National Instruments AT-MIO-16X User Manual
Page 296
Glossary
© National Instruments Corporation
G-13
AT-MIO-16X User Manual
interrupt level
the relative priority at which a device can interrupt
interval scanning
scanning method where there is a longer interval between scans than
there is between individual channels comprising a scan
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
I
OH
current, output high
I
OL
current, output low
IRQ
interrupt request
ISA
industry standard architecture
isolation
a type of signal conditioning in which you isolate the transducer signals
from the computer for safety purposes. This protects you and your
computer from large voltage spikes and makes sure the measurements
from the DAQ device are not affected by differences in ground
potentials.
isolation voltage
the voltage that an isolated circuit can normally withstand, usually
specified from input to input and/or from any input to the amplifier
output, or to the computer bus
isothermal
constructed to maintain constant temperature across area. Isothermal
construction of terminal blocks increases thermocouple measurement
accuracy.
K
k
kilo—the standard metric prefix for 1,000, or 10
3
, used with units of
measure such as volts, hertz, and meters
K
kilo—the prefix for 1,024, or 2
10
, used with B in quantifying data or
computer memory
kbytes/s
a unit for data transfer that means 1,000 or 10
3
bytes/s
kS
1,000 samples
Kword
1,024 words of memory