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8 Acquisition Control
This chapter provides detailed information about controlling image acquisition.
Triggering image acquisition
Setting the exposure time
Controlling the camera's image acquisition rate
Variation of the camera's maximum allowed image acquisition rate according to the camera settings
8.1
Overview
This section presents an overview of the elements involved with controlling the acquisition of images.
Three major elements are involved in controlling the acquisition of images:
Acquisition Start and Acquisition Stop commands and the Acquisition Mode parameter
The exposure start trigger
Exposure time control
When reading the explanations in the overview and in this entire chapter, keep in mind that
the term frame is typically used to mean a single acquired image.
Acquisition Start and Stop Commands and the Acquisition Mode
The Acquisition Start command prepares the camera to acquire frames. The camera cannot acquire frames
unless an Acquisition Start command has first been executed.
A parameter called the Acquisition Mode has a direct bearing on how the Acquisition Start command
operates.
If the Acquisition Mode parameter is set to Single Frame, you can only acquire one frame after executing an
Acquisition Start command. When one frame has been acquired, the Acquisition Start command will expire.
Before attempting to acquire another frame, you must execute a new Acquisition Start command.
If the Acquisition Mode parameter is set to Continuous, an Acquisition Start command does not expire after
a single frame is captured. Once an Acquisition Start command has been executed, you can acquire as many
frames as you like. The Acquisition Start command will remain in effect until you execute an Acquisition Stop
command. Once an Acquisition Stop command has been executed, the camera will not be able to acquire
frames until a new Acquisition Start command is executed.
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