Image Acquisition Control AW00089317000
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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 frame", 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.
Acquisition Start Trigger
The acquisition start trigger is essentially an enabler for the frame start trigger.
The acquisition start trigger has two modes of operation: off and on.
If the Trigger Mode parameter for the acquisition start trigger is
set to off, the camera will generate all required acquisition start trigger signals internally, and
you do not need to apply acquisition start trigger signals to the camera.
set to on, the initial acquisition status of the camera will be "waiting for acquisition start trigger"
(see Figure 50 on page 85).
When the camera is in this acquisition status, it cannot react to frame start trigger signals.
When an acquisition start trigger signal is applied to the camera, the camera will exit the
"waiting for acquisition start trigger" acquisition status and enter a "waiting for frame start
trigger" acquisition status. The camera can then react to frame start trigger signals. The
camera will continue to react to frame start trigger signals until the number of frame start
trigger signals it has received is equal to an integer parameter setting called the Acquisition
Frame Count. At that point, the camera will return to the "waiting for acquisition start trigger"
acquisition status and will remain in that status until a new acquisition start trigger signal is
applied.
As an example, assume that the Trigger Mode parameter is set to on, the Acquisition Frame
Count parameter is set to three, and the camera is in a "waiting for acquisition start trigger"
acquisition status. When an acquisition start trigger signal is applied to the camera, it will exit
the "waiting for acquisition start trigger" acquisition status and enter the "waiting for frame start
trigger" acquisition status. Once the camera has received three frame start trigger signals, it will
return to the "waiting for acquisition start trigger" acquisition status. At that point, you must apply
a new acquisition start trigger signal to the camera to make it exit "waiting for acquisition start
trigger".
Frame Start Trigger
Assuming that an acquisition start trigger signal has just been applied to the camera, the camera
will exit from the "waiting for acquisition start trigger" acquisition status and enter a "waiting for
frame start trigger" acquisition status. Applying a frame start trigger signal to the camera at this point
will exit the camera from the "waiting for frame start trigger" acquisition status and will begin the
process of exposing and reading out a frame (see Figure 50 on page 85). As soon as the camera
is ready to accept another frame start trigger signal, it will return to the "waiting for frame start
trigger" acquisition status. A new frame start trigger signal can then be applied to the camera to
begin another frame exposure.
The frame start trigger has two modes: off and on.
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