Total Turnkey Solutions
HomeProductLatest News and EventsTechnical SupportContact Us

Technical & Applications Notes and more

Easy Find Index

Imaging Products
 
Basler "Camera Link" High Speed Camera

glo_rightarrow_sm.gif (78 bytes)The Evolution of Camera Link
glo_rightarrow_sm.gif (78 bytes)Camera Link Downloads

Technology
glo_rightarrow_sm.gif (78 bytes)Firewire ( IEEE-1394)
glo_rightarrow_sm.gif (78 bytes)Camera Link
glo_rightarrow_sm.gif (78 bytes)CMOS

Camera Link Technology

There are many manufacturers that now offer line scan and area scan cameras using the new industry standard Camera Link™ interface. If you have struggled in the past with the complexities of interfacing an industrial camera with a frame grabber, then you will appreciate the advances incorporated in Camera Link cameras.

Some of the advantages of the new Camera Link interface are:
  • Much easier camera/frame grabber integration. Since the connectors, cables, data format, and control signals are defined, many of the problems seen in the past are eliminated.
  • Since the cables are an industry standard, users will be able to take advantage of competitive pricing.
  • Camera Link cables are smaller, more flexible, and less prone to breakage than in the past.
  • The high data rates of the chip sets used in Camera Link compatible devices can easily handle current image data transmission requirements and allow great expansion for the future.

If you are interested in the benefits of Camera Link technology and want to see if it can improve your system performance, call us today!


The Evolution of Camera Link

In late 2000, it became apparent to industrial camera manufacturers and frame grabber manufacturers alike, that customers were experiencing great difficulty interfacing cameras and frame grabbers. An ad-hoc committee was formed to investigate the possibility of developing a standard camera/frame grabber interface specific to the vision industry. The result of that investigation is the Camera Link standard. This new specification defines:

  • A standard connector that will be used on both the camera and the frame grabber
  • A standard cable to connect the camera and grabber
  • Formats for transmitting image data from the camera to the grabber
  • Four standard camera control inputs
  • A standard method for transmitting serial communication data between the camera and the grabber
  • A standard chip set that will be used in the camera and the grabber for image data transfer

The Channel Link Chip Set

In recent years, RS-644 LVDS technology has been used to transfer digital data. With RS-644 LVDS, a pair of wires is needed to transmit each data bit. This leads bulky cables that are expensive, prone to breakage and difficult to interface. Also, the maximum data rate in a typical camera application was limited to about 400 MBits/sec.

Camera Link is based the new Channel Link LVDS chip set manufactured by National Semiconductor. A Channel Link chipset consists of a transmitter and a receiver and is used to transfer digital data. This technology offers many advantages over the RS-644 LVDS technology. With Channel Link, 28 bits of data are transferred over just 4 pairs of wires and a fifth pair is used to transfer a required clock signal. This compares very favorably with the 56 wires that would be needed with RS-644 LVDS to do the same job. Channel Link is also capable of much higher data rates than standard LVDS. A single chipset can transfer up to 2.38 GBits/sec and the Camera Link standard allows the use of up to two chip sets. This high bandwidth capability is more than enough for current needs and allows for future expansion.


Camera Link Downloads

Basler has prepared a Camera Link Technology Brief, which explains Camera Link technology and describes how this technology has been implemented in Basler Cameras.

To download this document, use the link below.
Camera Link Technology Brief (329 KB - PDF File)


   1993-2005 Total Turnkey Solutions.