User`s manual

External Trigger
When you select External Trigger, the CSS forces the SLS
“offline.” Instead of assuming triggering control, however,
it issues an enubling or arming command to the SLS, then
waits for an “external” trigger to the SLS to cause the SLS
to acquire an image.
The trigger input mode designated in the current SLS
configuration determines the source of the “external”
trigger signal. Thus, the source is either an o&al external
trigger signal from the J2 input (Edge Triggered mode), or
an internal trigger signal from the SLS itself (Level
Triggered mode, with the J2 input low).
When the trigger input mode is “Edge Triggered,” the 5X-S
acquires an image at the leading edge of a trigger signal and
sends it to the PC. After displaying the image, the CSS
issues another arming command to the SLS. (Note that if
the SLS receives another trigger signal before receiving
another arming command, the SIS ignores the trigger.)
When the trigger input mode is “Level Triggered,” and the
trigger input level is high, the SLS cannot acquire images at
all. However, when the trigger input level is low, the SLS
can acquire an image using its internal trigger signal
provided the CSS has issued an arming command to the
SLS. After displaying the image, the CSS issues another
arming command. With the next internal trigger, the SLS
acquires another image and sends it to the PC.
Keyboard/External Trigger
When you select Keyboard/External Trigger, operation is
identical to External Trigger operation, except that the CSS
waits for you to press the 7” key before issuing an
enabling or arming command to the SLS (see Keyboard
Trigger, page 6-8, and External Trigger, above).
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