National Instruments NI 5102 用户手册
Glossary
© National Instruments Corporation
G-7
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
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
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
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
erased with an electrical signal and reprogrammed
EISA
extended industry standard architecture
electrostatically
coupled
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
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
(usually by ultraviolet light exposure) and reprogrammed
ETS
equivalent time sampling