NEC XM37, XP37 Typical Input Signal Timing, Resolution, Resolution, VGA Compatible, Mac ￿U, Quadra, XGA-2Compatible, or LC Compatible, Horizontal Frequency

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Typical Input Signal Timing

		VGA Compatible			XGA-2 Compatible			Mac ￿U, Quadra,
								or LC Compatible
Resolution	640￿~350		720￿~400	640￿~480	720￿~350	720￿~400	640￿~480	640￿~480
Horizontal Frequency	31.469KHz		31.469KHz	31.469KHz	39.444KHz	39.444KHz	39.375KHz	35.000KHz
(A) Horizontal Period	31.778μsec		31.778μsec	31.778μsec	25.352μsec	25.352μsec	25.397μsec	28.570μsec
(B) Horizontal Pulse Width	3.813μsec		3.813μsec	3.813μsec	3.042μsec	3.042μsec	3.048μsec	2.120μsec
(C) Horizontal Back Porch	1.589μsec		1.589μsec	1.589μsec	1.522μsec	1.522μsec	1.524μsec	3.170μsec
(D) Horizontal Active Area	26.058μsec		26.058μsec	26.058μsec	20.282μsec	20.282μsec	20.317μsec	22.810μsec
(E) Hrizontal Front Porch	0.318μsec		0.318μsec	0.318μsec	0.508μsec	0.508μsec	0.508μsec	0.180μsec

	VESA	VESA	VESA	VESA	MAC ￿U	8514/A & XGA	VESA
	640￿~480	800￿~600	800￿~600	800￿~600	&	Interlaced	1024￿~768
	at 72Hz	at 56Hz	at 60Hz	at 72Hz	Quadra	Compartible	at 60Hz
Resolution	640￿~480	800￿~600	800￿~600	800￿~600	832￿~624	1024￿~768	1024￿~768
Horizontal Frequency	37.860KHz	35.156KHz	37.879KHz	48.077KHz	49.725KHz	35.587KHz	48.363KHz
(A) Horizontal Period	26.413μsec	28.444μsec	26.400μsec	20.800μsec	20.111μsec	28.100μsec	20.677μsec
(B) Horizontal Pulse Width	1.270μsec	2.000μsec	3.200μsec	2.400μsec	1.117μsec	3.910μsec	2.092μsec
(C) Horizontal Back Porch	4.063μsec	3.556μsec	2.200μsec	1.280μsec	3.910μsec	1.247μsec	2.462μsec
(D) Horizontal Active Area	20.317μsec	22.222μsec	20.000μsec	16.000μsec	14.524μsec	22.760μsec	15.754μsec
(E) Horizontal Front Porch	0.762μsec	0.667μsec	1.000μsec	1.120μsec	0.559μsec	0.178μsec	0.369μsec

*VGA, XGA, XGA-2, and 8514/A are the trademarks of International Business Machines Corporation. *Macintosh II, Quadra, and LC are the trademarks of Apple Computer Inc.

*VESA is the trademark of a non-profit organization, Video Electronics Standards Association.

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