Hitachi Kokusai Electric KP-F520WCL Operation Manual page 36

4. VD reset
When external VD pulse is inputted, internal HD/VD is reset.
(Note) If enter the external VD of cycle that does not fit the camera operation mode error occurs to the shutter time.
(a) Partial scan OFF
External VD specification: 18.00 Hz or less
High
VD (Trigger)
input (NEG)
Low
Data output
Camera VD
FVAL
VD output
(b) Partial scan ON
High
VD (Trigger)
input (NEG)
Low
Data output
Camera VD
FVAL
VD output
① to ③ are variable by start position of picture grabbing and width of picture grabbing
(Omit the figures after the decimal fractions).
Vertical 2 pixel addition OFF
① (14+ Width + ((2067- Width) / 4)) H more
② (12+ (Start position / 4) +1) H
③
More than 10μs
More than 2079H
3H
12H
3H
0.3μs
More than 10μs
3H
②
3H
0.3μs
(Width) H
2058H
①
③
Vertical 2 pixel addition ON
(7 + ((Width +1) / 2) + ((2073 - (((Width +1) / 2) * 2)) / 4)) H more
(7 + ((Start position +5) / 4) +1) H
((Width +1) / 2) H
1 H = 26.722 μs
1 H = 26.722 μs
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