VCC-SXCXP3NIR
Rev.905-0133-00
©2018 CIS Corporation. All rights reserved.
11
・
Notes for the delay time between trigger pulse and actual exposure start
Due to the image sensor’s features, there will be a timing difference between normal readout operation (exposure for
the next frame starts after reading out completes.) and overlapping readout operation (exposure for the next frame
starts while reading out.). There are some gap of timing between when a trigger is input to the image sensor, and
when exposure actually starts.
※
The variable value of delay time is determined depending on the settings of its frame rate and exposure time.
Values shall not be changed randomly under fixed condition.
□
Fixed Trigger Shutter Mode
This is a mode to start exposure by the inputting trigger signals, and to set its exposure time manually or with preset.
・
Set "TriggerSelectorAndActivation" 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 at normal readout [µs]
※Exposure delay tim e (A) on Tim ing chart
7
7
7
Exposure delay at overlapping [µs]
※Exposure delay
time (B) on Timing chart
62-72
31-36
31-36
