Basler DART BCON SERIES User Manual

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Basler DART BCON SERIES User Manual Manual pdf 86 page image

Image Acquisition Control AW0013690200078 Basler dart BCON9.7 Maximum Allowed Frame RateIn general, the maximum allowed acquisition frame rate on any dart BCON camera can be limitedby these factors: The exposure time for the acquisition of frames. If you use very long exposure times, you canacquire fewer frames per second. The amount of time it takes to read an acquired frame out of the imaging sensor and to prepareit for transmission out of the camera. The amount of time varies with the size of the frame.Frames with a smaller height take considerably less time. Frames with a smaller width mayalso take slightly less time. The amount of time it takes to transmit an acquired frame from the camera to the targetsystem. The amount of time depends on the target system’s capacity limits for data transferand the bandwidth assigned to the camera. Under certain conditions, overlapping image acquisition is not possible. This decreases thecamera’s maximum allowed frame rate. For more information about overlapping imageacquisitions, see Section 9.5 on page 73.To determine the maximum allowed acquisition frame rate with your current camera settings, usethe Basler pylon API to read the value of the camera’s ResultingFrameRate parameter. For moreinformation, see Section 9.7.1 on page 78.9.7.1 Using the Basler pylon API to Check theMaximum Allowed Frame RateYou can use the Basler pylon API to read the current value of the ResultingFrameRate parameterfrom within your application software using the Basler pylon API. The following code snippetillustrates using the API to get the parameter value:// Get the resulting frame ratedouble d = camera.ResultingFrameRate.GetValue();The ResultingFrameRate parameter takes all camera settings into account that can influence theframe rate and indicates the maximum allowed frame rate given the current settings.When the camera's acquisition mode is set to single frame, the maximum possibleacquisition frame rate can’t be achieved. This is because the camera performs acomplete internal setup cycle for each single frame and because it can’t beoperated with overlapped exposure.For more information about overlapped image acquisitions, see Section 9.5 onpage 73.