Glossary
NI 5102 User Manual G-4 ni.com
channel pin or wire lead to which you apply or from which you read the analog or
digital signal. Analogsignals can besingle-ended ordifferential. For digital
signals, you group channels to form ports. Ports usually consist of either
four or eight digital channels
C
in
input capacitance
circuit trigger a condition for starting or stopping clocks
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
cold-junction
compensation
a method of compensating for inaccuracies in thermocouple circuits
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
common-mode
voltage
any voltage present at the instrumentation amplifier inputs with respect to
amplifier ground
compensation range the range of a parameter for which compensating adjustment can be made
conditional retrieval a method of triggering in which you simulate an analog trigger using
software. Also called software triggering
conversion device device that transforms a signal from one form to another. For example,
analog-to-digital converters (ADCs) for analog input, digital-to-analog
converters (DACs) for analog output, digital input or output ports, and
counter/timers are conversion devices
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
