National Instruments PCI-4452 User Manual

Page 96

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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

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