AL250 International Power Sources, Inc., AL250 Datasheet - Page 12

• Manufacturer Part Number: AL250
• Description: Video Scan Doubler
• Manufacturer: International Power Sources, Inc.

Remark: Values with “*” are programmable (S/W) or adjustable (H/W).
The horizontal video timing diagram is as follows.
The vertical video timing diagram is as follows.
HBlankStart (2Bh)
HBlankEnd (2Ch)
HSyncStart (22h)
HSyncEnd (23h)
HDEStart (20h)
HDEEnd (21h)
V display
V F-porch
V B-porch
VS width
V border
HS output
VS output
Fh
Fv
VIDHS
GHSync
GHREF
Reference start (0)
452*
29*
40*
4*
8*
ON(-)*
ON(-)*
31.4685 KHz
59.94 Hz
H Blank Interval (AL250)
Left Border Right Border
Output H Total
(24h, 29h)
Visible Picture
544*
25*
52*
4*
8*
ON(-)*
ON(-)*
31.250 KHz
50 Hz
H Blank Interval
(AL251)
452*
29*
40*
4*
8*
ON(-)*
ON(-)*
31.4685 KHz
59.94 Hz
AL250-06 Horizontal timing diagram
544*
25*
52*
4*
8*
ON(-)*
ON(-)*
31.250 KHz
50 Hz
July 28, 1999
AL250
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