GigE VA Series User Manual page 24

VA GigE series
Exposure Start Trigger
Applying an exposure start trigger signal to the camera will exit the camera from the waiting for exposure start
trigger acquisition status and will begin the process of exposing and reading out a frame (see Figure 8.1). As
soon as the camera is ready to accept another exposure start trigger signal, it will return to the waiting for
exposure start trigger acquisition status. A new exposure start trigger signal can then be applied to the camera to
begin another frame exposure.
The exposure start trigger has two modes: off and on.
If the Trigger Mode parameter is set to Off, the camera will generate all required exposure start trigger signals
internally, and you do not need to apply exposure start trigger signals to the camera. The rate at which the
camera will generate the signals and acquire frames will be determined by the way that you set several frame
rate related parameters.
If the Trigger Mode parameter is set to On, you must trigger exposure start by applying exposure start trigger
signals to the camera. Each time a trigger signal is applied, the camera will begin a frame exposure. When
exposure start is being triggered in this manner, it is important that you do not attempt to trigger frames at a rate
that is greater than the maximum allowed (There is a detailed explanation about the maximum allowed frame
rate at the end of this chapter.). Exposure start trigger signals applied to the camera when it is not in a waiting for
exposure start trigger acquisition status will be ignored.
Figure 8.1 Exposure Start Triggering
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