IEEE-488 Reference
4-31
:SYSTem:PRESet Long-form
:SYST:PRES Short-form
:SYSTem:PRES Long and short-form combination
Note that each command word must be in long-form or short-form, and not something in
between. For example, :SYSTe:PRESe is illegal and will generate an error. The command
will not be executed.
There are no short-form versions for common commands.
Short-form rules:
The following rules can be used to determine the short-form version of
any SCPI command:
A. If the length of the command word is four letters or less, there is no short-form version.
Examples:
:auto = :auto
:line = :line
B. The following rules apply to command words that exceed four letters:
a. If the fourth letter of the command word is a vowel, delete it and all the letters after
it. Examples:
:immediate = :imm
:timer = :tim
Rule exception – The short-form version of the following command uses only the
first two letters of the word:
:TCouple = :tc
b. If the fourth letter of the command word is a consonant, retain it but drop all the
letters after it. Examples:
:output = :outp
:asynchronous = :asyn
C. If there is a question mark (?; query) or a non-optional number included in the com-
mand word, it must be included in the short-form version. Examples:
:delay? = :del?
:layer2 = :lay2
D. As previously explained, command words or characters that are enclosed in brackets
([]) are optional and need not be included in the program message. Example:
:STATus:OPERation[:EVENt]?
The brackets ([]) indicate that :EVENt is optional. Thus, either of the following two
command program messages are valid:
:STATus:OPERation:EVENt? = :STATus:OPERation?
Notice that when using the optional word or character, the brackets ([]) are not included
in the program message.
The complete short-form version of the above command is as follows:
:stat:oper?