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AT-030MCL
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9.3 Pulse Width Control Trigger Mode
In this mode the accumulation time is equal to the trigger pulse width. Here it is possible to
have a long time exposure. The accumulation can be automatically set either LVAL
synchronous or LVAL asynchronous in relation to FVAL and trigger timing. Refer to chapter
7.2.4. The maximum recommended exposure time is <2 seconds.
The resulting video signal will start to be read out after the trigger’s rising edge.
To use this mode:
Set function:
Trigger mode to “Pulse width control”. TR=2
Scanning
SC=0 ,1
Vertical binning
VB=0, 1
Other functions and settings
Input:
Ext. trigger. Camera Link or 12 Hirose TI=0, TI=1
Important notes on using this mode
Trigger pulse width >2 LVAL to <2 seconds.
Minimum trigger interval is shown in the following table.
Smear
Less
Mode
Minimum trigger interval
V-Binning OFF : 1L=16.24μs
V-Binning ON : 1L=20.07μs
OFF
LVAL Sync
1.If the trigger pulse width < 511L, then 511L + 3L
2.If the trigger pulse width ≥ 511L, then pulse width +2L
LVAL Async
Trigger pulse width (min. 2L) + 511L + 3L
ON
LVAL Async
Trigger pulse width(Min. 89L) + 511L + 5L
◆
Trigger pulse width = Smear Less time (87L) + Exposure (Min.
2L)
Note: 1) On the above table, 511L is FVAL interval on normal continuous mode
2) In the vertical binning mode, 1L is different from the normal scanning. So, the
minimum trigger interval will be different.
Note: If the trigger of Active High is input through 10pin, dummy pulses must be applied
more than one time when the camera is activated.