Data Translation DT3120, User Manual

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Principles of Operation
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Horizontal Video Signal
Each line of video comprising the total video area contains blanking
information and active video.
Figure 2 shows the components of a
single horizontal line of 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 2: Horizontal Video Signal
A horizontal line of video is identified by the falling edge of the
horizontal sync, and a field is composed of a collection of horizontal
lines defined by the active line count. Pixel measurements are relative
to the horizontal reference point
, which is defined as the beginning of
the horizontal sync.
The horizontal video signal settings are fixed and cannot be
programmed.
Front
Porch
Horizontal
Sync
Clamp End
Frame Left
Frame Width
Active Video
Horizontal
Reference
Point
First Active Pixel
Clamp Start
Front
Porch
Back
Porch
Blanking
Active Pixel Count
Total Pixels per Line
Color
Burst