National Instruments PCI-1200 用户手册
Glossary
G-8
© National Instruments Corporation
V
V
volts
V
in
positive/negative input voltage
V
cm
common-mode noise
VDC
volts direct current
V
diff
differential input voltage
V
EXT
external voltage
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
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
V
IH
volts, input high
V
IL
volts, input low
V
m
measured voltage
Vrms
volts, root-mean-square
V
s
signal source
W
W
watts
WRT*
write signal