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Glossary
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National Instruments Corporation
G-5
SCXI-1502 User Manual
EXT CONV
External control signal to trigger A/D conversions.
EXT INT
External interrupt signal.
F
F
(1) Fahrenheit—a temperature measurement scale;
(2) farad—a measurement unit of capacitance.
FIFO
First-in first-out memory buffer—the first data stored is the first data sent
to the acceptor. FIFOs are often used on DAQ devices to temporarily store
incoming or outgoing data until that data can be retrieved or output.
filtering
A type of signal conditioning that allows you to remove unwanted
frequency components from the signal you are trying to measure.
FSR
Full-scale range. The FSR is the positive full-scale input voltage minus the
negative full-scale input voltage. For example, the FSR of the SCXI-1502
for a gain of 1 is +10 V – (–10 V) = 20 V.
ft
Feet.
G
G
Gain.
gain
The factor by which a signal is amplified, sometimes expressed in decibels.
GND
Ground.
H
Hz
Hertz—cycles per second of a periodic signal; the unit of measure for
frequency.