AT-200CL
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9.2. Edge Pre-select Trigger Mode
An external trigger pulse initiates the capture, and the exposure time (accumulation time) is
the fixed shutter speed set by SH or PE. The accumulation can be automatically set either
LVAL synchronous or LVAL asynchronous in relation to FVAL and trigger timing.
Refer to chaper 7.2.4
The resulting video signal will start to be read out after the selected shutter time.
For timing details, refer to fig27 . through fig35.
To use this mode:
Set function:
Trigger mode to “Edge Pre-select”
TR=1
Scanning
SC=0, 1
Vertical binning
VB=0, 1
Shutter mode to normal or programmable SM=0 through 2
Shutter speed
SH=0 through 11
Programmable exp.
PE=0 through 1252
Other functions and settings
Input:
Ext. trigger. Camera Link or 12 HiRose TI=0, TI=1
Important notes on using this mode
Active Trigger pulse >2 LVAL to <1 FVAL
Minimum Trigger interval is shown in the following table.
Mode
Minimum trigger interval
LVAL Sync
1252L + 1L
LVAL Async
Exposure time + 1252L + 3L
Smearless is ON
Smearless time(181L) + Maximum exposure time +1252L + 1L
Note: 1) On the above table, 1252L 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.
