Chapter 1
Introduction
NI PCIe-1427 User Manual
1-2
ni.com
triggering, pulse-train outputs, and isolated digital I/O are available with
the NI Camera Link I/O Extension Board. Refer to the
NI Camera Link I/O
Extension Board User Guide
for information about the NI Camera Link I/O
Extension Board.
For more advanced digital or analog system triggering or digital I/O lines,
you can use the NI 1427 and NI-IMAQ with National Instruments Data
Acquisition (DAQ) or Motion Control products.
Synchronizing several functions to a common trigger or timing event can
be a challenge with image acquisition devices. The NI 1427 uses the
Real-Time System Integration (RTSI) bus to synchronize multiple devices,
such as data acquisition and motion control devices. The RTSI bus uses the
National Instrument RTSI bus interface and ribbon cable to route additional
timing and trigger signals between the NI 1427 and up to four National
Instruments Vision, DAQ, or Motion Control devices. The RTSI bus can
also synchronize multiple image acquisition devices to perform
simultaneous captures.
Refer to the
Specifications
section of
Getting Started with the
NI PCIe-1427
for detailed specifications of the NI 1427.
Camera Link
This section provides a brief overview of the Camera Link standard. Refer
to the
Specifications of the Camera Link Interface Standard for Digital
Cameras and Frame Grabbers
manual for more detailed information about
Camera Link specifications. This manual is available on several Web sites,
including the Automated Imaging Association site at
www.machinevisiononline.org
.
Overview
Developed by a consortium of camera and image acquisition device
manufacturers, Camera Link is a standard for interfacing digital cameras
with image acquisition devices. Camera Link simplifies connectivity
between the image acquisition device and the camera by defining a single
standard connector for both. This standard ensures physical compatibility
of devices bearing the Camera Link logo.
The basis for the Camera Link standard is the National Semiconductor
Channel Link chipset, a data transmission method consisting of a
general-purpose transmitter/receiver pair. The Channel Link driver takes
28 bits of parallel digital data and a clock and serializes the stream to
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