Remove Parameter Limits - Basler Racer User Manual

AW00118508000
8.3

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 following limits can be removed:
Gain: Removing this parameter limit reduces the lower limit for the Gain parameter to 0. For

more information, see Section 8.2.1 on
Target Gray Value: Removing this parameter limit increases the lower and upper limits of the

TargetGrayValue parameter used for auto functions. For more information, see Section 8.5 on
page 110.
Exposure Overhead: Removing this parameter limit allows you to improve line acquisition.

Also, it slightly increases the upper limit of the ExposureOverlapTimeMaxAbs parameter. For
more information, see Section 6.3.3 on
Exposure Overlap Time Max: Removing this parameter limit greatly increases the upper limit

of the ExposureOverlapTimeMaxAbs parameter. For more information, see Section 6.1.5.2 on
page 65, Section 6.2.1.2 on
To remove the limits for a parameter using Basler pylon:
1. Use the ParameterSelector parameter to select the parameter whose limits you want to
remove.
2. Set the RemoveLimits parameter to True.
You can set the ParameterSelector and the RemoveLimits parameter values from within your
application software by using the Basler pylon API. The following code snippet illustrates using the
API to set the parameter values:
// Select the parameter whose factory limits will be removed.
camera.ParameterSelector.SetValue(ParameterSelector_Gain);
// Remove the limits for the selected feature.
camera.RemoveLimits.SetValue(true);
You can also use the Basler pylon Viewer application to easily set the parameters. Note that the
remove parameter limits feature will only be available at the "guru" viewing level.
Basler racer Camera Link
page 102.
page 82, and Section 6.4.2 on
page 75, and Section 6.3.3 on
page 91.
page 82.
Features
106