Basler A102K, User Manual, Page: 26 / 133

Camera Interface
2-10 BASLER A102
k
DRAFT
2.5.5.2 Video Data Output Modes
The
A102
k
and the
A102
kc
can output pixel data in a single 12 bit, a single 10 bit, or a single 8 bit
output mode. The
A102
kc
can also output data in a 3 x 8 bit RGB mode.
Operation in Single 12 Bit, Single 10 Bit, or Single 8 Bit Modes
In single 12 bit mode, on each clock cycle, the camera transmits data for one pixel at 12 bit depth,
a frame valid bit, a line valid bit and a data valid bit. The assignment of the bits is shown in Table
2-3.
The pixel clock is used to time data sampling and transmission. As shown in Figure 2-4 and Figure
2-5, the camera samples and transmits data on each rising edge of the pixel clock.
The frame valid bit indicates that a valid frame is being transmitted. The line valid bit indicates that
a valid line is being transmitted. Pixel data is only valid when the frame valid bit and the line valid
bit are both high. The data valid bit is not used and should be ignored.
Operation in single 10 bit mode is similar to single 12 bit mode except that the 2 least significant
bits output from the ADC are dropped and the 10 most significant bits of data per pixel are
transmitted.
Operation in single 8 bit mode is similar to single 12 bit mode except that the 4 least significant
bits output from the ADC are dropped and the 8 most significant bits of data per pixel are
transmitted.
L
The single 12 bit output mode was added in January 2004. It is not available on
older
A102
k
camera.
L
The data sequence outlined below, along with Figure 2-4 and Figure 2-5, describe
what is happening at the inputs to the Camera Link transmitter in the camera.
Note that the timing used for sampling the data at the Camera Link receiver in the
frame grabber varies from device to device. On some receivers, data must be sam-
pled on the rising edge of the pixel clock (receive clock), and on others, it must be
sampled on the falling edge. Also, some devices are available which allow you to
select either rising edge or falling edge sampling. Please consult the data sheet for
the receiver that you are using for specific timing information.