User`s manual

AW00049313000 Acquisition Control
Basler runner 79
A primary feature of the acquisition start trigger is that after an acquisition start trigger signal has
been applied to the camera and the camera has entered the "waiting for frame start trigger"
acquisition status, the camera will return to the "waiting for acquisition start trigger" acquisition
status once a specified number of frame start triggers has been received. Before more frames can
be acquired, a new acquisition start trigger signal must be applied to the camera to exit it from
"waiting for acquisition start trigger". This feature is explained in greater detail in the following
sections.
There are two main parameters associated with the acquisition start trigger: the Acquisition Start
Trigger Mode parameter and the Acquisition Frame Count parameter.
8.2.2.1 Acquisition Start Trigger Mode = Off
When the Trigger Mode parameter for the acquisition start trigger is set to off, the camera will
generate all required acquisition start trigger signals internally, and you do not need to apply
acquisition start trigger signals to the camera.
8.2.2.2 Acquisition Start Trigger Mode = On
When the Acquisition Start Trigger Mode parameter is set to on, you must apply an acquisition start
trigger to the camera in order to make the camera’s acquisition state valid. Once an acquisition start
trigger has been applied to the camera and the acquisition state has become valid, the state will
remain valid until the camera has acquired the number of frames specified by the Acquisition Frame
Count parameter. At that point, the acquisition state will become invalid, and you must apply a new
acquisition start trigger to the camera before it can acquire any more frames.
When the Acquisition Start Trigger Mode parameter is set to on, you must select a source signal to
serve as the acquisition start trigger. The Acquisition Start Trigger Source parameter specifies the
source signal. The available selections for the Acquisition Start Trigger Source parameter are:
 Software - When the acquisition start trigger source is set to software, the user applies an
acquisition start trigger to the camera by issuing an acquisition start TriggerSoftware command
to the camera from the host PC.
 Line 1, line 2 or line 3 - When the acquisition start trigger source is set to line 1, line 2 or line 3,
the user applies an acquisition start trigger to the camera by injecting an externally generated
acquisition start trigger signal (commonly referred to as a hardware trigger signal) into physical
input line 1, line 2 or line 3 on the camera.
If the Acquisition Start Trigger Source parameter is set to Line 1, Line 2 or Line 3, the user must also
set the Acquisition Start Trigger Activation parameter. The available settings for the Acquisition Start
Trigger Activation parameter are:
 Rising Edge - specifies that a rising edge of the hardware trigger signal will act as the
acquisition start trigger.
 Falling Edge - specifies that a falling edge of the hardware trigger signal will act as the
acquisition start trigger.