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Introduction to the SCPI Language

SCPI (Standard Commands for Programmable Instruments) is an ASCII-based

instrument command language designed for test and measurement

instruments. SCPI commands are based on a hierarchical structure, also known

as a tree system. In this system, associated commands are grouped together

under a common node or root, thus forming subsystems. A portion of the

SENSe subsystem is shown below to illustrate the tree system.

SENSe:

VOLTage:

DC:RANGe {<range>|MIN|MAX|DEF}

DC:RANGe? [MIN|MAX]

RESistance:

OCOMpensated {OFF|0|ON|1}

OCOMpensated?

SENSe is the root keyword of the command, VOLTage and RESistance are

second-level keywords, and DC and OCOMpensated are third-level keywords.

A colon ( : ) separates a command keyword from a lower-level keyword.

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