[14]
Measurement of the carrier/noise ratio on analogical ("a") and digital ("d")
channels. Press this key to measure the carrier-to-noise ratio of the signal,
once the video carrier level is stabilized.
[15]
Measurement of the video-to-audio ratio (only on analogue channels). Press
this key to measure the video-to-audio ratio of the signal, once the video
carrier level is stabilized.
[16]
Tuning mode: frequency or channel. Press this key to select among tuning
by frequency or channel.
