Basler A640F, User Manual

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Basic Operation & Standard Features
BASLER A640
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3-11
DRAFT
3.2.6 Integrate Enabled Signal
A640
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cameras supply an “Integrate Enabled” signal. The Integrate Enabled (IntEn) signal goes
high when exposure begins and goes low when exposure ends. This signal can be used as a flash
trigger and is also useful when you are operating a system where either the camera or the object
being imaged is movable. For example, assume that the camera is mounted on an arm
mechanism and that the mechanism can move the camera to view different portions of a product
assembly. Typically, you do not want the camera to move during exposure. In this case, you can
monitor the IntEn signal to know when exposure is taking place and thus know when to avoid
moving the camera.
By default, the IntEn signal is assigned to physical output port 0 on the camera. See Section 2.5.2
for a description of the electrical characteristics of the camera’s physical output ports.
The assignment of the IntEn signal to a physical output port can be changed. See Section 6.7.11
for more information on changing the assignment of camera output signals to physical output
ports.
L
When you use the Integrate Enabled signal, be aware that there is a delay in the rise
and the fall of the signal in relation to the start and the end of exposure. See Figure
3-9 for details.