VCC-G20S20A
Rev.900-651-33-00
©2010 CIS Corporation. All rights reserved.
11
Trigger Input
Discharge
Read OUT
Exposure Time
Exposure = Trigger Width + 5
μ
s
Exposure Time
4.4
9.4
±0.035
μ
s
±0.035
μ
s
Pulse width trigger shutter mode 2 (Sync Non-Reset Type)
With trigger input, images at any timing can be captured with setting exposure time by trigger pulse width.
Signals are read out after waiting for the external VD (single) input so that the video output signals are read
out at the controlled timing. The down edge phase of external HD/VD signals should be matched. The time
frame to input an external single VD after trigger input is fallen, should be set between 150
μ
s to 100ms.
Exposure time = Trigger width (
μ
s) + 5
μ
s typical
Conditions: Trigger input pulse width shall be 4
μ
s
～
250ms, Positive Logic
The shortest trigger cycle = Trigger pulse width + VD input time + 1 frame + 2H
Caution 1: When the next trigger is input before the completion of video signals output for the prior trigger,
the image could be improper.
Caution 2: Smear or blooming could occur when strong incident light is extensively illuminated, with setting
the electric shutter at high speed. To avoid this smear or blooming, lower the volume of incident light or use
a stroboscopic light source to adjust the light volume.
Caution 3: Please refer to the timing chart below for the actual time when exposure starts after trigger is
input, and the actual time when exposure completes at pulse width trigger shutter mode.
