Grass Valley Trinix v.2.4.1 - Manual (Page 202)

Analog Input Processing
202 Planning and Installation Manual
3.) Setup Vertical Blanking
The Notch Decode Mode and the Chroma Kill selections apply to all
lines in the VBI.
Each line pair in the VBI can be set to pass or blank the incoming
signal. In NTSC systems, each of these line pairs can also be set to
add Setup if desired.
The number of line pairs that can carry data can be extended if
desired. For example:
• In NTSC line pairs 10/273 through line pairs 20/283 are nor-
mally available for data. By using this menu, up to four addi-
tional line pairs can be reserved for data use.
• In PAL systems, up to five additional line pairs can be reserved.
Vertical blanking selections are summarized in
Table 35 .
The actual menus are shown on page 203 .
Table 35. Vertical blanking selections.
Processing
Function
Type
Default
Range/Choices
Resolution
Notch Decode Mode 1 With Notch Decode set to “1” and Chroma Kill set to “0,” chroma is
passed.
With Notch Decode set to “2” and Chroma Kill set to “1,” chroma is
blanked and luminance is passed.
Chroma Kill 0
Blank Setup 0
0 = Pass this line pair as is
1 = Blank this line pair
2 = (NTSC only) Add Setup to this line pair
3 = (NTSC) Add Setup and blank this line pair
Reserve Line for Data Mode 0
NTSC-Reserve additional lines for data:
0 = No additional lines reserved
1 = Reserve lines 21 and 284
2 = Reserve lines 22 and 285
3 = Reserve lines 23 and 286
4 = Reserve lines 24 and 287
PALx-Reserve additional lines for data:
0 = No additional lines reserved
1 = Reserve lines 24 and 337
2 = Reserve lines 25 and 338
3 = Reserve lines 26 and 339
4 = Reserve lines 27 and 340
5 = Reserve lines 28 and 341