National Instruments DAQ 6527 - page 43

Glossary
6527 User Manual G-4 www.ni.com
O
optocoupler a device that transfers electrical signals by utilizing light waves to provide
coupling with electrical isolation between input and output
optical isolation the technique of using an optocoupler to transfer data without electrical
continuity, to eliminate high-potential differences and transients
P
PCI Peripheral Component Interconnect—a high-performance expansion bus
architecture originally developed by Intel to replace ISA and EISA.
port a digital port, consisting of four or eight lines of digital input and/or output
PXI PCI eXtensions for Instrumentation—an open specification that builds on
the CompactPCI specification by adding instrumentation-specific features
R
rms root mean square
S
S samples
s seconds
SCXI Signal Conditioning eXtensions for Instrumentation—the National
Instruments product line for conditioning low-level signals within an
external chassis near sensors so only high-level signals are sent to DAQ
boards in the noisy PC environment
signal conditioning the manipulation of signals to prepare them for digitizing