VCC-120CXP1M/VCC-120CXP1R Preliminary Rev.905-0120-Z1
©2017 CIS Corporation. All rights reserved.
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4.8.2
External Sync Mode
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This is a mode to input external trigger signals to capture images by any preferred timings.
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Set "TriggerSelector" to "FrameStart".
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This is a mode to exposure for the period set with “ExposureTime” when a trigger signal is input.
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Set "TriggerActivation" to "RisingEdge" or "FallingEdge".
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Trigger cycle needs to be longer than (The frame for exposure time +1).
※
Fraction shall be rounded up to the nearest whole number to calculate. (Ex. In case of when exposure time is 1.5
frames, the trigger cycle shall be calculated as 2+1= 3 frames).
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Trigger operation is CLK sync H-V Sync reset.
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Trigger pulse width to be input shall be 30us
～
the maximum exposure time.
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The maximum exposure time depends on its ROI settings, “PixelFormat”, and link rate. For the details, please
refer to the Section 4.12. Exposure Time.
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Due to image sensor
’
s own characteristics, the timing from when a trigger is input to the image sensor to when
the actual exposure starts, would be different according to its shutter speed settings (Reset Vscan). Especially,
please be noted that the higher speed shutter is, the longer time is needed to start exposure from the trigger.
Standard Exposure Mode
※
Compared to the standard exposure at internal sync mode, its frame cycle becomes two frames more and over.
