Image Acquisition Control AW00097603000
72 Basler aviator GigE
7.3.5 Using a Hardware Acquisition Start Trigger
Signal
7.3.5.1 Introduction
If the Trigger Mode parameter for the acquisition start trigger is set to on and the Trigger Source
parameter is set to input line 1 or line 2, an externally generated electrical signal injected into the
selected source will act as the acquisition start trigger signal for the camera. This type of trigger
signal is generally referred to as a hardware trigger signal or as an external acquisition start trigger
signal (ExASTrig).
A rising edge or a falling edge of the ExASTrig signal can be used to trigger acquisition start. The
Trigger Activation parameter is used to select rising edge or falling edge triggering.
When the Trigger Mode parameter is set to on, the camera will initially be in a "waiting for acquisition
start trigger" acquisition status. It cannot react to frame start trigger signals when in this acquisition
status. When the appropriate ExASTrig signal is applied to the selected source (e.g, a rising edge
of the signal for rising edge triggering), the camera will exit the "waiting for acquisition start trigger"
acquisition status and will enter the "waiting for frame start trigger" acquisition status. It can then
react to frame start trigger signals. When the number of frame start trigger signals received by the
camera is equal to the current Acquisition Frame Count parameter setting, the camera will return to
the "waiting for acquisition start trigger" acquisition status. When a new ExASTrig signal is applied
to the selected source, the camera will again exit from the "waiting for acquisition start trigger"
acquisition status and enter the "waiting for frame start trigger" acquisition status.
For more information about setting the camera for hardware acquisition start triggering and
selecting the input line to receive the ExASTrig signal, see Section 7.3.5.3.
For more information about the electrical requirements for input line 1 and line 2, see Section 5.7
on page 38.
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