AT-200GE
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9.7.3 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. The maximum
recommended exposure time is <2 seconds.
The resulting video signal will start to be read out after the trigger’s rising edge.
For timing details, refer to fig.35 through fig.40 and fig.44 through fig.46 .
To use this mode:
Set function:
Exposure mode
Pulse width control
Pixel format
RGB8, 10V1, 10V2
Partial scan
Fast Dump ON, ROI
Vertical binning
Binning vertical ON
GPIO settings
Important notes on using this mode
Trigger pulse width >2 LVAL to <2 seconds.
Minimum trigger interval is shown in the following table.
Mode
Minimum trigger interval
LVAL Sync
1.Exposure time < 1252L
1252L + 3L
2.Exposure time ≥ 1252L
Exposure time +2L
LVAL aSync
Exposure time + 1252L + 3L
Smearless is ON
Smearless time (141L) + Exposure time + 1252L + 3L
Note: 1) On the above table, 1252L is FVAL interval in normal continuous mode
2) In the vertical binning mode, 1L is different from the normal scanning. So, the minimum
trigger interval will be different.
Fig.44 Pulse Width Control.
