Image Acquisition Control AW00097603000
98 Basler aviator GigE
7.9 Maximum Allowed Frame Rate
In general, the maximum allowed acquisition frame rate on any aviator camera may be limited by
several factors:
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.
The setting for the sensor digitization taps feature. If this feature is set for four taps, you will be
able to acquire frames at a higher rate than if it is set to one tap.
The binning feature. If binning is enabled, the maximum allowed frame rate will increase.
The setting for the prelines feature. If you use a higher prelines setting, you can acquire fewer
frames per second. (This is especially true when a small AOI is used).
The amount of time it takes to read an acquired frame out of the imaging sensor and into the
camera’s frame buffer. This time varies depending on the height of the frame. Frames with a
smaller height take less time to read out of the sensor. The frame height is determined by the
camera’s AOI Height settings.
The exposure time for acquired frames. If you use very long exposure times, you can acquire
fewer frames per second.
There are two ways that you can determine the maximum allowed acquisition frame rate with your
current camera settings:
You can use the online frame rate calculator found in the Support section of the Basler
website:
www.baslerweb.com
You can use the Basler pylon API to read the value of the camera’s Resulting Frame Rate Abs
parameter (see the next page).
Note that the maximum allowed frame rate decreases if the Image AOI is
significantly displaced from the sensor’s center. This is particularly true for a
displacement towards the upper part of the sensor.
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 7.6 on page 87.
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