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Glossary
© National Instruments Corporation
G-7
GPCTR1_UP_DOWN
general-purpose counter 1 up down signal
ground
an electrically neutral wire that has the same potential as the
surrounding earth; a common reference point for an electrical system
surrounding earth; a common reference point for an electrical system
H
h
hour
hex
hexadecimal
Hz
hertz
I
ICTR
8253 Programmable Interval Timer—applies to legacy DAQ products,
such as the 1200 series
such as the 1200 series
INL
integral nonlinearity—for an ADC, deviation of codes of the actual
transfer function from a straight line
transfer function from a straight line
interchannel delay
amount of time that passes between sampling consecutive channels.
The interchannel delay must be short enough to allow sampling of all
the channels in the channel list, within the scan interval. The greater the
interchannel delay, the more time the PGIA is allowed to settle before
the next channel is sampled. The interchannel delay is regulated by
CONVERT*.
The interchannel delay must be short enough to allow sampling of all
the channels in the channel list, within the scan interval. The greater the
interchannel delay, the more time the PGIA is allowed to settle before
the next channel is sampled. The interchannel delay is regulated by
CONVERT*.
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
communications channels, operator interface devices, and/or data
acquisition and control interfaces
I
OH
current, output high
I
OL
current, output low
I
OUT
current out
IRQ
interrupt request