Agilent 33120A User's Guide

Chapter 4 Remote Interface ReferenceAn Introduction to the SCPI LanguageQuerying Parameter SettingsYou can query the current value of most parameters by adding aquestion mark ( ? ) to the command. For example, the followingcommand sets the output frequency to 5 kHz:"FREQ 5000"You can query the frequency value by executing:"FREQ?"You can also query the minimum or maximum frequency allowed withthe present function as follows:"FREQ? MIN""FREQ? MAX"SCPI Command TerminatorsA command string sent to the function generator must terminate witha character. The IEEE-488 EOI (end-or-identify) message isinterpreted as a character and can be used to terminate acommand string in place of a character. A followed by a is also accepted. Command string terminationwill always reset the current SCPI command path to the root level.IEEE-488.2 Common CommandsThe IEEE-488.2 standard defines a set of common commands thatperform functions like reset, self-test, and status operations. Commoncommands always begin with an asterisk ( * ), are four to five charactersin length, and may include one or more parameters. The commandkeyword is separated from the first parameter by a blank space. Use asemicolon ( ; ) to separate multiple commands as shown below:"*RST; *CLS; *ESE 32; *OPC?"214