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4.2
Signal Functions
4.2.1
Video Parameters
As seen by the source, the display R, G and B input resistance is be 75-ohm, ±10%; input capacitance at
50 MHZ < 30 pF.
The video input signal will have a range of 0 mv to 714 mv (maximum) where 0 mv is minimum
luminance. Rise and fall times for the input signal (10% - 90%) must be < 8 ns (Figure 7).
When terminated with an ideal 75 ohm termination, the dark state (black input) is defined as a level
between 0 mv and 10 mv. The white state (full white) is dependent on the VGA controller source driving
the Display. Maximum output levels may range from 550 mv to 714 mv. Nominal 680 mv input voltage
shall be defined as the default for setup requirements.
Displayed image intensity and color change follows visual linearity with the video analog input. This is
necessary to provide a uniform user color change on the screen in response to a uniformly stepped
analog input. The Display is capable of resolving a minimum color range of 262,144 displayable colors (6
bit resolution for Red, Green and Blue). This interpolates to 64 shades of gray (or color) at the Red,
Green, and Blue analog video inputs. Accomplishing specified shades of gray requires a "Video Gain"
control adjustment (Section 2.9) of Red, Green, and Blue analog input signals based on the maximum
output level range previously specified.
Figure 7. Rise / Fall Time
Title: Product Specification – LC08 High-Bright Monitor
Document Number: 023-0283-00
Page 11 of 26
Rev C
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