VCC-G20S20A
Rev.900-651-33-00
©2010 CIS Corporation. All rights reserved.
10
External VD
±5
μ
s
External HD
VD Reset Pulse
15.6
μ
s
15.6
μ
s
1HD: 62.5
μ
s
Normal shutter mode
Each scan operation, HD/VD external sync input, and sync output is valid. When adding external sync
input, please follow HD/VD input conditions shown below.
Restart-Reset mode (Long time exposure mode)
Restart-reset mode (Long time exposure mode) is valid at normal shutter mode, with setting the shutter to OFF,
HD/VD sync input ON, and adding external EXT HD input. With adding EXT VD at random timing with over
1VD, data for one screen image is read out. This function is useful when sensitivity with regular exposure
time is not sufficient or when indicating the locus of moving object. Restart-reset mode corresponds to all
scanning modes.
Fixed trigger shutter mode (Sync Reset Mode)
With trigger input, images at any timing can be captured with setting exposure time by the shutter value of
switch at camera rear. Internal SYNC and VD are reset right after completion of exposure time so that the
video output signals are read out right away. HD external input is valid but VD external input invalid.
Exposure time = Value of switch at rear
Conditions: Trigger input pulse width shall be 4
μ
s
～
250ms, Positive Logic
The shortest trigger cycle = 1 frame + 5H
Pulse width trigger shutter mode 1 (Sync Reset Mode)
With trigger input, images at any timing can be captured with setting exposure time by trigger pulse width.
Internal SYNC and VD are reset right after completion of exposure time so that the video output signals are
read out right away. HD external input is valid but VD external input invalid.
Exposure time = Trigger pulse width (
μ
s) + 5
μ
s typical
Conditions: Trigger input pulse width shall be 4
μ
s
～
250ms, Positive Logic
The shortest trigger cycle = 1 frame + 5H
