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Input Signals (Recommended Timing)
For IBM and Compatibles
Input signals: The video output signal timing of different
types of video signals are shown below for
reference.
VIDEO SIGNAL
HORIZONTAL
SYNC SIGNAL
a
b
VIDEO SIGNAL
VERTICAL
SYNC SIGNAL
w
x
MODE
350 line 400 line
LEVEL
VIDEO
TYPE
a
FRONT PORCH
dot
SYNC
b
dot
c
dot
BACK PORCH
VIDEO PERIOD
d
dot
dot
H
1H (a+b+c+d)
S
s
Y
N
ns
1 dot
C
kHz
1/H
MHz
1/dot
TTL
LEVEL
+/–
SYNC POLARITY
H
FRONT PORCH
w
H
x
SYNC
H
BACK PORCH
y
H
z
VIDEO PERIOD
V
S
H
Y
1V (w+x+y+z)
N
14.2681
ms
C
Hz
70.0866
1/v
TTL
LEVEL
+/–
SYNC POLARITY
Notes:
• When connecting a notebook computer to the data-projector for display on an (800 x 600) LCD screen, the screen may
not show a full picture image. See page E-17 "Computer Mode Memory Adjustments" for details.
• This projector may not be able to display images from notebook computers in simultaneous (CRT/LCD) mode. If this
occurs, turn off the LCD display on the notebook computer and output the display data in "CRT only" mode. Details on
how to change display modes can be found in your notebook computer's operation manual.
c
d
z
y
IBM
VGA
TEXT
Graphic
720 dot
640 dot
350 line 400 line 480 line
0.7Vp-p
75 load
R•G•B
17
14
108
96
55
50
720
640
900
800
31.7774
31.7776
35.3082
39.7219
31.4689
31.4688
28.322
25.175
TTL
TTL
+
–
+
–
–
38
13
38
13
11
2
2
2
2
2
59
34
59
34
32
350
400
480
350
400
449
449
449
449
525
14.2681
14.2681
14.2681
16.6832
70.0866
70.0863
70.0863
59.9405
TTL
TTL
TTL
TTL
+
–
–
–
+
For Apple Macintosh Series
VIDEO SIGNAL
C-SYNC(H)
VIDEO SIGNAL
C-SYNC(V)
V-SYNC
IBM
IBM
IBM
VESA
SVGA
SVGA
VESA
Graphic
Graphic
Guideline
Standard
640 dot
800 dot
800 dot
800 dot
480 line
600 line
600 line
600 line
0.7Vp-p
0.7Vp-p
0.7Vp-p
0.7Vp-p
75 load
75 load
75 load
75 load
R•G•B
R•G•B
R•G•B
24
24
40
40
72
128
128
128
88
640
800
800
832
1,024
1,056
26.413
28.444
26.400
20.800
31.746
27.777
25.000
20.000
37.860
35.156
37.879
48.077
31.500
36.000
40.000
50.000
TTL
TTL
TTL
–
+/–
+
9
1
1
3
2
4
28
22
23
480
600
600
520
625
628
13.735
17.778
16.579
13.853
72.809
56.250
60.317
72.188
TTL
TTL
TTL
–
+/–
+
e
e = 2 dot
d
a
b c
w
x
z
y
IBM
IBM
Apple
Macintosh
Macintosh
SVGA
SVGA
si
VESA
VESA
13" Monitor
13" Monitor
Standard
800 dot
640 dot
640 dot
600 line
480 line
480 line
0.7Vp-p
1Vp-p max.
0.7Vp-p max.
75 load
75 load
75 load
R•G•B
R•G•B
R•G•B
R•G•B
C.SYNC
C.SYNC
56
16
64
120
80
64
64
160
96
800
800
640
1,040
1,056
864
21.333
28.5714
28.595
20.202
33.0688
31.914063
46.875
35.0000
34.971149
49.500
30.2400
31.334149
TTL
TTL
TTL
+
+
–
37
1
3
6
3
3
23
21
39
600
600
480
666
625
525
13.333
15.00
75.000
66.67
TTL
TTL
TTL
+
+
–
Apple
Apple
Macintosh
LC
16" Monitor
832 dot
624 line
0.7Vp-p max.
75 load
R•G•B
C.SYNC
78
31
62
65
116
224
640
832
896
1,152
20.124
17.468
49.693
57.246
TTL
TTL
–
–
3
1
3
3
39
39
480
624
525
667
15.00
13.423
66.67
74.502
TTL
TTL
–
–
E-12
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