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10.6.4 Trigger operation controlled by pulse width (PWC)
In this mode the accumulation time is equal to the trigger pulse width. Here it is possible to
have a long time exposure. The maximum recommended time is <60 frames.
If the sync mode is set at
―
Sync
‖
, the exposure time is the same for both Camera #0 and #1 as
the trigger to Camera #0 is applied to Camera #1.
In PWC mode, only LVAL asynchronous accumulation is effective.
For details of the timing, please refer to chapter 8.4 and fig. 44 and 45.
To use this mode:
Set function:
Acqusition mode
:
Frame Start
Trigger mode
:
ON
Sync mode
:
Refer to 10.5.4
Exposure Mode
:
Trigger Width
Exposure time
:
Exposure time/Exposure time(us)/
Exposure time(Raw)
Other functions
Input:
External Trigger
Trigger Source
This function can be set by selecting Pulse-width control in Exposure mode of JAI Acquisition Control.
However, Acquisition Mode,
Sync Mode,
Exposure Time, and so on should be set.
Important Note:
The minimum duration of the trigger is 2L. The minimum period of trigger is as follows.
SYNC Mode Smearless
Enable
Minimum Trigger interval (Line)
SYNC Mode
=SYNC
False
LVAL
ASYNC
(Trigger Pulse width: Min.2L) + Frame interval in
continuous operation(L) + 4L
True
LVAL
ASYNC
(Trigger Pulse width:Min.197L+2L) + Frame interval in
continuous operation(L) + 4L
SYNC Mode
=ASYNC
False
LVAL
ASYNC
(Trigger Pulse width: Min.2L) + Frame interval in
continuous operation (L) + 4L
True
LVAL
ASYNC
(Trigger Pulse width : Min.197L+2L) + Frame interval
in continuous operation(L) + 4L
Pulse-width trigger is available only in LVAL Async accumulation.
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