Subsystem Command Tree - Agilent Technologies 4349B Manual

Subsystem Command Tree

Top of the subsystem command tree is called the root command, or simply the root. To reach
the low-level commands, you must specify a particular path just like you would specify a DOS
le directory path. After Power ON or after an
root. The path settings are changed as follows:
Message Terminator
Colon (:)
Semicolon (;)
Common commands, such as
in the same way, regardless of the current path setting.
Figure 5-1 shows examples of how to use the colon and semicolon to navigate eciently
through the command tree.
In Figure 5-1, notice how proper use of the semicolon can save typing. Sending this message:
Is the same as sending these three messages:
5-4 GPIB Reference
A message terminator, such as
path to the root.
When a colon is placed between two command mnemonics, the colon
moves the current path down one level on the command tree. When
the colon is the rst character of a command, it speci es the following
command mnemonic is a root-level command.
A semicolon separates two commands in the same message without
changing the current path.
, are not part of any subsystem. The 4349B interprets them
Figure 5-1. Proper Use of the Colon and Semicolon
command, the current path is set to the
character, sets the current
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