National Instruments BNC -2140 User Manual
Page 26
Glossary
G-2
ni.com
B
BNC
a type of coaxial signal connector
C
C
Celsius
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
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
coupling
the manner in which a signal is connected from one location to another
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
current excitation
a source that supplies the current needed by a sensor for its proper operation
D
DAC
digital-to-analog 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
DC
direct current
DC coupled
allowing the transmission of both AC and DC signals
DGND
digital ground signal
DIFF
differential mode