62 Keysight E1458A 96-Channel Digital I/O Module User GuideKeysight E1458A Command Reference SCPI Command ReferenceOptional Parameters. 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. For example, consider theDISPlay:MONitor:PORT? [] command. If you send thecommand without specifying a parameter, the command returns the number ofthe port last addressed. If you send the MIN parameter or the DEF parameter,the command returns 0. If you send the MAX parameter, the command returns11. Be sure to place a space between the command and the parameter.Keyword SubstitutionsSome commands indicate a keyword substitution by showing the substitution insquare brackets and lowercase letters. (It is important to note that this modifiesthe keyword and should not be confused with a parameter name.) For example,in the SCPI command MEASure:DIGital:DATAn[:type], the keyword [:type] shouldbe replaced by one these parameters:– :BYTE– :WORD– :LWORd or :LW32– :LW64– :LW96Linking CommandsLinking IEEE 488.2 Common Commands with SCPI Commands. Use a semicolon( ; ) between the commands. For example:*RST;DIG:CONT2 1 or DIG:CONT2:POL POS;*IDN?Linking Multiple SCPI Commands. Use both a semicolon ( ; )and a colon ( : )between the commands. For example:DIG:DATA2:POL NEG;:DIG:DATA2:BIT1 1SCPI Command ReferenceThe following sections describe the Standard Commands for ProgrammableInstruments (SCPI) commands for the Keysight E1458A Digital I/O Module.Commands are listed alphabetically by subsystem and within each subsystem.
