Glossary
PCI-6023E/6024E/6025E User Manual
G-4
©
National Instruments Corporation
common-mode range
the input range over which a circuit can handle a common-mode signal
common-mode signal
the mathematical average voltage, relative to the computer’s ground, of the
signals from a differential input
conversion time
the time required, in an analog input or output system, from the moment a
channel is interrogated (such as with a read instruction) to the moment that
accurate data is available
CONVERT*
convert signal
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 board to dissipate current for analog or digital output
signals
current sourcing
the ability of a DAQ board 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 boards plugged into a computer, and
possibly generating control signals with D/A and/or DIO boards in the
same computer
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