Test Images; Test Image One - Basler A202K Manual

Operation and Features

3.10 Test Images

The test image mode is used to check the camera's basic functionality and its ability to transmit
an image via the video data cable. The test image can be used for service purposes and for failure
diagnostics. In test mode, the image is generated with a software program and the camera's digital
devices and does not use the optics, CCD sensor, VGCs or ADCs. Three test images are
available.
You can put the camera in test image mode using either the Camera Configuration Tool (see
Section 4.1 and the configuration tool's on-line help file) or binary commands (see Section 4.2).
With the Camera Configuration Tool, you use the Test Image Tab to select the test image. With
binary commands you use the Test Image command.
When a test image is active, the gain, offset, and exposure time have no effect on the
image.
Digital shift makes test images appear very light, therefore, digital shift should be dis-
abled when a test image is active.
Binning and Area of Interest will effect the appearance of test images.
If the camera is set for an exposure mode that uses an ExSync signal, the ExSync
signal must be present and must toggle in order for the camera to output test images.

3.10.1 Test Image One

The left half of test image one consists of lines
with repeated gray scale gradients ranging from
255 to 0 as you move from the center of the im-
age to the left. The top line of the left half starts
with a gray value of 255 on pixel 502. The sec-
ond line starts with a gray value of 254 on the
pixel 502. The third line starts with a gray value
of 253 on the pixel 502, and so on.
The right half of test image one consists of lines
with repeated gray scale gradients ranging from
255 to 0 as you move from the center of the im-
age to the right. The top line of the right half
starts with a gray value of 255 on the pixel 503.
The second line starts with a gray value of 254
on the pixel 503. The third line starts with a gray
value of 253 on the pixel 503, and so on.
If the camera is set for an exposure mode that
uses an ExSync signal, an ExSync signal is
required to output the test image. A test image
will be generated and transmitted on each cycle
of the ExSync signal.
If the camera is set for free-run, each cycle of the camera's internal control signal will trigger the
transmission of a test image.
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DRAFT
Figure 3-15: Test Image One
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BASLER A202