National Instruments Module SCXI-1125 - Manual (Page 97)

Glossary
SCXI-1125 User Manual G-10 ni.com
T
thermocouple A temperature sensor created by joining two dissimilar metals. The
junction produces a small voltage as a function of the temperature.
typ typical
U
UL Underwriters Laboratory
V
V volts
VDC volts direct current
VI virtual instrument—(1) a combination of hardware and/or software
elements, typically used with a PC, that has the functionality of a classic
stand-alone instrument (2) a LabVIEW software module (VI), which
consists of a front panel user interface and a block diagram program.
virtual channels
Channel names that can be defined outside of the application and used
without having to perform scaling operations. Virtual channels are called
custom channels in MAX 3.0 and later.
voltage excitation A source that supplies the voltage needed by a sensor for its proper
operation.
V
rms
volts, root mean square
W
working isolation A level of protection pertaining to a working voltage.
working voltage The highest voltage that should be applied to a product in normal use,
normally well under the breakdown voltage for safety margin.