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Image Acquisition Control
9.14 Maximum Allowed Acquisition Frame
Rate (scA750-60 Only)
The information in this section only applies to scA750-60 gm/gc cameras. For
information about the other camera models, see Section 9.13 on page 163.
In general, the maximum allowed acquisition frame rate can be limited by two factors:

The sum of the exposure time plus the amount of time it takes to read the acquired image out
of the imaging sensor and into the camera’s frame buffer. (An acquired image is also known as
a frame.)
The exposure time is set by the user. If you use very long exposure times, you can acquire fewer
frames per second.
The readout time varies depending on the height of the frame. Shorter frames take less time to
read out of the sensor. The frame height is determined by the camera’s AOI Height settings.

The amount of time that it takes to transmit an acquired frame from the camera to your host
PC. The amount of time needed to transmit a frame depends on the bandwidth assigned to the
camera.
When the camera’s acquisition mode is set to single frame, the maximum possible
acquisition frame rate for a given AOI cannot be achieved. To achieve the
maximum possible acquisition frame rate, set the camera for the continuous
acquisition mode.
To determine the maximum allowed acquisition frame rate with your current camera settings, you
can read the value of the camera’s Resulting Frame Rate parameter. This parameter indicates the
camera’s current maximum allowed frame rate taking the AOI, exposure time, and bandwidth
settings into account.
For more information about AOI settings, see Section 12.4 on page 234.
For more information about the Resulting Frame Rate parameter, see Section 5.1 on page 57.
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