Basler A400K, User Manual

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Camera Interface
2-8 Basler A400k
DRAFT
2.3 Camera Link Implementation in the
A400
k
The A400k uses a National Semiconductor DS90CR287 as a Camera Link transmitter. For a
Camera Link receiver, we recommend that you use the National Semiconductor DS90CR288, the
National Semiconductor DS90CR288A or an equivalent. Detailed data sheets for these
components are available at the National Semiconductor web site (www.national.com). The data
sheets contain all of the information that you need to implement Camera Link, including
application notes.
The A400k uses a National Semiconductor DS90LV048A differential line receiver to receive the
RS-644 camera control input signals and the serial communication input signal defined in the
Camera Link specification. A DS90LV047A differential line transmitter is used to transmit the serial
communication output signal defined in the specification. Detailed spec sheets for these devices
are available at the National Semiconductor web site (www.national.com).
The A402k uses the base configuration of Camera Link with one differential line transmitter. The
transmitter in the camera is designated as “Transmitter X.” The schematic in Figure 2-5 shows the
interface for the A402k and a typical implementation for the frame grabber interface.
The A403k and the A404k (when set for 4 tap output) use the medium configuration of Camera
Link with two differential line transmitters. The transmitters in the camera are designated as
“Transmitter X” and “Transmitter Y.” The schematic in Figure
2-6 shows the interface for the A403k
and a typical implementation for the frame grabber interface.
The A404k (when set for 8 tap output) uses the full configuration of Camera Link with three
differential line transmitters. The transmitters in the camera are designated as “Transmitter X”,
“Transmitter Y” and “Transmitter Z.” The schematic in Figure
2-7 shows the interface for the A404k
and a typical implementation for the frame grabber interface.
L
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, TTL data must be
sampled on the rising edge of the receive clock, and on others, it must be sampled
on the falling edge. Also, some devices are available which let you select either rising
edge or falling edge sampling. Please consult the data sheet for the receiver that you
are using for specific timing information.