SCPI parameter types
The SCPI language defines several different data formats to be used in program messages and response
messages.
Numeric parameters
Commands that require numeric parameters will accept all commonly used decimal representations of
numbers including optional signs, decimal points, and scientific notation. Special values for numeric
parameters like MINimum, MAXimum, and DEFault are also accepted.
You can also send engineering unit suffixes (V, A, or SEC) with numeric parameters. If only specific
numeric values are accepted, the power supply will automatically round the input numeric parameters.
The following command uses a numeric parameter:
CURR {<current>|MIN|MAX|UP|DOWN}
Discrete parameters
Discrete parameters are used to program settings that have a limited number of values such as BUS and
IMM. Query responses will always return the short form in all upper- case letters. The following
command uses discrete parameters:
TRIG:SOUR {BUS|IMM}
Boolean parameters
Boolean parameters represent a single binary condition that is either true or false. For a false condition,
the power supply will accept OFF or 0. For a true condition, the power supply will accept ON or 1. When
you query a boolean setting, the power supply will always return 0 or 1. The following command uses a
boolean parameter:
DISP {OFF|ON}
String parameters
String parameters can contain virtually any set of ASCII characters. A string must begin and end with
matching quotes; either with a single quote or with a double quote. You can include the quote delimiter
as part of the string by typing it twice without any characters in between. The following command uses a
string parameter:
DISP:TEXT <quoted string>
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