Glossary
G-4
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counter/timer
a circuit that counts external pulses or clock pulses (timing)
crosstalk
an unwanted signal on one channel due to an input on a different channel
CTR
counter
current drive capability
the amount of current a digital or analog output channel is capable of
sourcing or sinking while still operating within voltage range specifications
current sinking
the ability of a DAQ device to dissipate current for analog or digital output
signals
current sourcing
the ability of a DAQ device to supply current for analog or digital output
signals
D
D/A
digital-to-analog
DAC
digital-to-analog converter—an electronic device, often an integrated
circuit, that converts a digital number into a corresponding analog voltage
or current
DAC0OUT
analog channel 0 output signal
DAC1OUT
analog channel 1 output signal
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 devices plugged into a computer,
and possibly generating control signals with D/A and/or DIO devices in the
same computer
dB
decibel—the unit for expressing a logarithmic measure of the ratio of two
signal levels: dB=20log10 V1/V2, for signals in volts
DC
direct current
DGND
digital ground signal
DIFF
differential mode
