Appendix C.- Measurement Of The Video / Audio Ratio; Analogue Channels - Promax 8 plus Manual Del Usuario Y Operador

INSTRUCTION MANUEL. PROMAX-8+
APPENDIX C.- MEASUREMENT OF THE VIDEO / AUDIO RATIO

-ANALOGUE CHANNELS-

It permits to measure the ratio between the video carrier and the audio carrier
amplitudes.
Although this process depends on the standard used, it is usual to consider
that a properly transmitted PAL channel should have a sound subcarrier 13 dB below
the video carrier.
Figure 43.- Video / Audio ratio measurement.
These specifications ensure that there is no interference in the same or the
adjacent channel.
May 2001
= −
V / A V A ( dB )
L L
Page 43