Basler A102K, Руководство пользователя, Страница: 74 / 133

Operation and Features
3-38 BASLER A102
k
DRAFT
If the camera is set for an 12 bit output mode, the
gradients range from 0 to 4095. The top line starts
with a gray value of 0 on pixel 1. The second line
starts with a gray value of 1 on the pixel 1. The
third line starts with a gray value of 2 on the pixel
1, and so on. (Because the test pattern is only
1392 x 1040 pixels, it will not include even one
complete gradient.)
Depending on the output mode selected on the camera, either the 8 bit test image, the 10 bit test
image, or the 12 bit test image will be active.
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.
3.12.2 Test Image Two
The basic pattern of test image two is similar to test image one. However, with test image two, the
pattern of the image moves up by one pixel each time the ExSync signal cycles. When you view
the output of a camera that is set for test image two, the pattern should appear to be gradually
moving up the screen. This feature is useful for determining if you camera is receiving and reacting
to an ExSync signal.
If the camera is set for free-run, each cycle of the camera’s internal control signal will cause the
pattern of the test image to move up by one pixel.
Figure 3-23: Test Image One (12 bit mode)