Remove Parameter Limits - Basler ace acA640-90gm User Manual

10.3 Remove Parameter Limits

For each camera feature, the allowed range of any associated parameter values is normally limited.
The factory limits are designed to ensure optimum camera operation and, in particular, good image
quality. For special camera uses, however, it may be helpful to set parameter values outside of the
factory limits.
The remove parameter limits feature lets you remove the factory limits for parameters associated
with certain camera features. When the factory limits are removed, the parameter values can be set
within extended limits. Typically, the range of the extended limits is dictated by the physical
restrictions of the camera's electronic devices, such as the absolute limits of the camera's variable
gain control.
The values for any extended limits can be determined by using the Basler pylon Viewer or from
within your application via the pylon API.
Currently, the limits can be removed from:
The gain feature.
Removing the parameter limits on the gain feature will only remove the lower limit. The lower
limit for the Gain parameter is reduced to 0. (For those cameras where the lower limit is already
0, removing the limits has no effect.)
The maximum allowed frame rate on acA640-100 cameras.
Removing the limit on the maximum allowed frame rate will let the camera operate at a higher
than normal frame rate for the current parameter settings.
For more information about the gain feature, see Section 10.1 on
For more information about the frame rate limit on acA640-100 cameras, see Section 7.12.3 on
page 129.
Removing Parameter Limits
To remove the limits for a parameter:
Use the Parameter Selector to select the parameter whose limits you want to remove.
Set the value of the Remove Limits parameter.
You can set the Parameter Selector and the value of the Remove Limits parameter from within your
application software by using the Basler pylon API. The following code snippet illustrates using the
API to set the selector and the parameter value:
// Select the feature whose factory limits will be removed.
Camera.ParameterSelector.SetValue( ParameterSelector_Gain );
// Remove the limits for the selected feature.
Camera.RemoveLimits.SetValue( true );
// Select the feature whose factory limits will be removed.
Camera.ParameterSelector.SetValue( ParameterSelector_Framerate );
// Remove the limits for the selected feature.
Basler ace GigE
Standard Features
page 185.
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