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Glossary
© National Instruments Corporation G-3 6023E/6024E/6025E User Manual
bus thegroup of conductorsthat interconnect individual circuitryin a computer.
Typically, a bus is the expansion interface to which I/O or other devices are
connected. Examples of PC buses are the ISA bus and PCI bus.
bus master a type of a plug-in board or controller with the ability to read and write
devices on the computer bus
C
CCelsius
CH channel
channel pin or wire lead to which you apply, or from which you read, an analog or
digital signal. Analogsignals can besingle-ended or differential. For digital
signals, channels are grouped to form ports.
CMRR common-mode rejection ratio—a measure of the ability of a differential
amplifier to reject interference from a common-mode signal, usually
expressedindecibels(dB)
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
D
D/A digital-to-analog
DAC D/A 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