Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 47Understanding SCPI Commands Programming the Enhanced MonitorParametersParameter Types. The following table contains explanations and examples ofparameter types you might see later in this chapter.Optional Parameter: Parameters shown within square brackets ([ ]) are optionalparameters. (Note that the brackets are not part of the command and are notsent to the instrument.) If you do not specify a value for an optional parameter,the instrument chooses a default value.Parameters separated by a vertical bar (|) indicate the only possible choices. Forexample:SYSTem:COMMunicate:SERial:CONTrol:RTS ON|OFFthe ON|OFF means that you can set RTS to either ON or OFF.Linking CommandsLinking IEEE 488.2 Common Commands with SCPI Commands. Use a semicolon(;) between the commands. For example:*RST;SYSTem:VERSion? or SYSTem:VERSion?;*RSTLinking Multiple SCPI Commands. Use both a semicolon (;)and a colon (:)between the commands. For example:SYST:COMM:SER:BAUD 19200;:SYST:COMM:SER:BITS 8Parameter Type Explanations and ExamplesEnumerated(abbreviated enum inthe Parameter tables)Accepts a specified set of words as the parameter.For example, the <display window> parameter of the :DISPlay:WINDowcommand accepts: MMAin, MPSupply, MTEMperature, MBLower, MDISplay,MSYStem . . .Numeric Accepts all commonly used decimal representations of numbers includingoptional signs, decimal points, and scientific notation.123, 123E2, -123, -1.23E2, .123, 1.23E-2, 1.23000E-01.Special cases include MIN, MAX, and DEF.int16 or uint32 int16 means a signed 16-bit integer value;uint32 means an unsigned 32-bit integer value.float floating point numberBoolean Represents a single binary condition that is either true or false.ON, OFF, 1, 0.
