SIST EN 301 360:2002

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Satellite Earth Stations and Systems (SES); Harmonized EN for Satellite Interactive Terminals (SIT) and Satellite User Terminals (SUT) transmitting towards geostationary satellites in the 27,5 GHz to 29,5 GHz frequency bands covering essential requirements under article 3.2 of the R&TTE Directive33.060.30Radiorelejni in fiksni satelitski komunikacijski sistemiRadio relay and fixed satellite communications systemsICS:Ta slovenski standard je istoveten z:EN 301 360 Version 1.1.336IST EN 301 360:2002en01-VHSWHPEHU-20023SIST EN 301 360:2002SLOVENSKI
STANDARD
ETSI ETSI EN 301 360 V1.1.3 (2001-09)2
Reference DEN/SES-00028 Keywords earth station, BSS, FSS, satellite, regulation ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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© European Telecommunications Standards Institute 2001. All rights reserved.
ETSI ETSI EN 301 360 V1.1.3 (2001-09)3 Contents Intellectual Property Rights.6 Foreword.6 Introduction.7 1 Scope.9 2 References.10 3 Definitions, symbols and abbreviations.10 3.1 Definitions.10 3.2 Abbreviations.11 4 Technical requirements specifications.12 4.1 Environmental profile.12 4.2 Conformance requirements.12 4.2.1 General.12 4.2.2 Off-axis spurious radiation.12 4.2.2.1 Purpose.12 4.2.2.2 Specification.12 4.2.2.3 Conformance tests.13 4.2.3 On-axis spurious radiation.14 4.2.3.1 Purpose.14 4.2.3.2 Specification.14 4.2.3.2.1 "Carrier-on" state.14 4.2.3.2.2 "Carrier-off" and "Transmission disabled" state.14 4.2.3.3 Conformance tests.14 4.2.4 Off-axis EIRP emission density within the band.14 4.2.4.1 Purpose.14 4.2.4.2 Specification.15 4.2.4.3 Conformance tests.16 4.2.5 Carrier suppression.16 4.2.5.1 Purpose.16 4.2.5.2 Specification.16 4.2.5.3 Conformance tests.16 4.2.6 Antenna pointing accuracy.16 4.2.6.1 Purpose.16 4.2.6.2 Specification.17 4.2.6.3 Conformance tests.17 4.2.7 Control and Monitoring Functions (CMF).17 4.2.7.1 General.17 4.2.7.2 Processor monitoring.18 4.2.7.2.1 Purpose.18 4.2.7.2.2 Specification.19 4.2.7.2.3 Conformance tests.19 4.2.7.3 Transmit subsystem monitoring.19 4.2.7.3.1 Purpose.19 4.2.7.3.2 Specification.19 4.2.7.3.3 Conformance tests.19 4.2.7.4 Power-on/Reset.19 4.2.7.4.1 Purpose.19 4.2.7.4.2 Specification.19 4.2.7.4.3 Conformance tests.19 4.2.7.5 Control Channel (CC) reception.19 4.2.7.5.1 Purpose.19 4.2.7.5.2 Specification.20 4.2.7.5.3 Conformance tests.20 4.2.7.6 Network control commands.20 SIST EN 301 360:2002

ETSI ETSI EN 301 360 V1.1.3 (2001-09)4 4.2.7.6.1 Purpose.20 4.2.7.6.2 Specification.20 4.2.7.6.3 Conformance test.20 4.2.7.7 Initial burst transmission.20 4.2.7.7.1 Purpose.20 4.2.7.7.2 Specification.20 4.2.7.7.3 Conformance tests.21 5 Testing for compliance with technical requirements.21 5.1 Environmental conditions for testing.21 5.2 Essential radio test suites.21 6 Test method.21 6.1 General.21 6.2 Off-axis spurious radiation.22 6.2.1 Test method.22 6.2.2 Up to 1 000 MHz.22 6.2.2.1 Test site.22 6.2.2.2 Measuring receivers.23 6.2.2.3 Procedure.23 6.2.3 Above 1 000 MHz.23 6.2.3.1 Identification of the significant frequencies of spurious radiation.23 6.2.3.1.1 Test site.23 6.2.3.1.2 Procedure.24 6.2.3.2 Measurement of radiated power levels of identified spurious radiation.24 6.2.3.2.1 Test site.24 6.2.3.2.2 Procedure.24 6.2.3.3 Measurement of conducted spurious radiation at the antenna flange.25 6.2.3.3.1 Test site.25 6.2.3.3.2 Procedure.26 6.3 On-axis spurious radiation.26 6.3.1 Test method.26 6.3.1.1 Test site.26 6.3.1.2 Method of measurement.26 6.3.1.2.1 General.26 6.3.1.2.2 Method of measurement at the antenna flange.26 6.3.1.2.3 Method of measurement for an EUT with antenna.27 6.4 Off-axis EIRP emission density within the band.28 6.4.0 General.28 6.4.1 Test method.28 6.4.1.1 Transmit output power density.29 6.4.1.1.1 Test site.29 6.4.1.1.2 Method of measurement.29 6.4.1.2 Antenna transmit gain.30 6.4.1.2.1 General.30 6.4.1.2.2 Test site.30 6.4.1.2.3 Method of measurement.30 6.4.1.3 Antenna transmit radiation patterns.31 6.4.1.3.1 General.31 6.4.1.3.2 Test site.31 6.4.1.3.3 Test arrangement.32 6.4.1.3.4 Co-polar radiation pattern - azimuth.32 6.4.1.3.5 Co-polar radiation pattern - elevation.32 6.4.1.3.6 Cross-polar radiation pattern - azimuth.33 6.4.1.3.7 Cross-polar radiation pattern - elevation.33 6.4.2 Computation of results.34 6.5 Carrier suppression.34 6.5.1 Test method.34 6.6 Antenna pointing for STs.34 6.6.1 Test method.34 6.7 ST Control and Monitoring Functions (CMF).35 6.7.0 General.35 SIST EN 301 360:2002

ETSI ETSI EN 301 360 V1.1.3 (2001-09)5 6.7.1 Test arrangement.36 6.7.2 Processor monitoring - Test method.36 6.7.3 Transmit subsystem monitoring - Test method.37 6.7.4 Power-on/Reset - Test method.37 6.7.5 Control Channel (CC) reception - Test method.37 6.7.6 Network Control commands - Test method.38 6.7.7 Initial burst transmission - Test method.40 Annex A (normative): The EN Requirements Table (EN-RT).41 Annex B (informative): Pointing stability methodology.42 Annex C (informative): Bibliography.43 History.44
ETSI ETSI EN 301 360 V1.1.3 (2001-09)6 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://www.etsi.org/legal/home.htm). 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 Candidate Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee Satellite Earth Stations and Systems (SES). 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 Directive 1999/5/EC [1] 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"). Technical specifications relevant to Directive 1999/5/EC [1] are given in annex A.
National transposition dates Date of adoption of this EN: 31 August 2001 Date of latest announcement of this EN (doa): 30 November 2001 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 May 2002 Date of withdrawal of any conflicting National Standard (dow): 31 May 2003
ETSI ETSI EN 301 360 V1.1.3 (2001-09)7 Introduction ETSI has designed a modular structure for the standards. Each standard is a module in the structure. The modular structure is shown in figure 1.
New standard for Health for radio (if needed) Use of spectrum * If needed Scoped by
equipment
class or type Scoped by frequency and/or equipment type Disability* Privacy* Fraud* No harm to the network* Emergency* Interworking via
the network* Interworking with the network Non-radio Radio (RE) Non-TTE TTE 3.1b 3.2 3.3c 3.3b 3.3a 3.3d 3.3e 3.3f Radio Product EMC Existing EMC standards to be replaced by a new single multi-part standard Generic and base standards also notified under EMC Directive Standards also notified under LVD Directive ( incl
acoustic safety if needed) 3.1a New radio harmonized standards Spectrum EMC Safety
Figure 1: Modular structure for the various standards used under the R&TTE Directive SIST EN 301 360:2002

ETSI ETSI EN 301 360 V1.1.3 (2001-09)8 The left hand edge of the figure 1 shows the different clauses of article 3 of the R&TTE Directive [1].
For article 3.3 various horizontal boxes are shown. Dotted lines indicate that at the time of publication of the present document essential requirements in these areas have to be adopted by the Commission. If such essential requirements are adopted, and as far and as long as they are applicable, they will justify individual standards whose scope is likely to be specified by function or interface type. The vertical boxes show the standards under article 3.2 for the use of the radio spectrum by radio equipment. The scopes of these standards are specified either by frequency (normally in the case where frequency bands are harmonized) or by radio equipment type. For article 3.1b figure 1 shows the new single multi-part product EMC standard for radio, and the existing collection of generic and product standards currently used under the EMC Directive. The existing separate product EMC standards can be used until their dates of cessation of presumption of conformity published in the O.J.E.C. For article 3.1a figure 1 shows the existing safety standards currently used under the LV Directive and new standards covering human exposure to electromagnetic fields. New standards covering acoustic safety may also be required. The bottom of the figure shows the relationship of the standards to radio equipment and telecommunications terminal equipment. A particular equipment may be radio equipment, telecommunications terminal equipment or both. A radio spectrum standard will apply if it is radio equipment. An article 3.3 standard will apply as well only if the relevant essential requirement under the R&TTE Directive [1] is adopted by the Commission and if the equipment in question is covered by the scope of the corresponding standard. Thus, depending on the nature of the equipment, the essential requirements under the R&TTE Directive [1] may be covered in a set of standards. The modularity principle has been taken because: - it minimizes the number of standards needed. Because equipment may, in fact, have multiple interfaces and functions it is not practicable to produce a single standard for each possible combination of functions that may occur in an equipment; - it provides scope for standards to be added: • under article 3.2 when new frequency bands are agreed; or • under article 3.3 should the Commission take the necessary decisions; without requiring alteration of standards that are already published; - it clarifies, simplifies and promotes the usage of Harmonized Standards as the relevant means of conformity assessment. The present document applies to Satellite Interactive Terminals (SITs) and Satellite User Terminals (SUTs) either for individual or collective use. The present document deals with the specification defined to protect other users of the frequency spectrum, both satellite and terrestrial, from unacceptable interference. The determination of the parameters of the user earth stations using a given geostationary satellite for the protection of the spectrum allocated to that satellite, is considered to be under the responsibility of the satellite operator or the satellite network operators. The requirements have been selected to ensure an adequate level of compatibility with other radio services. The levels, however, do not cover extreme cases which may occur 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 producing individually repeated transient phenomena or a continuous phenomena is present, e.g. a radar or broadcast site in the near vicinity. In such a case it may be necessary to use special protection applied to the source of interference, or the interfered part or both. The present document does not contain any requirement, recommendation or information about the installation of SITs and SUTs. SIST EN 301 360:2002

ETSI ETSI EN 301 360 V1.1.3 (2001-09)9 1 Scope The present document applies to Satellite Interactive Terminals (SIT) and Satellite User Terminals (SUT) operating as part of a bi-directional satellite network. Satellite Terminal (ST) is used in the present document as a generic name that refers equally to a SIT and/or a SUT. In such a network a Network Control Facility (NCF) is responsible for the monitoring and control of the transmit functions of the STs. These STs have the following characteristics: • in the case of SITs reception is in the Fixed Satellite Service (FSS) frequency ranges from 10,70 GHz to 11,70 GHz and from 12,50 GHz to 12,75 GHz as well as the Broadcast Satellite Service (BSS) frequency range from 11,70 GHz to 12,50 GHz; • in the case of SUTs reception is in the Fixed Satellite Service (FSS) frequency ranges from 19,70 GHz to 20,20 GHz and from 17,70 GHz to 19,70 GHz as well as the Broadcast Satellite Service (BSS) frequency range from 21,40 GHz to 22,00 GHz; • in all cases ST transmission is in the frequency band allocated to FSS from 27,50 GHz to 29,50 GHz; •
STs transmit towards geostationary satellites with spacing down to 2° away from any other geostationary satellite operating in the same frequency band and covering the same area; •
linear or circular polarization is used for transmission or reception; •
the received signals may be analogue and/or digital; •
the transmitted signals are always of digital nature; •
the ST antenna diameter does not exceed 1,8 m, or equivalent corresponding aperture; •
the ST is designed for unattended operations. The equipment considered in the present document comprises both the outdoor unit, usually composed of the antenna subsystem and associated upconverter, power amplifier and Low Noise Block (LNB) downconverter, and the indoor unit, usually composed of receive and transmit logic as well as the modulator, including cables between these two units. The present document applies to the ST with its ancillary equipment and its various ports and when operated within the boundary limits of all the operational environmental profile declared by the applicant and when installed as required by the applicant by declaration or in the user documentation. All parts of the indoor unit related to reception, processing and presentation of the received information except the control channel are not within the scope of the present document. The syntax of the control channel messages is outside the scope of the present document. The present document is intended to cover the provisions of Directive 1999/5/EC [1] (R&TTE Directive) article 3.2, which states that "… radio equipment shall be so constructed that it effectively uses the spectrum allocated to terrestrial/space radio communications and orbital resources so as to avoid harmful interference". In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of article 3 of the R&TTE Directive [1] may apply to equipment within the scope of the present document. NOTE: A list of such ENs is included on the web site http://www.newapproach.org/. SIST EN 301 360:2002

ETSI ETSI EN 301 360 V1.1.3 (2001-09)10 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, edition number, version number, etc.) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. [1] 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. [2] CISPR 16-1: "Specification for radio disturbance and immunity measuring apparatus and methods Part 1: Radio disturbance and immunity measuring apparatus". [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. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purpose of the present document, the terms and definitions given in the R&TTE Directive [1], and the following apply: ancillary equipment: equipment used in connection with a ST is considered as ancillary if the three following conditions are meet: a) the equipment is intended for use in conjunction with the ST to provide additional operational and/or control features; and b) the equipment can not be used on a stand alone basis, to provide user functions independently of the ST; and c) the absence of the equipment does not inhibit the operation of the ST. applicant: manufacturer or his authorized representative within the European Community or the person responsible for placing the apparatus on the market carrier-off state: a ST is in this state when it is authorized by the Network Control Facility (NCF) to transmit, but when it does not transmit any signal NOTE 1: The existence of a carrier-off state depends on the system of transmission used. For STs designed for continuous transmission mode there may be no carrier-off state. carrier-on state: a ST is in this state when it is authorized by the NCF to transmit and when it transmits a signal in a continuous or non-continuous mode Control Channel (CC): channel or channels by which STs receive control information from the NCF for their network. Typically the CC(s) is/are carried via the same or collocated satellite as used for transmission of user data and within the internal protocol structure of the broadcast system EIRPmax: maximum EIRP capability of the ST as declared by the applicant SIST EN 301 360:2002

ETSI ETSI EN 301 360 V1.1.3 (2001-09)11 EIRPnom: either
i. EIRPmax; ii. or, when uplink power control is implemented, the maximum required EIRP of the ST under clear sky condition as declared by the applicant environmental profile: range of environmental conditions under which equipment within the scope of the present document is required to comply with the provisions of the present document indoor unit: it is composed of that part of the ST which is not part of the outdoor unit. It is generally installed inside a building and is connected to the outdoor unit integral antenna: antenna which may not be removed during the tests according to the applicant's statement nominated bandwidth: bandwidth of the ST radio frequency transmission is nominated by the applicant. The nominated bandwidth does not exceed 5 times the occupied bandwidth NOTE 2: The nominated bandwidth is wide enough to encompass all spectral elements of the transmission which have a level greater than the specified spurious radiation limits. The nominated bandwidth is wide enough to take account of the transmit carrier frequency stability. This definition is chosen to allow flexibility regarding adjacent channel interference levels which will be taken into account by operational procedures depending on the exact transponder carrier assignment situation. occupied bandwidth: width of the signal spectrum 10 dB below the maximum inband density outdoor unit: part of the ST intended to be installed outdoor, as declared by the applicant, or as indicated in the user documentation The outdoor unit usually comprises of three main parts: a) the antenna sub-system which converts the incident radiation field into a guided wave and vice versa; b) the Low Noise Block (LNB) downconverter, which is a device that amplifies, with very low internal noise, the received signals in the Radio Frequency (RF) band and converts them to Intermediate Frequencies (IF); c) the upconverter and the power amplifier which convert from the IF to RF and amplify the low level RF signals for transmission through the antenna subsystem. NOTE 3: The installation equipment is outside the scope of the present document. However, the antenna structures and other components directly mounted on the antenna and forming an integral part of it, are subject to the specifications of the present document. removable antenna: antenna which may be removed during the tests according to the applicant's statement spurious radiation: any radiation outside the nominated bandwidth transmission disabled state: ST is in this state when it is not authorized by the NCF to transmit 3.2 Abbreviations For the purpose of the present document, the following abbreviations apply: CC Control Channel CCF Control Channel Reception Failure CCR Control Channel correctly Received CDMA Code Division Multiple Access CISPR Comité International Spécial des Perturbations Radioélectriques (International Special Committee on Radio Interference) CMF Control and Monitoring Functions EIRP Equivalent Isotropically Radiated Power EUT Equipment Under Test FEC Forward Error Correction FSS Fixed Satellite Service SIST EN 301 360:2002

ETSI ETSI EN 301 360 V1.1.3 (2001-09)12 GSO Geostationary Satellite Orbit IF Intermediate Frequencies LNB Low Noise Block downconverter LO Local Oscillator NCF Network Control Facility R&TTE Radio and Telecommunications Terminal Equipment RF Radio Frequency SIT Satellite Interactive Terminal SMF System Monitoring Fail SMP System Monitoring Pass ST Satellite Terminal STE Special Test Equipment SUT Satellite User Terminal TDMA Time Division Multiple Access TxD Transmission Disable command TxE Transmission Enable command 4 Technical requirements specifications 4.1 Environmental profile The technical requirements of the present document apply under the environmental profile for operation of the equipment, which shall be declared by the applicant. 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. The environmental profile for operation of the equipment shall include the ranges of humidity, temperature and supply voltage. 4.2 Conformance requirements 4.2.1 General Under operational conditions a ST may dynamically change the occupied bandwidth of the transmitted signal. For each occupied bandwidth an EIRPmax, an EIRPnom and a nominated bandwidth shall be declared by the applicant. The following specifications apply to the ST for each occupied bandwidth. 4.2.2 Off-axis spurious radiation 4.2.2.1 Purpose To limit the level of interference to terrestrial and satellite radio services. 4.2.2.2 Specification The following specifications apply to the ST transmitting at EIRP values up to and including EIRPmax. 1) The ST shall not exceed the limits for radiated interference field strength over the frequency range from 30 MHz to 1 000 MHz specified in table 1. Table 1: Limits of radiated field strength at a test distance of 10 m in a 120 kHz bandwidth Frequency range (MHz) Quasi-peak limits (dBµV/m) 30 MHz to 230 MHz 30 230 MHz to 1 000 MHz 37 SIST EN 301 360:2002

ETSI ETSI EN 301 360 V1.1.3 (2001-09)13
The lower limits shall apply at the transition frequency. 2) When the ST is in the "Transmission disabled" state, the off-axis spurious radiation from the ST, in any 100 kHz band, shall not exceed the limits in table 2, for all off-axis angles greater than 7°. Table 2: Limits of spurious radiation - "Transmission disabled" state Frequency band EIRP limit (dBpW) 1,0 GHz to 2,0 GHz 42 2,0 GHz to 10,7 GHz 48 10,7 GHz to 21,2 GHz 54 21,2 GHz to 40 GHz 60
The lower limits shall apply at the transition frequency. 3) The present document applies outside the nominated bandwidth. For both the "Carrier-on" and "Carrier-off" states, the off-axis EIRP of spurious radiation in the specified measurement bandwidth from the ST, shall not exceed the limits in table 3, for all off-axis angles greater than 7°. Table 3: Limits of spurious radiation Frequency band EIRP limit (dBpW) Measurement bandwidth 1,0 GHz to 2,0 GHz 43 100 kHz 2,0 GHz to 3,4 GHz 49 100 kHz 3,4 GHz to 10,7 GHz 55 100 kHz 10,7 GHz to 21,2 GHz 61 100 kHz 21,2 GHz to 27,35 GHz 67 100 kHz 27,35 GHz to 27,50 GHz 85 (see note 1) 1 MHz 27,50 GHz to 29,50 GHz 85 (see notes 1and 2) 1 MHz 30,00 GHz to 30,15 GHz 85 (see note 1) 1 MHz 30,15 GHz to 40,00 GHz 67 100 kHz NOTE 1: This limit may be exceeded in a frequency band which shall not exceed 50 MHz, centred on the carrier frequency, provided that the on-axis EIRP density measured in 100 kHz at the frequency of the considered spurious is 50 dB below the maximum on-axis EIRP density of the signal measured in 100 kHz. NOTE 2: This limit may not apply in frequency bands exclusively designated to FSS in regions where those bands have been adopted.
The lower limits shall apply at the transition frequency.
In the frequency band of 21,2 GHz to 27,35 GHz, for any 20 MHz band within which one or more spurious signals exceeding 67 dBpW/100 kHz are present, then the power of each of those signals exceeding the limit shall be added in Watts, and the sum shall not exceed 75 dBpW.
For STs designed to transmit simultaneously several different carriers (multicarrier operation), the above limits apply to each individual carrier when transmitted alone. 4) These limits are applicable to the complete ST equipment, comprising of the indoor and outdoor units with at least 10 m of cable connecting them. 4.2.2.3 Conformance tests Conformance tests shall be carried out in accordance with clause 6.2. SIST EN 301 360:2002

ETSI ETSI EN 301 360 V1.1.3 (2001-09)14 4.2.3 On-axis spurious radiation 4.2.3.1 Purpose To limit the level of interference to satellite radio services. 4.2.3.2 Specification 4.2.3.2.1 "Carrier-on" state The following specification applies to the ST transmitting at EIRP values up to EIRPnom. For EIRPs above EIRPnom (when uplink power control is implemented) the limits below may be exceeded by the difference in dB between the current EIRP and EIRPnom. In the 27,5 GHz to 29,5 GHz band the EIRP spectral density of the spurious radiation outside the nominated bandwidth shall not exceed 4 - 10 log M dBW in any 100 kHz band. In any 20 MHz within one or more spurious signals exceeding 4 dBW/100 kHz are present, then the power of each of those signals exceeding the limits shall be added in Watts, and the sum shall not exceed 10 dBW.
NOTE 1: Some satellite operators may require more stringent limits. In a bandwidth of 5 times the occupied bandwidth centred on the carrier centre frequency, the EIRP spectral density of the spurious radiation outside the nominated bandwidth, shall not exceed 18 - 10 log M dBW in any 100 kHz band. M is the maximum number of STs which are expected to transmit simultaneously in the same carrier frequency band. This number shall not be exceeded for more than 0,01 % of the time. The value of M and the operational conditions of the system shall be declared by the applicant. NOTE 2: The on-axis spurious radiation, outside the 27,5 GHz to 29,5 GHz band, are indirectly limited by clause 4.2.2.2. Consequently no specification is needed. NOTE 3: Intermodulation limits inside the band 27,5 GHz to 29,5 GHz are to be determined by system design and are subject to satellite operator specifications. For ST designed to transmit simultaneously several different carriers (multicarrier operation), the above limits only apply to each individual carrier when transmitted alone. 4.2.3.2.2 "Carrier-off" and "Transmission disabled" state In the 27,5 GHz to 29,5 GHz band the EIRP spectral density of the spurious radiation outside the nominated bandwidth shall not exceed -21 dBW in any 100 kHz band. NOTE: Some satellite operators may require more stringent limits. 4.2.3.3 Conformance tests Conformance tests shall be carried out in accordance with clause 6.3. 4.2.4 Off-axis EIRP emission density within the band 4.2.4.1 Purpose Protection of other satellite (
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