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Camera Link HS Interface
Xtium-CLHS PX8 User's Manual
Camera Link HS Interface
Camera Link HS Overview
Note: The following text is extracted from the AIA document “Specifications of the
Camera Link HS Interface Standard for Digital Cameras and Frame Grabbers” version 1.0 RC5,
©2012 AIA. Refer to their site
Camera Link HS (CLHS) is a global standard defining the communications between a camera and a
frame grabber. The CLHS standard offers high performance control functions and scalable data
transfer bandwidths between the camera and frame grabber. The data transmission technology
employed in CLHS is available from multiple suppliers and has roadmaps to higher bit rates driven
by the telecom market. The use of widely used technology guarantees a low component cost and
long term supply for machine vision customers.
The packet based protocol used in CLHS is machine vision specific, thus delivering the high image
reliability needed in modern machine vision systems. CLHS Messages are defined independent of
the physical layer, allowing CLHS to adopt new physical layers as they become available.
Currently CLHS employs simple 8b/10b technology in the M-Protocol and the XAUI-64/66 encoding
for the X-Protocol. CLHS supports real time triggers (Pulse) and General Purpose Input/Output
(GPIO), using a priority methodology that results in CLHS having the lowest latency and jitter of
any packet based protocol. Designed with forward error correction for real time messages, plus
CRC and hardware based resend mechanisms for video and command packets, ensure data
reliability.
Rights and Trademarks
The AIA, as sponsor of the Camera Link HS committee, owns the U.S. trademark registration for
the Camera Link HS logo as a certification mark for the mutual benefit of the industry. Usage of the
Camera Link HS logo with any product(s) implies compliancy with the Camera Link HS standard.
