User Manual

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does not work, "NULL\n" will be returned.
After one of the complete commands, if the following command has the same first-level
keyword or the same first-level and second-level keywords (keywords have 3 levels most),
the same keywords in the following command can be omit, the command can be written
as the rest parts.
E.g.
:func:sine:freq 1000 //Complete command
:ampl 2 //Omit first-level func and second-level sine
:squ:offset 1 //Omit first-level func
1.3. Symbol Description
Following symbols are usually used to assist to explain the parameters contained in a
command.
a) Braces { }
The options enclosed in a { } are parameters available in the command. Only one
option could be selected every time, and all the options are separated by “|”. For
example, {ON|OFF} indicateds that ON or OFF can be selected.
b) Triangle Brackets < >
The parameter enclosed in < > must be replaced by an effective value.
For example,
:FUNCtion:SINE:FREQuency <value>
wherein, <value> must be a numerical value, such as:
:FUNCtion:SINE:FREQuency 1000
1.4. Programmed Parameter Type
The commands contain 5 kinds of parameters, different parameters have different setting
methods.