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5. Various Settings
(5-1) Operation mode
●
Electronic shutter operation mode
Shutter mode
No shutter
Electronic shutter is not used.
Exposure time of imaging device is equivalent to one frame time.
Exposure is continuously performed for each frame.
＊When V reset is activated, the exposure time gets into 1/2 in 1/2 partial scan
mode and 1/4 in 1/4
partial scan mode.
Continuous shutter
Repeats exposure regardless of external trigger input (CC1).
Repetition pitch is per frame.
Asynchronous shutter
Electronic shutter is released each time the external trigger is input (CC1).
The permissible shortest repetition pitch is [exposure time + 1 frame time].
Shutter speed
High speed shutter
Shutter, the exposure time of which is less than one frame time, is used.
The shutter speed can be set in [multiples of H
＋
multiples of CLK].
Preset shutter
Electronic shutter is released each time the external trigger is input (CC1).
The permissible shortest repetition pitch is [exposure time + 1 frame time].
Pulse width control
In case of the asynchronous shutter setting only, the shutter, shutter speed of which corresponds to
the pulse width (during an effective level) of the external trigger input (CC1) , is released.
It is applied in pulse width control/asynchronous shutter mode.
Low speed shutter
Set as follows by communication command when exposing for over 500 msec. in pulse width
control mode.
Low speed shutter
→
ON
NORMAL/Trigger
→
Trigger
●
Pulse width control function allows to output image signals exposing thorough pulse width duration
Note : Exposure time is the same as that of High speed shutter in the case of Preset shutter mode.
It does not switch into high speed shutter mode even if trigger signal is input, as it goes into wait
state for trigger signal
Electronic shutter
operation mode
No shutter
Electronic shutter
High speed shutter
Preset shutter
Exposure time
＝０
Full frame exposure
Communication cammand
：
H'
20
Pulse width control
Communicationcammand
：
H'10
Lowspeed pulse widthcontrol
＝
ON
Communicationcammand
：
H'
11
Triggerselect
＝
ON
V reset ON
：
Within 1H after external trigger signal is applied,VD is output and image signal is output.
V reset OFF
：
After external trigger signal is applied, image signal is out put sync hronizi ng with internal VD.
Communication command
：
H'
20
Communication cammand
：
H'
10
Communicationcammand
：
H'
10
It automatically returns to highspeedshutter
modein 500msec. after trigger signal gets high.
Low speed shutter
Trigger input
＝
High
Trigger input
＝
Active_High
＊
On thecondition that the trigger polarity is positiv e.
V reset
ＯＮ
V reset
ＯＦＦ
Asynchronous shutter
Continuous shutter
Communicationcammand
：
H'
10
It automatically returns to highspeedshutter
mode in 500msec. after triggersignal gets high.
When Exposure time is
longer than 500 msec.
＊
Communic ationc ommand means control c ommand of s erial communic ation.
Refer to "6.Serial c ommunication command" for details.
V reset
ＯＮ
V reset
ＯＦＦ
V reset
ＯＮ
V reset
ＯＦＦ
Table 5-1 Description of the Electronic shutter mode
