SIST TBR 041:1999

• Abstract:

  This TBR specifies those technical requirements under Article 4 of Council Directive 93/97/EEC [1] that apply to Mobile Earth Station (MES) equipment with both transmit and receive capabilities for operation in a Satellite - Personal Communications Network (S-PCN). These MESs include handheld, portable and vehicle mounted equipment or may be a component in a multi-mode treminal; they may consist of a number of modules with associated connections and user interface, or may be self contained, single units. If the MES is a component in a multi-mode terminal, this TBR applies only to the MES component of the terminal, unless otherwise stated. The frequency bands within which the MESs operate as as follows: - 1610-1626,5 MHz, (MES transmit) - 1613,8-1626,5 MHz (MES receive) and - 2483,5-2500 MHz (MES receive). The technical requirements in this TBR are in two major categories: unwanted emission: to protect terrestrial and other satellite radio services from harmful interference generated by the MES in normal use; MES control and monitoring: to speicfy the a minimum set of Control and Monitoring Functions (CMF) that shall be implemented in each MES in order to minimise the probability that they originate unwanted transmissions that may give rise to harmful interference to other systems. These requirements are taken from ETS 300 733 [3]. Network Control Facilities (NCF) for MES networks are defined by reference to ETS 300 735 [2]. This TBR does not contain the essential requirements under articles 4f and 4g for interworking via the public telecommunications network, and does not provide any guarantee of correct interworking between MES equipment. The Terminal Directive 91/263/EEC Articles 4a and 4b are covered by other Directiies and therefore, are not covered by this TBR.

• Status: Published
• Publication Date: 30-Sep-1999
• ICS: 33.060.30 - Radio relay and fixed satellite communications systems
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-1999
• Due Date: 01-Oct-1999
• Completion Date: 01-Oct-1999
• Mandate: T-313
• Ref Project: ETSI TBR 041 ed.1 (1998-02) - Satellite Personal Communications Networks (S-PCN); Mobile Earth Stations (MES), including handheld earth stations, for S-PCN in the 1,6/2,4 GHz bands under the Mobile Satellite Service (MSS); Terminal essential requirements

• Official Journal Project Relation: SIST EN 301 441:2001 - Satellite Earth Stations and Systems (SES); Harmonized EN for Mobile Earth Stations (MESs), including handheld earth stations, for Satellite Personal Communications Networks (S-PCN) in the 1,6/2,4 GHz bands under the Mobile Satellite Service (MSS) covering essential requirements under Article 3.2 of the R&TTE directive
• Effective Date: 01-Dec-2009

SIST TBR 041:1999 is a Slovenian standard published by SIST and identical to ETSI TBR 041 Edition 1. It specifies terminal essential requirements for Mobile Earth Stations (MES) used in Satellite Personal Communications Networks (S-PCN) in the 1,6/2,4 GHz bands under the Mobile Satellite Service (MSS). It is aimed at manufacturers, authorized representatives, suppliers and test laboratories that need to demonstrate that an MES can operate without causing harmful interference and can respond to network control.

What does SIST TBR 041:1999 specify?

SIST TBR 041:1999 specifies the technical requirements for MES equipment with both transmit and receive capability in S-PCN, including handheld, portable, vehicle-mounted, host-connected, semi-fixed and fixed equipment, and MES elements inside multi-mode terminals. The standard focuses on spectrum use and control functions that matter in practice for approval and testing.

The scope limits the requirements to the MES element when the MES is part of a multi-mode terminal, unless stated otherwise. It also states that the document does not set requirements for public network interworking or guarantee correct interworking between MES equipment.

The document is organized into 11 clauses and 7 annexes.

Annex	What it covers
Annex A	General test requirements, test modes, Special Test Equipment (STE), Laboratory Test Equipment (LTE), measurement uncertainty and test reports
Annex B	Environmental conditions and host-connected equipment
Annex C	Procedures for measurement of radiated emissions
Annex D	Procedures for measurement of conducted emissions
Annex E	Explanation of nominated bandwidth
Annex F	The TBR Requirements Table (TBR-RT)
Annex G	Bibliography

What are the key requirements of SIST TBR 041:1999?

SIST TBR 041:1999 is built around emission control and network-controlled behavior. The main practical effect is that an MES must stay inside declared frequency bands, keep unwanted emissions low, and stop transmitting when network control or internal monitoring says it should.

Equipment information and test configuration

Clause 4 requires the applicant to give the test laboratory enough information to set up the equipment correctly. That includes whether the MES is self-contained or host-connected, single-mode or multi-mode, what antenna arrangement it uses, how test modes are entered, which fault conditions shut down transmission, and the nominal and extreme operating voltages.

If the MES is host-connected, the applicant must also say which host-equipment test approach will be used. In practice, this matters because the way the MES is mounted or powered can change radiated emissions and how the tests are performed.

Unwanted emissions outside the operational band

Clause 5 sets limits for unwanted emissions outside the band 1 610 to 1 626,5 MHz and the adjacent 1 626,5 to 1 628,5 MHz range while the carrier is on. The limits are frequency-dependent and use either peak-hold or average measurements, depending on the band.

For testing, the MES is set to carrier-on at maximum power, the handover function is disabled, and the carrier is modulated with the declared maximum-rate test signal. In practice, this means the device is tested under a demanding transmit condition so the lab can check spurious output across a wide frequency range.

Unwanted emissions within the operational band

Clause 6 deals with unwanted emissions inside 1 610 to 1 628,5 MHz while the MES is transmitting. The standard uses different masks in tables 3, 4 and 5 depending on where the nominated bandwidth lies and whether the carrier is a CDMA carrier.

The key practical point is that the allowed emission level depends on the operating sub-band and on the offset from the nominated bandwidth edge. When more than one rule applies, the more stringent requirement is used. That matters for frequency planning, channel spacing and lab verification.

EIRP density in the operational band

Clause 7 limits the Equivalent Isotropically Radiated Power (EIRP) density in any declared operating sub-band of 1 610 to 1 626,5 MHz. The applicant must declare which sub-band and operating conditions use the mean limit and which use the peak limit.

The test is performed at the minimum and maximum transmit frequencies, and, where available, at two additional equally spaced frequencies. In practice, this checks that the transmitter stays within its declared power spectral density across the full tuning range, not just at one preferred channel.

Carrier-off emissions

Clause 8 limits emissions when the MES is powered on but not transmitting. The device must still stay below the carrier-off limits, and any periodic automatic bursts must be inhibited or measured only during the non-transmitting periods.

This matters because idle equipment can still radiate unwanted energy and interfere with other services. The clause ensures that an MES is quiet enough even when it is not actively carrying traffic.

Control and Monitoring Functions (CMF)

Clause 9 requires CMF that prevent uncontrolled transmissions. The MES must monitor its processors and transmit frequency generation subsystem, and it must shut down transmission quickly after detectable failures. It must also start in a controlled carrier-off state and remain so until it has synchronized with the correct network control channel.

The MES must respond to network control authorization and reception commands. A disable command must stop transmission within 1 s, and a frequency command must set the carrier so the entire nominated bandwidth stays inside the declared operational band. In practice, this is the safety layer that keeps the terminal from transmitting out of place or out of band.

Equipment identity and radio astronomy protection

Clause 10 requires each MES to have a unique MES Identification Code (MIC) within its S-PCN, which the user must not be able to alter through normal procedures. The MES must also be able to transmit its MIC when commanded by the network.

Clause 11 ties protection of the radio astronomy service in 1 610,6 to 1 613,8 MHz to the transmission-disable behavior already required in clause 9.3.2.1.3. That means the same control function used to stop harmful transmissions is part of the protection measure for radio astronomy.

What terms does SIST TBR 041:1999 define?

SIST TBR 041:1999 defines a focused set of terms that are central to testing and approval.

• Mobile Earth Station (MES) - The terminal equipment used in the S-PCN; it is the device under test.
• Satellite Personal Communications Network (S-PCN) - The satellite-based personal communications network for which the MES is intended.
• Mobile Satellite Service (MSS) - The service band framework in which the MES operates.
• Control and Monitoring Functions (CMF) - The functions in the MES that receive and act on network control commands and internal fault monitoring.
• Network Control Facility (NCF) - The network-side function that sends control messages to the MES.
• Special Test Equipment (STE) - Equipment used by the lab to place the MES in the required test modes and simulate network control.
• Equivalent Isotropically Radiated Power (EIRP) - The radiated power measure used for the emission limits in the standard.

Who uses SIST TBR 041:1999?

SIST TBR 041:1999 is used by MES manufacturers, their authorized representatives, and suppliers who need to place equipment on the European market or seek approval. It is also used by accredited test laboratories that perform conformance testing and write test reports.

In practice, it is relevant to engineers and quality managers working on S-PCN terminals, especially where antenna configuration, host integration, multi-mode behavior, and network-controlled shutdown have to be demonstrated.

What changed in SIST TBR 041:1999 from the previous edition?

SIST TBR 041:1999 is identical to TBR 041 Edition 1.

Which standards are used with SIST TBR 041:1999?

SIST TBR 041:1999 names several companion publications that support its tests and terminology.

• CCITT Recommendation O.153 (1988) - provides the characteristics of the pseudo-random bit sequence used as the test modulating signal.
• ETS 300 733 - is named in the scope as the source of the technical requirements from which this TBR takes its MES rules.
• ETS 300 735 - is named as the reference for Network Control Facilities (NCF) for S-PCN MES networks.

What does the SIST TBR 041:1999 document contain?

SIST TBR 041:1999 contains limit tables, test methods and setup descriptions for radiated and conducted measurements. It gives the procedures for peak and average measurement, including spectrum-analyzer settings, sweep conditions, bandwidths, noise-floor checks and how to treat burst transmissions.

The annexes provide the practical test framework: annex A defines test modes, STE use, LTE uncertainty and the test report; annex B gives temperature, voltage and vibration conditions, plus the host-connected equipment approaches; annexes C and D give the measurement arrangements for radiated and conducted emissions; and annex E explains how to choose the nominated bandwidth so the emission mask and tuning range fit together.

Annex F is the TBR Requirements Table used to map the clause requirements to essential-requirement categories, and annex G lists the bibliography used by the document.

SLOVENSKI STANDARD
01-oktober-1999
6DWHOLWVNDRVHEQDNRPXQLNDFLMVNDRPUHåMD63&10RELOQH]HPHOMVNHSRVWDMH
0(6YNOMXþQR]URþQLPLSUHQRVQLPL]HPHOMVNLPLSRVWDMDPL]DVDWHOLWVNDRVHEQD
NRPXQLNDFLMVNDRPUHåMD63&1YIUHNYHQþQLKSDVRYLK*+]YRNYLUX
PRELOQHVDWHOLWVNHVWRULWYH0662VQRYQHWHKQLþQH]DKWHYH]DWHUPLQDOH
Satellite Personal Communications Networks (S-PCN); Mobile Earth Stations (MES),
including handheld earth stations, for S-PCN in the 1,6/2,4 GHz bands under the Mobile
Satellite Service (MSS); Terminal essential requirements
Ta slovenski standard je istoveten z: TBR 041 Edition 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.

TECHNICAL TBR 41
BASIS for February 1998
REGULATION
Source: SES Reference: DTBR/SES-00017
ICS: 33.020
Key words: Satellite, mobile, earth station, MES, S-PCN, MSS, type approval
Satellite Personal Communications Networks (S-PCN);
Mobile Earth Stations (MESs), including handheld earth stations,
for S-PCN in the 1,6/2,4 GHz bands under the
Mobile Satellite Service (MSS);
Terminal essential requirements
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 1998. All rights reserved.

Page 2
TBR 41: February 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.

Page 3
TBR 41: February 1998
Contents
Foreword .7
1 Scope .9
2 Normative references.10
3 Definitions and abbreviations .10
3.1 Definitions .10
3.2 Abbreviations .11
4 General.12
4.1 Presentation of equipment for testing purposes .12
4.2 Description of equipment .12
4.3 Host-connected equipment.13
5 Unwanted emissions outside the band 1 610 to 1 626,5 MHz and the band 1 626,5 to
1 628,5 MHz (carrier-on) .13
5.1 Justification .13
5.2 Purpose.13
5.3 Conformance requirements .13
5.4 Method of test .14
5.4.1 Peak measurement.14
5.4.2 Average measurement.15
5.5 Test requirements.15
6 Unwanted emissions within the band 1 610 to 1 626,5 MHz and the band 1 626,5 to
1 628,5 MHz (carrier-on) .15
6.1 Justification .15
6.2 Purpose.16
6.3 Conformance requirements .16
6.4 Method of test .17
6.4.1 Measurement method .18
6.5 Test requirements.18
7 EIRP density within the operational band.18
7.1 Justification .18
7.2 Purpose.19
7.3 Conformance requirements .19
7.4 Method of test .19
7.4.1 Peak limit test.20
7.4.2 Mean limit test .20
7.5 Test requirements.20
8 Unwanted emissions in carrier-off state.21
8.1 Justification .21
8.2 Purpose.21
8.3 Conformance requirements .21
8.4 Method of test .21
8.4.1 Measurement method .22
8.5 Test requirements.22
9 MES Control and Monitoring Functions (CMF) .22
9.1 Special Test Equipment (STE) .22
9.2 Self-monitoring functions .22
9.2.1 Processor monitoring .22
9.2.1.1 Justification.22
9.2.1.2 Purpose .22

Page 4
TBR 41: February 1998
9.2.1.3 Conformance requirements . 22
9.2.1.4 Method of test . 23
9.2.2 Transmit frequency generation sub-system monitoring. 23
9.2.2.1 Justification . 23
9.2.2.2 Purpose. 23
9.2.2.3 Conformance requirements . 23
9.2.2.4 Method of test . 23
9.3 Network control authorization and reception. 23
9.3.1 Network control authorization . 23
9.3.1.1 Justification . 23
9.3.1.2 Purpose. 23
9.3.1.3 Conformance requirements . 24
9.3.1.4 Method of test . 24
9.3.1.5 Test procedure. 24
9.3.1.6 Test requirement. 24
9.3.2 Network control reception. 25
9.3.2.1 Transmission disable/enable . 25
9.3.2.1.1 Justification . 25
9.3.2.1.2 Purpose. 25
9.3.2.1.3 Conformance requirements . 25
9.3.2.1.4 Method of test . 25
9.3.2.1.5 Test procedure. 25
9.3.2.1.6 Test requirement. 26
9.3.2.2 Transmit frequency control . 26
9.3.2.2.1 Justification . 26
9.3.2.2.2 Purpose. 26
9.3.2.2.3 Conformance requirements . 26
9.3.2.2.4 Method of test . 26
9.3.2.2.5 Test procedure. 26
9.3.2.2.6 Test requirement. 27
9.4 Fellow radio stations in a dual-mode or multi-mode terminal. 27
9.4.1 Justification. 27
9.4.2 Purpose . 27
9.4.3 Conformance requirements. 27
9.4.4 Method of test. 27
9.4.5 Test procedure. 27
9.4.6 Test requirements. 27
10 Equipment identity . 27
10.1 Justification. 27
10.2 Purpose. 27
10.3 Conformance requirements . 28
10.4 Method of test. 28
10.5 Test procedure . 28
10.6 Test requirements . 28
11 Protection of the radio astronomy service operation in the band 1 610,6 to 1 613,8 MHz . 28
11.1 Justification. 28
11.2 Purpose. 28
11.3 Conformance requirements . 28
11.4 Method of test. 28
11.5 Test procedure . 29
11.6 Test requirement. 29
Annex A (normative): General test requirements . 30
A.1 MES test modes . 30
A.2 Special Test Equipment (STE) . 30
A.2.1 STE description. 30
A.2.2 Use of STE for control and monitoring functions tests. 30
A.2.3 Test modulating signal . 31

Page 5
TBR 41: February 1998
A.3 Laboratory Test Equipment (LTE).31
A.4 Methods of test for MES RF emissions.32
A.5 Interpretation of the measurement results .32
A.6 Test report.32
Annex B (normative): Environmental conditions and host connected equipment.33
B.1 General.33
B.2 Environmental requirements .33
B.2.1 Temperature .33
B.2.2 Voltage.33
B.2.3 Vibration.33
B.3 Environmental test conditions .33
B.3.1 Specification of the environmental test conditions.33
B.3.2 Tests under extreme voltage conditions.34
B.4 Testing of host-connected equipment and plug-in modules .34
B.4.1 Alternative A: combined equipment .34
B.4.2 Alternative B: use of a test jig .34
Annex C (normative): Procedures for measurement of radiated emissions .35
C.1 General.35
C.1.1 Test site .35
C.1.2 Test set up for radiated emissions of the MES.35
C.1.3 Reference position of the MES .36
C.2 Measurement procedure for radiated emissions (peak) .36
C.2.1 Measurement procedure for peak radiated emissions of the MES.36
C.2.2 Measurement procedure for peak radiated emissions of the cabinet.38
C.3 Measurement procedure for radiated emissions (average) .38
C.3.1 Measurement procedure for average radiated emissions of the MES .38
C.3.2 Measurement procedure for average radiated emissions of the cabinet.39
Annex D (normative): Procedures for measurement of conducted emissions.40
D.1 General.40
D.1.1 Test site .40
D.1.2 Test set-up.40
D.2 Measurement procedure for conducted emissions (peak).40
D.3 Measurement procedure for conducted emissions (average).41

Page 6
TBR 41: February 1998
Annex E (informative): Explanation of nominated bandwidth. 42
E.1 Introduction. 42
E.2 Interpretation of Parameters [B , f , a, b]. 42
n c
E.3 Choice of nominated bandwidth . 42
E.4 Maximum value for nominated bandwidth.44
Annex F (normative): The TBR Requirements Table (TBR-RT) . 46
Annex G (informative): Bibliography . 47
History. 48

Page 7
TBR 41: February 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 Standard, 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.
Technical specifications relevant to the SES Directive are given in annex F.

Page 8
TBR 41: February 1998
Blank page
Page 9
TBR 41: February 1998
1 Scope
This Technical Basis for Regulation (TBR) specifies those technical requirements under Article 4 of
Council Directive 93/97/EEC (SES Directive), supplementing Council Directive 91/263/EEC (TTE
Directive), in respect of satellite earth station equipment that apply to Mobile Earth Station (MES)
equipment with both transmit and receive capabilities for operation in a Satellite-Personal
Communications Network (S-PCN), in one or more of the Mobile Satellite Service (MSS) frequency bands
given in table 1.
Table 1: Mobile Satellite Service (MSS) frequency bands
MSS frequency bands
MESs transmit 1 610 - 1 626,5 MHz
MESs receive 1 613,8 - 1 626,5 MHz
2 483,5 - 2 500 MHz
An S-PCN MES may be a handheld, portable, vehicle-mounted, host connected, semi-fixed or fixed
equipment, or may be an element in a multi-mode terminal. It may consist of a number of modules with
associated connections and user interface, or may be a self contained single unit.
If the MES is an element in a multi-mode terminal, unless otherwise stated in this TBR, its requirements
apply only to the S-PCN MES element of the terminal operating in one or more of the MSS frequency
bands given in table 1.
The technical requirements in this TBR are applied under Articles 4.1 and 4.3 of the SES Directive
referencing Article 4(e) of the TTE Directive, concerning effective use of the radio frequency spectrum,
including the effective use of orbital resources and the avoidance of harmful interference between space-
based and terrestrial communications systems and other technical systems. These requirements are in
two major categories:
emissions limits: to protect other radio services from harmful interference generated by the MES in
normal use;
MES Control and Monitoring Functions (CMF): to protect other radio services from unwanted
transmissions from the MES. The CMF in each MES is capable of answering to commands from the
Network Control Facilities (NCF) for its S-PCN.
NOTE: The requirements for Network Control Facilities (NCF) for S-PCN are contained in
ETS 300 735 (see annex G).
There are no technical requirements in this TBR under:
- Articles 4.1 and 4.4 of the SES Directive, referencing Article 4(c) of the TTE Directive as there are
no EMC requirements specific to the S-PCN MESs, nor under:
- Article 4.1 of the SES Directive, referencing Article 4(d) of the TTE Directive;
- Articles 4.1 and 4.5 of the SES Directive, referencing Article 4(f) of the TTE Directive;
- Articles 4.1 and 4.6 of the SES Directive, referencing Article 4(g) of the TTE Directive;
as, for the purposes of the SES Directive and the TTE Directive, the radio interface between the MES and
the S-PCN network is not regarded as a network termination point of a public telecommunications
network.
An MES may be subject to additional or alternative requirements in other TBRs depending on its
functionality, in particular if it supports a service which is considered a justified case for regulation of
terminal equipment interworking via the public telecommunications network.

Page 10
TBR 41: February 1998
2 Normative references
This TBR incorporates, by dated or undated reference, provisions from other publications. These
normative 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 in it by amendment or revision. For undated references the
latest edition of the publication referred to applies.
[1] CCITT Recommendation O.153 (1988): "Characteristics of distortion and error-
rate measuring apparatus for data transmission".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this TBR, the following definitions apply:
applicant: A party seeking an approval, or to place an S-PCN MES on the European market, i.e. the
manufacturer of the equipment, or his authorized representative, or an equipment supplier to the
European market.
carrier-on state (allocated a channel): An MES is in this state when it is transmitting a signal in a
continuous or non-continuous mode.
carrier-off state (idle mode): An MES is in this state when it is powered-on but not transmitting a signal,
i.e. not in the carrier-on state.
conducted measurement: A measurement of emissions from an antenna port of the MES made by
direct wired connection to the port.
Equivalent Isotropically Radiated Power (EIRP): The product of transmitter power and maximum
antenna gain, equivalent to an isotropic source radiating uniformly in all directions.
handheld: Indicates a PE MES which is self-contained and is small enough and light enough to be carried
and used during a call with one hand.
host-connected: Indicates an MES for which connection to or integration with host equipment is
necessary to offer functionality.
host equipment: Is any equipment which has a complete user functionality when not connected to the
MES, and to which the MES provides additional functionality, and to which connection is necessary for the
MES to offer functionality.
Installable Equipment (IE), Internally Mounted Equipment (IME) And Externally Mounted
Equipment (EME): An Installable Equipment (IE) is an equipment which is intended to be installed in a
vehicle. An IE may consist of one or several interconnected modules. The IE is composed of modules
intended to be externally mounted as declared by the applicant, and defined as Externally Mounted
Equipment (EME) and the remaining modules(s) as Internally Mounted Equipment (IME).
Laboratory Test Equipment (LTE): A logical grouping that contains the standard test equipment
provided by a test laboratory.
MSS band: A continuous range of frequencies allocated by the ITU to the MSS.
multi-mode: Indicates equipment that accommodates radio stations of different radio networks.
narrow-band system: A narrow-band system is one in which the nominal carrier frequency spacing for
MESs in the earth-to-space direction is less than 300 kHz.
network control channel: A channel by which an MES receives general control information from the
NCF of its S-PCN.
Page 11
TBR 41: February 1998
NCF control message: A message, normally originating from a network, to a specified terminal or set of
terminals of the network which indicates to the terminal or set of terminals that it/they should carry out
some specific action or should enter or maintain some specific state. For test purposes NCF control
messages may originate from Special Test Equipment (STE).
nominated bandwidth (B ): The B of the Mobile Earth Station (MES) radio frequency transmission is
n n
wide enough to encompass all spectral elements of the transmission which have a level greater than the
specified levels of unwanted emissions. The B is defined relative to the MES actual carrier frequency f .
n c
B is the width of the frequency interval (f -a, f +b), where a and b, which shall be specified by the
n c c
applicant, may vary with f .
c
The frequency interval (f -a, f +b) shall not encompass more than either:
c c
i) when a = b, 4 nominal carrier frequencies for narrow-band systems
ii) when a „ b, 1 nominal carrier frequency for narrow-band systems, or
iii) 1 nominal carrier frequency for wide-band systems.
The frequency interval (f -a, f +b) shall be within the operational band of the MES.
c c
operational band: The sub-portion of the 1 610 to 1 626,5 MHz band which has been assigned in the
earth-to-space direction to the MSS network within which the MES is operating.
Portable Equipment (PE): A Portable Equipment (PE) is generally intended to be self-contained, free
standing and portable. A PE would normally consist of a single module, but may consist of several
interconnected modules.
radiated measurement: A measurement of an actual radiated field.
Special Test Equipment (STE): Equipment which allows a test laboratory to control the MES so that the
tests required by this TBR can be performed.
test laboratory: A laboratory authorized by an accreditation body, which performs conformance testing in
accordance with the SES and TTE directives.
test load: The test load is a substantially non-reactive, non-radiating power attenuator which is capable of
safely dissipating the power from the transmitter(s).
unwanted emissions: Unwanted emissions are those falling outside the nominated bandwidth in the
carrier-on state, and those generated in the carrier-off state.
wide-band system: A wide-band system is one in which the nominal carrier frequency spacing for MESs
in the Earth-to-Space direction is equal to or greater than 300 kHz.
3.2 Abbreviations
For the purposes of this TBR, the following abbreviations apply:
AC Alternating Current
B nominated Bandwidth
n
CCITT Comité Consultatif International Télégraphique et Téléphonique (now ITU-T)
CDMA Code Division Multiple Access
CMF Control and Monitoring Functions
dBW deciBels relative to 1 Watt
EIRP Equivalent Isotropically Radiated Power
EMC Electro-Magnetic Compatibility
EME Externally Mounted Equipment
IE Installable Equipment
IEC International Electrotechnical Commission/Committee
IME Internally Mounted Equipment
ITU International Telecommunications Union
LTE Laboratory Test Equipment
Page 12
TBR 41: February 1998
MES Mobile Earth Station
MSS Mobile Satellite Service
MIC MES unique Identification Code (within its S-PCN)
NCF Network Control Facility
PE Portable Equipment
RF Radio Frequency
SES Satellite Earth Stations and Systems or, in the case of the SES Directive,
Satellite Earth Station
S-PCN Satellite Personal Communications Network
STE Special Test Equipment
TDMA Time Division Multiple Access
TTE Telecommunications Terminal Equipment
4 General
4.1 Presentation of equipment for testing purposes
The applicant may provide to a test laboratory one or more preliminary or production models of the MES
equipment, as appropriate, for testing for conformance against the technical requirements of this TBR.
If the MES is intended for use with an active antenna, this shall be provided as part of the MES.
If a statement of conformance with the TBR is given by the test laboratory on the basis of tests on a
preliminary model, then the statement of conformance shall apply to corresponding production models
only if they are identical in all technical respects with the preliminary model tested.
4.2 Description of equipment
The applicant shall provide to the test laboratory a statement which contains all of the information related
to the MES and its testing environment which will enable the test laboratory to run an appropriate test suite
against the MES.
This shall include:
- Self contained or host-connected;
- Single-mode or multi-mode;
- Antenna:
- active or;
- passive, with an antenna port available or;
- passive, no antenna port available.
NOTE 1: If the MES has an active antenna, the antenna is regarded as an integral part of the
MES.
NOTE 2: If the MES is intended for use with a passive antenna, the maximum gain of any
antenna intended to be used with the equipment is to be stated.
- The method by which the equipment can be switched into its test modes.
NOTE 3: If Special Test Equipment (STE) is required see annex A, clause A.2.
- The fault conditions which cause transmission shut-down;
- The nominal, the lower extreme and the higher extreme operational voltages;
- In the case of a multi-mode MES, the other modes of operation;
- If the conducted emission measurements are to be performed:
- the gain at the frequency of the measured spurious emission, according to the choice of the
applicant.
Page 13
TBR 41: February 1998
- In an information leaflet, for each S-PCN for which the MES is designed to operate:
1) the name of the S-PCN;
2) the maximum value of nominated bandwidth for that S-PCN, as defined by the network
operator;
3) the a and b values of the nominated bandwidth for each nominal carrier frequency of the
MES;
4) the operating frequency range(s) of the MES;
5) The frequency sub-bands and operating conditions for which the different EIRP density limits
apply;
6) the maximum gross data rate at which the MES is designed to operate;
7) the agreement of the network operator to the above information.
4.3 Host-connected equipment
For testing of equipment for which connection to, or integration with, host equipment is required to offer
functionality, the applicant shall supply a statement indicating which of the test configurations detailed in
clause B 4 shall be used.
5 Unwanted emissions outside the band 1 610 to 1 626,5 MHz and the band
1 626,5 to 1 628,5 MHz (carrier-on)
5.1 Justification
This requirement is justified under SES Directive Articles 4.1 and 4.3.
5.2 Purpose
Protection of other radio services operating outside the band 1 610 to 1 628,5 MHz from emissions
caused by S-PCN MESs operating within the band 1 610 to 1 626,5 MHz.
5.3 Conformance requirements
The maximum EIRP density of the unwanted emissions from the MES outside the band 1 610,0 to
1 626,5 MHz and the band 1 626,5 to 1 628,5 MHz shall not exceed the limits in table 2.
In table 2, whenever a change of limit between adjacent frequency bands occurs, the lower of the two
limits shall apply at the transition frequency.

Page 14
TBR 41: February 1998
Table 2: Maximum unwanted emissions outside the band 1 610 to 1 626,5 MHz and the band
1 626,5 to 1 628,5 MHz
Frequency Carrier-on
(MHz) EIRP (dBW) Measurement bandwidth Measurement method
0,1 - 30 -66 10 kHz Peak-hold
30 - 1 000 -66 100 kHz Peak-hold
1 000 - 1 559 -60 1 MHz Average
1 559 - 1 580,42 -70 1 MHz Average
(note 1)
1 580,42 - 1 605 -70 1 MHz Average
1 605 - 1 610 -70 to -10 1 MHz Average
(note 2)
1 610 - 1 626,5 Not applicable Not applicable Not applicable
1 626,5 - 1 628,5 Not applicable Not applicable Not applicable
1 628,5 - 1 631,5 -60 30 kHz Average
1 631,5 - 1 636,5 -60 100 kHz Average
1 636,5 - 1 646,5 -60 300 kHz Average
1 646,5 -1 666,5 -60 1 MHz Average
1 666,5 - 2 200 -60 3 MHz Average
2 200 - 12 750 -60 3 MHz Peak hold
NOTE 1: In the sub-band 1573,42 - 1580,42 MHz, the average measurement time is 20 ms.
NOTE 2: Linearly interpolated in dBW vs. frequency offset.
The conformance requirements apply for the full range of environmental conditions corresponding to the
type of equipment as specified in clause B.2.
5.4 Method of test
This test shall be carried out for the minimum and for the maximum MES transmit frequencies for which
the MES is designed to operate, as specified by the applicant.
The environmental test conditions are given in clause B.3.
For each test, the MES shall be set to transmit (carrier-on) on one of the specified transmitting
frequencies to be tested at its maximum power for that transmit frequency, by means of the STE or by
another test facility provided by the applicant.
If there is a handover function in the MES (to allow change of frequency channel during a call), this
function shall be disabled.
The transmitted carrier shall be modulated by a test signal at maximum rate as specified in
subclause A.2.3.
In the test equipment, the spectrum analyzer noise floor shall be at least 6 dB below the appropriate limits
given in table 2.
The measurements are performed with the radiated or with the conducted method according to the cases
defined in clause A.4.
For measurements of radiated unwanted emissions, annex C applies.
For measurements of conducted unwanted emissions, annex D applies.
5.4.1 Peak measurement
In the case of peak measurement, the spectrum analyzer shall be set in sweep mode and shall be
operated under the following conditions:

Page 15
TBR 41: February 1998
frequency sweep: as required for frequency range to be assessed;
resolution bandwidth: measurement bandwidth specified in table 2;
display bandwidth: at least three times the measurement bandwidth;
averaging: no;
peak hold: yes.
The sweep time shall be the shortest possible time consistent with proper calibration and ease of
operation.
The spectrum analyzer shall be stepped over the frequency ranges specified in table 2 for peak
measurement.
5.4.2 Average measurement
In the case of average measurement, the spectrum analyzer shall be set in sweep mode and shall be
operated under the following conditions:
frequency sweep: as required for frequency range to be assessed;
resolution bandwidth: measurement bandwidth specified in table 2;
display bandwidth: equal to the measurement bandwidth;
averaging: yes;
peak hold: no.
The measurement time shall be such that the difference of the measured levels, averaged over
subsequent measurement samples, is less than 1 dB, or a measurement time of 100 ms may be used if
the measured values comply with the applicable limits.
For a MES operating in a non-continuous carrier mode, the measurement shall be performed over the
active part of the transmitted bursts. The total sample time used for measurement shall be not less than
40 % of the duration of the active part of the transmitted burst. The measurement shall be made over the
random part of the burst, excluding any preambles or synchronization sequences.
The spectrum analyzer shall be stepped over the frequency ranges specified in table 2 for average
measurement.
5.5 Test requirements
For measurements of radiated unwanted emissions of the MES, the measured values shall in no case
exceed the limits given in table 2.
For measurements of conducted unwanted emissions of the MES, the measured values plus the
maximum antenna gain shall in no case exceed the limits given in table 2.
6 Unwanted emissions within the band 1 610 to 1 626,5 MHz and the band
1 626,5 to 1 628,5 MHz (carrier-on)
6.1 Justification
This requirement is justified under SES Directive Articles 4.1 and 4.3.

Page 16
TBR 41: February 1998
6.2 Purpose
Protection of radio services and systems operating within the frequency band 1 610 to 1 628,5 MHz from
unwanted emissions caused by S-PCN MESs operating in the band 1 610 to 1 626,5 MHz.
6.3 Conformance requirements
The maximum EIRP spectral density of the unwanted emissions from the MES within the band 1 610 to
1 628,5 MHz shall not exceed the limits in tables 3, 4 or 5, as applicable.
In the tables 3, 4 and 5, whenever a change of limit between adjacent frequency bands occurs, the lower
of the two limits shall apply at the transition frequency.
When conflicts between multiple requirements exist, the more stringent requirement applies.
Table 3: Maximum unwanted emissions within the band 1 610,0 to 1 626,5 MHz and the band
1 626,5 to 1 628,5 MHz of MES operating such that the nominated bandwidth is entirely or partially
contained in the frequency band 1 618,25 to 1 626,5 MHz
Carrier - on
Frequency offset (kHz) EIRP (dBW) Measurement bandwidth (kHz) Measurement
method
(note 1) (note 3) (note 2)
0 to 160 -35 30 Average
160 to 225 -35 to -38,5 30 Average
225 to 650 -38,5 to -45 30 Average
650 to 1 365 -45 30 Average
1 365 to 1 800 -53 to -56 30 Average
1 800 to 16 500 -56 30 Average
NOTE 1: Frequency offset is determined from:
i) the nearest edge of the nominated bandwidth of the nominal carrier closest to the
MSS system operating in another operational band within the band 1 610 to
1 626,5 MHz. The frequency offset is measured in the direction of the adjacent
MSS system.
ii) the upper edge of the nominated bandwidth of the carrier under test for emissions
within the band 1 626,5 to 1 628,5 MHz.
NOTE 2: The measurement bandwidth used may be 3 kHz if the unwanted EIRP limits are reduced
correspondingly.
NOTE 3: Linearly interpolated in dBW vs. frequency offset.

Page 17
TBR 41: February 1998
Table 4: Maximum unwanted emissions within the band 1 610,0 to 1 626,5 MHz and the band
1626,5 to 1628,5 MHz of MES operating such that the nominated bandwidth is entirely contained in
the frequency band 1 610,0 to 1 618,25 MHz
Carrier - on
Frequency offset (kHz) EIRP (dBW) Measurement bandwidth (kHz) Measurement
method
(note 1) (note 3) (note 2)
0 to 160 -32 30 Average
160 to 2 300 -32 to -56 30 Average
2 300 to 18 500 -56 30 Average
NOTE 1: Frequency offset is determined from:
i) the nearest edge of the nominated bandwidth of the nominal carrier closest to the MSS
system operating in another operational band within the band 1 610 to 1 626,5 MHz The
frequency offset is measured in the direction of the adjacent MSS system.
ii) the upper edge of the nominated bandwidth of the carrier under test for emissions within
the band 1 626,5 to 1 628,5 MHz.
NOTE 2: The measurement bandwidth used may be 3 kHz if the unwanted EIRP limits are reduced
correspondingly.
NOTE 3: Linearly interpolated in dBW vs. frequency offset.
Table 5: Maximum unwanted emissions of MES carriers within the operational band of CDMA
carriers
Carrier - on
Frequency offset (kHz) EIRP (dBW) Measurement bandwidth Measurement
(kHz) method
(note 1) (note 2)
0 to 70 -6 to -20 30 Average
70 to 600 -20 to -28 30 Average
600 to 2 000 -28 to -45 30 Average
2 000 to 5 000 -45 to -69 30 Average
5 000 to 16 500 -69 30 Average
NOTE 1: Frequency offset is determined from edge of nominated bandwidth.
NOTE 2: Linearly interpolated in dBW vs. frequency offset.
The conformance requirements apply for the full range of environmental conditions corresponding to the
type of equipment as specified in clause B.2.
6.4 Method of test
This test shall be carried out for the minimum and for the maximum MES transmit frequency for which the
MES is designed to operate, as specified by the applicant.
Where available, up to two additional transmit frequencies shall also be tested. These frequencies shall be
equally spaced between the minimum and maximum transmit frequencies. The transmit frequencies used
for the test shall be entered in the test report.
The environmental test conditions are given in clause B.3.
For each test, the MES shall be set to transmit (carrier-on) on one of the specified transmit frequencies to
be tested, at its maximum power for that transmit frequency, by means of the STE or by another test
facility provided by the applicant.

Page 18
TBR 41: February 1998
If there is a handover function in the MES (to allow change of frequency channel during a call), this
function shall be disabled.
The transmitted carrier shall be modulated by a test signal at maximum rate as specified in
subclause A.2.3.
In the test equipment, the spectrum analyzer noise floor shall be at least 6 dB below the appropriate limits
given in tables 3, 4 or 5 as applicable.
The measurements are perfor
...