EN 60244-10:1993

Methods of measurement for radio transmitters - Part 10: Methods of measurement for television transmitters and transposers employing insertion test signals

Applies to television transmitters and transposers operating in accordance with television systems for monochrome and colour transmission employing 625 or 525 lines as described in CCIR publications. Deals with the application of insertion test signal measurement to television transmitters and transposers. This method of measurement is useful for checking the line time performance of the transmitters or transposers during programme service and provides a convenient method of testing transmission performance stability during acceptance tests. May also be used as an alternative means of carrying out some of the line time measurements described in EN 60244-5 and 60244-9.

Meßverfahren für Funksender - Teil 10: Meßverfahren für Fernsehsender und -umsetzer mit Prüfzeilensignalen

Méthodes de mesure applicables aux émetteurs radioélectriques - Partie 10: Méthodes de mesure applicables aux émetteurs et réémetteurs de télévision, et utilisant les signaux d'insertion

S'applique aux émetteurs et réémetteurs de télévision qui fonctionnent conformément aux normes utilisées par la télévision en noir et blanc, et en couleur, à 525 ou 625 lignes, décrites dans les publications du CCIR. Traite de l'application, aux émetteurs et réémetteurs de télévision, de la méthode utilisant les signaux d'insertion. Cette méthode est utile pour le contrôle de la qualité de l'émission d'un émetteur ou d'un réémetteur pendant la transmission d'un programme et constitue une méthode pratique d'essai de la qualité de transmission pendant les essais de recette. Peut également remplacer certaines méthodes pour mesurer certaines caractéristiques de durée de ligne, décrites dans les EN 60244-5 et 60244-9.

Methods of measurement for radio transmitters - Part 10: Methods of measurement for television transmitters and transposers employing (IEC 60244-10:1986)

General Information

• Status: Withdrawn
• Publication Date: 08-Apr-1993
• Technical Committee: CLC/SR 103 - Transmitting equipment for radiocommunication
• Drafting Committee: IEC/TC 103 - IEC_TC_103
• Parallel Committee: IEC/TC 103 - IEC_TC_103
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 03-Feb-2021
• Ref Project: SIST EN 60244-10:1999 - Methods of measurement for radio transmitters -- Part 10: Methods of measurement for television transmitters and transposers employing insertion test signals

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-1999
Methods of measurement for radio transmitters - Part 10: Methods of
measurement for television transmitters and transposers employing (IEC 60244-
10:1986)
Methods of measurement for radio transmitters -- Part 10: Methods of measurement for
television transmitters and transposers employing insertion test signals
Meßverfahren für Funksender -- Teil 10: Meßverfahren für Fernsehsender und -umsetzer
mit Prüfzeilensignalen
Méthodes de mesure applicables aux émetteurs radioélectriques -- Partie 10: Méthodes
de mesure applicables aux émetteurs et réémetteurs de télévision, et utilisant les
signaux d'insertion
Ta slovenski standard je istoveten z: EN 60244-10:1993
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME CEI
INTERNATIONALE IEC
60244-10
INTERNATIONAL
Première édition
STAN DARD
First edition
1986-01
Méthodes de mesure applicables aux
émetteurs radioélectriques
Dixième partie:
Méthodes de mesure applicables aux émetteurs et
réémetteurs de télévision, et utilisant les signaux
d'insertion
Methods of measurement for radio transmitters
Part 10:
Methods of measurement for television
transmitters and transposers employing
insertion test signals
© IEC 1986 Droits réservés
de reproduction — Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
X
PRICE CODE
International Electrotechnical Commission
IEC
McH Pour prix, voir catalogue en vigueur
• For price, see current catalogue

244-10 © I E C 1986 — 3 —
CONTENTS
Page
FOREWORD
PREFACE 5
INTRODUCTION
Clause
1. Scope 7
Object 7
2.
SECTION ONE — TEST SIGNALS AND LINE SELECTION
3. Introduction 7
4. Insertion test signals 9
5. Line selection
Content of the active picture period 11
6.
SECTION Two - GENERAL CONDITIONS OF MEASUREMENT AND INITIAL ADJUSTMENT OF THE EQUIPMENT
7. Manual and automatic methods of measurement 11
8. Measuring arrangement
9. Conditions of operation
10. Adjustment of the VSB demodulator
SECTION THREE — MEASUREMENT OF PERFORMANCE CHARACTERISTICS
11. Conformity with other standards 17
12. Luminance bar amplitude error 17
13. Synchronizing pulse amplitude error
14. Luminance bar tilt 19
15. Base-line distortion
16. 2T pulse/bar ratio error
17. 2T pulse shape distortion 23
18. Amplitude/video-frequency characteristic 23
19. Chrominance-luminance gain inequality
20. Chrominance-luminance delay inequality 25
21. Luminance non-linearity
22. Chrominance non-linearity
23. Differential gain
24. Differential phase
25. Chrominance-luminance cross-talk 31
26. Random noise at blanking level
27. In-band intermodulation 33
BIBLIOGRAPHY 36
FIGURES 37
APPENDIX A - CCIR Recommendation 473-3 45
APPENDIX B - Excerpt of CCIR Recommendation 567-1 73
APPENDIX C - List of references to Reports and Recommendations of the CCIR 81

244-10 © I E C 1986 — 5 —
INTERNATIONAL ELECTROTECHNICAL COMMISSION
METHODS OF MEASUREMENT
FOR RADIO TRANSMITTERS
Part 10: Methods of measurement for television transmitters and transposers
employing insertion test signals
FOREWORD
1) The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on which all the
National Committees having a special interest therein are represented, express, as nearly as possible, an international consensus
of opinion on the subjects dealt with.
2) They have the form of recommendations for international use and they are accepted by the National Committees in that sense.
3) In order to promote international unification, the IEC expresses the wish that all National Committees should adopt the text of
the IEC recommendation for their national rules in so far as national conditions will permit. Any divergence between the I E C
recommendation and the corresponding national rules should, as far as possible, be clearly indicated in the latter.
PREFACE
This standard has been prepared by Sub-Committee 12C: Transmitting Equipment, of I E C Technical
Committee No. 12: Radiocommunications.
The text of this standard is based upon the following documents:
Six Months' Rule Report on Voting
12C(CO)171 12C(CO)179
Further information can be found in the Report on Voting indicated in the table above.
The following IEC publications are quoted in this standard:

Publications Nos. 244: Methods of Measurement for Radio Transmitters.
244-5 (1971): Part 5: Measurements Particular to Transmitters and Transposers for Monochrome and
Colour Television.
244-5B (1975): Second Supplement to Publication 244-5. Sections Five and Six.
Amendment No. 1 (1978).
244-5C (1977): Third Supplement to Publication 244-5. Section Seven - Unwanted Modulation, Including
Hum, Noise and Intermodulation.
244-9 (1982): Part 9: Transposers for Monochrome and Colour Television.

— 7 —
244-10 © I E C 1986
METHODS OF MEASUREMENT
FOR RADIO TRANSMITTERS
Part 10: Methods of measurement for television transmitters and transposers
employing insertion test signals
INTRODUCTION
This standard is one of a series of parts of I E C Publication 244: Methods of Measurement for Radio
Transmitters, describing recommended methods of measurement for assessing the performance of radio
transmitters.
In this standard reference is made to other parts of I E C Publication 244, especially Publication 244-5:
Part 5: Measurements Particular to Transmitters and Transposers for Monochrome and Colour Televi-
sion, and Publication 244-9: Part 9: Transposers for Monochrome and Colour Television.
For the titles of other parts of Publication 244, refer to the inside of the back cover of this publication.
1. Scope
This standard applies to television transmitters and transposers operating in accordance with
television systems for monochrome and colour transmission employing 625 or 525 lines as described
in CCIR publications. For details of the characteristics of the various systems, see the CCIR
Report [1] mentioned in Appendix C.
2. Object
This standard deals with the application of insertion test signal measurement to television trans-
mitters and transposers.
This method of measurement is useful for checking the line time performance of the transmitters
or transposers during programme service and provides a convenient method of testing transmis-
sion performance stability during acceptance tests. It may also be used as an alternative means of
carrying out some of the line time measurements as described in I E C Publication 244-5 or 244-9
(including supplements).
SECTION ONE - TEST SIGNALS AND LINE SELECTION
3. Introduction
Test signals inserted on selected lines in the field-blanking interval of the composite video sign al
are termed "insertion test signals" and may be inserted by an appropriate instrument, for example
an insertion test signal generator.

244-10 © I E C 1986 —9—
TABLE I
Characteristics of the video signals at the transmitter input and demodulator output for different
television standards
625-line systems 525-line systems
Un= 700mV Un= 714mV
Us =300mV 1) Us=286mV1)
B, G, H, K 1 D,K I L M,N
S (%) 10 12.5 or 15 20 100 10
%)2) 75 75 76 30 75
(
U0 (mV) 808 840 or 875 950 300 824
3)
(mV) 700 700 700 700 714
Lino
Uso (mV) 269 275
280 or 292 300 300
1) Characteristics of the video signal at the input of the (test) transmitter
Un= nominal value of the luminance bar amplitude,
U, = nominal value of the synchronizing pulse amplitude.
2) Characteristics of the vision signal at the output of the transmitter (or transposer)
S l = nominal peak white level in percentage of peak carrier*,
62 = nominal blanking level in percentage of peak carrier*.
* In accordance with the CCIR Report [1] mentioned in Appendix C; for System L, without taking into account the
chrominance sub-carrier.
3) Characteristics of the video signal at the output of the demodulator
U„o = nominal value of the luminance bar amplitude, i.e. the voltage between blanking level and nominal white reference
level,
U0 = the value to which the voltage between zero-carrier and blanking level is to be adjusted, so that U„o = U,,,
Uso = nominal value of the synchronizing pulse amplitude, i.e. the voltage between blanking level and nominal synchro-
nizing level.
4. Insertion test signals
A representative range of insertion test signals is shown in Figures 1 to 8. For ease of reference
they are indicated by roman numerals.
The test signals Ito IV for 625-line systems are given in Figures 1 to 4, pages 37 and 38.
Figures 5 and 6, page 39, show the test signals V and VI for 525-line systems.
The test signals I to VI are based on the CCIR Recommendation reproduced in Appendix A,
to which reference should be made for further details.
The test signals VII and VIII are included for the measurement of certain characteristics not
included in the CCIR Recommendation.
Test signal VII, shown in Figure 7, page 40, is used for measuring the in-band intermodulation
products caused by intermodulation between the vision and sound carriers and the sideband
component corresponding to the
chrominance subcarrier in 625-line equipment, particularly for
transmitters and transposers employing common amplification of the vision and sound channels.
A similar test signal may be used for testing 525-line equipment.

244-10 © I E C 1986 — 11 —
Test signal VIII, shown in Figure 8, page 41, comprising a signal at blanking level for the full line
interval, is used for measuring noise in 625-line equipment. A similar test signal may be used for
testing 525-line equipment.
5. Line selection
For out-of-programme service tests, the test signals may be, in principle, inserted in any line in
the field-blanking interval.
For tests during programme service, the lines selected for the test signals should be in accordance
with relevant CCIR Recommendations and Reports (see Appendix C, reference [4]).
Content of the active picture period
6.
It is assumed that all insertion test signals are simultaneously present on the selected lines of the
field-blanking interval.
Because the measurement result may depend on the picture content of the other lines, the average
signal level during in-programme measurements shall be stated in the presentation of results.
Out-of-programme measurements may be made for different values of average picture level with
the luminance level of the active picture lines successively adjusted to correspond to an "all-black
picture" and an "all-white picture", and, if required, also to a "mid-grey picture". This shall also
be stated in the presentation of results.
SECTION TWO - GENERAL CONDITIONS OF MEASUREMENT
AND INITIAL ADJUSTMENT OF THE EQUIPMENT
7. Manual and automatic methods of measurement
Measurements with insertion test signals can be made either "manually" by means of discrete
items of test equipment, such as an oscilloscope, noise meter, etc., or "automatically" by using an
insertion test signal analyzer. The analyzer continually scans sequentially the selected performance
characteristics and may provide a digital read-out and give an indication when the measured values
exceed a predetermined threshold (for example, see the CCIR Reports [5] and [6] mentioned in
Appendix C).
The advantages of the automatic method include:
- reduction of measuring time,
- greater measurement accuracy for most characteristics,
- the possibility of recording on paper or tape.
Except where a distinction is made in particular clauses between manual and automatic methods
of measurement, the measurement procedures given in this standard are valid for both methods.
However, although in the case of automatic measurements the procedure is carried out automati-
cally by the insertion test signal analyzer, the various steps are described as if they were performed
manually.
When an automatic method of measurement is used, the analyzer will indicate the mean value of
the characteristic measured and the presentation of results shall state the period over which the
results are averaged.
244-10 © I — 13 —
E C 1986
8. Measuring arrangement
The measuring arrangement shown in Figure 9, page 42, comprises the following items of equip-
ment:
- For out-of-programme tests, a video test signal generator capable of delivering a composite video
signal, including the colour burst, in accordance with the television standard concerned.
- An insertion test signal generator, capable of delivering the insertion test signals given in Clause 4
above.
- A vestigial-sideband (VSB) demodulator provided with "zero-carrier reference", preferably of
the type employing switchable synchronous/envelope detection.
Envelope detection should preferably be used for the measurement of differential phase. If
envelope detection is also used for the measurement of other characteristics, any errors due to
[7]
quadrature distortion should be taken into account (for example, see the CCIR Report men-
tioned in Appendix C).
- An insertion test signal analyzer for the automatic method of measurement, or an oscilloscope
with line selector for the manual method of measurement.
- In addition, for the measurement of transposers, a test transmitter capable of delivering mod-
ulated vision and sound signals in accordance with the t
...