National Instruments NI 5911 User Manual
Page 37
Glossary
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F
filtering
a type of signal conditioning that allows you to filter unwanted signals from
the signal you are trying to measure
fs
full-scale—total voltage in the input range. A ±10 V input range is 20 V fs
G
gain
the factor by which a signal is amplified, sometimes expressed in decibels
H
hardware
the physical components of a computer system, such as the circuit boards,
plug-in boards, chassis, enclosures, peripherals, cables, and so on
harmonics
multiples of the fundamental frequency of a signal
Hz
hertz—per second, as in cycles per second or samples 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
in.
inches
inductance
the relationship of induced voltage to current
input bias current
the current that flows into the inputs of a circuit
input impedance
the measured resistance and capacitance between the input terminals of a
circuit
instrument driver
a set of high-level software functions that controls a specific plug-in DAQ
board. Instrument drivers are available in several forms, ranging from a
function callable language to a virtual instrument (VI) in LabVIEW.
interrupt
a computer signal indicating that the CPU should suspend its current task
to service a designated activity