Parameter Types; Boolean Parameters; Discrete Parameters; Numeric Parameters - Xantrex GPIB-M-HPD Operating Manual

SCPI Command Reference
Understanding SCPI Commands
Parameter
Several different data types are defined for use in program messages and response
messages.
Types

Boolean Parameters

Boolean parameters are single binary conditions such as 1 and 0, or ON and OFF.
The following is an example of a command that uses Boolean parameters:

Discrete Parameters

Discrete parameters are used when program settings have a limited number of
values. If you query a discrete parameter, the response will always be in the short
form with all uppercase letters. The following is an example of a command that uses
discrete parameters:

Numeric Parameters

Numeric parameters may include decimal points, +/- signs, and scientific notation.
Values such as MINimum and MAXimum are sometimes accepted as substitutes for
numbers. When DEFault is provided as a parameter, the machine selects the default
value automatically. You can may also use unit suffixes such as, V, A, or W where
appropriate. In cases where specific numeric values are accepted, the power unit will
round the input parameters. The following is an example of a command that uses
numeric parameters:

String Parameters

String parameters are used when a series of ASCII characters is required. Strings
must be enclosed within single or double quotations. The beginning and ending
quotation marks must be matching. The following is an example of a command that
uses string parameters:
102
SYST:COMM:GPIB:PONS {ON|OFF|1|0}
TRIG:SOUR {BUS|EXT|IMM|NONE}
VOLT:PROT {<voltage>|MAX|MIN}
CAL:STAT ON,"0000"
Operating Manual for Multichannel Functionality (GPIB-M)