National Instruments NI Vision NI 17xx 用户手册

TCP

Transmission Control Protocol. A set of standard protocols for 
communicating across a single network or interconnected set of networks. 
TCP is for high-reliability transmissions.

trigger

Any event that causes or starts some form of data capture.

VDC

Volts direct current.

VGA sensor

Video Graphics Array sensor. Image sensor that features a resolution of 
640

× 480 pixels.

VI

Virtual Instrument. A combination of hardware and/or software elements, 
typically used with a PC, that has the functionality of a classic stand-alone 
instrument.

working distance

The distance from the front of the camera lens to the object under 
inspection.