Basler slA1000-30fm, User Manual, Page: 60 / 166

Image Acquisition Control
52 Basler scout light
Changing the Exposure Time Base
Normally, the exposure time is adjusted by setting the value of the Exposure Time Raw parameter
as explained above. However, if you require an exposure time that is longer than what you can
achieve by changing the value of the Exposure Time Raw parameter alone, the Exposure Time
Base Abs parameter can be used to change the exposure time base.
The Exposure Time Base Abs parameter value sets the exposure time base in µs and this
parameter can be used to change the exposure time base.
On all camera models except the slA750-60fm, the default exposure time base is 20 µs and the
time base can be changed in increments of 1 µs.
On slA750-60fm cameras, the default exposure time base is 31 µs and the time base can be
changed in increments of 31 µs.
You can set the Exposure Time Raw and Exposure Time Base Abs parameter values from within
your application software by using the pylon API. The following code snippet illustrates using the
API to set the parameter values:
Camera.ExposureMode.SetValue( ExposureMode_Timed );
Camera.ExposureTimeRaw.SetValue( 100 );
Camera.ExposureTimeBaseAbs.SetValue( 186 );
For detailed information about using the pylon API, refer to the Basler pylon Programmer’s Guide
and API Reference.
You can also use the Basler pylon Viewer application to easily set the parameters.
For more information about the pylon Viewer, see Section 3.1 on page 17 .