Planar LC1200R user manual Synchronization

defined as a level between 0-mv and 10-mv. The white state (full white) is dependent on the VGA controller driving the LC1200R. Maximum levels may range from 550-mv to 714-mv. Nominal 680-mv input voltage shall be defined as the default for supplier setup requirements.

Displayed image intensity and colors will change linearly 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 LC1200R 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 6.1) of red, green, and blue analog input signals based on the maximum output level range previously specified.

Figure 3

POS	OVERSHOOT	HIGH
		STEADY
		LEVEL
NEG		LOW
		STEADY
		LEVEL
RISE	FALL
TIME	TIME

4.2.2 Synchronization

Sync pulses for horizontal and vertical are TTL levels. Figure 4 TTL Allowable Signal Levels defines the levels and drive current capabilities.

LC1200R User’s Guide 021-0183-00 Rev A 12 of 29