Sunday, August 11, 2013

Manufacturer Link Cables For Machine Vision - Choose Properly


Camera link must have been a popular technology for transmitting broadband internet image data from industrial vision cameras for over a decade. The specifications and standard designations be put and administered by the automatic Imaging Association located distinict Ann Arbor Michigan, and its the global machine spectacle industry's trade group.

To his or her own credit, the management from the technology has been like successful, independent manufactures will then design and produce camera equipment, data acquisition devices, and interconnect cables and components with full confidence that they will integrate seamless with all other devices manufactured fewer than these standards.

As Manufacturer Link technology matured, changes in the standard essential to accommodate the demands of your machine vision industry by higher data throughputs as well as increasingly compact, lighter fat, components. The latter particularly critical the robotics industry. The changes have created a somewhat bewildering array of terms designed to describe various interface choices of and cable or plug styles. The purpose , once is to provide the lower user a quick conclusion of these terms to aid in proper component selection because of the projects.

Camera Link Configurations
The inexperienced configuration is cleverly classified "Base" configuration and carries signals over a single connector/cable. The cable type was created by 3M, and is called a MDR ("Mini D Ribbon") and the actual 26-pin male plug connector on both ends and is optimized for Low voltage Digital Signals (LVDS). The cable carries five (5) LVDS conductor pairs transmitting 24 (24) bits of serialized video data and four (4) timing signals. The connector also possesses four (4) LVDS discrete control signals and bout a (2) LVDS asynchronous successive communication channels for getting in contact with the camera. The maximum video throughput is couple of. 04 Gbits/sec.

The "Medium" configuration doubles the video rate by adding a primary 24 bits of video data more than a second cable, increasing highest possible throughput to 4. 08 Gbits/sec.

The "Full" size and shape adds another 16-bits of varied video data, creating a 64-bit wide video path could carrying 5. 44Gbit/sec.

The Camera Link cables train on 26 conductors, regardless from the configuration. The Base configuration requires an cable, while both the Moderate and Full configurations require two cables for the expanded data path.

Camera Link Connectors
The stopper styles for all configurations are similar, each is a 26 pin connector. The realistic connector, developed by 3M, was initially termed a MDR stopper. As industry demand for all smaller and lighter buildings grew, 3M created the state "Shrunk D Ribbon" connector design, which was named a SDR connector. This design significantly decreased circuit board space and camera interface disk space and reduced weight.

More consequences, Honda Connectors Ltd features their own version of an high density, miniature Camera Link connector that they can termed a HDR connector. Though this has prompted some confusion for buyers tasked with purchasing cable and connection components, the HDR from Honda, and SDR from 3M Corporation are 100% compatible and interchangeable.

Extending the AIA Standard
Some dslr camera and data acquisition hardware manufacturers provide the bandwidth of the camera Link interface beyond the limits imposed at the AIA specifications. These formats extend the width of this time "Full" configuration by reassigning redundant timing signals plenty as to produce an info path width as high as 80-bits, further increasing motion picture bandwidth However, such "nonstandard" configurations may lead to incompatibility issues with components manufactured included in the imposed standards.

Summary
Although there appears to be a bewildering variety of configurations and connector specification, the majority of cameras standby time with the camera link interface contain the simple Base Camera Bring configuration with standard MDR shoulder straps. Typically Medium or Full configurations are only required for very hi-res, high frame rate, software systems. It is the limitations in architecture and costs of the imaging device that restrict performance, and not evidence of interface itself.

You will rarely face a camera device with just too many 2. 0 megapixels operating above 30 frames/sec and a 16 bit data development. Such a device takes a data rate of just under 1. 0 Gbit/sec, easily managed every single Base Camera Link construction limit of 2. '04 Gbit/sec.

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