Glossary
©NationalInstruments Corporation G-3 NI2590/2591 User Manual
F
flyback voltage the voltagespike generated the instant current stops fl owingthrough an
inductor
H
handshaking theuse of two trigger lines between two instruments, such as a switch and
aD MM, to synchronize their actions
Hz hertz—the number of scansr eado r updatesw ritten per second
I
in. inches
Interchangeable
VirtualInstrument
anadvanced architecture for instrument drivers that includes features such
assimulation and state caching
I/O input/output—the transfer of data to/from a computer system involving
communications channels, operatorinterface devices, and/or data
acquisitiona nd controli nterfaces
ISA Industry Standard Architecture
IVI See Interchangeable VirtualInstrument.
N
NI-Switch anIVI-based i nstrument driverthat supports the National Instrum ents line
ofswi tch modules
P
PXI PCI with extensions for instrumentation