Agilent Technologies E2094S Guide de l'utilisateur télécharger pdf (Page 138)

138 Agilent VISA User’s Guide

Glossary

programming alias

See VISA alias.

refresh

In Connection Expert, the action that invokes the discovery

mechanism for detecting interfaces and instruments connected to

your computer. The explorer view is then refreshed to show the

current, discovered state of your test system.

An address location that contains a value that represents the state of

hardware, or that can be written into to cause hardware to perform a

specified action or to enter a specified state.

resource (or resource instance)

In VISA, an implementation of a resource class (in object-oriented

terms, an instance of a resource class). For example, an instrument is

represented by a resource instance.

resource class

The definition of a particular resource type (a class in object-oriented

terms). For example, the VISA Instrument Control resource classes

define how to create a resource to control a particular capability of a

device.

resource descriptor

A string, such as a VISA resource descriptor, that specifies the I/O

address of a device.

SCPI

Standard Commands for Programmable Instrumentation: a standard

set of commands, defined by the SCPI Consortium, to control

programmable test and measurement devices in instrumentation

systems.

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Agilent Technologies E2094S Guide de l'utilisateur Page 138