Glossary
NI5102 User Manual G-6 ni.com
DC coupled allowingthe transmission of both AC and DC signals
defaultsetting adefault parameter value recorded in the driver. In many cases, the default
inputof a controlis a certain value (often 0) that means use the current
default setting. For example,the default input for a parameter may be do
not changecurrent setting, and the default setting m ay be no AMUX-64T
boards.If you do change the value of such a parameter, the new value
becomesthe new setting. You can set default settings for some parameters
inthe configuration utility or manually using switches located on thedevice
device aplug-in DAQ device, card, or pad that can contain multiple channels and
conversiondevices. Plug-in boards, PCMCIA cards, and devices such as
the DAQPad-1200,which connects to your computer parallel port, are all
examplesof DAQ devices. SCXI modules are distinct from devices, with
the exceptionof th eS CXI-1200, which is a hybrid
DIFF differentialmode
differentialinput ananalog input consisting of two terminals, both of which are isolated from
computerground, whose difference is measured
differential
measurementsystem
away you can configure your device to read signals, in which you do not
need to connecteither input to a fixed reference, such as the earth or a
buildinggrou nd
digital port seeport
digital trigger aTTL level signal having two discrete levels—a high and a low level
DIN DeutscheIndustrie Norme
DIO digital input/output
DIP dual inline package
dithering theaddition of Gaussian noise to an analog input signal
DMA directmemory access—am ethod bywhich data can be transferred to/from
computer memory from/to a deviceo r memory on the buswhile the
processor does something else. DMA is the fastest method of transferring
data to/from computer memory
DNL differential nonlinearity—a measure in LSB of the worst-case deviation of
code widths from their ideal valueof 1 LSB