Basler raL2048-48gm User Manual Page 93

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AW00118302000 Acquisition Control
Basler racer GigE 83
8.2.3 Frame Start Triggering
The frame start trigger is used in conjunction with the line start trigger to control the acquisition of
the lines that will be included in each frame. In essence, the frame start trigger is an enabler for the
line start trigger, i.e., the camera will only react to line start triggers when the frame start trigger is
valid. When the frame start trigger is not valid, line start triggers will be ignored by the camera and
will not result in a line acquisition.
The first parameter associated with the frame start trigger is the Trigger Mode parameter. The
Trigger Mode parameter has two available settings: off and on.
8.2.3.1 Frame Start Trigger Mode = Off
When the Frame Start Trigger Mode parameter is set to off, selection of a source signal for the frame
start trigger is not required. With the mode set to off, the camera operates the frame start trigger
automatically. How the camera will operate the frame 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 make
the frame start trigger valid when it receives an Acquisition Start command. The trigger will
remain valid until enough lines have been acquired to constitute a complete frame and then
will become invalid.
If the Acquisition Mode parameter is set to continuous frame:
a. The camera will automatically make the frame start trigger valid when it receives an
Acquisition Start command.
b. The frame start trigger will be held valid until enough lines have been acquired to constitute
a complete frame and then will become invalid.
c. As soon as acquisition of lines for a next frame can start, the frame start trigger will
automatically be made valid, will be held valid until enough lines have been acquired to
constitute a complete frame, and then will become invalid.
d. The behavior in step c will repeat until the camera receives an Acquisition Stop command.
When an Acquisition Stop command is received, the frame start trigger will become
continuously invalid.
8.2.3.2 Frame Start Trigger Mode = On
When the Frame Start Trigger Mode parameter is set to on, you must select a source signal for the
frame start trigger. The Frame Start Trigger Source parameter specifies the source of the signal.
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 frame start
by issuing a TriggerSoftware command to the camera from the host PC. Each time a
TriggerSoftware command is received by the camera, the frame start trigger will become valid
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