ETSI EN 301 430 V1.1.1 (2000-05)

SLOVENSKI STANDARD
01-september-2001
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Satellite Earth Stations and Systems (SES); Harmonized EN for Satellite News
Gathering Transportable Earth Stations (SNG TES) operating in the 11-12/13-14 GHz
frequency bands covering essential requirements under article 3.2 of the R&TTE
directive
Ta slovenski standard je istoveten z: EN 301 430 Version 1.1.1
ICS:
33.070.40 Satelit Satellite
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 Satellite News Gathering
Transportable Earth Stations (SNG TES)
operating in the 11-12/13-14 GHz frequency bands
covering essential requirements under article 3.2
of the R&TTE directive
2 ETSI EN 301 430 V1.1.1 (2000-05)
Reference
DEN/SES-000-TBR30
Keywords
satellite, earth station, SNG, regulation
ETSI
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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 2000.
All rights reserved.
ETSI
3 ETSI EN 301 430 V1.1.1 (2000-05)
Contents
Intellectual Property Rights.5
Foreword .5
Introduction .5
1 Scope.8
2 References.9
3 Definitions and abbreviations .9
3.1 Definitions.9
3.2 Abbreviations .10
4 Technical requirement specifications .11
4.1 Environmental profile.11
4.2 Conformance requirements.11
4.2.1 Off-axis EIRP emission density within the band(s) .11
4.2.1.1 Justification .11
4.2.1.2 Specification.11
4.2.1.3 Conformance tests.11
4.2.2 Off-axis spurious radiation.11
4.2.2.1 Justification .11
4.2.2.2 Specification.12
4.2.2.3 Conformance tests.12
4.2.3 On-axis spurious radiation .13
4.2.3.1 Justification .13
4.2.3.2 Specification.13
4.2.3.3 Conformance tests.13
4.2.4 Mechanical (antenna pointing).13
4.2.4.1 Justification .13
4.2.4.2 Specification.13
4.2.4.3 Conformance tests.13
5 Testing for compliance with technical requirements .14
5.1 Environmental conditions for testing.14
5.2 Essential radio test suites.14
6 Test methods .14
6.1 General.14
6.2 Off-axis EIRP density within the band .15
6.2.1 Test method .15
6.2.1.1 General.15
6.2.1.2 Transmit output power density.15
6.2.1.2.1 General .15
6.2.1.2.2 Test site .15
6.2.1.2.3 Method of measurement .15
6.2.1.3 Antenna transmit gain.16
6.2.1.3.1 General .16
6.2.1.3.2 Test site .16
6.2.1.3.3 Method of measurement .16
6.2.1.4 Antenna transmit radiation patterns.17
6.2.1.4.1 General .17
6.2.1.4.2 Test site .17
6.2.1.4.3 Method of measurement .18
6.2.1.4.4 Co-polar radiation pattern - azimuth.18
6.2.1.4.5 Co-polar radiation pattern - elevation.18
6.2.1.4.6 Cross-polar radiation pattern - azimuth .19
6.2.1.4.7 Cross-polar radiation pattern - elevation .20
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4 ETSI EN 301 430 V1.1.1 (2000-05)
6.2.2 Computation of results.20
6.3 Off-axis spurious radiation .20
6.3.1 Test method .20
6.3.1.1 Up to 1,0 GHz.21
6.3.1.1.1 Test site .21
6.3.1.1.2 Measuring receivers.21
6.3.1.1.3 Procedure.21
6.3.1.2 Above 1,0 GHz .21
6.3.1.2.1 General .21
6.3.1.2.2 Identification of the significant frequencies of spurious radiation.22
6.3.1.2.2.1 Test site.22
6.3.1.2.2.2 Procedure .22
6.3.1.2.3 Measurement of radiated power levels of identified spurious radiation .22
6.3.1.2.3.1 Test site.22
6.3.1.2.3.2 Procedure .22
6.3.1.2.4 Measurement of conducted spurious radiation at the antenna flange.23
6.3.1.2.4.1 Test site.23
6.3.1.2.4.2 Procedure .23
6.4 On-axis spurious radiation.24
6.4.1 Test method .24
6.4.1.1 General.24
6.4.1.2 Method of measurement.24
6.5 Mechanical (antenna pointing) .25
6.5.1 Test method .25
7 Test methods for SNG TES subsystems .25
7.1 General .25
7.2 Antenna subsystem replacement.26
Annex A (normative): The EN Requirements Table (EN-RT) .27
Annex B (informative): Pointing stability methodology.28
Bibliography.29
History.30
ETSI
5 ETSI EN 301 430 V1.1.1 (2000-05)
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 SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect
of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server
(http://www.etsi.org/ipr).
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 SR 000 314 (or the updates on the ETSI Web server)
which are, or may be, or may become, essential to the present document.
Foreword
This Candidate Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical
Committee Satellite Earth Stations and Systems (SES).
The present document has been produced by ETSI in response to a mandate from the European Commission issued
under Council Directive 98/34/EC [4] (as amended) laying down a procedure for the provision of information in the
field of technical standards and regulations.
The present document is intended to become a Harmonized Standard, the reference of which will be published in the
Official Journal of the European Communities referencing the Directive 1999/5/EC [1] of the European Parliament and
of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual
recognition of their conformity ("the R&TTE Directive").
National transposition dates
Date of adoption of this EN: 28 April 2000
Date of latest announcement of this EN (doa): 31 July 2000
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 January 2001
Date of withdrawal of any conflicting National Standard (dow): 31 January 2001
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6 ETSI EN 301 430 V1.1.1 (2000-05)
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
Inter-working via the network*
equipment
3.3a class or type
Inter-working with the network
Use of spectrum
3.2
New radio harmonised standards
Spectrum
Scoped by frequency and/or equipment type
Radio Product EMC
Existing EMC standards to be replaced by
3.1b a new single multi-part standard
EMC
Generic and base standards also notified under EMC Directive
New standard for Health for radio
(if needed)
3.1a
Safety
Standards also notified under LVD Directive
(incl acoustic safety if needed)
Non-radio Radio (RE)
TTE Non-TTE
Figure 1: Modular structure for the various standards used under the R&TTE Directive
The left hand edge of the figure shows the different subclauses of Article 3 of the Directive.
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7 ETSI EN 301 430 V1.1.1 (2000-05)
For article 3.3 various horizontal boxes are shown. Their dotted lines indicate that no essential requirements in these
areas have yet been adopted by the Commission. If such essential requirements are adopted, they will be elaborated in
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. 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 3.1(b), the diagram shows the new single multi-part product EMC standard for radio, and the existing
collection of generic and base standards currently used under the EMC Directive. The parts of this new standard will
become available in the second half of 2000, and the existing separate EMC standards will be used until it is available.
For article 3.1(a) the diagram shows the existing safety standards currently used under the LVD Directive and the
possibility of a new standard on health relating to radio emissions
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.
The modular approach has been taken because:
- it minimizes the number of standards needed. Because equipment may 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.
The present document is based on TBR 030 [5].
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 30 [5] has
not been copied in the present document and intermodulation limits inside the transmit frequency band(s) 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
SNG TESs.
ETSI
8 ETSI EN 301 430 V1.1.1 (2000-05)
1 Scope
The present document applies to Satellite News Gathering (SNG) Transportable Earth Stations (TESs) which have the
following characteristics:
- the SNG TESs are designed for Satellite News Gathering (SNG) which can be either an unforeseen or pre-
planned activity;
- SNG TES is capable of transmitting television signals and associated audio or programme audio only towards a
satellite positioned on the geostationary orbit. The modulation method may be either analogue or digital. Such
transmissions are point-to-point or point-to-multipoint but not for general broadcast reception;
- the SNG TESs are designed for relocation at any time to a different fixed operating location but are not intended
to operate during the relocation period. The SNG TESs can be either vehicle mounted or packed for
transportation. The SNG TESs considered in the present document are those designed to operate whilst
stationary;
- the SNG TESs are operating in the following bands allocated to the Fixed Satellite Services (FSS):
- 10,70 GHz to 11,70 GHz (space-to-earth, shared);
- 12,50 GHz to 12,75 GHz (space-to-earth, exclusive);
- 12,75 GHz to 13,25 GHz (earth-to-space, shared);
- 13,75 GHz to 14,25 GHz (earth-to-space, exclusive);
- 14,25 GHz to 14,50 GHz (earth-to-space, shared).
- frequencies could be selected from through the entire frequency range or be restricted to a range completely
enclosed within those bands. These bands are partly shared between FSS and Fixed Service (FS);
- at present the ITU Radio Regulations [3] restrict the use of the 13,75 GHz to 14,00 GHz band to earth stations
having an antenna diameter of 4,5 m or greater and having a transmitting EIRP between 68 dBW and 85 dBW;
- the SNG TESs use linear polarization;
- the SNG TESs 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 SNG TES antenna diameter does not exceed 5 m, or equivalent corresponding aperture;
- the SNG TESs are designed for attended operation.
The present document applies to the SNG TES 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.
The present document is intended to cover the provisions of Directive 1999/5/EC [1] (R&TTE Directive) Article 3.2,
which states that "… radio equipment shall be so constructed that it effectively uses the spectrum allocated to
terrestrial/space radio communications and orbital resources so as to avoid harmful interference.".
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of Article 3 of the R&TTE Directive [1] may apply to equipment within the scope of the present
document.
NOTE: A list of such ENs is included on the ETSI web site.
ETSI
9 ETSI EN 301 430 V1.1.1 (2000-05)
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
• A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same
number.
[1] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications equipment and the mutual recognition of their conformity.
[2] CISPR 16-1: "Specification for radio disturbance and immunity measuring apparatus and methods
- Part 1: Radio disturbance and immunity measuring apparatus" (annex G: Validation of the open
area test site for the frequency range of 30 MHz to 1 000 MHz).
[3] ITU Radio Regulations.
[4] 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.
[5] TBR 030: "Satellite Earth Stations and Systems (SES); Satellite News Gathering (SNG)
Transportable Earth Stations (TES) operating in the 11-12/13-14 GHz frequency bands".
3 Definitions and abbreviations
3.1 Definitions
For the purpose of the present document, the terms and definitions given in the R&TTE Directive [1], and the following
terms and definitions apply.
applicant: manufacturer or his authorized representative within the European Community or the person responsible for
placing the apparatus on the market.
carrier-off state: that state where the SNG TES is electrically powered and is not transmitting a signal.
NOTE 1: A SNG TES is considered to be in the carrier-off state when one of the following conditions is satisfied:
- the High Power Amplifier (HPA) is in standby mode;
- the transmit subsystem is not switched to the antenna.
carrier-on state: that state where the SNG TES is transmitting a signal.
Environmental profile: range of environmental conditions under which equipment within the scope of the present
document is required to comply with the provisions of the present document.
exclusion band: exclusion band is centred on the transmit frequency and is equal to 5 times the occupied bandwidth.
occupied Bandwidth (B ): for a digital modulation scheme the width of the signal spectrum 10 dB below the maximum
o
inband density. For an analogue modulation scheme the occupied bandwidth (B ) is defined as follows:
o
B = ΔF +2f
o pp m
ETSI
10 ETSI EN 301 430 V1.1.1 (2000-05)
where:
ΔF = peak-to-peak frequency deviation of the TV-carrier for a 1 V peak-to-peak test tone at the pre-emphasis
pp
network cross-over frequency in Hz; and
fm = top video baseband frequency (e.g. 5 MHz).
Satellite News Gathering Transportable Earth Station (SNG TES): equipment capable of transmitting television
signals and associated audio or programme audio only towards a satellite positioned on the geostationary orbit.
The modulation method may be either analogue or digital. Such transmissions are point-to-point or point-to-multipoint
but not for general broadcast reception.
The SNG TES usually comprises the main parts, as defined below, and all power, interconnecting and other cables
required for proper operation of the equipment as follows:
a) the antenna subsystem, which converts the incident electromagnetic wave into a guided wave and vice versa and
which includes any mounting that may be required;
b) the transmit subsystem, which is composed of the frequency translation equipment and the high power amplifier;
c) the receive subsystem, which consists of the low noise amplifier and the frequency translation equipment;
d) the ground communications subsystem, which consists of modulation and demodulation equipment, either
analogue or digital, and associated baseband equipment;
e) the monitoring and control subsystem which consists of test equipment together with a transmitter identification
system if implemented;
f) the communications subsystem which consists of and a facility for two way communication if implemented;
g) the power subsystem, which consists of any power generation equipment that may be required;
h) the transportation subsystem, which consists of either a vehicle for vehicle mounted SNG TES or flight cases for
"flyaway" SNG TES.
spurious radiation: any radiation outside the exclusion band.
transmit frequency band: one of the following frequency bands, or a part of them, within which the SNG TES is able
to transmit its carrier:
- 12,75 GHz to 13,25 GHz;
- 13,75 GHz to 14,50 GHz.
The transmit frequency bands of the SNG TES are declared by the applicant.
NOTE 2: An SNG TES may be designed for several transmit frequency bands.
3.2 Abbreviations
For the purpose of the present document, the following abbreviations apply:
EIRP Equivalent Isotropically Radiated Power
EUT Equipment Under Test
HPA High Power Amplifier
LNA Low Noise Amplifier
LNB Low Noise Block
modem MODulator/DEModulator
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
SNG TES Satellite News Gathering Transportable Earth Station
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11 ETSI EN 301 430 V1.1.1 (2000-05)
4 Technical requirement specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be declared by the supplier. The equipment shall comply with all the technical requirements of
the present document at all times when operating within the boundary limits of the declared operational environmental
profile.
4.2 Conformance requirements
4.2.1 Off-axis EIRP emission density within the band(s)
Off-axis EIRP emission density (co-polar and crosspolar) within the transmit frequency band(s).
4.2.1.1 Justification
Protection of other satellite (uplink) systems.
4.2.1.2 Specification
The maximum EIRP in any 40 kHz band of the co-polarized component in any direction φ degrees from the antenna
main beam axis shall not exceed the following limits:
33 - 25 log φ dBW where 2,5°≤φ≤ 7,0°
+12 dBW where 7,0° < φ≤ 9,2°
36 - 25 log φ dBW where 9,2° < φ≤ 48°
-6 dBW where 48,0° < φ≤ 180°
Where φ is the angle, in degrees, between the main beam axis and the direction considered.
For φ > 70° the values given above may be increased to 0 dBi over the range of angles for which the particular feed
system may give rise to relatively high levels of spillover.
In addition the maximum EIRP in any 40 kHz band of the crosspolarized component in any direction φdegrees from the
antenna main beam axis shall not exceed the following limits:
23 - 25 log φ dBW where 2,5°≤φ≤ 7,0°
+2 dBW where 7,0° < φ≤ 9,2°
Where φ is the angle, in degrees, between the main beam axis and the direction considered.
4.2.1.3 Conformance tests
Conformance tests shall be carried out as per subclause 6.2.1 with the results being computed in accordance with
subclause 6.2.2.
4.2.2 Off-axis spurious radiation
4.2.2.1 Justification
To limit the level of interference to terrestrial and satellite radio services.
ETSI
12 ETSI EN 301 430 V1.1.1 (2000-05)
4.2.2.2 Specification
1) The SNG TES shall not exceed the limits for radiated field strength over the frequency range from 30 MHz to
1 000 MHz specified in table 1.
Table 1: Limits of radiated field strength
at a test distance of 10 m in a 120 kHz bandwidth
Frequency range Quasi-peak limits
(MHz) (dBµV/m)
30 to 230 30
230 to 1 000 37
The lower limits shall apply at the transition frequency.
2) This specification applies outside the exclusion band.
For the carrier-off state, the off-axis spurious EIRP from the SNG TES, in any 100 kHz band, shall not exceed
the limits given in table 2, for all off-axis angles greater than 7°:
Table 2: Limits of spurious EIRP with carrier-off
Frequency range EIRP
(GHz) (dBpW)
1,0 to 10,7
10,7 to 21,2
21,2 to 40,0
The lower limits shall apply at the transition frequencies.
3) This specification applies outside the exclusion band.
For the carrier-on state, the off-axis spurious EIRP in any 100 kHz band from the SNG TES, shall not exceed the
limits given in table 3, for all off-axis angles greater than 7°:
Table 3: Limits of spurious EIRP with carrier-on
Frequency range EIRP
(GHz) (dBpW)
1,0 - 3,4 49
3,4 - 10,7 55
10,7 - 11,7 61
78 (note)
11,7 - 21,2
21,2 - 40,0 67
NOTE: This limit may be exceeded in a frequency band which
shall not exceed 80 MHz centred on the carrier frequency.
The lower limits shall apply at the transition frequency.
In the frequency bands from 25,5 GHz to 26,5 GHz and from 27,5 GHz to 29,0 GHz, for any 20 MHz band within
which one or more spurious signals exceeding the above limit of 67 dBpW are present, then the power of each of those
spurious signals exceeding the limit shall be added in watts and the total shall not exceed 78 dBpW.
For SNG TESs designed to transmit simultaneously several different carriers (multicarrier operation), the above limits
apply to each individual carrier when transmitted alone.
4.2.2.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 6.3.
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13 ETSI EN 301 430 V1.1.1 (2000-05)
4.2.3 On-axis spurious radiation
4.2.3.1 Justification
To limit the level of interference to satellite radio services.
4.2.3.2 Specification
In the transmit frequency band outside the exclusion band the EIRP spectral density of the spurious radiation shall not
exceed 4 dBW in any 4 kHz band.
For SNG TESs designed to transmit simultaneously several different carriers (multicarrier operation), the above limits
apply to each individual carrier when transmitted alone.
NOTE 1: The on-axis spurious radiations, outside the transmit frequency band(s), are indirectly limited by
subclause 4.2.2.2. Consequently no specification is needed.
NOTE 2: Intermodulation limits inside the transmit frequency band(s) are to be determined by system design and
are subject to satellite operator specifications.
4.2.3.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 6.4.
4.2.4 Mechanical (antenna pointing)
4.2.4.1 Justification
Protection of signals to and from both the same and adjacent satellites.
4.2.4.2 Specification
a) Pointing stability:
The SNG TES shall not show any sign of distortion and the pointing shall not need adjustment whilst being used
in a wind speed which is less than that specified by the applicant at which the antenna shall be stowed.
b) Pointing accuracy capability:
The antenna mount shall allow the position of the antenna transmit main beam axis to be maintained with an
accuracy better than the off-axis angle measured when the main beam gain has decreased by 1 dB at any
frequency in the equipment operating band, over the full range of azimuth and elevation movement available to
the antenna.
c) Polarization angle alignment capability:
The polarization angle shall be continuously adjustable in a range of at least 180°; it shall be possible to fix the
transmit antenna polarization angle with an accuracy better than 1°.
d) Polarization alignment stability:
The SNG TES shall not show any sign of distortion and the polarization shall not need realignment whilst being
used in a wind speed which is under that specified by the applicant at which the antenna shall be stowed nor from
any accidental mechanical action.
4.2.4.3 Conformance tests
Conformance tests shall be carried out in accordance with subclause 6.5.
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14 ETSI EN 301 430 V1.1.1 (2000-05)
5 Testing for compliance with technical requirements
5.1 Environmental conditions for testing
Tests defined in the present document shall be carried out at representative points within the boundary limits of the
declared operational environmental profile.
5.2 Essential radio test suites
The essential radio test suites for a SNG is given in subclause 6.
6 Test methods
6.1 General
The values of measurement uncertainty associated with each measurement parameter apply to all of the test cases
described in the present document. The measurement uncertainties shall not exceed the values shown in tables 4 and 5.
Table 4: Measurement uncertainty
Measurement parameter Uncertainty
Radio frequency ±10 kHz
RF power ±0,75 dB
Conducted spurious ±4 dB
Radiated spurious ±6 dB
Antenna gain ±0,5 dB
Table 5: Measurement uncertainties for antenna gain pattern
Gain relative to the antenna Uncertainty
on-axis gain
>-3dB ±0,3dB
-3 dB to -20 dB ±1,0 dB
-20 dB to -30 dB ±2,0 dB
-30 dB to -40 dB ±3,0 dB
For vehicle mounted equipment the EUT, as defined for each test, does not include the transportation subsystem unless
agreed between the applicant and test house.
The EUT does not include the control and monitoring and power subsystems unless agreed between the applicant and
test house.
The antenna shall never be rotated around its main beam axis.
All tests with carrier-on shall be conducted with maximum transmit power as declared by the applicant.
The modulation shall be by an energy dispersal signal only, as specified by the applicant, in the case of an analogue
modulation scheme or by a pseudo random bit sequence in the case of a digital modulation scheme.
All technical characteristics and operational conditions declared by the applicant shall be entered in the test report.
ETSI
15 ETSI EN 301 430 V1.1.1 (2000-05)
6.2 Off-axis EIRP density within the band
Off-axis EIRP emission density (co-polar and crosspolar) within the transmit frequency band(s).
6.2.1 Test method
6.2.1.1 General
Conformance shall be determined from:
a) measurement of maximum RF power density entering the antenna feed for the different modulation schemes
declared by the applicant;
b) measurement of transmit antenna gain pattern.
To ascertain the off-axis EIRP it is necessary to know the transmit power density and antenna transmit radiation pattern.
To ascertain the radiation pattern it is necessary to know the antenna transmit gain.
The following three measurement procedures shall, therefore, be performed:
a) transmitter output power density (dBW/40 kHz);
b) antenna transmit gain (dBi);
c) antenna transmit radiation patterns (dBi).
6.2.1.2 Transmit output power density
6.2.1.2.1 General
For the purpose of the present document, transmitter output power is defined as the maximum power delivered
continuously by the transmitting equipment to the antenna flange.
For the purpose of this test the EUT is defined as the SNG TES excluding the antenna from the antenna flange.
6.2.1.2.2 Test site
There are no requirements for the test site to be used for this test.
6.2.1.2.3 Method of measurement
Spectrum
analyser
Test
EUT
load
Figure 2: Test arrangement - transmit output power density measurement
a) The test arrangement shall be as shown in figure 2.
b) With the carrier being modulated the maximum power supplied to the antenna flange shall be measured
in dBW/40 kHz. The coupling factor of the test coupler at the test frequency and the attenuation of any necessary
waveguide adapter and any other test equipment (e.g. cable) shall be taken into account. The resolution
bandwidth of the spectrum analyser shall be set as close as possible to the specified measuring bandwidth. If the
resolution bandwidth is different from the specified bandwidth then bandwidth correction shall be performed.
ETSI
16 ETSI EN 301 430 V1.1.1 (2000-05)
c) The measurement shall be performed for each modulation scheme as applicable and for each transmit frequency
band at a frequency in the centre of the band, and at a transmit frequency as close to the upper limit of the
transmit frequency band as possible regarding the bandwidth of the signal and at a transmit frequency as close to
the lower limit of the transmit frequency band as possible regarding the bandwidth of the signal.
6.2.1.3 Antenna transmit gain
6.2.1.3.1 General
For the purpose of the present document, the antenna transmit gain is defined as the ratio, expressed in decibels (dB), of
the power that would have to be supplied to the reference antenna, i.e. an isotropic radiator isolated in space, to the
power supplied to the antenna being considered, so that they produce the same field strength at the same distance in the
same direction. Unless otherwise specified the gain is for the direction of maximum radiation.
For the purpose of this test the EUT is defined as that part of the SNG TES which comprises the antenna and its flange.
The antenna includes the reflector(s), feed, support struts and an enclosure of equal weight/distribution to any electrical
equipment normally housed with the feed at the antenna focal point.
6.2.1.3.2 Test site
This test shall be performed on either an outdoor far-field test site or compact test range. However, if the near-field
scanner technology to convert near-field measurements to far-field results is proven and sufficiently accurate by
reference to tests taken in both regions then antenna measurements may be taken in the near field.
Fully automated systems can be used for these tests providing that the results can be proven to be as accurate as if they
were done according to the specified method.
6.2.1.3.3 Method of measurement
Substitution
Antenna
Test X-Y
receiver Plotter
Signal Test
generator transmitter
Test antenna EUT
Figure 3: Test arrangement - antenna transmit gain measurement
The following test procedure shall be performed for each transmit frequency band.
a) The test arrangement shall be as shown in figure 3 with the EUT connected to the test receiver. A signal
proportional to the angular position from the servo mechanism shall be applied to the X-axis and the signal level
from the test receiver shall be applied to the Y-axis of the plotter.
b) A test signal at a frequency in the centre of the transmit frequency band shall be transmitted by the test
transmitter through the test antenna. The E-plane shall be vertical. The EUT antenna main beam axis shall be
aligned with the main beam axis of the test transmitter. The polarizer of the EUT antenna shall be rotated and
adjusted such that the E-plane coincides with the E-plane of the test transmitter.
c) The EUT shall be aligned to maximize the received signal and the X-Y plotter adjusted to give the maximum
reading on the chart.
ETSI
17 ETSI EN 301 430 V1.1.1 (2000-05)
d) The EUT shall be driven in azimuth in one direction through 10°.
e) The pattern measurement is then obtained by driving the EUT in azimuth back through boresight to 10° the other
side with the plotter recording the results.
f) The EUT shall be replaced by the substitution antenna and the received signal level maximized.
g) This level shall be recorded on the X-Y plotter.
h) The substitution antenna shall be driven in azimuth as in d) and e).
i) The gain of the EUT shall be calculated from:
G =L -L +C
EUT 1 2
where:
G is the gain of the
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