Frame Start Trigger Mode = On - Basler ace acA640-90gm User Manual

If the parameter is enabled and is set to a value greater than the maximum allowed frame
rate with the current camera settings, the camera will generate frame start trigger signals
at the maximum allowed frame rate.
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 7.1 on
Exposure Time Control with the Frame Start Trigger Off
When the Trigger Mode parameter for the frame start trigger 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 7.5 on
page 87.
7.4.1.2

Frame Start Trigger Mode = On

When the Trigger Mode parameter for the frame start trigger is set to on, you must apply a frame
start trigger signal to the camera each time you want to begin a frame acquisition. The Trigger
Source parameter specifies the source signal that will act as the frame start trigger signal. The
available selections for the Trigger Source parameter are:
Software - When the source signal is set to software, you apply a frame start trigger signal to
the camera by executing a Trigger Software command for the frame start trigger on the host
PC.
Line 1 - When the source signal is set to line 1, you apply a frame start trigger signal to the
camera by injecting an externally generated electrical signal (commonly referred to as a
hardware trigger signal) into physical input line 1 on the camera.
If the Trigger Source parameter is set to Line 1, you must also set the Trigger Activation parameter.
The available settings for the Trigger Activation parameter are:
Rising Edge - specifies that a rising edge of the electrical signal will act as the frame start
trigger.
Falling Edge - specifies that a falling edge of the electrical signal will act as the frame start
trigger.
For more information about using a software trigger to control frame acquisition start, see
Section 7.4.2 on page
For more information about using a hardware trigger to control frame acquisition start, see
Section 7.4.3 on page
Basler ace GigE
80.
82.
Image Acquisition Control
page 63 and Section 7.3 on page 69.
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