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Video Input Signals
This section describes the following aspects of the supported input
signals:
• Video signal types,
• Video formats,
• Video input channels,
• Color controls,
• Pixel clock, and
• Triggers.
Video Signal Types
The DT3120 can acquire images from the following signal types:
• Monochrome − Data is represented as 8-bit grayscale values.
• Composite (CVBS) − The Color Video Broadcast Standard,
where both luminance and chrominance information is encoded
on a single composite video signal. The signal passes through
high- and low-pass filters on the board to separate the
chrominance and luminance signals. The decoded signals are
represented as 8-bit data.
• S-Video − This signal contains both luminance and chrominance
information. The filters on the board are bypassed. S-video
signals are generally "cleaner," since the high- and low-pass
filters can sacrifice signal integrity.
Principles of Operation
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