ETSI TBR 027 ed.1 (1997-12)

Satellite Earth Stations and Systems (SES); Low data rate Land Mobile satellite Earth Stations (LMES) operating in the 11/12/14 GHz frequency bands

DTBR/SES-00005

Satelitske zemeljske postaje in sistemi (SES) - Kopenske mobilne zemeljske satelitske postaje (LMES), ki delujejo v frekvenčnih pasovih 11/12/14 GHz

General Information

• Status: Published
• Publication Date: 06-Apr-2000
• Technical Committee: SES - Satellite Earth Stations & Systems
• Current Stage: 12 - Completion
• Due Date: 08-Jan-1998
• Completion Date: 16-Jan-1998
• Mandate: T-332
• Ref Project: PSIST TBR 027:1999 - Satellite Earth Stations and Systems (SES); Low data rate Land Mobile satellite Earth Stations (LMES) operating in the 11/12/14 GHz frequency bands

Standards Content (Sample)

SLOVENSKI STANDARD
PSIST TBR 027:1999
01-oktober-1999
6DWHOLWVNH]HPHOMVNHSRVWDMHLQVLVWHPL6(6.RSHQVNHPRELOQH]HPHOMVNH
VDWHOLWVNHSRVWDMH/0(6NLGHOXMHMRYIUHNYHQþQLKSDVRYLK*+]
Satellite Earth Stations and Systems (SES); Low data rate Land Mobile satellite Earth
Stations (LMES) operating in the 11/12/14 GHz frequency bands
Ta slovenski standard je istoveten z: TBR 027 Edition 1
ICS:
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
PSIST TBR 027:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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PSIST TBR 027:1999

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PSIST TBR 027:1999
TECHNICAL TBR 27
BASIS for December 1997
REGULATION
Source: ETSI TC-SES Reference: DTBR/SES-00005
ICS: 33.020
Key words: Satellite, earth station, mobile, LMES, MES, type approval
Satellite Earth Stations and Systems (SES);
Low data rate Land Mobile satellite Earth Stations (LMES)
operating in the 11/12/14 GHz frequency bands
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1997. All rights reserved.

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Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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Contents
Foreword .7
Introduction.7
1 Scope .9
2 Normative references.10
3 Definitions and abbreviations .10
3.1 Definitions .10
3.2 Abbreviations .11
4 Requirements.11
4.1 Unwanted emissions outside the band .11
4.1.1 Justification.11
4.1.2 Specification .11
4.1.3 Conformance tests .12
4.2 Unwanted emissions within the band.12
4.2.1 Justification.12
4.2.2 Specification .12
4.2.3 Conformance tests .12
4.3 Off-axis EIRP emissions density in the nominated bandwidth.12
4.3.1 Justification.12
4.3.2 Specification .13
4.3.3 Conformance tests .13
4.4 ElectroMagnetic Compatibility (EMC) .13
4.5 Control and Monitoring Functions (CMF).13
4.5.1 Processor monitoring .13
4.5.1.1 Justification.13
4.5.1.2 Specification .13
4.5.1.3 Conformance tests .14
4.5.2 Transmit subsystem monitoring .14
4.5.2.1 Justification.14
4.5.2.2 Specification .14
4.5.2.3 Conformance tests .14
4.5.3 Power-on/Reset.14
4.5.3.1 Justification.14
4.5.3.2 Specification .14
4.5.3.3 Conformance tests .14
4.5.4 Control Channel (CC) reception.14
4.5.4.1 Justification.14
4.5.4.2 Specification .14
4.5.4.3 Conformance tests .14
4.5.5 Network control commands.15
4.5.5.1 Justification.15
4.5.5.2 Specification .15
4.5.5.3 Conformance tests .15
4.5.6 Initial burst transmission.15
4.5.6.1 Justification.15
4.5.6.2 Specification .15
4.5.6.3 Conformance tests .15
5 Test methods .15
5.1 Unwanted emissions outside the band 14,00 GHz to 14,25 GHz.16
5.1.1 General.16
5.1.2 Test site.17
5.1.3 Test method .17

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5.1.3.1 Receive test equipment . 18
5.1.3.1.1 Measuring receiver for measurements
up to 1 000 MHz. 18
5.1.3.1.2 Spectrum analyser for measurements
above 1 000 MHz . 18
5.1.4 Procedure . 18
5.1.4.1 Test arrangements. 18
5.1.4.2 Up to 1 000 MHz . 19
5.1.4.3 Above 1 000 MHz. 19
5.1.4.3.1 Identification of the significant
frequencies of the radiated unwanted
emissions . 20
5.1.4.3.2 Measurement of radiated power levels
of identified spurious radiation . 21
5.1.4.3.3 Measurement of conducted unwanted
emissions at the antenna flange . 22
5.1.4.3.3.1 Test site. 22
5.1.4.3.3.2 Procedure. 22
5.2 Unwanted emissions within the band 14,00 GHz to 14,25 GHz. 22
5.2.1 Test method. 22
5.2.1.1 General . 23
5.2.1.2 Method of measurement at the antenna flange . 23
5.2.1.3 Method of measurement with a test antenna. 24
5.3 Off-axis EIRP emissions density in the nominated bandwidth. 25
5.3.1 General . 25
5.3.2 Static rms antenna pointing accuracy. 25
5.3.2.1 Method of measurement. 25
5.3.3 Measurement of the off-axis EIRP without the antenna . 26
5.3.3.1 Transmitter output power density. 26
5.3.3.1.1 Method of measurement . 26
5.3.3.2 Antenna transmit gain . 27
5.3.3.2.1 General. 27
5.3.3.2.2 Test site. 27
5.3.3.2.3 Method of measurement . 27
5.3.3.3 Antenna transmit radiation patterns . 28
5.3.3.3.1 General. 28
5.3.3.3.2 Test site. 28
5.3.3.3.3 Method of measurement . 29
5.3.3.4 Computation of results. 29
5.3.4 Measurement of the off-axis EIRP with the antenna . 30
5.3.4.1 General . 30
5.3.4.2 Maximum EIRP density per 40 kHz ratio relative to the
EIRP. 30
5.3.4.2.1 Method of measurement . 30
5.3.4.3 Maximum on-axis EIRP . 30
5.3.4.3.1 General. 30
5.3.4.3.2 Test site. 30
5.3.4.3.3 Method of measurement . 31
5.3.4.4 Antenna transmit radiation patterns . 32
5.3.4.4.1 General. 32
5.3.4.4.2 Test site. 32
5.3.4.4.3 Method of measurement . 33
5.3.4.5 Computation of results. 34
5.4 Control and monitoring. 34
5.4.1 Test arrangement . 34
5.4.2 Processor monitoring. 35
5.4.2.1 Test method. 35
5.4.3 Transmit subsystem monitoring. 35
5.4.3.1 Test method. 35
5.4.4 Power-on/Reset . 35
5.4.4.1 Test method. 35
5.4.5 Control Channel (CC) reception . 36
5.4.5.1 Test method. 36

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5.4.6 Network control commands.36
5.4.6.1 Test method.36
5.4.7 Initial burst transmission.37
5.4.7.1 Test method.37
Annex A (normative): The TBR Requirements Table (TBR-RT).38
Annex B (informative): Bibliography.39
History.40

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Foreword
This Technical Basis for Regulation (TBR) has been produced by the Satellite Earth Stations and Systems
(SES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
Introduction
The Council Directive in respect of satellite earth station equipment (SES Directive [1]) which supplements
the Council Directive on the approximation of the laws of the Member States concerning
telecommunications terminal equipment, including the mutual recognition of their conformity
(TTE Directive [2]) concerns the harmonization of conditions for the placing on the market of such
equipment.
Two classes of standards are applicable to satellite earth station equipment. European
Telecommunication Standards (ETSs) give the full technical specifications for this equipment, whereas
Technical Bases for Regulation (TBRs) give the essential requirements under the SES Directive [1] and
the TTE Directive [2] for placing such equipment on the market. Receive-only equipment, not intended for
terrestrial connection to the public telecommunications network, may be put into use. Nothing in this TBR
is construed to prevent the use of Community internal production control procedures as set out in the
annexes to the two Directives for such receive-only equipment. This TBR is based on ETS 300 255 (see
Bibliography).

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1 Scope
This Technical Basis for Regulation (TBR) specifies the technical requirements that apply to Land Mobile
Earth Stations (LMES) for compliance with Articles 4.1 and 4.3 of the SES Directive [1].
These LMES have the following characteristics:
- The LMES are operating in one or more frequency ranges of the Fixed Satellite Service (FSS):
- 10,70 GHz to 11,70 GHz (space to earth);
- 12,50 GHz to 12,75 GHz (space to earth);
- 14,00 GHz to 14,25 GHz (earth to space).
Because the transmissions from the LMES to the Satellite in the 14,00 GHz to 14,25 GHz band fall
under a secondary allocation, the transmissions should not cause harmful interference to primary
services (e.g. the Fixed Satellite Service (FSS)) and at the same time cannot claim protection from
harmful interferences from those services.
- The LMES could be either vehicle mounted or portable equipment.
- The LMES could consist of a number of modules including a keyboard interface to the user.
- The LMES use linear polarization.
- The LMES operate 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 antenna of the LMES may be omnidirectional or directional with a means of tracking the
satellite.
- The LMES are operating as part of a satellite network used for the distribution and/or exchange of
information between users.
- The LMES are controlled and monitored by a Network Control Facility (NCF). The NCF is outside
the scope of this TBR.
This TBR applies to the LMES with its ancillary equipment and its various terrestrial ports, and operated
under the conditions which are within the ranges of humidity, temperature and supply voltage declared by
the manufacturer.
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.
This TBR 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.
This TBR does not contain any requirement, recommendation or information about the installation of the
LMES.
Compliance of a LMES to the requirements of this TBR does not imply compliance to any requirement
related to the use of the LMES (e.g. licensing requirements).

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2 Normative references
This TBR incorporates by dated or undated reference, provisions from other publications. These
references are cited at the appropriate places in the text and the publications are listed hereafter. For
dated references, subsequent amendments to, or revisions of any of these publications apply to this TBR
only when incorporated into it by amendment or revision. For undated references the latest edition of the
publication referred to applies.
[1] Council Directive 93/97/EEC of 29 October 1993 supplementing Directive
91/263/EEC in respect of satellite earth station equipment. Called in the present
document the "SES Directive".
[2] Council Directive 91/263/EEC of 29 April 1991 on the approximation of the laws
of Member States concerning telecommunications terminal equipment, including
the mutual recognition of their conformity. Called in the present document the
"TTE Directive".
[3] prETS 300 339 (1996): "Radio Equipment and Systems (RES); General
Electro-Magnetic Compatibility (EMC) Standard for Radio-communications
equipment".
[4] CISPR 16-1, annex G (1993): "Specification for radio interference measuring
apparatus and measurements methods; Part 1: Radio disturbance and immunity
measuring apparatus; annex G: Validation procedure of open area test site for
the frequency range of 30 MHz to 1 000 MHz".
NOTE: This TBR also contains a number of informative references which have been included
to indicate the sources from which various material has been derived, hence they do
not have an associated normative reference number. Details of these publications are
given in annex B.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this TBR, the following definitions apply:
carrier-off state: A LMES is in this state when either it is authorized by the Network Control Facility (NCF)
to transmit but when it does not transmit any signal, or when it is not authorized by the NCF to transmit.
carrier-on state: An LMES is in this state when it is authorized by the NCF to transmit and when it
transmits a signal.
Control Channel (CC): A channel or channels by which LMES receive control information from the NCF
of their network.
Externally Mounted Equipment (EME): The EME consists of those of the modules of the Installable
Equipment (IE) which are intended to be mounted externally to the vehicle as stated by the manufacturer.
Installable Equipment (IE): An equipment which is intended to be fitted to a vehicle. An IE may consist of
one or several interconnected modules.
Internally Mounted Equipment (IME): Those of the modules of the IE which are not declared by the
manufacturer as EME are defined as IME.
manufacturer: The legal entity responsible under the terms of Council Directive 93/97/EEC
(SES Directive) [1], for placing the product on the market in a Member State.
nominated bandwidth: The bandwidth of the LMES radio frequency transmission is nominated by the
manufacturer. The nominated bandwidth is wide enough to encompass all spectral elements of the
transmission which have a level greater than the specified unwanted emissions limits. The nominated

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bandwidth is wide enough to take account of the transmit carrier frequency stability. The nominated
bandwidth is within the transmit frequency band within which the LMES operates.
Portable Equipment (PE): A PE is generally intended to be self-contained, free standing and portable.
Normally, a PE would consist of a single module, but may consist of several interconnected modules.
unwanted emissions: Unwanted emissions are those falling outside the nominated bandwidth.
3.2 Abbreviations
For the purposes of this TBR, the following abbreviations apply:
CC Control Channel
CMF Control and Monitoring Functions
EIRP Equivalent Isotropically Radiated Power
EMC ElectroMagnetic Compatibility
EME Externally Mounted Equipment
ETS European Telecommunication Standard
EUT Equipment Under Test
FSS Fixed Satellite Service
IE Installable Equipment
IME Internally Mounted Equipment
LMES Land Mobile Earth Station
NCF Network Control Facility
PE Portable Equipment
RF Radio Frequency
rms root mean square
STE Special Test Equipment
4 Requirements
4.1 Unwanted emissions outside the band
4.1.1 Justification
Protection of terrestrial and satellite services from emissions caused by LMES outside the band
14,00 GHz to 14,25 GHz.
4.1.2 Specification
The unwanted emissions in the measurement bandwidth and in all directions from the LMES outside the
band 14,00 GHz to 14,25 GHz, within which the LMES is designed to operate, shall be below the following
limits:
1) The LMES 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 unwanted emissions up to 1 000 MHz at a measuring distance of 10 m in a
120 kHz bandwidth
Frequency Quasi-peak limits
(MHz) (dBμV/m)
30 to 230 30
230 to 1 000 37
The lower limit shall apply at the transition frequency.

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2) The unwanted emissions Equivalent Isotropically Radiated Power (EIRP) above 1 000 MHz, in the
measurement bandwidth and in all directions shall not exceed the limits given in table 2.
Table 2: Limits of unwanted emissions above 1 000 MHz and outside the band 14,00 GHz to
14,25 GHz
Frequency range Carrier-on Carrier-off
(MHz) EIRP limit Measurement EIRP limit Measurement
(dBpW) bandwidth (kHz) (dBpW) bandwidth (kHz)
1 000 - 1 525 49 100 48 100
1 525 - 1 559 49 100 17 3
1 559 - 3 400 49 100 48 100
3 400 - 10 700 55 100 48 100
10 700 - 21 200 61 100 54 100
21 200 - 40 000 67 100 60 100
The lower limits shall apply at the transition frequencies.
4.1.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 5.1.
4.2 Unwanted emissions within the band
4.2.1 Justification
Protection of the primary services operating in the 14,00 GHz to 14,25 GHz frequency band.
4.2.2 Specification
Specification 1: Carrier-on state
The EIRP spectral density of the unwanted emissions shall not exceed 4 - 10 log N dBW/100 kHz in the
14,00 GHz to 14,25 GHz band and outside the nominated bandwidth.
N is the maximum number of LMES which are expected to transmit simultaneously on the same
frequency. This number shall not be exceeded for more than 0,01 % of the time. The value of N and the
operational conditions of the system shall be declared by the manufacturer.
Specification 2: Carrier-off state
The EIRP spectral density of any emission in the 14,00 GHz to 14,25 GHz band shall not exceed
-21 dBW/100 kHz.
4.2.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 5.2.
4.3 Off-axis EIRP emissions density in the nominated bandwidth
4.3.1 Justification
Protection of other satellite systems which use the same frequency band.

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4.3.2 Specification
For directional antennas the maximum EIRP in any 40 kHz band from any LMES in any direction φ
degrees from the antenna main beam axis shall not exceed the following limits within 3° of the
geostationary orbit:
33 - 25 log (φ + δφ) - 10 log (K) dBW/40 kHz where 2,5° ≤ φ + δφ ≤ 7,0°;
       +12 - 10 log (K) dBW/40 kHz where 7,0° < φ + δφ ≤ 9,2°;
36 - 25 log (φ + δφ) - 10 log (K) dBW/40 kHz where 9,2° < φ + δφ ≤ 48°;
        -6 - 10 log (K) dBW/40 kHz where 48° < φ + δφ ≤ 180°;
where φ is the angle, in degrees, between the main beam axis and the direction considered. The value of
δφ is equal to either:
a) the rms antenna tracking accuracy; or
b) twice the static rms antenna pointing accuracy; whichever is the larger.
K is the power density ratio between the fully loaded system and a single LMES measured in a 40 kHz
bandwidth.
The value of K, all technical characteristics and the operational conditions declared by the manufacturer
shall be entered in the test report.
These limits apply over Europe, and for the geostationary orbital arc declared by the manufacturer.
For non-directional antennas, the maximum EIRP per 40 kHz in any direction shall not exceed:
- 6 - 10 log (K) dBW/40 kHz;
where K is as defined above.
4.3.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 5.3.
4.4 ElectroMagnetic Compatibility (EMC)
There are no specific EMC requirements under this TBR however, ETS 300 339 [3] contains general EMC
specifications. Once this ETS becomes a harmonized EMC standard, and until a product specific
harmonized EMC standard is published, compliance to the general harmonized EMC standard will give
presumption of compliance with the EMC Directive (see Bibliography). Upon publication of the product
specific harmonized EMC standard compliance with that standard will give presumption of compliance
with the EMC Directive (see Bibliography).
4.5 Control and Monitoring Functions (CMF)
The following minimum set of CMF shall be implemented in LMES in order to minimize the probability that
they may originate unwanted transmissions that may give rise to harmful interference to other systems.
Under any fault condition when the LMES transmissions are being suppressed the limits for carrier-off
state shall apply.
4.5.1 Processor monitoring
4.5.1.1 Justification
To ensure that the LMES can suppress transmissions in the event of a processor sub-system failure.
4.5.1.2 Specification
The LMES shall incorporate a processor monitoring function for each of its processors involved in the
manipulation of traffic and in control and monitoring functions.

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The processor monitoring function shall detect any failure of the processor hardware and software.
No later than one second after any fault condition occurs, the LMES shall enter the carrier-off state until
the processor monitoring function has determined that all fault conditions have been cleared.
4.5.1.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 5.4.
4.5.2 Transmit subsystem monitoring
4.5.2.1 Justification
To ensure the correct operation of the transmit frequency generation sub-system, and to inhibit
transmissions should the sub-system fail.
4.5.2.2 Specification
The LMES shall monitor the operation of its transmit frequency generation sub-system.
No later than 5 seconds after any fault condition of the transmit frequency generation sub-system occurs,
the LMES shall enter the carrier-off state until the transmit sub-system monitoring function has determined
that all fault conditions have been cleared.
4.5.2.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 5.4.
4.5.3 Power-on/Reset
4.5.3.1 Justification
To demonstrate that the LMES achieves a controlled non-transmitting state following the powering of the
unit or the occurrence of a reset made by a local operator when this function is implemented.
4.5.3.2 Specification
During and following "power on" or a manual reset when this func
...