AT520/AT520SE/AT520L/AT520M User’s Guide
30
Example:
function:range:auto
on
function
Subsystem
Command
range Level
2
auto
Level 3
on
Parameter
The basic rules of the command tree are as follows.
Letter case (upper and lower) is ignored.
For example,
FUNCTION:RANGE = function:range
Spaces (_
used to indicate a space) must not be placed before and/or after the
colon (
:
).
For example,
function _:_range
function:range
The command can be completely spelled out or in abbreviated.(The rules for
command abbreviation are described later in this section)
For example,
function:range = func:rang
The command header should be followed by a question mark (?) to generate a
query for that command.
For example,
function:range?
The semicolon (;) can be used as a separator to execute multiple commands on
a single line. The multiple command rules are as follows.
Commands at the same level and in the same subsystem command group can
be separated by a semicolon (;) on a multiple command line.
For example,
beep:vol larg;bin good
To restart commands from the highest level, a semicolon (;) must be used as the
separator, and then a leading colon (:), which shows that the restarted command
is a command at the top of the command tree, must follow.
For example,
func:rang 5; : beep:bin good
The common commands can restart only after a semicolon on a multiple
command line.
For example,
func:rang 8;*IDN?;auto on
Command abbreviations:
Every command and character parameter has at least two forms, a short
form and a long form. In some cases they will be the same. The short form
is obtained using the following rules.
A) If the long form has four characters or less, the long form and short form
are the same.
B) If the long form has more than 4 characters:
(a) If the 4th character is a vowel, the short form is the first 3 characters of
the long form.
For example:
comparator abbr.
to
comp
current
abbr.
to
curr
range abbr.
to
rang
(b) If the 4th character is not a vowel, the short form is the first 4
characters.
For example:
resistance
abbr.
to
res
volume
abbr.
to
vol
If the long form mnemonic is defined as a phrase rather than a single word,
then the long form mnemonic is the first character of the first word(s) followed
by the entire last word. The above rules, when the long form mnemonic is a
