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Chapter 5 Image Acquisition
© National Instruments Corporation 5-7 NI 17xx Smart Camera User Manual
Determining the Maximum Frame Rate
You can determine the maximum frame rate for your configuration in
software by reading the Max Frame Rate indicator in Vision Builder AI,
reading the Max Frame Rate property in LabVIEW, or reading the Max
Frame Rate indicator in MAX. When external triggering is enabled, do not
trigger faster than the maximum frame rate.
Note Sending a trigger faster than the maximum frame rate will result in a missed trigger.
Use Equation 5-2 to understand how software determines the maximum
frame rate:
(5-2)
where max frame rate for selected scan mode is determined by the
partial scan mode and binning mode, as described in the
Determining the Scan Mode section, and
min frame period is the minimum amount of time for the strobe
and trigger mode, as described in the Calculating the Minimum
Frame Period section.
Determining the Scan Mode
The maximum frame rate for selected scan mode is determined by the
partial scan mode and binning mode. Because the amount of data read out
of the sensor is less in 1/2 or 1/4 scan mode, the readout takes less time, and
you can achieve faster frame rates. The same is true of binning. When
binning is enabled, the readout takes less time, and you can achieve faster
frame rates. Refer to the Partial Scan Mode and Binning sections of
Chapter 3, Image Acquisition, for more information about partial scanning
and binning.
Use the maximum frame rate specifications for your smart camera in your
scan mode in Appendix A, Specifications, to determine the maximum frame
rate for selected scan mode.
max frame rate min max frame rate for selected scan mode
1
min frame period
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