National Instruments NI 6602 User Manual page 54

Glossary
MITE
motion encoders
N
NI-DAQ
NI-TIO
noise
O
OCXO
operating system
P
PCI
PFI
port
NI 660x User Manual
A custom ASIC designed by National Instruments that implements the
PCI bus interface. The MITE supports bus mastering for high speed data
transfers over the PCI bus.
Transducers that generate pulses to indicate the physical motion of a
device. The most common type of motion encoders are quadrature
encoders. Two-pulse encoders (also referred to as up/down encoders) are
another example.
NI driver software for DAQ hardware.
A custom ASIC developed by National Instruments that provides counter
and digital I/O functionality.
An undesirable electrical signal—noise comes from external sources such
as the AC power line, motors, generators, transformers, fluorescent lights,
soldering irons, CRT displays, computers, electrical storms, welders, radio
transmitters, and internal sources such as semiconductors, resistors, and
capacitors. Noise corrupts signals you are trying to send or receive.
oven-controlled crystal oscillator
Base-level software that controls a computer, runs programs, interacts with
users, and communicates with installed hardware or peripheral devices.
peripheral component interconnect—a high-performance expansion bus
architecture originally developed by Intel to replace ISA and EISA. It is
achieving widespread acceptance as a standard for PCs and work-stations;
it offers a theoretical maximum transfer rate of 132 Mbytes/s.
programmable function input
A communications connection on a computer or a remote controller.
A digital port, consisting of lines of digital input and/or output.
G-6 ni.com