National Instruments NI 781xR Manuel d'utilisateur télécharger pdf (Page 46)

Glossary

PCI 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 workstations.

PCI offers a theoretical maximum transfer rate of 132 MB/s.

port (1) A communications connection on a computer or a remote controller.

(2) A digital port, consisting of four or eight lines of digital input and/or

output.

ppm Parts per million.

pu Pull-up.

PWM Pulse-width modulation.

PXI PCI eXtensions for Instrumentation—An open specification that builds off

the CompactPCI specification by adding instrumentation-specific features.

RAM Random-access memory—The generic term for the read/write memory that

is used in computers. RAM allows bits and bytes to be written to it as well

as read from. Various types of RAM are DRAM, EDO RAM, SRAM, and

VRAM.

resolution The smallest signal increment that can be detected by a measurement

system. Resolution can be expressed in bits, in proportions, or in percent

of full scale. For example, a system has 12-bit resolution, one part in

4,096 resolution, and 0.0244% of full scale.

RIO Reconfigurable I/O.

rms Root mean square.

RSE Referenced single-ended mode—All measurements are made with respect

to a common reference measurement system or a ground. Also called a

grounded measurement system.

1 2 ... 41 42 43 44 45 46 47 48

Pas de commentaire

National Instruments NI 781xR Manuel d'utilisateur Page 46