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Figure 41 ►

Channel Link

operation.

CameraLink

The CameraLink

interface was especially developed for cameras in machine vision ap-

plications and provides high transfer rates and low latency. Depending on the configura-

tion (Base, Medium or Full) the transfer rate adds up to 680 MBytes/sec.

Cameras of the Baumer SXC series are equipped with a CameraLink

therewith able to transmit up to 240MBytes/sec.

9.1. Channel Link and LVDS Technology

CameraLink

bases upon the Channel Link

is more beneficial for machine vision.

Channel Link

in turn is an advancement of the LDVS (Low Voltage Differential Signaling)

standard – a low power, high speed interface standard.

The Channel Link

technology consists of a transmitter receiver pair, whereat 21, 28 or

48 single-ended data signals and a single-ended clock signal can be wired on transmitter

side. Within the transmitter the data is serialized with a ratio of 7:1. Afterwards the four re-

sulting data streams and the clock signal are transferred via five LVDS pairs. On receiver

side the four LVDS data streams and the LVDS clock are reordered to parallel signals and

afterwards forwarded to further processing.

9.2.

Camera Signals

The standard designates three different signal types, provided via standard CameraLink

cable:

9.2.1.

Serial

Communication

The standard regulates two LVDS pairs are allocated for asynchronous serial communi-

cation between the camera and the frame grabber. Cameras and frame grabbers should

support at least 9600 baud serial communication.

technology, but provides a specification, that

Base interface and