National Instruments IMAQ PCI-1407 User Manual page 44

Glossary
default setting
display memory
DLL
DMA
DRAM
drivers
dynamic range
E
EEPROM
external trigger
F
field
IMAQ PCI/PXI-1407 User Manual
A default parameter value recorded in the driver; in many cases, the default
input of a control is a certain value (often 0) that means use the current
default setting.
Dynamic link library. A software module in Microsoft Windows containing
executable code and data that can be called or used by Windows
applications or other DLLs; functions and data in a DLL are loaded and
linked at run time when they are referenced by a Windows application or
other DLLs.
Direct memory access. A method by which data can be transferred to and
from computer memory from and 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.
Dynamic RAM.
Software that controls a specific hardware device, such as an image
acquisition board.
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.
A voltage pulse from an external source that triggers an event such as
A/D conversion.
For an interlaced video signal, a field is half the number of horizontal
lines needed to represent a frame of video. The first field of a frame
contains all the odd-numbered lines, the second field contains all of the
even-numbered lines.
G-4 ni.com