Glossary
© National Instruments Corporation G-7 NI 5102 User Manual
DOS disk operating system
down counter performing frequency division on an internal signal
DRAM dynamic RAM
drivers software that controls a specific hardware device such as a DAQ device or
a GPIB interface board
DSO digital storage oscilloscope
dual-access memory memory that can be sequentially accessed by more than one controller or
processor but not simultaneously accessed. Also known as shared memory
dynamic range the ratio of the largest signal level a circuit can handle to the smallest signal
level it can handle (usually taken to be the noise level), normally expressed
in decibels
E
EEPROM electrically erasable programmable read-only memory—ROM that can be
erased with an electrical signal and reprogrammed
EISA extended industry standard architecture
electrostatically
coupled
propagating a signal by means of a varying electric field
EMC electromechanical compliance
encoder a device that converts linear or rotary displacement into digital or pulse
signals. The most popular type of encoder is the optical encoder, which
uses a rotating disk with alternating opaque areas, a light source, and
a photodetector
End of Acquisition end of acquisition signal
EPROM erasable programmable read-only memory—ROM that can be erased
(usually by ultraviolet light exposure) and reprogrammed
ETS equivalent time sampling
