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Glossary
NI 6115/6120 User Manual G-6 ni.com
GPCTR1_UP_DOWN general-purpose counter 1 up down signal
grounded signal
sources
signal sources with voltage signals that are referenced to a system ground,
such as the earth or a building ground; also called grounded signal
sources
H
h hour
Hz hertz—the number of scans read or updates written per second
I
I/O input/output—the transfer of data to/from a computer system involving
communications channels, operator interface devices, and/or data
acquisition and control interfaces
impedance resistance
in. inch or inches
INL integral nonlinearity—a measurement in least significant bits of the
worst-case deviation from the ideal A/D or D/A transfer characteristic of
the analog I/O circuitry
I
OH
current, output high
I
OL
current, output low
IRQ interrupt request
K
kHz kilohertz