User`s manual

Pixel Formats, Tap Geometries, and Color Filters
96 Basler aviator Camera Link
This transmission scheme is shown graphically in Figure 29.
Fig. 29: 1X2-1Y Tap Geometry
The advantage of selecting the 1X2-1Y tap geometry is that almost all commonly available Camera
Link frame grabbers can accept image data transmitted this format using a standard frame grabber
configuration file.
The disadvantage of selecting the 1X2-1Y tap geometry is that when an acquired image is being
read out of the imaging sensor and into the camera’s image buffer, the entire image must be read
into the buffer before pixel data transmission can begin. This leads to significant 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.
Basics of the 1X-2YE Tap Geometry
When a camera is set for the 1X-2YE tap geometry, the data for two pixels are transmitted on each
cycle of the Camera Link pixel clock (this is usually referred to as a "two tap" configuration". With
the 1X-2YE geometry, the pixel data are transmitted from the image memory to the frame grabber
in the following order:
 When image transmission begins, on the first cycle of the camera’s pixel clock the data for
pixel one in the first line of the image and for pixel one in the last line of the image (line N) are
transmitted.
 On the next cycle of the pixel clock, the data for pixel two in the first line and for pixel two in line
N are transmitted.
 On the next cycle of the pixel clock, the data for pixel three in line one and for pixel three in line
N are transmitted.
 This process continues, i.e., transmitting the data for two pixels on each clock cycle, until all of
the pixel data for line one and line N have been transmitted.
Tap 1
Tap 2
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data
Pixel
Data