
Pixel Formats, Tap Geometries, and Color Filters
Basler aviator Camera Link 97
Once the pixel data for line one and line N have all been transmitted, the camera begins
transmitting pixel data for line two and for line N-1 (the next to last line). The data is transmitted
in a similar fashion to line one and line N, i.e., two pixels at a time in ascending order.
The camera continues transmitting the pixel data for the remaining lines in similar fashion.
This transmission scheme is shown graphically in Figure 30.
Fig. 30: 1X-2YE Tap Geometry
The advantage of selecting the 1X-2YE tap geometry is that when an acquired image is being read
out of the imaging sensor and into the camera’s image buffer, pixel data transmission can begin
before the entire image is read out and buffered. This means that the latency between the point
where an image is acquired and the point where the image data begins to be transmitted to the
frame grabber in the PC is very low.
The disadvantage of selecting the 1X-2YE tap geometry is that Camera Link frame grabbers must
typically use a specifically prepared frame grabber configuration file to be able to accept image data
transmitted in this fashion. Camera users should contact the manufacturer of their frame grabber to
obtain the necessary configuration file.
The 1X-2YE tap geometry can only be used when the camera is also set for four
tap sensor digitization. For more information about setting the tap digitization, see
Section 7.1 on page 101.
Tap 1
Tap 2
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