National Instruments PCI-445 Series User Manual page 104

Glossary
DIO
DMA
DNL
down counter
drivers
DSA
dynamic range
E
EEPROM
event
external trigger
EXTSTROBE*
F
false triggering
PCI-4451/4452/4453/4454 User Manual
digital input/output
direct memory access—a method by which data can be transferred to/from
computer memory from/to a device or memory on the bus while the
processor does something else. DMA is the fastest method of transferring
data to/from computer memory.
differential nonlinearity—a measure in LSBs of the worst-case deviation of
code widths from their ideal value of 1 LSB
performing frequency division on an internal signal
software that controls a specific hardware device such as a DAQ device or
a GPIB interface device
dynamic signal acquisition
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
electrically erasable programmable read-only memory—ROM that can be
erased with an electrical signal and reprogrammed
the condition or state of an analog or digital signal
a voltage pulse from an external source that triggers an event such as A/D
conversion
external strobe signal
triggering that occurs at an unintended time
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