Planar LC12 manual Horizonta Vertical, Border, Video Mode Definitions Color Display Detection

Figure 6. TTL Allowable Signal Levels

4.2.2.1 Mode Detection

The polarity of incoming horizontal/vertical frequencies and synchronization pulses define the video resolution being presented. Video modes are listed in Table 3.

Video Mode	Displayed	Scanning Frequency)		Sync Polarity
	Image
	Resolution
		Horizonta	Vertical	Horizonta	Vertical
		l (KHz)	(Hz)	l
IBM VGA	640 x 400	31.468	70	-	+
IBM VGA	640 x 480	31.468	60	-	-
IBM VGA	656 x 496	31.468	60	-
w/Border					-
IBM VGA	720 x 400	31.468	70	-	-
IBM VGA	738 x 414	31.468	70
w/Border
VESA	800 x 600	48.077	72	+	+
VESA	1024 x 768	56.48	70	-	-

Table 3. Video Mode Definitions

4.2.2.2Color Display Detection

The video signal source determines which type of display is connected to it based on the state of the Monitor Sense Lines. The Monitor will indicate to the source that it is a "color display" when Monitor Sense Line 1 (Pin 11) is

Title: Product Specification: LC12 High-Bright Monitor	Page 11 of 24
Document Number: 023-0284-01	Revision: A