VCC-2CXP6R
Rev.905-0187-02
©2019 CIS Corporation. All rights reserved.
15
Effective Line : 1248H
Effective Line
～ ～
Exposure Out
1
TRIG IN
LVAL Out
FVAL Out
Video Out
Trigger input ignore period
Exposure Time
Exposure Time Delay
(A)
TRIG IN
Exposure Out
Exposure time delay
(B)
～ ～
1
Effective Line
Next trigger rise prohibited period : 3082H
Image
Header
Idle
Stream data
Stream data
Idle
Image
Header
Cxp Stream
5.10.
Pulse Width Trigger Shutter Mode (LineSync) H Sync. Trigger
(TriggerMode=On, TriggerSyncMode=LineSync, TriggerActivation=LevelHigh)
□
This is the mode to start exposure with external input trigger signals, and set the exposure time with pulse width of
the trigger signals.
□
Trigger operation is H sync., V sync. reset system.
The delay time (Exposure Time Delay
①
) from
detecting trigger edge in the camera to actually starting exposure is
4H~5H.
The delay time (Exposure Time Delay
②
) from
detecting trigger edge in the camera to end exposure is
4H+4.997
μs
~5H+4.997
μs
.
□
Since the external trigger signals synchronize with camera internal H signals, approx. 1H jitter occurs to Exposure
Time Delay
①
and
②
. In case of pulse width trigger mode, jitters may occur at both start and end edges of
exposure. At this time, exposure time would change so that flicker might be noticeable in the image, especially when
high-speed shutter is set. This flicker sometimes can be eliminated when fixed trigger shutter mode is used.
However, this problem can be solved by inputting a trigger pulse with synchronizing it to the camera internal H cycle
(LVAL).
□
Pulse width 1H(Min.) ~ Approx. 2frames
Functionally, there is no upper limitation, but noises such as dark noises shadings may be noticeable at long time
exposure.
□
There is an exposure time period for approx. 4.997µs at the edge right after exposure time.
SP OUT
(Exposure Out)
Actual exposure period
Approx. 4.997us
