User Manual

2400 Series SourceMeter
®
User’s Manual Remote Operations 14-9
Query commands
This type of command requests (queries) the presently programmed status. It is
identified by the question mark (?) at the end of the fundamental form of the com-
mand. Most commands have a query form:
:ARM:TIMer? Queries the timer interval.
Most commands that require a numeric parameter (<n>) can also use the
DEFault,
MINimum, and MAXimum parameters for the query form. These query forms are
used to determine the *RST default value and the upper and lower limits for the
fundamental command. Examples are:
:ARM:TIMer? DEFault Queries the *RST default value.
:ARM:TIMer? MINimum Queries the lowest allowable value.
:ARM:TIMer? MAXimum Queries the largest allowable value.
Case sensitivity
Common commands and SCPI commands are not case sensitive. You can use
upper or lower case and any case combination. Examples:
*RST = *rst
:DATA? = :data?
:SYSTem:PRESet = :system:preset
NOTE Using all upper case will result in slightly faster command response
times.
Long-form and short-form versions
A SCPI command word can be sent in its long-form or short-form version. The
command subsystem tables in Section 18 provide the long-form version. How-
ever, the short-form version is indicated by upper case characters. Examples:
:SYSTem:PRESet long-form
:SYST:PRES short-form
:SYSTem:PRES long-form and short-form combination
Note that each command word must be in long-form or short-form, and not some-
thing in between. For example, :SYSTe:PRESe is illegal and will generate an
error. The command will not be executed.