Glossary
©NationalInstruments Corporation G-3 6023E/6024E/6025EUser Manual
bus thegroup of conductors that interconnect individual circuitry in a computer.
Typically,a busi s the expansion interfaceto whi ch I/O or other devicesare
connected.Examples of PCbuses are the ISA bus and PCI bus.
busmaster at ype of a plug-in board or controller with the ability to read and write
deviceson the computer bus
C
CCelsius
CH channel
channel pino rwire leadto which you apply, or from which you read, an analog or
digitalsignal. Analog signals can be single-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
amplifierto reject interference from a common-mode signal, usually
expressedindecibels(dB)
CONVERT* convertsignal
counter/timer acircuit that counts external pulses or clock pulses (timing)
crosstalk anunwanted signal on one channel due to an input on a different channel
CTR counter
currentdrive
capability
the amount of current a digital or analog output channel is capable of
sourcingor 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
convertsa digital number into a corresponding analog voltage or current
DAC0OUT analog channel 0 output signal
DAC1OUT analog channel 1 output signal