Hitachi CM650ET - Manual (Page 11)

Microprocessor-based preset functions can store 26 sets of geometry settings including
the standard settings.
The following industrial standard settings have been
programmed by the factory.
No. Video Mode Name Horizontal Video Mode
(with Resolution and Vertical Frequency) Frequency
1 VGA 640 70 Hz 31.47 VGA
2 VESA 640 85 Hz 37.86
3 VESA 800 X 85 Hz 53.67 VESA
4 VESA 1024 75 Hz 60.02 VESA
5 VESA 1024 85 Hz 68.68 VESA
6 VESA 1152 75 Hz 67.50 VESA
NOTE :
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Input signals with approximately the same frequencies may be regarded as the same
signal.
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The following horizontal timing conditions are recommended (at sync. H, V
separate or H/V composite).
for 31 45 horizontal frequency:
Horizontal front porch should be more than 0.1
Horizontal sync. width should be within 1 3.8
Horizontal back porch should be more than 1.2
Horizontal blanking width should be more than 3.5
for 45 69 horizontal frequency:
Horizontal front porch should be more than 0.1
Horizontal sync. width should be within 1 .O 3.0
Horizontal back porch should be more than 1
Horizontal blanking width should be more than 3.0
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The following vertical timing conditions are recommended.
Vertical front porch should be more than 10
Vertical sync. width should be less than 200
Vertical back porch should be more than 400
Vertical blanking width should be more than 500
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In case the front or back porch is extremely long, or the data display time is
extremely short, it may not be able to set the expected size and position.
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Standard settings are subject to change without notice.
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