RECOMMENDED METHODS OF MEASUREMENT ON RECEIVERS FOR TELEVISION BROADCAST TRANSMISSIONS - PART 3: ELECTRICAL MEASUREMENTS ON MULTICHANNEL SOUND TELEVISION RECEIVERS USING SUBCARRIER SYSTEMS
International Electrotechnical Committee
FOREWORD
CHAPTER I: GENERAL
SECTION ONE - INTRODUCTION
1 Scope
2 Object
SECTION TWO - GENERAL EXPLANATION OF TERMS
3 Definitions
SECTION THREE - GENERAL NOTES ON MEASUREMENTS
4 General conditions
5 Reference frequency and reference modulation factor
6 Standard output power and voltage
6.1 Standard output power for loudspeaker
6.2 Standard line output voltage
7 Setting of tone controls
8 Setting of stereo balance control
9 Setting of compressor
10 Receiver tuning
11 Radio-frequency signals
12 Weighted and unweighted audio noise and interface
measurements
13 Coloured noise
14 Standard measuring conditions
SECTION FOUR - SUPPRESSION OF LINE-SCAN FREQUENCY
INTERFERENCE AT THE AUDIO OUTPUTS
15 Introduction
16 Definition
17 Method of measurement
18 Presentation of results
CHAPTER II: ELECTRICAL RESPONSE MEASUREMENTS
SECTION FIVE - AUDIO-FREQUENCY RESPONSE CHARACTERISTICS
19 Definition
20 Method of measurement
21 Presentation of results
SECTION SIX - AUDIO-FREQUENCY RESPONSE CHARACTERISTICS OF
TONE CONTROLS
22 Definition
23 Method of measurement
24 Presentation of results
CHAPTER III: AUDIO-FREQUENCY NON-LINEAR DISTORTION
SECTION SEVEN - DISTORTION IN THE PRESENCE OF A SINGLE
SIGNAL, HARMONIC DISTORTION
25 Definition
26 Method of measurement
26.1 Measurement of distortion as a function of
output power
26.2 Measurement of distortion as a function of
modulation factor
27 Presentation of results
SECTION EIGHT - INTERMODULATION
28 General
CHAPTER IV: AUDIO CHANNEL SEPARATION
SECTION NINE - CROSSTALK
29 Definition
30 Method of measurement
30.1 Sine wave method
30.2 Coloured noise method
31 Presentation of results
SECTION TEN - STEREOPHONIC SEPARATION
32 Definition
33 Method of measurement
34 Presentation of results
CHAPTER V: INTERNALLY GENERATED INTERFERENCE
SECTION ELEVEN - NOISE FLOOR AND SIGNAL-TO-BUZZ RATIO
35 Definition
36 Method of measurement
36.1 Noise floor
36.2 Signal-to-buzz ratio
37 Presentation of results
SECTION TWELVE - SIGNAL-TO-BUZZ-BEAT RATIO IN THE AUDIO
CHANNEL TRANSMITTED BY AN FM SUBCARRIER
38 Definition
39 Method of measurement
40 Presentation of results
CHAPTER IV: SENSITIVITY
SECTION THIRTEEN - SIGNAL-TO-NOISE RATIO
41 Definition
42 Method of measurement
43 Presentation of results
SECTION FOURTEEN - NOISE-LIMITED SENSITIVITY
44 Definition
45 Method of measurement
46 Presentation of results
SECTION FIFTEEN - MODE IDENTIFICATION SENSITIVITY
47 Definition
48 Method of measurement
49 Presentation of results
Table 1 - Sensitivity of mode identification (dB(mV))
Figure 1 - 22,4 Hz to 15 kHz bandpass filter with trap for
line-scan frequency
Figure 2 - Arrangement for signal-to-noise ratio, crosstalk
and separation measurements
Figure 3 - Arrangement for measuring stereophonic separation
Figure 4 - Example of stereophonic separation (FM-FM system)
Figure 5 - Arrangement for measuring noise floor and signal-
to-buzz ratio
Appendix A - Modulation parameters from the FM-FM and BTSC
systems
Appendix B - Requirements for BTSC stereo generator control
and test capability
Applies to broadcast television receivers designed for the reception of multichannel sound using subcarriers. Is applicable to both the FM-FM and BTSC systems described in CCIR Report 795.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 12 |
