AW00089317000 Image Acquisition Control
Basler ace GigE 87
7.2 Acquisition Start and Stop Commands
and the Acquisition Mode
Executing an Acquisition Start command prepares the camera to acquire frames. You must execute
an Acquisition Start command before you can begin acquiring frames.
Executing an Acquisition Stop command terminates the camera’s ability to acquire frames. When
the camera receives an Acquisition stop command:
If the camera is not in the process of acquiring a frame, its ability to acquire frames will be
terminated immediately.
If the camera is in the process of acquiring a frame, the frame acquisition process will be
allowed to finish and the camera’s ability to acquire new frames will be terminated.
The camera’s Acquisition Mode parameter has two settings: single frame and continuous. The use
of Acquisition Start and Acquisition Stop commands and the camera’s Acquisition Mode parameter
setting are related.
If the camera’s Acquisition Mode parameter
is set for single frame, after an Acquisition Start command has been executed, a single frame
can be acquired. When acquisition of one frame is complete, the camera will execute an
Acquisition Stop command internally and will no longer be able to acquire frames. To acquire
another frame, you must execute a new Acquisition Start command.
is set for continuous frame, after an Acquisition Start command has been executed, frame
acquisition can be triggered as desired. Each time a frame trigger is applied while the camera
is in a "waiting for frame trigger" acquisition status, the camera will acquire and transmit a
frame. The camera will retain the ability to acquire frames until an Acquisition Stop command is
executed. Once the Acquisition Stop command is received, the camera will no longer be able
to acquire frames.
When the camera's acquisition mode is set to single frame, the maximum possible
acquisition frame rate for a given AOI cannot be achieved. This is true because
the camera performs a complete internal setup cycle for each single frame and
because it cannot be operated with "overlapped" exposure.
To achieve the maximum possible acquisition frame rate, set the camera for the
continuous acquisition mode and use "overlapped" exposure.
For more information about overlapped exposure, see Section 7.11 on page 148.
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