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3.17.1.6.15
NTSC Pedestal
NTSC video uses a pedestal to offset the black level from the blanking level on
composite signal. This offset is 7.5 IRE from the blanking level of 0 IRE.
Figure 3.143 Decode > VBI-VANC > NTSC Pedestal
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3.17.1.6.16
Video Index
Video Index data is carried as chrominance data on lines 14 and 277 for the 525-line
(NTSC) system and on lines 11 and 324 for the 625-line (PAL) system. RP186
provides a method of coding the Video Index data structure in 525-line and 625-line
so that various picture and program related source data can be carried within the
video signal. The RX8000 can either extract the Video Index data from VBI PES or
derive it from the aspect ratio and frame rate of the incoming video.
Figure 3.144 Decode > VBI-VANC > Video Index
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EN/LZT 790 0005 R7A
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PES: Enables insertion of VITC data in to the video output signal where the
VITC data is sourced from the VBI PES.
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AUTO: Enables insertion of VITC data in to the video output signal where
the VTIC data is sourced from either PES or VIDEO in that order of
precedence.
VITC Output Status – Displays the presence of VITC in the VBI area of the SD
output video.
VBI Insertion lines 525 – Specifies the Line Number for VITC insertion in the
VBI area of 525 standard video.
VBI Insertion lines 625 – Specifies the Line Number for VITC insertion in the
VBI area of 625 standard video.
VANC VITC Output Status – Displays the presence of Vertical Interval
Timecode in the VANC space of the HD output video.
NTSC Pedestal Insertion – This menu enables or disables addition of the
pedestal level to all the VBI lines for NTSC based signals.
Video Index Stream Status – Displays the presence of Video Index information
in either the incoming VBI PES or generated using the video information.
Using the Equipment
3-293
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