Glossary
NI 4050 User Manual G-4 www.ni.com
dielectric absorption a parasitic phenomenon related to capacitors that can cause unexpectedly
long settling times in circuits using capacitors with poor dielectric
absorption specifications
differential input an analog input consisting of two terminals, both of which are isolated from
computer ground, whose difference is measured
DMM digital multimeter
DNL differential nonlinearity—a measure in LSB of the worst-case deviation of
code widths from their ideal value of 1 LSB
double insulated a device that contains the necessary insulating structures to provide electric
shock protection without the requirement of a safety ground connection
drivers software that controls a specific hardware instrument
E
ECMR Effective Common Mode Rejection—a measure of an instrument’s ability
to reject interference from a common-mode signal. This includes both the
effects of normal mode rejection and common mode rejection.
EEPROM electrically erasable programmable read-only memory—ROM that can be
erased with an electrical signal and reprogrammed
EXT TRIG IN external trigger input signal
F
F farads
filtering a type of signal conditioning that allows you to filter unwanted signals from
the signal you are trying to measure
G
gain the factor by which a signal is amplified, sometimes expressed in decibels