Input Signals (Recommended Timing)
E-12
For IBM and Compatibles
For Apple Macintosh Series
Input signals: The video output signal timing of different
types of video signals are shown below for
reference.
a
b
c
d
w
x
y
z
VIDEO SIGNAL
HORIZONTAL
SYNC SIGNAL
VIDEO SIGNAL
VERTICAL
SYNC SIGNAL
e
a
b c
d
w
x
y
z
VIDEO SIGNAL
C-SYNC(H)
C-SYNC(V)
VIDEO SIGNAL
V-SYNC
e = 2 dot
Apple
Macintosh
LC
13" Monitor
640 dot
480 line
0.7Vp-p max.
75
Ω
load
R•G•B
C.SYNC
78
62
116
640
896
28.595
31.914063
34.971149
31.334149
TTL
–
3
3
39
480
525
15.00
66.67
TTL
–
Apple
Macintosh
16" Monitor
832 dot
624 line
0.7Vp-p max.
75
Ω
load
R•G•B
C.SYNC
31
65
224
832
1,152
20.124
17.468
49.693
57.246
TTL
–
1
3
39
624
667
13.423
74.502
TTL
–
IBM
SVGA
Graphic
800 dot
600 line
0.7Vp-p
75
Ω
load
R•G•B
24
72
128
800
1,024
28.444
27.777
35.156
36.000
TTL
+/–
1
2
22
600
625
17.778
56.250
TTL
+/–
Apple
Macintosh
ΙΙ
si
13" Monitor
640 dot
480 line
1Vp-p max.
75
Ω
load
R•G•B
C.SYNC
64
64
96
640
864
28.5714
33.0688
35.0000
30.2400
TTL
–
3
3
39
480
525
15.00
66.67
TTL
–
IBM
VESA
Graphic
640 dot
480 line
0.7Vp-p
75
Ω
load
R•G•B
24
40
128
640
832
26.413
31.746
37.860
31.500
TTL
–
9
3
28
480
520
13.735
72.809
TTL
–
IBM
SVGA
800 dot
600 line
0.7Vp-p
75
Ω
load
R•G•B
56
120
64
800
1,040
20.800
20.000
48.077
50.000
TTL
+
37
6
23
600
666
13.853
72.188
TTL
+
IBM
SVGA
800 dot
600 line
0.7Vp-p
75
Ω
load
R•G•B
40
128
88
800
1,056
26.400
25.000
37.879
40.000
TTL
+
1
4
23
600
628
16.579
60.317
TTL
+
IBM
SVGA
800 dot
600 line
0.7Vp-p
75
Ω
load
R•G•B
16
80
160
800
1,056
21.333
20.202
46.875
49.500
TTL
+
1
3
21
600
625
13.333
75.000
TTL
+
–
11
2
32
480
525
16.6832
59.9405
TTL
–
–
13
2
34
400
449
14.2681
70.0863
TTL
+
+
38
2
59
350
449
14.2681
70.0863
TTL
–
TTL
–
13
2
34
400
449
14.2681
70.0866
TTL
+
TTL
+
38
2
59
350
449
14.2681
70.0866
TTL
–
dot
dot
dot
dot
dot
µ
s
ns
kHz
MHz
+/–
H
H
H
H
H
ms
Hz
+/–
FRONT PORCH
SYNC
BACK PORCH
VIDEO PERIOD
1H (a+b+c+d)
1 dot
1/H
1/dot
LEVEL
SYNC POLARITY
FRONT PORCH
SYNC
BACK PORCH
VIDEO PERIOD
1V (w+x+y+z)
1/v
LEVEL
SYNC POLARITY
H
S
Y
N
C
V
S
Y
N
C
17
108
55
720
900
31.7774
35.3082
31.4689
28.322
14
96
50
640
800
31.7776
39.7219
31.4688
25.175
TTL
0.7Vp-p
75
Ω
load
R•G•B
VGA
IBM
LEVEL
TYPE
VIDEO
MODE
TEXT
720 dot
350 line
400 line
Graphic
640 dot
350 line 400 line 480 line
a
b
c
d
w
x
y
z
VESA
Guideline
VESA
Standard
VESA
Standard
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.
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