Data Translation 18729, User Manual

Page: 31 / 128

Chapter 2
14
Vertical Video Signal
Each field of video also contains blanking information and lines of
active video.
Figure 3 shows the components of a single vertical field
of noninterlaced video.
Note that the frame is an area that you establish within the active
video area. For information about the frame, refer to
page 15 .
Figure 3: Vertical Video Signal
Line measurements are relative to the vertical reference point , which
is defined as the beginning of the vertical sync. Lines themselves are
measured in terms of pixels.
The vertical video signal settings are fixed.
Blanking
0 1 2 3
n-1
Vertical Reference
Point
First Active Line
Frame Top
Frame Height
Active Video
Vertical Sync
Active Line Count
Total Lines Per Field