Symbol Instruction
1. Colon :
Commands usually begin with a colon (:). A colon (:) is used to separate a
command keyword from a lower-level keyword. It shows the operation that a
multimeter will implement. RIGOL commands begin with (:).
2. Blank Space □
A Blank space is used to separate commands from the program data. If your
command does not need any program data, the blank space is not needed.
3. Interrogation ?
A query is formed by adding an interrogation (?) at the end of the commands.
The query commands usually include different data, and both of them usually
divided by a space □. But some commands don‘t include data.
4. Braces { }
When several elements separated by a vertical line (|) are enclosed by braces, { },
only one element may be selected. For example, {ON | OFF} indicates that only
ON or OFF may be selected, not both.
5. Triangle Brackets < >
A item enclosed in < > should be replaced by a numerical value or character
string.
6. Square brackets [ ]
Some key words of parameter or command tree are enclosed by square bracket
( [ ] ), which indicates that those parameters are optional or could be ignore. If no
parameter is set, the system will select a default. For example, CONFigure
[:VOLTage][:DC]□[{<range>|AUTO|MIN|MAX|DEF} [,{<resolution>|MIN|MAX
|DEF}]]. In this command, there are many square brackets, if you set the
parameter as default, the command could be abbreviate as CONFigure.
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