National Instruments NI 447 Series, Руководство пользователя

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Glossary
© National Instruments Corporation G-3 NI 447X User Manual
C
C Celsius
CCIF See IMD .
channel pin or wire lead to which you apply or from which you read the analog or
digital signal. Analog signals can be single-ended or differential. For digital
signals, you group channels to form ports. Ports usually consist of either
four or eight digital channels.
clip clipping occurs when an input signal exceeds the input range of the
amplifier
clock hardware component that controls timing for reading from or writing to
groups
CMOS complementary metal-oxide semiconductor
CMRR common-mode rejection ratio—a measure of an instrument’s ability to
reject interference from a common-mode signal, usually expressed in
decibels (dB)
code width the smallest detectable change in an input voltage of a DAQ device
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
conditional retrieval a method of triggering in which you simulate an analog trigger using
software. Also called software triggering.
counter/timer a circuit that counts external pulses or clock pulses (timing)
coupling the manner in which a signal is connected from one location to another
crosstalk an unwanted signal on one channel due to an input on a different channel
current sourcing the ability of a DAQ device to supply current for analog or digital output
signals