Test Images - Basler Racer User Manual

AW00118508000

8.11 Test Images

All cameras include the ability to generate test images. Test images are used to check the camera's
basic functionality and its ability to transmit an image to the host computer. Test images can be used
for service purposes and for failure diagnostics.
When the camera is in test image mode, the optics and the imaging sensor are not used. The lines
that make up each test image are generated internally by the camera's logic and are transmitted to
the host computer line by line.
If the camera is set to use an electrical signal applied to input line CC1, CC2, CC3
or CC4 as the source signal for the line trigger, these signals must be provided to
the camera in order to generate test images.
The Effect of Camera Settings on Test Images
When any test image is active, the camera's analog features such as analog gain, black level, and
exposure time have no effect on the images transmitted by the camera. For test images 1, 2, and
3, the camera's digital features, will also have no effect on the transmitted images. But for test
images 4 and 5, the cameras digital features will affect the images transmitted by the camera.
Make sure to disable shading correction before generating test images.
Enabling a Test Image Using Basler pylon
The Test Image Selector is used to set the camera to output a test image. You can set the value of
the TestImageSelector parameter to one of the test images or to Off.
You can set the TestImageSelector parameter from within your application software by using the
pylon API. The following code snippets illustrate using the API to set the parameter:
// set for no test image
camera.TestImageSelector.SetValue(TestImageSelector_Off);
// set for the first test image
camera.TestImageSelector.SetValue(TestImageSelector_Testimage1);
You can also use the Basler pylon Viewer application to easily set the parameters.
For more information about the pylon API and the pylon Viewer, see Section 3.1 on
Enabling a Test Image Using Direct Register Access
To enable a test image via direct register access, set the value of the Test Image Selector register
to Test Image 1, 2, 3, 4, or 5 as desired.
To disable test images, set the value of the Test image Selector Register to Off.
For more information about direct register access, see Section 3.2 on
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