Abstract

The present document applies to Very Small Aperture Terminals (VSATs) which have the following characteristics:
The VSAT is operating in one or more frequency ranges in the part of the following bands allocated
exclusively to the Fixed Satellite Services (FSS):
- 14,00 GHz to 14,25 GHz (earth-to-space);
- 12,50 GHz to 12,75 GHz (space-to-earth);
or in the shared parts of the following bands, allocated to the FSS and Fixed Services (FS):
- 14,25 GHz to 14,50 GHz (earth-to-space);
- 10,70 GHz to 11,70 GHz (space-to-earth).
The VSAT uses linear polarization.
The VSAT operates through a geostationary satellite at least 3° away from any other geostationary satellite operating in the same frequency band and covering the same area.
The VSAT antenna diameter does not exceed 3,8 m, or equivalent effective area.
The VSAT is either:
- a transmit only VSAT: designed for transmission only of radio-communications signals in any of the
frequency bands (earth-to-space) specified above; or
- a transmit and receive VSAT: designed for transmission and reception of radio-communications signals in any of the frequency bands specified above; or
- a receive only VSAT: designed for reception only of radio-communications signals in any of the
frequency bands (space-earth) specified above.
The VSAT is designed usually for unattended operation.
The VSAT is operating as part of a satellite network (e.g. star, mesh or point-to-point) used for the distribution and/or exchange of information between users.
The transmit-only and transmit-and-receive VSAT is controlled and monitored by a Centralized Control and Monitoring Function (CCMF). The CCMF is outside the scope of the present document.
The present document applies to the VSAT with its ancillary equipment and its various terrestrial ports, and when operated within the boundary limits of the operational environmental profile declared by the applicant and when installed as required by the applicant by declaration or in the user documentation. The present document is intended to cover the provisions of Directive 1999/5/EC (R&TTE Directive) [1], 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 Directive 1999/5/EC (R&TTE Directive) [1] may apply to equipment within the scope of the present document.

Status
Published
Publication Date
31-May-2006
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jun-2006
Due Date
01-Jun-2006
Completion Date
01-Jun-2006
Mandate
M/284

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SIST EN 301 428 V1.3.1:2006

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SIST EN 301 428 V1.3.1:2006 is the Slovenian adoption of the ETSI harmonized European Standard for VSAT satellite earth stations. It covers transmit-only, transmit/receive and receive-only terminals operating in the 11/12/14 GHz bands, and it specifies the spectrum-use, emission, pointing and control-and-monitoring requirements used for assessment under Article 3.2 of the R&TTE Directive. It is published by SIST and is aimed at equipment that works as part of a satellite network.

What does SIST EN 301 428 V1.3.1:2006 specify?

SIST EN 301 428 V1.3.1:2006 specifies the technical conditions for Very Small Aperture Terminals (VSATs) in the 11/12/14 GHz range, including the radio states, emissions and control behavior needed to protect spectrum use. It applies to complete VSAT equipment with ancillary equipment and terrestrial ports, within the declared operational environmental profile and installed as declared in the user information.

The standard applies to VSATs that use linear polarization, work through a geostationary satellite at least 3° away from other geostationary satellites in the same band and same area, and use an antenna diameter not exceeding 3.8 m or an equivalent effective area. The transmit-only and transmit/receive versions are controlled by a Centralized Control and Monitoring Function (CCMF), which is outside the scope of the standard.

The document is organized into scope, references, definitions and abbreviations, technical requirements, testing for compliance, test methods for complete VSAT, and test methods for modified VSAT. Its annexes are:

AnnexWhat it covers
Annex AThe EN Requirements table (EN-RT)
Annex BPointing stability methodology
Annex CThe EN title in the official languages
Annex DBibliography

What are the key requirements of SIST EN 301 428 V1.3.1:2006?

SIST EN 301 428 V1.3.1:2006 focuses on spectrum compatibility and on keeping a VSAT under control when transmission must stop or resume. The most important requirements are in clause 4, with the corresponding test methods in clauses 5 to 7.

Operating conditions and state model

Clause 4.1 ties compliance to the declared environmental profile and to the declared installation conditions. In practice, this means the applicant defines the conditions under which the VSAT is expected to meet the standard, and the tests are run within those declared limits.

Clause 4.1.4 defines the VSAT and radio states used by the control logic. The standard distinguishes states such as out-of-service, checking, stand-by and in-service, because these states determine whether the terminal may transmit or must remain silent.

Emissions and spectrum use

Clause 4.2.1 sets limits for off-axis spurious radiation. The limits depend on the radio state and whether the equipment is transmit-capable or receive-only, and they apply to the complete VSAT including indoor and outdoor parts and cabling. For a reader, this means the terminal must keep unwanted radiation outside the intended beam under control, not just in the main link direction.

Clause 4.2.2 covers on-axis spurious radiation for transmit VSATs. This is important because unwanted energy close to the wanted transmit direction can affect adjacent carriers and satellite network planning.

Clause 4.2.3 deals with off-axis e.i.r.p. emission density within the band. It addresses co-polar and cross-polar emissions, alignment errors, burst transmission portions and uplink power density control. In practice, this clause is about antenna pattern behavior and how the terminal must behave when power control or burst transmission changes the emitted spectrum.

Clause 4.2.4 addresses carrier suppression, and clause 4.2.5 addresses mechanical antenna pointing for transmit VSATs. Together, these requirements keep the antenna and transmitter aligned well enough to avoid wasting power and causing interference.

Control and monitoring

Clause 4.2.6 defines the class A Control and Monitoring Functions. SIST EN 301 428 V1.3.1:2006 requires a control channel (CC), processor monitoring, transmit subsystem monitoring, transmission validation, reception of commands from the CCMF, and power-on/reset behavior. In practice, a transmit-capable VSAT must be able to stop transmitting when a fault, reset or control command occurs.

The standard also requires the VSAT to monitor whether its CC receive path works and whether authorized CC identification codes are received. That matters because a terminal that cannot reliably receive control messages must not keep transmitting unchecked.

Clause 4.2.7 defines the class B Control and Monitoring Functions. The document allows either class A or class B control and monitoring, and the introduction notes that class B is more suitable for networks with many terminals. For users, this is a design choice that affects the network architecture and the monitoring approach.

Testing and modified equipment

Clause 5 requires testing at representative points within the declared environmental profile. Clause 6 gives the test methods for a complete VSAT, including measurement uncertainty limits, radiated and conducted spurious emission measurements, emission-density measurements, antenna pattern checks and control-function tests. Clause 7 covers modified VSATs and identifies when previous measurements may be reused after module replacement.

What terms does SIST EN 301 428 V1.3.1:2006 define?

  • Very Small Aperture Terminal (VSAT) - the complete terminal equipment, including the indoor unit, the outdoor unit and the connecting cables between them.
  • Centralized Control and Monitoring Functions (CCMF) - the system-level function that monitors and controls transmit VSATs in a network.
  • Control Channel (CC) - the channel or channels through which the VSAT receives control information from the CCMF.
  • Response Channel (RC) - the channel through which the VSAT sends monitoring information back to the CCMF.
  • Equivalent Isotropically Radiated Power (EIRP) - the declared maximum radiated power capability of the VSAT, or the clear-sky maximum required when uplink power control is used.
  • System Monitoring Fail (SMF) - the event that marks a detected fault condition and triggers the state change that stops or inhibits transmission.

Who uses SIST EN 301 428 V1.3.1:2006?

Manufacturers and their authorized representatives use SIST EN 301 428 V1.3.1:2006 when designing VSAT equipment for the 11/12/14 GHz bands. Test laboratories use it to set up emission, antenna and control-function measurements.

Conformity assessment bodies and quality managers use it to judge whether a VSAT matches the declared state behavior and spectrum limits. Satellite operators and network operators use it when specifying control-and-monitoring behavior for transmit VSAT networks, especially where many terminals must be managed consistently.

Which standards are used with SIST EN 301 428 V1.3.1:2006?

The references in clause 2 and the related documents in the bibliography show the standards and texts most closely tied to this one:

  • Directive 1999/5/EC (R&TTE Directive) - the legal basis for the essential requirement in Article 3.2 that the standard addresses.
  • CISPR 16-1-5 - provides antenna calibration test site requirements used for radiated measurement work.
  • Directive 98/34/EC - the notification framework under which the standard was developed.
  • ETSI ETS 300 161 - covers centralized control and monitoring functions for VSAT networks.
  • ETSI EN 301 489-12 - gives EMC conditions for VSAT-related radio equipment.
  • ETSI TR 102 375 - helps determine which parts of antenna radiation patterns matter for geostationary satellite orbit protection.
  • ITU-R Recommendation S.524-8 and ITU-R Recommendation S.728-1 - provide related off-axis e.i.r.p. density guidance for earth stations and VSATs.
  • ETSI TBR 28 and ETSI EN 301 428 (V1.1.1) - earlier related VSAT documents named in the bibliography.
  • ETSI EN 301 459 - a related harmonized EN for other satellite terminal types.

What does the SIST EN 301 428 V1.3.1:2006 document contain?

The document contains state definitions, requirement tables, conformance requirements and detailed test methods for spectrum and control behavior. It includes tables for spurious-emission limits and a state table that links VSAT states to radio states.

Clause 6 provides test arrangements using spectrum analysers, power meters, oscilloscopes and substitution antennas, with separate procedures for radiated and conducted measurements. It also gives methods for checking control channel reception, processor monitoring, transmit subsystem monitoring, transmission validation and power-on/reset behavior.

Annex A gives the EN-RT proforma for static conformity assessment. Annex B describes a numerical analysis approach for pointing stability under wind loading, and Annex C lists the EN title in official languages.

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Effective Date
01-Dec-2009

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Frequently Asked Questions

SIST EN 301 428 V1.3.1:2006 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Satellite Earth Stations and Systems (SES); Harmonized EN for Very Small Aperture Terminal (VSAT); Transmit-only, transmit/receive or receive-only satellite earth stations operating in the 11/12/14 GHz frequency bands covering essential requirements under article 3.2 of the R&TTE directive". This standard covers: The present document applies to Very Small Aperture Terminals (VSATs) which have the following characteristics: The VSAT is operating in one or more frequency ranges in the part of the following bands allocated exclusively to the Fixed Satellite Services (FSS): - 14,00 GHz to 14,25 GHz (earth-to-space); - 12,50 GHz to 12,75 GHz (space-to-earth); or in the shared parts of the following bands, allocated to the FSS and Fixed Services (FS): - 14,25 GHz to 14,50 GHz (earth-to-space); - 10,70 GHz to 11,70 GHz (space-to-earth). The VSAT uses linear polarization. The VSAT operates through a geostationary satellite at least 3° away from any other geostationary satellite operating in the same frequency band and covering the same area. The VSAT antenna diameter does not exceed 3,8 m, or equivalent effective area. The VSAT is either: - a transmit only VSAT: designed for transmission only of radio-communications signals in any of the frequency bands (earth-to-space) specified above; or - a transmit and receive VSAT: designed for transmission and reception of radio-communications signals in any of the frequency bands specified above; or - a receive only VSAT: designed for reception only of radio-communications signals in any of the frequency bands (space-earth) specified above. The VSAT is designed usually for unattended operation. The VSAT is operating as part of a satellite network (e.g. star, mesh or point-to-point) used for the distribution and/or exchange of information between users. The transmit-only and transmit-and-receive VSAT is controlled and monitored by a Centralized Control and Monitoring Function (CCMF). The CCMF is outside the scope of the present document. The present document applies to the VSAT with its ancillary equipment and its various terrestrial ports, and when operated within the boundary limits of the operational environmental profile declared by the applicant and when installed as required by the applicant by declaration or in the user documentation. The present document is intended to cover the provisions of Directive 1999/5/EC (R&TTE Directive) [1], 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 Directive 1999/5/EC (R&TTE Directive) [1] may apply to equipment within the scope of the present document.

The present document applies to Very Small Aperture Terminals (VSATs) which have the following characteristics: The VSAT is operating in one or more frequency ranges in the part of the following bands allocated exclusively to the Fixed Satellite Services (FSS): - 14,00 GHz to 14,25 GHz (earth-to-space); - 12,50 GHz to 12,75 GHz (space-to-earth); or in the shared parts of the following bands, allocated to the FSS and Fixed Services (FS): - 14,25 GHz to 14,50 GHz (earth-to-space); - 10,70 GHz to 11,70 GHz (space-to-earth). The VSAT uses linear polarization. The VSAT operates through a geostationary satellite at least 3° away from any other geostationary satellite operating in the same frequency band and covering the same area. The VSAT antenna diameter does not exceed 3,8 m, or equivalent effective area. The VSAT is either: - a transmit only VSAT: designed for transmission only of radio-communications signals in any of the frequency bands (earth-to-space) specified above; or - a transmit and receive VSAT: designed for transmission and reception of radio-communications signals in any of the frequency bands specified above; or - a receive only VSAT: designed for reception only of radio-communications signals in any of the frequency bands (space-earth) specified above. The VSAT is designed usually for unattended operation. The VSAT is operating as part of a satellite network (e.g. star, mesh or point-to-point) used for the distribution and/or exchange of information between users. The transmit-only and transmit-and-receive VSAT is controlled and monitored by a Centralized Control and Monitoring Function (CCMF). The CCMF is outside the scope of the present document. The present document applies to the VSAT with its ancillary equipment and its various terrestrial ports, and when operated within the boundary limits of the operational environmental profile declared by the applicant and when installed as required by the applicant by declaration or in the user documentation. The present document is intended to cover the provisions of Directive 1999/5/EC (R&TTE Directive) [1], 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 Directive 1999/5/EC (R&TTE Directive) [1] may apply to equipment within the scope of the present document.

SIST EN 301 428 V1.3.1:2006 is classified under the following ICS (International Classification for Standards) categories: 33.060.30 - Radio relay and fixed satellite communications systems. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 301 428 V1.3.1:2006 has the following relationships with other standards: It is inter standard links to SIST EN 301 428:2001. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN 301 428 V1.3.1:2006 is associated with the following European legislation: EU Directives/Regulations: 1999/5/EC, 2005-01-1864, TRRTP124; Standardization Mandates: M/284. 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 301 428 V1.3.1:2006 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)


SLOVENSKI STANDARD
01-junij-2006
6DWHOLWVNH]HPHOMVNHSRVWDMHLQVLVWHPL 6(6 ±+DUPRQL]LUDQL(1]DVDWHOLWVNH
WHUPLQDOH]]HORPDMKQRDQWHQVNRRGSUWLQR 96$7 ±RGGDMQHRGGDMQRVSUHMHPQH
KSDVRYLKDOLVSUHMHPQHVDWHOLWVNH]HPHOMVNHSRVWDMHGHOXMRþHYIUHNYHQþQL
*+]±NL]DMHPDELVWYHQH]DKWHYHþOHQDGLUHNWLYH5 77(
Satellite Earth Stations and Systems (SES); Harmonized EN for Very Small Aperture
Terminal (VSAT); Transmit-only, transmit/receive or receive-only satellite earth stations
operating in the 11/12/14 GHz frequency bands covering essential requirements under
article 3.2 of the R&TTE directive
Ta slovenski standard je istoveten z: EN 301 428 Version 1.3.1
ICS:
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Candidate Harmonized European Standard (Telecommunications series)

Satellite Earth Stations and Systems (SES);
Harmonized EN for Very Small Aperture Terminal (VSAT);
Transmit-only, transmit/receive or receive-only satellite earth
stations operating in the 11/12/14 GHz frequency bands
covering essential requirements under
article 3.2 of the R&TTE directive

2 ETSI EN 301 428 V1.3.1 (2006-02)

Reference
REN/SES-00270
Keywords
regulation, satellite, VSAT
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The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2006.
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ETSI
3 ETSI EN 301 428 V1.3.1 (2006-02)
Contents
Intellectual Property Rights.7
Foreword.7
Introduction .8
1 Scope.11
2 References.12
3 Definitions and abbreviations.12
3.1 Definitions.12
3.2 Abbreviations.14
4 Technical requirements specifications.15
4.1 General.15
4.1.1 Environmental profile.15
4.1.2 Control and Monitoring Functions (CMF).15
4.1.3 Operational configurations.15
4.1.4 Transmit VSAT states and radio states.15
4.1.4.1 Definitions.15
4.1.4.2 Class A CMF.16
4.1.4.3 Class B CMF.16
4.1.4.4 Radio states.16
4.2 Conformance requirements.17
4.2.1 Off-axis spurious radiation .17
4.2.1.1 Justification.17
4.2.1.2 Specification.17
4.2.1.2.1 Transmit VSAT.17
4.2.1.2.2 Receive-only VSAT.18
4.2.1.3 Conformance tests.19
4.2.2 On-axis spurious radiation for transmit VSAT .19
4.2.2.1 Justification.19
4.2.2.2 Specification.19
4.2.2.2.1 Specification 1: "Carrier-on" radio state.19
4.2.2.2.2 Specification 2: "Carrier-off" and "Emissions disabled" radio states.19
4.2.2.3 Conformance tests.19
4.2.3 Off-axis e.i.r.p emission density within the band.19
4.2.3.1 Justification.20
4.2.3.2 Specification.20
4.2.3.3 Conformance tests.21
4.2.4 Carrier suppression.21
4.2.4.1 Justification.21
4.2.4.2 Specification.21
4.2.4.3 Conformance tests.21
4.2.5 Mechanical (antenna pointing) for transmit VSAT .22
4.2.5.1 Justification.22
4.2.5.2 Specification.22
4.2.5.3 Conformance tests.22
4.2.6 Class A Control and Monitoring Functions .22
4.2.6.1 Control and Monitoring Functions (CMF).22
4.2.6.1.1 General.22
4.2.6.1.2 CMF state transition diagram .22
4.2.6.1.3 Specification of states.24
4.2.6.2 Control Channels (CC).24
4.2.6.2.1 Justification.24
4.2.6.2.2 Specification.25
4.2.6.2.3 Conformance tests.25
4.2.6.3 Self monitoring functions.25
ETSI
4 ETSI EN 301 428 V1.3.1 (2006-02)
4.2.6.3.1 General.25
4.2.6.3.2 Processor monitoring.26
4.2.6.3.3 Transmit subsystem monitoring.26
4.2.6.3.4 VSAT transmission validation.26
4.2.6.4 Reception of commands from the CCMF .28
4.2.6.4.1 General.28
4.2.6.4.2 Disable message.28
4.2.6.4.3 Enable Message.28
4.2.6.5 Power-on/Reset.28
4.2.6.5.1 Justification.28
4.2.6.5.2 Specification.28
4.2.6.5.3 Conformance tests.29
4.2.7 Class B Control and Monitoring Functions .29
4.2.7.1 Processor monitoring.30
4.2.7.1.1 Justification.30
4.2.7.1.2 Specification.30
4.2.7.1.3 Conformance tests.30
4.2.7.2 Transmit subsystem monitoring.30
4.2.7.2.1 Justification.30
4.2.7.2.2 Specification.30
4.2.7.2.3 Conformance tests.30
4.2.7.3 Power-on/Reset.30
4.2.7.3.1 Justification.30
4.2.7.3.2 Specification.30
4.2.7.3.3 Conformance tests.31
4.2.7.4 Control Channel (CC) reception .31
4.2.7.4.1 Justification.31
4.2.7.4.2 Specification.31
4.2.7.4.3 Conformance tests.31
4.2.7.5 Network control commands .31
4.2.7.5.1 Justification.31
4.2.7.5.2 Specification.31
4.2.7.5.3 Conformance test.31
4.2.7.6 Initial burst transmission .32
4.2.7.6.1 Justification.32
4.2.7.6.2 Specification.32
4.2.7.6.3 Conformance tests.32
5 Testing for compliance with technical requirements.32
5.1 Environmental conditions for testing .32
5.2 Essential radio test suites.32
6 Test methods for the complete VSAT.32
6.1 General.32
6.2 Off-axis spurious radiation.33
6.2.1 Test method.33
6.2.1.0 Multi-carrier operation.34
6.2.1.1 Up to 1 000 MHz .34
6.2.1.1.1 Test site.34
6.2.1.1.2 Measuring receivers.34
6.2.1.1.3 Procedure.35
6.2.1.2 Above 1 000 MHz.35
6.2.1.2.1 Identification of the significant frequencies of spurious radiation .35
6.2.1.2.2 Measurement of radiated power levels of identified spurious radiation.36
6.2.1.2.3 Measurement of conducted spurious radiation at the antenna flange .37
6.3 On-axis spurious radiation for transmit VSAT.38
6.3.1 Test method.38
6.3.1.1 Test site.38
6.3.1.2 Method of measurement.38
6.3.1.2.1 General.38
6.3.1.2.2 Method of measurement at the antenna flange .38
6.3.1.2.3 Method of measurement with a test antenna .39
ETSI
5 ETSI EN 301 428 V1.3.1 (2006-02)
6.4 Off-axis e.i.r.p emission density within the band .40
6.4.1 Test method.40
6.4.1.1 General.40
6.4.1.2 Transmit output power density.40
6.4.1.2.1 General.40
6.4.1.2.2 Test site.40
6.4.1.2.3 Method of measurement.41
6.4.1.3 Antenna transmit gain.42
6.4.1.3.1 General.42
6.4.1.3.2 Test site.42
6.4.1.3.3 Method of measurement.42
6.4.1.4 Antenna transmit radiation patterns .43
6.4.1.4.1 General.43
6.4.1.4.2 Test site.43
6.4.1.4.3 Test arrangement.43
6.4.1.4.4 Co-polar radiation pattern-azimuth.43
6.4.1.4.5 Co-polar radiation pattern-elevation.44
6.4.1.4.6 Cross-polar radiation pattern-azimuth .45
6.4.1.4.7 Cross-polar radiation pattern-elevation .45
6.4.2 Computation of results.46
6.5 Carrier suppression.46
6.5.1 Test method.46
6.6 Antenna pointing for transmit VSAT .46
6.6.1 Test method.46
6.7 Class A Control and Monitoring Functions.47
6.7.1 General.47
6.7.2 Test arrangement.47
6.7.3 Control Channels (CC) .48
6.7.3.1 Test method.48
6.7.3.1.1 Test method for internal CC .48
6.7.3.1.2 Test method for external CC .49
6.7.4 Processor monitoring.49
6.7.4.1 Test method.49
6.7.5 Transmit subsystem monitoring.49
6.7.5.1 Test method.49
6.7.6 VSAT transmission validation.50
6.7.6.1 Test method for VSAT validation by the CCMF for VSAT using internal CC .50
6.7.6.2 Test method for VSAT validation by receiving station(s) for VSAT using internal CC.50
6.7.6.3 Test method for transmission validation for VSAT using external CC.50
6.7.7 Reception of commands from the CCMF .50
6.7.7.1 Test method.50
6.7.8 Power-on/Reset.50
6.7.8.1 Test method.50
6.8 Class B Control and Monitoring Functions.51
6.8.1 Test arrangement.51
6.8.2 Processor monitoring- Test method .52
6.8.3 Transmit subsystem monitoring-Test method.52
6.8.4 Power-on/Reset-Test method.53
6.8.5 Control Channel (CC) reception-Test method .53
6.8.6 Network Control commands-Test method.54
6.8.7 Initial burst transmission-Test method.56
7 Test methods for modified VSAT .56
7.1 General.56
7.2 Antenna subsystem replacement.57
Annex A (normative): The EN Requirements table (EN-RT).58
Annex B (informative): Pointing stability methodology .59
Annex C (informative): The EN title in the official languages .60
ETSI
6 ETSI EN 301 428 V1.3.1 (2006-02)
Annex D (informative): Bibliography.62
History .63

ETSI
7 ETSI EN 301 428 V1.3.1 (2006-02)
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 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 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 ("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: 10 February 2006
Date of latest announcement of this EN (doa): 31 May 2006
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 November 2006
Date of withdrawal of any conflicting National Standard (dow): 30 November 2006

ETSI
8 ETSI EN 301 428 V1.3.1 (2006-02)
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.

Disability*
3.3f
Emergency*
3.3e
Fraud*
3.3d
3.3c
Privacy*
No harm to the network*
3.3b
* If needed
Scoped by
Interworking via the network*
equipment
3.3a class or type
Interworking with the network
Use of spectrum
3.2
New radio harmonized standards
Spectrum
Scoped by frequency and/or equipment type
Radio Product EMC
EN 301 489 multi-part EMC standard
3.1b
EMC
Generic and product standards also notified under EMC Directive
- If needed, new standards for human exposure to
Electromagnetic Fields,
- if needed, new standards for acoustic safety
3.1a
Standards also notified under LV Directive
Safety
Non-radio Radio (RE)
TTE Non-TTE
Figure 1: Modular structure for the various standards used under the R&TTE Directive [1]
ETSI
9 ETSI EN 301 428 V1.3.1 (2006-02)
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 the diagram shows EN 301 489, the multi-part product EMC standard for radio used under the
EMC Directive.
For article 3.1a the diagram 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 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 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.
Remarks on the present document
The present document allows the choice of either a class A Control and Monitoring system or a class B Control and
Monitoring system. The class B system is more suitable for networks comprising very many terminals.
The determination of the parameters of the user earth stations using a given geo-stationary 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. For this reason the requirement on the cross polarization discrimination which was in
TBR 28 (see Bibliography) has not been copied in the present document and inter-modulation limits inside the band
14,0 GHz to 14,5 GHz are to be determined by system design and are subject to satellite operator specifications.
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 phenomenon 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 either 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 the
VSAT.
ETSI
10 ETSI EN 301 428 V1.3.1 (2006-02)
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.
ETSI
11 ETSI EN 301 428 V1.3.1 (2006-02)
1 Scope
The present document applies to Very Small Aperture Terminals (VSATs) which have the following characteristics:
• The VSAT is operating in one or more frequency ranges in the part of the following bands allocated
exclusively to the Fixed Satellite Services (FSS):
- 14,00 GHz to 14,25 GHz (earth-to-space);
- 12,50 GHz to 12,75 GHz (space-to-earth);
or in the shared parts of the following bands, allocated to the FSS and Fixed Services (FS):
- 14,25 GHz to 14,50 GHz (earth-to-space);
- 10,70 GHz to 11,70 GHz (space-to-earth).
• The VSAT uses linear polarization.
• The VSAT operates through a geostationary satellite at least 3° away from any other geostationary satellite
operating in the same frequency band and covering the same area.
• The VSAT antenna diameter does not exceed 3,8 m, or equivalent effective area.
• The VSAT is either:
- a transmit only VSAT: designed for transmission only of radio-communications signals in any of the
frequency bands (earth-to-space) specified above; or
- a transmit and receive VSAT: designed for transmission and reception of radio-communications signals
in any of the frequency bands specified above; or
- a receive only VSAT: designed for reception only of radio-communications signals in any of the
frequency bands (space-earth) specified above.
• The VSAT is designed usually for unattended operation.
• The VSAT is operating as part of a satellite network (e.g. star, mesh or point-to-point) used for the distribution
and/or exchange of information between users.
• The transmit-only and transmit-and-receive VSAT is controlled and monitored by a Centralized Control and
Monitoring Function (CCMF). The CCMF is outside the scope of the present document.
The present document applies to the VSAT with its ancillary equipment and its various terrestrial ports, and when
operated within the boundary limits of the operational environmental profile declared by the applicant and when
installed as required by the applicant by declaration or in the user documentation.
The present document is intended to cover the provisions of Directive 1999/5/EC (R&TTE Directive) [1], 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 Directive 1999/5/EC (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/.
ETSI
12 ETSI EN 301 428 V1.3.1 (2006-02)
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.
[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 (R&TTE Directive).
[2] CISPR 16-1-5 (2003): "Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-5: Radio disturbance and immunity measuring apparatus - Antenna calibration
test sites for 30 MHz to 1 000 MHz".
[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 and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in Directive 1999/5/EC [1] and the following
apply:
ancillary equipment: equipment used in connection with a VSAT is considered as ancillary if the three following
conditions are met:
a) the equipment is intended for use in conjunction with the VSAT to provide additional operational and/or
control features (e.g. to extend control to another position or location); and
b) the equipment cannot be used on a stand alone basis, to provide user functions independently of the
VSAT; and
c) the absence of the equipment does not inhibit the operation of the VSAT.
applicant: manufacturer or his authorized representative within the European Community or the person responsible for
placing the apparatus on the market
carrier-off radio state: radio state in which the VSAT may transmit and does not transmit any carrier
NOTE 1: The phrase "the VSAT may transmit" means that all the conditions for transmission are satisfied (e.g. in a
state where transmissions are permitted and no failure detected).
NOTE 2: The existence of a "Carrier-off" radio state depends on the system of transmission used. For VSATs
designed for continuous transmission mode there may be no "Carrier-off" radio state.
carrier-on radio state: radio state in which the VSAT may transmit and transmits a carrier
Centralized Control and Monitoring Functions (CCMF): set of functional entities that, at system level, monitor and
control the correct operation of all transmit VSAT in a network
Control Channel (CC): channel or channels by which VSAT receive control information from the CCMF
ETSI
13 ETSI EN 301 428 V1.3.1 (2006-02)
EIRP : maximum e.i.r.p capability of the VSAT as declared by the applicant
max
EIRP : either:
nom
(i) EIRP ;
max
(ii) or, when uplink power control is implemented, the maximum required e.i.r.p of the VSAT under clear sky
condition as declared by the applicant.
NOTE: The applicant may declare different values of EIRP and EIRP for each combination of occupied
max nom
bandwidth and transmission parameters (see clause 4.1.3).
emissions disabled radio state: radio stat
...