National Instruments SCXI -1125 用户手册
Glossary
G-4
ni.com
DAQ
Data acquisition—(1) collecting and measuring electrical signals from
sensors, transducers, and test probes or fixtures and inputting them to a
computer for processing; (2) collecting and measuring the same kinds of
electrical signals with A/D and/or DIO boards plugged into a computer, and
possibly generating control signals with D/A and/or DIO boards in the
same computer.
sensors, transducers, and test probes or fixtures and inputting them to a
computer for processing; (2) collecting and measuring the same kinds of
electrical signals with A/D and/or DIO boards plugged into a computer, and
possibly generating control signals with D/A and/or DIO boards in the
same computer.
DAQ device
A device that collects signals for data acquisition devices. Examples are
MIO and 1200 boards.
MIO and 1200 boards.
dB
decibel—The unit for expressing a logarithmic measure of the ratio of
two signal levels: dB = 20 log
two signal levels: dB = 20 log
10
(V1/V2), for signals in volts.
DC
direct current
device
A plug-in data acquisition board, module, card, or pad that can contain
multiple channels and conversion devices.
multiple channels and conversion devices.
differential input
An input circuit that actively responds to the difference between two
terminals, rather than the difference between one terminal and ground.
terminals, rather than the difference between one terminal and ground.
DIN
deutsche Industrie Norme
DIO
digital I/O
DMM
digital multimeter—A digital instrument capable of measuring several
different fundamental electrical characteristics, most often voltage,
resistance, and current.
different fundamental electrical characteristics, most often voltage,
resistance, and current.
E
EEPROM
electrically erasable programmable read-only memory—ROM that can be
erased with an electrical signal and reprogrammed.
erased with an electrical signal and reprogrammed.
EMC
electromechanical compliance
EMI
electromagnetic interference