ETSI TBR 026 ed.1 (1998-05)

Satellite Earth Stations and Systems (SES); Low data rate Land Mobile satellite Earth Stations (LMES) operating in the 1,5/1,6 GHz frequency bands

DTBR/SES-00004

Satelitske zemeljske postaje in sistemi (SES) - Kopenske mobilne zemeljske satelitske postaje (LMES) za nizke podatkovne hitrosti, ki delujejo v frekvenčnih pasovih 1,5 GHz /1,6 GHz

General Information

• Status: Published
• Publication Date: 06-Apr-2000
• Technical Committee: SES - Satellite Earth Stations & Systems
• Current Stage: 12 - Completion
• Due Date: 09-Oct-1998
• Completion Date: 05-May-1998
• Mandate: T-332
• Ref Project: PSIST TBR 026:1999 - Satellite Earth Stations and Systems (SES); Low data rate Land Mobile satellite Earth Stations (LMES) operating in the 1,5/1,6 GHz frequency bands

Standards Content (Sample)

SLOVENSKI STANDARD
PSIST TBR 026:1999
01-oktober-1999
6DWHOLWVNH]HPHOMVNHSRVWDMHLQVLVWHPL6(6.RSHQVNHPRELOQH]HPHOMVNH
VDWHOLWVNHSRVWDMH/0(6]DQL]NHSRGDWNRYQHKLWURVWLNLGHOXMHMRYIUHNYHQþQLK
SDVRYLK*+]*+]
Satellite Earth Stations and Systems (SES); Low data rate Land Mobile satellite Earth
Stations (LMES) operating in the 1,5/1,6 GHz frequency bands
Ta slovenski standard je istoveten z: TBR 026 Edition 1
ICS:
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
PSIST TBR 026:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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PSIST TBR 026:1999

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PSIST TBR 026:1999
TECHNICAL TBR 26
BASIS for May 1998
REGULATION
Source: SES Reference: DTBR/SES-00004
ICS: 33.020
Key words: Earth station, LMES, LMSS, mobile, radio, satellite, type approval
Satellite Earth Stations and Systems (SES);
Low data rate Land Mobile satellite Earth Stations (LMES)
operating in the 1,5/1,6 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
Internet: [e-mail] -
http://www.etsi.fr - http://www.etsi.org
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 1998. All rights reserved.

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TBR 26: May 1998
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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TBR 26: May 1998
Contents
Foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Definitions and abbreviations. 8
3.1 Definitions. 8
3.2 Abbreviations. 9
4 Requirements. 9
4.1 Unwanted emissions outside the bands. 9
4.1.1 Justification. 9
4.1.2 Specification . 9
4.1.3 Conformance tests. 11
4.2 Maximum unwanted emission within the bands. 11
4.2.1 Justification. 11
4.2.2 Specification . 11
4.2.3 Conformance tests. 12
4.3 ElectroMagnetic Compatibility (EMC). 12
4.4 Control and Monitoring Functions (CMFs). 12
4.4.1 Processor monitoring. 12
4.4.1.1 Justification. 12
4.4.1.2 Specification. 12
4.4.1.3 Conformance tests . 12
4.4.2 Transmit subsystem monitoring . 13
4.4.2.1 Justification. 13
4.4.2.2 Specification. 13
4.4.2.3 Conformance tests . 13
4.4.3 Power-on/Reset. 13
4.4.3.1 Justification. 13
4.4.3.2 Specification. 13
4.4.3.3 Conformance tests . 13
4.4.4 Control Channel reception. 13
4.4.4.1 Justification. 13
4.4.4.2 Specification. 13
4.4.4.3 Conformance tests . 13
4.4.5 Network control commands. 14
4.4.5.1 Justification. 14
4.4.5.2 Specification. 14
4.4.5.3 Conformance test. 14
4.6 Initial burst transmission. 14
4.6.1 Justification. 14
4.6.2 Specification . 14
4.6.3 Conformance tests. 14
5 Test methods. 15
5.1 Measurement of unwanted emissions . 15
5.1.1 General. 15
5.1.2 Test site . 16
5.1.3 Test method . 16
5.1.3.1 Receive test equipment. 16

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TBR 26: May 1998
5.1.3.1.1 Measuring receiver for measurements
up to 1 000 MHz. 16
5.1.3.1.2 Spectrum analyser for measurements
above 1 000 MHz . 17
5.1.4 Procedure. 17
5.1.4.1 Test arrangements. 17
5.1.4.2 Up to 1 000 MHz. 18
5.1.4.3 Above 1 000 MHz . 18
5.2 LMES Control and Monitoring Functions (CMF) . 19
5.2.1 Test arrangement. 19
5.2.2 Processor monitoring. 20
5.2.2.1 Test method. 20
5.2.3 Transmit subsystem monitoring. 21
5.2.3.1 Test method. 21
5.2.4 Power-on/Reset. 21
5.2.4.1 Test method. 21
5.2.5 Control channel reception. 21
5.2.5.1 Test method. 21
5.2.6 Network control commands. 22
5.2.6.1 Test method. 22
5.2.7 Initial burst transmission. 24
5.2.7.1 Test method. 24
Annex A (normative): The TBR Requirements Table (TBR-RT). 25
Annex B (informative): Bibliography. 26
History . 27

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PSIST TBR 026:1999
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TBR 26: May 1998
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).
The present document has been produced by ETSI in response to a mandate from the European
Commission issued under Council Directive 83/189/EEC (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 Standards, the reference of which will be
published in the Official Journal of the European Communities referencing the Council Directive 93/97/EEC
of 29 October 1993 supplementing Directive 91/263/EEC in respect of satellite earth station equipment
("the SES Directive").
A common technical regulation may be established by the European Commission in accordance with the
Directive.
This TBR is based on ETS 300 254 which has been used for type approval purposes on a national basis
for several years.
Due to a new requirement for the protection of the Aeronautical Radio Navigation Service based on the
Global Navigation Satellite System (GNSS), scheduled to offer approach and landing operational services
likely not before the year 2005, new limits for unwanted emissions will be necessary. These new limits may
not be completely met by existing or presently marketed equipment that was developed on the basis of
ETS 300 254. Consequently the following transitional arrangement is necessary.
This TBR incorporates two sets of limits. One set (table 2a) applicable up to 1 June 2002 and a more
stringent set of limits (table 2b) applicable after this date for the protection of the Aeronautical Radio
Navigation Service in the GNSS band.
This TBR is intended to be part of an Intermediate Common Technical Regulation (I-CTR), the applicability
of which is expected to be limited to 1 June 2002. It is intended that the final CTR contains only table 2b as
normative and table 2a as an informative historical annex.
A TBR is limited to being the basis for equipment type approval. This TBR therefore cannot contain
regulations for the prevention of interference to GNSS operation after 2005 due to terminals type approved
prior to 1 June 2002, on the basis of this TBR or on the basis of a past national regulation (e.g. based on
ETS 300 254).
The protection of the GNSS band from the year 2005 onwards from harmful interference from LMESs
approved before 1 June 2002 or already in service before the CTR enters into force may be obtained
either by decisions of the national regulatory authorities to stop the operation of such equipment, or by
operational restrictions agreed by the regulatory authority with satellite operators . It is recommended that
such decisions should be harmonized at the European level. Such decisions are outside the scope of a
TBR.

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TBR 26: May 1998
Introduction
The Council Directive in respect of satellite earth station equipment (93/97/EEC) [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 (91/263/EEC) [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 Satellite Earth Station Directive
(93/97/EEC) [1] and the Telecommunications Terminal Equipment Directive (91/263/EEC) [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 300 254 (see annex B, Bibliography).

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1 Scope
This final draft Technical Basis for Regulation (TBR) specifies the technical requirements that apply to Land
Mobile Earth Stations (LMESs) for compliance with Articles 4.1 and 4.3 of Council Directive 93/97/EEC [1].
These LMESs have the following characteristics:
- The LMESs are operating in one or more frequency ranges of the Land Mobile Satellite Service
(LMSS):
- 1 525,0 MHz to 1 544,0 MHz (Space - Earth);
- 1 555,0 MHz to 1 559,0 MHz (Space - Earth);
- 1 626,5 MHz to 1 645,5 MHz (Earth - Space);
- 1 656,5 MHz to 1 660,5 MHz (Earth - Space);
- The LMESs could be either vehicle mounted or portable equipment;
- The LMESs could consist of a number of modules including a keyboard interface to the user;
- The LMESs are operating as part of a satellite network used for the distribution and/or exchange of
information between users;
- The LMESs 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
LMESs.
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).
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 (1993) supplementing Directive 91/263/EEC in
respect of satellite earth station equipment.
[2] Council Directive 91/263/EEC (1991) on the approximation of the laws of
Member States concerning telecommunications terminal equipment, including the
mutual recognition of their conformity.

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[3] ETS 300 339 (1997): "Radio Equipment and Systems (RES); General
electromagnetic compatibility (EMC) for radio communications equipment".
[4] Council Directive 89/336/EEC (1989) on the approximation of the laws of
Member States relating to electromagnetic compatibility.
[5] CISPR N°16-1 (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 (Bibliography).
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: A channel or channels by which LMESs receive control information from the NCF of
their network.
Externally Mounted Equipment (EME): The EME consists of those of the modules of the 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 Internally Mounted Equipment (IME).
manufacturer: The legal entity responsible under the terms of the Council Directive 93/97/EEC [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
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 portable equipment 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.
unwanted emissions: Unwanted emissions are those falling outside the nominated bandwidth.

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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
IE Installable Equipment
IME Internally Mounted Equipment
LMES Land Mobile Earth Station
LMSS Land Mobile Satellite Service
NCF Network Control Facility
PE Portable Equipment
STE Special Test Equipment
TBR Technical Basis for Regulation
4 Requirements
4.1 Unwanted emissions outside the bands
4.1.1 Justification
Protection of terrestrial and satellite services from emissions caused by LMESs outside the bands
1 626,5 MHz to 1 645,5 MHz and 1 656,5 MHz to 1 660,5 MHz.
4.1.2 Specification
The unwanted emissions in the measurement bandwidth and in all directions from the Land Mobile Earth
Station (LMES) outside the bands 1 626,5 MHz to 1 645,5 MHz and 1 656,5 MHz to 1 660,5 MHz, within
which the LMES is designed to operate, shall be below the following limits.
1) The unwanted emissions over the frequency range 30 MHz to 1 000 MHz shall not exceed the
limits in table 1.
Table 1: Limits of unwanted emissions up to 1 000 MHz at a measuring distance of 10 m
Frequency (MHz) Quasi-peak limits (dB(μV/m))
30 to 230 30
230 to 1 000 37
The lower limit shall apply at the transition frequency.
2) The unwanted emissions Equivalent Isotropically Radiated Power (EIRP) above 1 000 MHz, in the
measurement bandwidth and in all directions shall not exceed:
- before 1 June 2002 the limits of table 2a;
- from 1 June 2002 the limits of table 2b.

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Table 2a: Limits of unwanted emissions above 1 000 MHz
and outside the bands 1 626,5 MHz to 1 645,5 MHz and 1 656,6 MHz to 1 660,5 MHz
applicable before 1 June 2002
Frequency range Carrier-on Carrier-off
(MHz) EIRP limit Measurement EIRP limit Measurement
(dBpW) bandwidth (kHz) (dBpW) bandwidth (kHz)
1 000 to 1 525 49 100 48 100
1 525 to 1 559 49 100 17 3
1 559 to 1 600 49 100 48 100
1 600 to 1 626 74 100 48 100
1 626 to 1 626,5 84 3 48 100
1 645,5 to 1 645,6 104 3 57 3
1 645,6 to 1 646,1 84 3 57 3
1 646,1 to 1 655,9 74 3 57 3
1 655,9 to 1 656,4 84 3 57 3
1 656,4 to 1 656,5 104 3 57 3
1 660,5 to 1 661 84 3 48 100
1 661 to 1 690 74 100 48 100
1 690 to 3 400 49 100 48 100
(note 2)
3 400 to 10 700 55 100 48 100
(note 3)
10 700 to 21 200 61 100 54 100
21 200 to 40 000 67 100 60 100
NOTE 1: The lower limits shall apply at the transition frequencies.
NOTE 2: In the band 3 253,0 MHz to 3 321,0 MHz the maximum EIRP in one, and only one, 100 kHz
measurement bandwidth shall not exceed 82 dBpW. Elsewhere in this band the power limit in
this table shall be applied.
NOTE 3: In each of the bands 4 879,5 MHz to 4 981,5 MHz, 6 506,0 MHz to 6 642,0 MHz
and 8 132,5 MHz to 8 302,5 MHz the maximum EIRP in one, and only one, 100 kHz
measurement bandwidth shall not exceed 72 dBpW. In the band 9 759,0 MHz to
9 963,0 MHz the maximum power in one, and only one, 100 kHz measurement bandwidth
shall not exceed 61 dBpW. Elsewhere in these bands the power limit in this table shall be
applied.

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Table 2b: Limits of unwanted emissions above 1 000 MHz
and outside the bands 1 626,5 MHz to 1 645,5 MHz and 1 656,6 MHz to 1 660,5 MHz
applicable from 1 June 2002
Frequency range Carrier-on Carrier-off
(MHz) EIRP limit Measurement EIRP limit Measurement
(dBpW) bandwidth (kHz) (dBpW) bandwidth (kHz)
1 000 to 1 525 49 100 48 100
1 525 to 1 559 49 100 17 3
1 559,0 to 1 580,42 50 1 000 50 1 000
1 580,42 to 1 605,0 50 1 000 50 1 000
1 605,0 to 1 610,0 (note 4) 100 (note 5) 100
1 610,0 to 1 626,0 74 100 48 100
1 626 to 1 626,5 84 3 48 100
1 645,5 to 1 645,6 104 3 57 3
1 645,6 to 1 646,1 84 3 57 3
1 646,1 to 1 655,9 74 3 57 3
1 655,9 to 1 656,4 84 3 57 3
1 656,4 to 1 656,5 104 3 57 3
1 660,5 to 1 661 84 3 48 100
1 661 to 1 690 74 100 48 100
1 690 to 3 400 49 100 48 100
(note 2)
3 400 to 10 700 55 100 48 100
(note 3)
10 700 to 21 200 61 100 54 100
21 200 to 40 000 67 100 60 100
NOTE 1: The lower limits shall apply at the transition frequencies.
NOTE 2: In the band 3 253,0 MHz to 3 321,0 MHz the maximum EIRP in one, and only one, 100 kHz
measurement bandwidth shall not exceed 82 dBpW. Elsewhere in this band the power limit in
this table shall be applied.
NOTE 3: In each of the bands 4 879,5 MHz to 4 981,5 MHz, 6 506,0 MHz to 6 642,0 MHz and
8 132,5 MHz to 8 302,5 MHz the maximum EIRP in one, and only one, 100 kHz measurement
bandwidth shall not exceed 72 dBpW. In the band 9 759,0 MHz to 9 963,0 MHz the maximum
power in one, and only one, 100 kHz measurement bandwidth shall not exceed 61 dBpW.
Elsewhere in these bands the power limit in this table shall be applied.
NOTE 4: Linearly interpolated from 40 dBpW in 100 kHz at 1 605,0 MHz to 74 dBpW in 100 kHz at
1 610,0 MHz.
NOTE 5: Linearly interpolated from 40 dBpW in 100 kHz at 1 605,0 MHz to 48 dBpW in 100 kHz at
1 610,0 MHz.
4.1.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 5.1.
4.2 Maximum unwanted emission within the bands
4.2.1 Justification
Protection of satellite and terrestrial services operating in the 1 626,5 MHz to 1 645,5 MHz and
1 656,5 MHz to 1 660,5 MHz frequency bands.
4.2.2 Specification
Specification 1: carrier-on state

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TBR 26: May 1998
The EIRP of the unwanted emissions in any 3 kHz bandwidth within the bands 1 626,5 MHz to
1 645,5 MHz and 1 656,5 MHz to 1 660,5 MHz shall not exceed the limits in table 3.
Table 3: Limits of unwanted emission within the operating band with carrier-on
Offset from the edge of the band of the nominated bandwidth Maximum EIRP
(kHz) (dBpW)
0 117
100 104
200 84
greater than 700 74
Specification 2: carrier-off state
The EIRP spectral density of any emission within the bands 1 626,5 MHz to 1 645,5 MHz and 1 656,5 MHz
to 1 660,5 MHz shall not exceed 57 dBpW in any 3 kHz band.
4.2.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 5.1.
4.3 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, Council Directive 83/336/EEC [4]. Upon publication of
the product specific harmonized EMC standard compliance with that standard will give presumption of
compliance with the EMC Directive, Council Directive 83/336/EEC [4].
4.4 Control and Monitoring Functions (CMFs)
The following minimum set of CMFs shall be implemented in LMESs in order to minimize the probability
that they 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.
4.4.1 Processor monitoring
4.4.1.1 Justification
To ensure that the LMES can suppress transmissions in the event of a processor sub-system failure.
4.4.1.2 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 (CMF).
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.
4.4.1.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 5.2.

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4.4.2 Transmit subsystem monitoring
4.4.2.1 Justification
To ensure the correct operation of the transmit frequency generation sub-system and to inhibit
transmissions should the sub-system fail.
4.4.2.2 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.
4.4.2.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 5.2.
4.4.3 Power-on/Reset
4.4.3.1 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.
4.4.3.2 Specification
During and following "power on" or a manual reset when this function is implemented, the LMES shall
remain in the carrier-off state.
4.4.3.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 5.2.
4.4.4 Control Channel reception
4.4.4.1 Justification
To ensure that the LMES cannot transmit unless it correctly receives the Control Channel messages from
the Network Control Facility (NCF).
4.4.4.2 Specification
a) Without correct reception of the Control Channel (CC) messages from the NCF, the LMES shall
remain in the carrier-off state.
b) The LMES shall enter the carrie
...