User`s guide

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.