IEC 62273-1:2007

INTERNATIONAL IEC
STANDARD 62273-1
First edition
2007-02
Methods of measurement for radio transmitters –
Part 1:
Performance characteristics of terrestrial
digital television transmitters

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INTERNATIONAL IEC
STANDARD 62273-1
First edition
2007-02
Methods of measurement for radio transmitters –
Part 1:
Performance characteristics of terrestrial
digital television transmitters

© IEC 2007 ⎯ Copyright - all rights reserved
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– 2 – 62273-1 © IEC:2007(E)
CONTENTS
FOREWORD.4

1 Scope.6
2 Normative references .6
3 Terms, definitions and abbreviations .7
4 General conditions of measurement .9
4.1 Temperature and humidity.9
4.2 Conditions for primary power supply.9
4.3 Output power.9
4.4 Test load .9
4.5 Auxiliary equipment .9
4.6 Test equipment and test signals .10
5 General characteristics.10
5.1 Frequency .10
5.2 Output power.11
5.3 Spurious domain emission.14
5.4 Out-of-band domain emission.14
5.5 Occupied bandwidth .15
5.6 Power consumption .16
6 Transmitted signal characteristics.16
6.1 Intermodulation (shoulders).16
6.2 Modulation error ration (MER) .17
6.3 Bit error ratio (BER) .17
6.4 Equivalent noise degradation .18
6.5 Phase noise .19
7 Protection against atmospheric discharge.20
8 Acoustic noise .20
9 Safety.20

Annex A (normative) Eye-height characteristics .21
Annex B (normative) Characteristic frequency .22
Annex C (normative) Frequency drift.25
Annex D (normative) Attenuation of the measuring coupler .26
Annex E (normative) Spurious emissions/out-of-band emissions.28
Annex F (normative) DVB-T shoulder attenuation measurement .32
Annex G (normative) Modulation error ratio (MER) measurement.36
Annex H (normative) Bit error rate (BER) measurement .38

Bibliography.39

62273-1 © IEC:2007(E) – 3 –
Figure 1 – Measuring set-up for output power .12
Figure 2 – Measuring set-up for spurious emission, out-of-band emission and
bandwidth .15
Figure A.1 – Transmitter eye diagram for jitter .21
Figure B.1 – Measurement.23
Figure B.2 – Frequency spectrum analysis.24
Figure D.1 – Measurement.26
Figure D.2 – Relative coupling .27
Figure D.3 – Coupling attenuation.27
Figure E.1 – Attenuation curve.29
Figure E.2 – Out-of-band and spurious emissions .30
Figure E.3 – Output filter.30
Figure E.4 – High-frequency spectrum .31
Figure E.5 – Superimpose curve .31
Figure F.1 – Measurement .32
Figure F.2 – Shoulder attenuation.33
Figure F.3 – Analyser setting .33
Figure F.4 – Measurement system of intermodulation .34
Figure F.5 – Measurement of intermodulation at the upper side of the channel .35
Figure G.1 – Measurement .36
Figure H.1 – Measurement.38

Table 1 – Measurement parameters for out-of-band emission .15
Table 2 – Measurement parameters for occupied bandwidth .16
Table 3 – Equivalent noise bandwidth .18
Table A.1 – Electrical characteristic specifications for ASI link .21

– 4 – 62273-1 © IEC:2007(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
METHODS OF MEASUREMENT FOR RADIO TRANSMITTERS –

Part 1: Performance characteristics of terrestrial
digital television transmitters

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International Standard IEC 62273-1 has been prepared by IEC technical committee 103:
Transmitting equipment for radio communication
The text of this standard is based on the following documents:
FDIS Report on voting
103/63/FDIS 103/65/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The list of all the publications of the IEC 62273 series, under the general title Methods of
measurement for radio transmitters, can be found on the IEC website.

62273-1 © IEC:2007(E) – 5 –
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