Frame Start Trigger Mode = On - Basler GIGE VISION ace acA640-100gm/gc Manual

Image Acquisition Control
If the parameter is enabled and is set to a value greater than the maximum allowed frame
acquisition rate with the current camera settings, the camera will generate frame start
triggers at the maximum allowed frame rate.
Exposure Time Control with the Frame Start Trigger Off
When the frame start trigger mode is set to off, the exposure time for each frame acquisition is
determined by the value of the camera's Exposure Time Abs parameter.
For more information about the camera's Exposure Time Abs parameter, see Section 6.5 on
page 70.
6.4.1.2
When the Frame Start Trigger Mode parameter is set to on, you must apply a frame start trigger
signal to the camera each time that you want to begin a frame acquisition.
The Frame Start Trigger Source parameter specifies the source signal that will be used as the frame
start trigger. The available selections for the Frame Start Trigger Source parameter are:
Software - When the frame start trigger source is set to software, the user triggers each frame
start by issuing a frame start TriggerSoftware command to the camera from the host PC.
Line 1 - When the frame start trigger source is set to line 1, frame start is triggered by applying
an externally generated frame start trigger signal (commonly referred to as a hardware trigger
signal) to physical input line 1 on the camera.
If the Frame Start Trigger Source parameter is set to Line 1, the user must also set the Frame Start
Trigger Activation parameter. The available settings for the Frame Start Trigger Activation
parameter are:
Rising Edge - specifies that a rising edge of the hardware trigger signal will make the frame
start trigger active.
Falling Edge - specifies that a falling edge of the hardware trigger signal will make the frame
start trigger active.
For more information about using a software trigger to control frame acquisition start, see
Section 6.4.2 on
For more information about using a hardware trigger to control frame acquisition start, see
Section 6.4.3 on
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Keep in mind that the camera will only react to frame start triggers when it is in a
"waiting for frame start trigger" acquisition status. For more information about the
acquisition status, see Section 6.1 on

Frame Start Trigger Mode = On

page 60.
page 64.
page 45 and Section 6.3 on page 50.
Basler ace