National Instruments NI 783 R Series User Manual page 66

CMOS
CMRR
common-mode
voltage
CompactPCI
D
D/A
DAC
DAQ
dB
DC
DGND
DIFF
DIO
DIO<i>
DMA
DNL
DO
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Complementary metal-oxide semiconductor.
Common-mode rejection ratio—A measure of an instrument's ability to
reject interference from a common-mode signal, usually expressed in
decibels (dB).
Any voltage present at the instrumentation amplifier inputs with respect to
amplifier ground.
Refers to the core specification defined by the PCI Industrial Computer
Manufacturer's Group (PICMG).
Digital-to-analog.
Digital-to-analog converter—An electronic device, often an integrated
circuit, that converts a digital number into a corresponding analog voltage
or current.
Data acquisition—A system that uses the computer to collect, receive,
and generate electrical signals.
Decibel—The unit for expressing a logarithmic measure of the ratio of
two signal levels: dB = 20log10 V1/V2, for signals in volts.
Direct current.
Digital ground signal.
Differential mode.
Digital input/output.
Digital input/output channel signal.
Direct memory access—A method by which data can be transferred
to/from computer memory from/to a device or memory on the bus while the
processor does something else. DMA is the fastest method of transferring
data to/from computer memory.
Differential nonlinearity—A measure in LSB of the worst-case deviation of
code widths from their ideal value of 1 LSB.
Digital output.
G-3 R Series Multifunction RIO User Manual
Glossary