User`s manual
AW00098504000 Image Acquisition Control
Basler ace Camera Link 79
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 if you are parameterizing the camera
using Basler pylon.
the value in the camera’s Exposure Time Raw register if you are parameterizing the camera
using direct register access.
For more information about setting the Exposure Time Abs parameter or the Exposure Time Raw
register, see Section 7.4 on page 94.
7.3.1.2 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 that you want to begin a frame acquisition. The Trigger
Source parameter specifies the source signal that will act as the frame start trigger. 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 the GPIO line on the camera. This assumes that the GPIO line on
the camera has been properly set to operate as an input line.
CC1 - When the source signal is set to CC1, you apply a frame start trigger signal to the
camera by injecting an externally generated electrical signal into CC1 in the Camera Link
interface.
CC2 - When the source signal is set to CC2, you apply a frame start trigger signal to the
camera by injecting an externally generated electrical signal into CC2 in the Camera Link
interface.
CC3 - When the source signal is set to CC3, you apply a frame start trigger signal to the
camera by injecting an externally generated electrical signal into CC3 in the Camera Link
interface.
If the Trigger Source parameter is set to line 1, line 2, CC1, CC2, or CC3, 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 hardware trigger signal will act as the frame
start trigger.
Falling Edge - specifies that a falling edge of the hardware trigger signal will act as the frame
start trigger.