National Instruments PCI-4452 User Manual
Page 96

Glossary
PCI-4451/4452 User Manual
G-8
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National Instruments Corporation
filtering
a type of signal conditioning that allows you to attenuate unwanted portions
of the signal you are trying to measure
FIR
finite impulse response—a non recursive digital filter with linear phase
flash ADC
an ADC whose output code is determined in a single step by a bank of
comparators and encoding logic
floating signal sources
signal sources with voltage signals that are not connected to an absolute
reference or system ground. Also called nonreferenced signal sources.
Some common example of floating signal sources are batteries,
transformers, or thermocouples.
FREQ_OUT
frequency signal
ft
feet
G
gain
the factor by which a signal is amplified, sometimes expressed in decibels
gain accuracy
a measure of deviation of the gain of an amplifier from the ideal gain
GPCTR0_GATE
general-purpose counter timer 0 gate signal
GPCTR0_OUT
general-purpose counter timer 0 output signal
GPCTR0_SOURCE
general-purpose counter timer 0 clock source signal
GPCTR1_GATE
general-purpose counter timer 1 gate signal
GPCTR1_OUT
general-purpose counter timer 1 output signal
GPCTR1_SOURCE
general-purpose counter timer 1 clock source signal
grounded measurement
system
See SE.
User.book Page 8 Tuesday, April 14, 1998 10:20 AM