VCC-SXCXP3R Rev. 905-0050-00
©2017 CIS Corporation. All rights reserved.
10
・
Notes for the delay time between trigger pulse and exposure start
Due to image sensor’s own characteristics, the timing, for standard operation and overlapped operation, from when a trigger is
input to the image sensor to when the actual exposure starts, would be different. With standard operation, the exposure for
the next frame starts after completion of reading out the prior frame. With overlapped operation, the next exposure starts
while reading out the prior frame.
※
The variable range of delay time is determined by the settings of frame rate and exposure time.
Under the certain conditions, it does not change randomly.
Fixed Trigger Shutter Mode
This is the mode to start exposure by the input trigger signals, and to set its exposure time manually or with preset.
･
Set
"TriggerSelector
AndActivation" to "FrameStartRisingEdge" or "FrameStartFallingEdge".
・
Trigger cycle needs to be longer than FVAL period (
≒
1/frame rate).
・
Trigger cycle needs to be longer than the exposure time.
・
Trigger operation is CLK Sync HV Sync Reset.
・
Trigger pulse width to be input shall be over 30us.
・
The maximum exposure time depends on ROI setting, "PixelFormat", and Link configuration.
Effective Line
～ ～
Exposure Out
Trigger
FVAL
Video Out
LVAL
Effective Line
Image
Header
Idle
Stream data
Stream data
Idle
Idle
Exposure delay time (A)
Cxp Stream
Image
Header
～ ～
Readout time
Exposure time
Trigger input forbidden period
Exposure delay time (B)
CXP1
CXP2
CXP3
Exposure Delay [µs]
For Standard operation
※
Timing chart: Exposure delay time (A)
7
7
7
Exposure Delay [µs]
For overlapped operation
※
Timing chart: Exposure delay time (B)
62-72
31-36
31-36
