User`s guide

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Agilent IO Libraries Suite
Agilent VISA User’s Guide
Agilent Technologies
Glossary
access board
The GPIB interface to which a particular device is connected.
Active Controller
See "Controller in Charge".
address
A string (or other language construct) that uniquely locates and
identifies a resource. VISA defines an ASCII-based grammar that
associates address strings with particular physical devices or
interfaces and VISA resources.
Agilent 488
An I/O library provided in Agilent IO Libraries Suite for
compatibility with existing test & measurement programs that were
developed using National Instruments’ NI-488 or other similar
libraries. Agilent 488 supports communication with GPIB devices
and interfaces, but does not support USB, LAN, RS-232, or VXI
communications.
alias
See VISA alias.
API
Application Programming Interface. The interface that a programmer
sees when creating an application. For example, the VISA API
consists of the sum of all of the operations, attributes, and events of
each of the VISA ResourceClasses.