Basler raL2048-48gm User Manual Page 97

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AW00118302000 Acquisition Control
Basler racer GigE 87
8.2.4 Line Start Triggering
The line start trigger is used to start a line acquisition. Keep in mind that the camera will only react
to a line start trigger when the frame start trigger is valid. If the frame start trigger is invalid, line start
triggers will be ignored.
The first parameter associated with the line start trigger is the Trigger Mode parameter. The Trigger
Mode parameter has two available settings: off and on.
8.2.4.1 Line Start Trigger Mode = Off
When the Line Start Trigger Mode parameter is set to off, selection of a source signal for the line
start trigger is not required. With the mode set to off, the camera operates the line start trigger
automatically. How the camera will operate the line start trigger depends on the setting of the
camera’s Acquisition Mode parameter:
If the Acquisition Mode parameter is set to single frame, the camera will automatically begin
generating line start triggers when it receives an Acquisition Start command. The camera will
generate line start triggers until enough lines have been acquired to constitute a complete
frame and then will stop generating line start triggers.
If the Acquisition Mode parameter is set to continuous frame, the camera will automatically
begin generating line start triggers when it receives an Acquisition Start command. The camera
will continue to generate line start triggers until it receives an Acquisition Stop command.
The rate at which the line start triggers are generated will be determined by the camera’s Acquisition
Line Rate Abs parameter:
If the parameter is set to a value less than the maximum allowed line acquisition rate, the
camera will generate triggers at the rate specified by the parameter setting.
If the parameter is set to a value greater than the maximum allowed line acquisition rate, the
camera will generate line start triggers at the maximum allowed line rate.
For more information about the maximum allowed line rate, see Section 8.5 on page 135.
Exposure Time Control with Line Start Trigger Mode Off
When the line start trigger mode is set to off, the exposure time for each line acquisition is
determined by the value of the camera’s Exposure Time parameters.
For more information about the camera’s exposure time parameters, see Section 8.2.5.2 on
page 93.
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