Hitachi CP-X255 user manual Initial set signals

Example of computer signal

Initial set signals

The following signals are used for the initial settings. The signal timing of some computer models may be different. In such case, adjust the items V POSITION and H POSITION in the IMAGE menu.

Back porch (B)			Front porch (D)	Back porch (b)			Front porch (d)
Data		Display interval (C)		Data		Display interval (c)
H. Sync.				V. Sync.
	Sync (A)
					Sync (a)

Computer/	Horizontal signal timing (μs)
Signal	(A)	(B)	(C)	(D)
TEXT	2.0	3.0	20.3	1.0
VGA (60Hz)	3.8	1.9	25.4	0.6
VGA (72Hz)	1.3	4.1	20.3	0.8
VGA (75Hz)	2.0	3.8	20.3	0.5
VGA (85Hz)	1.6	2.2	17.8	1.6
SVGA (56Hz)	2.0	3.6	22.2	0.7
SVGA (60Hz)	3.2	2.2	20.0	1.0
SVGA (72Hz)	2.4	1.3	16.0	1.1
SVGA (75Hz)	1.6	3.2	16.2	0.3
SVGA (85Hz)	1.1	2.7	14.2	0.6
Mac 16" mode	1.1	3.9	14.5	0.6
XGA (60Hz)	2.1	2.5	15.8	0.4
XGA (70Hz)	1.8	1.9	13.7	0.3
XGA (75Hz)	1.2	2.2	13.0	0.2
XGA (85Hz)	1.0	2.2	10.8	0.5
1152 x 864	1.2	2.4	10.7	0.6
(75Hz)
1280 x 960	1.0	2.9	11.9	0.9
(60Hz)
1280 x 1024	1.0	2.3	11.9	0.4
(60Hz)
1280 x 1024	1.1	1.8	9.5	0.1
(75Hz)
1280 x 1024	1.0	1.4	8.1	0.4
(85Hz)
1600 x 1200	1.2	1.9	9.9	0.4
(60Hz)

Computer/	Vertical signal timing (lines)
Signal	(a)	(b)	(c)	(d)
TEXT	3	42	400	1
VGA (60Hz)	2	33	480	10
VGA (72Hz)	3	28	480	9
VGA (75Hz)	3	16	480	1
VGA (85Hz)	3	25	480	1
SVGA (56Hz)	2	22	600	1
SVGA (60Hz)	4	23	600	1
SVGA (72Hz)	6	23	600	37
SVGA (75Hz)	3	21	600	1
SVGA (85Hz)	3	27	600	1
Mac 16" mode	3	39	624	1
XGA (60Hz)	6	29	768	3
XGA (70Hz)	6	29	768	3
XGA (75Hz)	3	28	768	1
XGA (85Hz)	3	36	768	1
1152 x 864	3	32	864	1
(75Hz)
1280 x 960	3	36	960	1
(60Hz)
1280 x 1024	3	38	1024	1
(60Hz)
1280 x 1024	3	38	1024	1
(75Hz)
1280 x 1024	3	44	1024	1
(85Hz)
1600 x 1200	3	46	1200	1
(60Hz)

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