National Instruments Network Device DAQ S User Manual
Page 159
Glossary
G-6
ni.com
FPGA
Field-programmable gate array.
G
gain
The factor by which a signal is amplified, often expressed in dB. Gain as a
function of frequency is commonly referred to as the magnitude of the
frequency response function.
grounded signal
sources
Signal sources with voltage sources that are referenced to a system ground
such as the earth or building ground. Also called referenced signal sources.
H
h
Hour.
Hz
Hertz.
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.
INL
Integral nonlinearity—for an ADC, deviation of codes of the actual transfer
function from a straight line.
I
OH
Current, output high.
I
OL
Current, output low.
IRQ
Interrupt request.
L
LED
Light-emitting diode—a semiconductor light source.
LSB
Least significant bit.