Introduction to the SCPI Language
Standard Commands for Programmable Instruments (SCPI) is an ASCII- based instrument command
language designed for test and measurement instruments. Refer to Simplified Programming Overview
for basic techniques for programming the power supply over the remote interface.
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 SOURce subsystem is shown below to illustrate the tree system.
[SOURce:]
CURRent {<current>|MIN|MAX|UP|DOWN} CURRent? [MIN|MAX]
CURRent:
TRIGgered {<current>|MIN|MAX} TRIGgered? {MIN|MAX}
VOLTage {<voltage>|MIN|MAX|UP|DOWN} VOLTage? [MIN|MAX]
VOLTage:
TRIGgered {<voltage>|MIN|MAX} TRIGgered? {MIN|MAX}
SOURce is the root keyword of the command, CURRent and VOLTage are second-level keywords, and
TRIGgered is the third- level keyword. A colon (:) separates a command keyword from a lower- level
keyword.
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