NI-IMAQdx driver software gives you the ability to acquire images with IEEE 1394 and GigE Vision cameras。

IEEE 1394

　　IEEE 1394，别名火线（FireWire）接口，是由领导的开发联盟开发的一种高速传送接口，IEEE 1394是由苹果电脑所创，其他制造商也已获得授权生产。

GigE Vision

• 兼容NI Vision Builder AI、NI LabVIEW、NI LabWindows™/CVI、C/C++、Visual Basic
• 可从任何兼容GigE Vision的相机中采集图像
• 通过软件实现交互式相机配置

NI公司提供多种用于千兆以太网(Gigabit Ethernet)相机的硬件和软件产品，为工业检测或科学成像提供一种简单易行、价格低廉的图像采集方式。 GigE Vision使用标准且长度可达 100 m的电缆。 

　　The NI-IMAQ VI library, a series of VIs for using LabVIEW with National Instruments image acquisition devices, is included with the NI-IMAQ driver software.The NI-IMAQ VI library also includes several basic NI Vision VIs.

NI-IMAQ VIs give you the basic tools to perform the following functions:

• Load information about devices and cameras from a configuration file.
• Select a video channel.
• Adjust the acquisition parameters.
• Start or stop an acquisition.
• Transfer an image from device memory to an NI Vision image buffer.
• Monitor and control the device trigger lines

本质区别是： IMAQ应该是针对NI自己的相机的,imaqdx主要是针对非NI的usb、1394、gige vision相机的。