Pulse Width Control Trigger Mode; Lval_Sync Timing - IAI cm-140ge User Manual

CM-140GE / -RA/-UV / CB-140GE / -RA
TRI G
CCD exposure
EEN
FAVL
When the trigger is input while FVAL is LOW,
the accumulation is LVAL async mode.

8.5.3 Pulse Width Control trigger mode

In this mode the accumulation time is equal the trigger pulse width. Here it is possible to have
long time exposure. The maximum recommended time is <2 seconds.
The accumulation can be LVAL synchronous or LVAL a-synchronous.
The resulting video signal will start to be read out after the trigger rising edge.
For timing details, refer to fig. 20. through fig. 25 and fig. 26 through 29.
To use this mode:
Set function:
Input:
Important notes on using this mode
Trigger pulse width >2 LVAL to <2 seconds

The following table shows minimum trigger interval in synchronous accumulation mode

Full scan
1/2 Partial
2/3 Partial
1/4 Partial
1/8 Partial
V Binning
In case of a-synchronous mode, the exposure time should be added to the above table.

LVAL_sync timing

GE:7.83µs ± 1µs
UV:15.66µs ± 1µs
2L (min.)
Exposure time
Fig.27. Edge Pre-select LVAL a-sync Timing
Trigger mode
Scanning
Vertical binning
Other functions and settings
Ext. trigger.
2L～3L
GE:
Full:61us～92us Vbinnig:78us～116us)
UV: Full:117.86µs ～176.7µs, V Binning 149.6µs ～224.4µs
Pulse Width Control (PWC)
Full, Partial
ON / OFF
GigE interface or 12-pin Hirose
1055 L
821 L
705 L
531 L
445 L
530 L
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