any requirementsrelated to the use of the equipment (i.e. licensing requirements).The present document is based on the considerations and guidance given in ETR 238 [14].2ReferencesReferences may be made to:a)specific versions of publications (identified by date of publication, edition number, version number, etc.), inwhich case, subsequent revisions to the referenced document do not apply; orb)all versions up to and including the identified version (identified by "up to and including" before the versionidentity); orc)all versions subsequent to and including the identified version (identified by "onwards" following the versionidentity); ord)publications without mention of a specific version, in which case the latest version applies.A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.[1]EN 50081-1 (1992): "Electromagnetic compatibility - Generic emission standard - Part 1:Residential, commercial and light industry".[2]EN 50082-1 (1993): "Electromagnetic compatibility - Generic immunity standard - Part 1:Residential, commercial and light industry".SIST EN 300 832:2000
EN 300 832 V1.1.1 (1998-03)7[3]ETS 300 721: " Satellite Earth Stations and Systems (SES); MES providing Low Bit Rate DataCommunications (LBRDC) using LEO satellites operating below 1 GHz".[4]ISO 7637-1 (1990): "Road vehicles - Electrical disturbance by conduction and coupling - Part 1:Passenger cars and light commercial vehicles with nominal 12 V supply voltage - Electricaltransient conduction along supply lines only".[5]ISO 7637-2 (1990): "Road vehicles - Electrical disturbance by conduction and coupling - Part 2:Commercial vehicles with nominal 24 V supply voltage - Electrical transient conduction alongsupply lines only".[6]EN 55022 (1994): "Limits and methods of measurement of radio disturbance characteristics ofinformation technology equipment".[7]CISPR 16-1: "Specification for radio disturbance and immunity measuring apparatus and methods- Part 1: Radio disturbance and immunity measuring apparatus".[8]EN 61000-4-3 (modified): "Electromagnetic compatibility (EMC) - Part 4: Testing andmeasurement techniques - Section 3: Radiated, radio-frequency, electromagnetic field immunitytest".[9]EN 61000-4-2: "Electromagnetic compatibility (EMC) - Part 4: Testing and measurementtechniques - Section 2: Electrostatic discharge immunity test".[10]EN 61000-4-4: "Electromagnetic compatibility (EMC) - Part 4: Testing and measurementtechniques - Section 4: Electrical fast transient/burst immunity test".[11]EN 61000-4-6: "Electromagnetic compatibility (EMC) - Part 4: Testing and measurementtechniques - Section 6: Immunity to conducted disturbances, induced by radio-frequency fields".[12]EN 61000-4-11: "Electromagnetic compatibility (EMC) - Part 4: Testing and measurementtechniques - Section 11: Voltage dips, short interruptions and voltage variations immunity tests".[13]EN 61000-4-5: "Electromagnetic compatibility (EMC) - Part 4: Testing and measurementtechniques - Section 5: Surge immunity test".[14]ETR 238: "ETSI/CENELEC standardization programme for the development of HarmonizedStandards related to Electro-Magnetic Compatibility (EMC) in the field of telecommunications".[15]89/336/EEC: "Council Directive on the approximation of the laws of the Member States relating toelectromagnetic compatibility".[16]ITU Radio Regulations.3Definitions and abbreviations3.1DefinitionsFor the purposes of the present document, the following definitions apply:ancillary equipment: Equipment (apparatus), where used in connection with a MES is considered as an ancillaryequipment (apparatus) if:-the equipment is intended for use in conjunction with a MES to provide additional operational and/or controlfeatures to the MES (e.g. to extend control to another position or location); and-the equipment cannot be used on a stand alone basis to provide MES user functions independently of a MES; and-the absence of the ancillary equipment does not inhibit the operation of the MES.applicant: A party seeking an approval, or to place an MES on the European market, i.e. the manufacturer of theequipment, or his authorized representative, or an equipment supplier to the European market.SIST EN 300 832:2000
EN 300 832 V1.1.1 (1998-03)8carrier-on state: An MES is in this state when it is transmitting a signal in a continuous or non-continuous mode.carrier-off: An MES is in this state when it is not transmitting a signal, i.e. not in the carrier on state.enclosure port: The physical boundary of the apparatus through which an electromagnetic field may radiate or impinge(see figure 1).host equipment: Any equipment which has complete user functionality when not connected to the MES, and to whichconnection is necessary for the MES to offer additional functionality.Installable Equipment (IE), Internally Mounted Equipment (IME) and Externally Mounted Equipment (EME):An Installable Equipment (IE) is an equipment which is intended to be installed in a vehicle. An IE may consist of oneor several modules. The IE is composed of modules intended to be externally mounted and declared by the applicant asExternally Mounted Equipment (EME). The remaining module(s) are defined as Internally Mounted Equipment (IME).integral antenna: An antenna which may not be removed during the tests, according to the applicant statement.occupied bandwidth: See ITU Radio Regulations [16], Part A, Chapter 1, Terminology RR 147.port: A particular interface of the specified equipment (apparatus) with the electromagnetic environment (see figure 1).APPARATUSEnclosure portAC power portDC power portEarth portSignal / control portAntenna portsFigure: 1 Examples of portsportable equipment: A Portable Equipment (PE) is generally intended to be self-contained, free standing and portable.A PE would normally consist of a single module, but may consist of several interconnected modules.NOTE:More than one of the equipment classifications can apply to certain equipment, as described insubclause 5.2, dependent upon the applicant's declaration of normal intended use.removable antenna: An antenna which may be removed for the test according to the applicant statement.3.2AbbreviationsFor the purposes of the present document, the following abbreviations apply:BERBit Error RatioCMFControl and Monitoring FunctionsCPContinuous PhenomenaEIRPEquivalent Isotropically Radiated PowerEMCElectroMagnetic CompatibilityEMEExternally Mounted EquipmentEUTEquipment Under TestF-MESFixed MESIEInstallable EquipmentIMEInternally Mounted EquipmentLBRDCLow Bit Rate Data CommunicationLEOLow Earth OrbitLISNLine Impedance Stabilizing NetworkMESMobile Earth StationMSSMobile Satellite ServiceNCFNetwork Control FacilitiesOJECOfficial Journal of the European CommissionPEPortable EquipmentSIST EN 300 832:2000
EN 300 832 V1.1.1 (1998-03)9PEPPeak Envelope PowerP-MESPortable MESQTMAQuality of Transmission Measurement ApparatusRFRadio Frequencyrmsroot mean squareSTESpecial Test EquipmentTPTransient PhenomenaV-MESVehicle mounted MES4General test conditions4.1Test conditionsFor Mobile Earth Stations (MESs) with ancillary equipment and/or various ports, the number of test configurations shallbe determined. The assessment shall include sufficient representative configurations of the MES to adequately exercisethe equipment. These configurations shall be recorded in the test report.In the following clauses, the Equipment Under Test (EUT) is the MES with the selected configuration of ancillaryequipment.The equipment shall be tested under conditions which are within the applicant's declared range of humidity,temperature, and supply voltage.The EUT operational frequencies used during the test shall be recorded in the test report.The test conditions shall be recorded in the test report.The test configuration shall be as close to normal intended use as possible, and shall be recorded in the test report.For testing and if physically separated from the MES, any voltage converter, shall form part of the EUT.Whenever the Equipment Under Test (EUT) is provided with an integral antenna, the EUT shall be tested with theantenna fitted in a manner typical of normal intended use.For MES for which connection to a host equipment is necessary to offer additional functionality, the test configurationshall be as defined in subclause 5.4.4.2Arrangements for testsIn order to measure the system emission and electromagnetic immunity under operational conditions, properarrangements have to be provided (by the applicant) e.g.:a)a Special Test Equipment (STE) to put the MES terminal in its normal operating mode, and providing the MESwith a receive signal to emulate the operational conditions of reception. This equipment shall control the EUT,when it is capable of transmission, so that it switches between the carrier-on and carrier-off states;b)a specific Quality of Transmission Measurement Apparatus (QTMA).EXAMPLE:The quality of transmission can concern:- the Bit Error Ratio (BER);- the message throughput;- the continuity of the communication link; or- a combination of them.SIST EN 300 832:2000
EN 300 832 V1.1.1 (1998-03)10For the measurement of the quality of transmission, a communications link shall be established and the wanted inputsignal shall be applied to the Radio Frequency (RF) input of the receiver. Signal level adjustment may be performed byadjustment of the test transmitter output level such that the received signal level is as close to the normal operationsignal level as possible. This signal level should be sufficient to avoid the broad band noise from the power amplifiers,generating the EMC disturbance, from influencing the measurement.Adequate measures shall be taken to avoid the effects of the unwanted signal on the measuring equipment.The STE, the QTMA and the source of the wanted input signal shall be located outside the test environment. Adequatemeasures shall be taken to protect them from the effects of all the radiated fields within the test environment.For the quality of transmission measurement, the MES may be put in a specific mode for that test where the receiveddata are looped back to the transmitter.4.3RF connection of test signalsWhere the equipment incorporates an external antenna connector and when agreed by the applicant, the antenna shall beremoved and the wanted signal to establish communications shall be delivered through that connector by a coaxial cable.Adequate measures shall be taken to minimize the effect of unwanted currents on the external conductor of the coaxialcable at the point of entry to the equipment. Adequate measures shall also be taken to avoid the effect of the unwantedsignal on the measuring equipment.Where the equipment incorporates an external antenna connector, the applicant may consider it as an integral antennafor the purpose of this test.The test system shall be located outside of the test
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