Glossary
6023E/6024E/6025EUser Manual G-8 ni.com
N
NI-DAQ National Inst ruments driver software for DAQ hardware
noise an undesirable electrical signal—Noise comes from external sources such
asthe AC power line, motors, generators, transformers, fluorescent lights,
solderingirons, CRT displays, computers, electrical storms, welders, radio
transmitters, and internal sources such as semiconductors, resistors, and
capacitors.N oise corrupts signals you are trying to send or receive.
NRSE nonreferenced single-ended mode—all measurements are made with
respectto a common measurement system reference, but the voltage at this
reference can varywith respect to the measurement system ground
O
OUT output pin—a counter output pin where the counter can generate various
TTLpulse waveforms
P
PCI Peripheral Component Interconnect—a high-performance expansion bus
architecture originallydeveloped by Intel to replace ISA and EISA. It is
achievingwidespread acceptance as a standard for PCs and work-stations;
it offersa theoretical maximum transfer rate of 1 32 Mbytes/s.
PFI programmable function input
PFI0/TRIG1 PFI0/trigger 1
PFI1/TRIG2 PFI1/trigger 2
PFI2/CONVERT* PFI2/convert
PFI3/GPCTR1_
SOURCE
PFI3/general purpose counter 1 source
PFI4/GPCTR1_GATE PFI4/generalpurpose counter 1 gate
PFI5/UPDATE* PFI5/update
PFI6/WFTRIG PFI6/waveformtrigger