The SCPI commands are organized in a tree structure. Each tree structure forms a functional system. The base of the tree is called the root. Each functional system can have subsystems of lower level. The final nodes are called leaves. The entire sequence from root to leaf makes up the command. For example, part of the "AFR:SYSTem" functional system looks as follows:
AFR:SYSTem
:STATe
:LOAD
The tree can contain subsystems and leaves with the same names if they belong to different branches, e.g. "OPEN" leaf is on the tips of different branches:
AFR:CALCulate :STEP :REFlect :OPEN |
AFR:CALCulate :STEP# :THRU :OPEN |
Rev.: 22.2.1