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4. Initial set signals
The following signals are initially set. The settings may be different depending on the computer type. In
this case, adjust the settings referring to pages 16, 17.
Connection to the RGB signal terminal(continued)
Back porch(b)
Back porch(b)
Sync.(a)
Front porch(d)
Active(c)
Sync.(a)
Front porch(d)
Active(c)
Computer/signal
Horizontal Timing (µs)
abcd
VGA-1 3.8 1.9 25.4 0.6
VGA-2 3.8 1.9 25.4 0.6
VGA-3 3.8 1.9 25.4 0.6
Mac 13" mode 2.1 3.2 21.2 2.1
VGA-3 (72Hz) 1.3 3.8 20.3 1.0
VGA-3 (75Hz) 2.0 3.8 20.3 0.5
SVGA (56Hz) 2.0 3.6 22.2 0.7
Computer/signal
Horizontal Timing (µs)
abcd
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
Computer/signal
Vertical Timing (lines)
abcd
VGA-1 2 59 350 38
VGA-2 2 34 400 13
PC-9800 8 25 400 7
TEXT 2 34 400 13
VGA-3 2 33 480 10
Mac 13" mode 3 39 480 3
VGA-3 (72Hz) 3 28 480 9
VGA-3 (75Hz) 3 16 480 1
VGA-3 (85Hz) 3 25 480 1
Computer/signal
Vertical Timing (lines)
abcd
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
PC-9800 3.0 3.8 30.4 3.0
TEXT 3.8 1.9 25.4 0.6
VGA-3 (85Hz) 1.6 2.2 17.8 1.6
SVGA (60Hz) 3.2 2.2 20.0 1.0
SVGA (56Hz) 2 22 600 1
SVGA (60Hz) 4 23 600 1
XGA (85Hz) 1.0 2.2 10.8 0.5
XGA (85Hz) 3 36 768 1
