Frame grabbers and image acquisition products

FRAME GRABBERS AND IMAGE ACQUISITION

Processing power for all levels

Teledyne DALSA PC2-CamLink - CameraLink frame grabber

The PC2-CamLink from the Canadian manufacturer Teledyne DALSA is a unique frame grabber using the CameraLink interface, that is available at a very attractive entry-level price. This frame grabber can acquire from area scan and line scan cameras using the CameraLink BASE configuration. Despite its low entry-level price, this frame grabber provides all the required functionality such as camera control signals, trigger, strobe and opto-decoupled I/Os via a separate board. So-called shaft encoders and start/stop triggers are available for use with production processes such as synchronisation to the speed of a conveyor belt. The card is suitable for the PCI bus (5V and 3.3V) and is therefore compatible with all commonly available and PCs.

Verification mechanisms implemented in hardware guarantee the immediate reporting of transmission errors and (partial) image loss. Thanks to this precise information about the location of any error that occurs, users are better able to optimise their systems. DALSA describes this functionality as "trigger-to-image reliability". It not only offers outstanding data security but also greatly simplifies troubleshooting operations. Simple, very well documented software and additional status LEDs permit rapid start-up.

Guaranteed data security

"Trigger-to-image reliability" is the name Teledyne DALSA gives to the function which continuously and automatically flags all the pixels, images and lines for transfer, counts these and checks them in each function block. This guarantees that once capture has been triggered, whether in hardware or software, all the data is also present in the image processing PC's main memory. If any pixels are transferred incorrectly then the error code and location are reported immediately.

The status LEDs are another source of assistance. One of the LEDs provides a visual indication that a camera is connected and transmitting data (green) or whether image losses are occurring (flashing red). The other LED indicates whether a trigger is being applied to the board (flashing green) or whether the board has been overtriggered (flashing red). This functionality very greatly simplifies the identification of error locations, particularly at start-up.

Various trigger modes

The PC2-CamLink provides a variety of trigger and control modes. In addition to the asynchronous image trigger and the pulse-width control modes for area scan cameras, a programmable-edge trigger input is provided which is an essential precondition for line scan camera applications. This trigger can be used to signal the start or end of the object that needs to be inspected. Thus, a start/stop trigger reduces the image capture so that it only includes the data that is required. Usually the feed information is determined via an incremental encoder which generates a defined number of pulses per rotation. Usually the feed information is determined by an incremental encoder which generates a defined number of pulses per rotation. To adapt these pulses to the required resolution, there is a counter (shaft encoder) directly behind the trigger input which reduces the value to the required scale.

The PC2-CamLink is the ideal frame grabber for all cost-sensitive tasks in which CameraLink base cameras are used.

  • For area scan and line scan cameras using the CameraLink 'Base' standard
  • Programmable sampling rates up to 66MHz per channel
  • Continuous data transfer at more than 80MB/s (3.3V and 5V compatible)
  • Programmable resolution up to an image size of 8k x 8k
  • 16 TTL I/O channels (8 IN/8 OUT) to monitor discrete machine states
  • Two independent trigger inputs (LVDS or opto-isolated)
  • RS-232 interface for direct camera control
  • 10-bit/8-bit scaling, 3x 8-bit LUTs
  • Hardware-implemented, self-loading scatter/gather DMA transfer
  • Real-time interrupt handling via Virtual Interrupt Extension (VIXN)
  • 2 shaft encoder
  • Interrupt support for various events
  • Status LEDs for simple start-up
  • Guaranteed reporting and location of data loss through "trigger to image-reliability"
  • Compatible with Common Vision Blox
  • If required, please order hardware and software documentation separately

Contact us

Technical Support

+44 1252 7800 60
+44 1252 7800 01
support@stemmer-imaging.co.uk

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+44 1252 7800 00
+44 1252 7800 01
sales@stemmer-imaging.co.uk

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