18
Mode Settings
To Use High-rate Scan Mode (B)
In external trigger shutter mode 1, you can increase the
rate by setting the shutter speed to the trigger pulse
width, and setting the high-rate scan mode switch on
the rear panel, the trigger interval, the external VD
phase and the external VD width.
The image is centered as shown below.
Notes
• In trigger shutter mode, video out signals are output
about 1 H later than the external VD.
• In high-rate scan mode, image output and WEN
rising edge are always synchronized, but WEN width
becomes undefined. High-rate scan mode cannot be
used in external trigger shutter mode 2.
1 H
BLKG interval Tb [line]
Effective image interval X [line]
Trigger interval T [line]
X lines 494 lines
External VD
Video out
WEN
Trigger
External VD
width TW [line]
Input of the trigger falling edge terminates the image
output.
Note that input of a trigger pulse is needed in the
effective image interval to control the ending of image
output, and this affects the image at the trigger rising
edge.
