NF FRA5022, Инструкция по эксплуатации

Страница: 88 / 145

5.5 Command Explanation
FRA5022
5-10
5.5 Command Explanation
5.5.1 Summary of Terms
Summary of terms used are explained below.
5.5.1.1 Subsystem Commands
Commands are divided into groups depending on their function. Subsystem commands are
arranged in a hierarchy. The colon ( : ) is defined as the path separator.
5.5.1.2 Path Separator
The path separator ( : ) separates the current keyword from the keywords one level lower.
In a command string, each colon ( : ) indicates a displacement to the path one level below
the current path.
When the colon ( : ) is found at the beginning of a command string it means
“
to set the
current path to root
”
. It is possible to omit a heading colon ( : ).
: M E A S : D E L 9 9 9 . 9 9
(1) Set current path to root
(2) MEASure subsystem command (MEASure is a root command)
(3) MEASure subsystem attached DELay command
(4) A space is required between the header and the parameters
By using a semi-colon ( ; ) to separate a command string it is possible to access a
subsystem command as the same level without changing the current path.
5.5.1.3 Command Strings Simplification
This operation manual displays the syntax of commands by using alphabet letters in
upper or lower case to write commands (and a part of the parameters). The upper case
strings are the abbreviated (short) form. Omitting the lower case part or including the
whole string (long form) will be interpreted as the same command. It is not possible to use
a part of the lower case characters as the abbreviation.
Upper and lower case are used only as an expedient means to explicit the form that can be
shortened but the device makes no distinction whatsoever between the two. It is possible
to use both simultaneously.
Ex.) :DISPlay:COORdinates? → :display:coordinates? Acceptable (lower case)
:DISP:coor?
Acceptable
(mixed upper/lower case)
:DISPL:COOR?
Not Acceptable (wrong
intermediary abbreviated
form)
:DISP:COO?
Not Acceptable (omission
over-abbreviated)
↑
(1)
↑
(2)
↑
(3)
↑
(4)