National Instruments PCI-445 Series User Manual page 101

bus
C
C
CalDAC
CCIF
channel
circuit trigger
clip
clock
CMOS
CMRR
code width
common-mode range
common-mode signal
common-mode voltage
conditional retrieval
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the group of conductors that interconnect individual circuitry in a computer.
Typically, a bus is the expansion vehicle to which I/O or other devices are
connected. Examples of PC buses are the ISA and PCI bus.
Celsius
calibration DAC
See IMD.
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.
a condition for starting or stopping clocks
clipping occurs when an input signal exceeds the input range of the
amplifier
hardware component that controls timing for reading from or writing to
groups
complementary metal-oxide semiconductor
common-mode rejection ratio—a measure of an instrument's ability to
reject interference from a common-mode signal, usually expressed in
decibels (dB)
the smallest detectable change in an input voltage of a DAQ device
the input range over which a circuit can handle a common-mode signal
the mathematical average voltage, relative to the computer's ground, of the
signals from a differential input
any voltage present at both instrumentation amplifier inputs with respect to
amplifier ground
a method of triggering in which you simulate an analog trigger using
software. Also called software triggering.
G-3 PCI-4451/4452/4453/4454 User Manual
Glossary