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correlated DIO
counter/timer
D
D/A
DAC
DAQ
DAQ device
DAQ-STC
data acquisition
(DAQ)
dB
DC
device
DIO
A feature that allows you to clock digital I/O on the same clock as
analog I/O.
A circuit that counts external pulses or clock pulses (timing).
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.
See
data acquisition
A device that acquires or generates data and can contain multiple
channels and conversion devices. DAQ devices include plug-in
devices, PCMCIA cards, and DAQPad devices, which connect to a
computer USB or 1394 (FireWire
considered DAQ devices.
Data acquisition system timing controller—an application-specific
integrated circuit (ASIC) for the system timing requirements of a
general A/D and D/A system.
1. Acquiring and measuring analog or digital electrical signals from
sensors, transducers, and test probes or fixtures.
2. Generating analog or digital 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—although the term speaks of current, many different
types of DC measurements are made, including DC Voltage, DC
current, and DC power.
1. An instrument or controller you can access as a single entity that
controls or monitors real-world I/O points. A device often is
connected to a host computer through some type of communication
network.
2. See also
DAQ device
Digital input/output.
Analog Output Series User Manual
(DAQ).
®
) port. SCXI modules are
and
measurement
device.
© National Instruments | G-3
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