Query Commands - Keithley 2520 User Manual

10-12 Remote Operations

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 command. Most com-
mands have a query form:
:SOURce1:PULSe:DELay?
Most commands that require a numeric parameter (<n>) can also use the DEFault, MINi-
mum, and MAXimum parameters for the query form. These query forms are used to deter-
mine the *RST default value and the upper and lower limits for the fundamental
command. Examples are:
:SOURce1:PULSe:DELay? DEFault
:SOURce1:PULSe:DELay? MINimum
:SOURce1:PULSe:DELay? MAXimum
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
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
version is indicated by upper case characters. Examples:
:SYSTem:PRESet
:SYST:PRES
:SYSTem:PRES
Note that each command word must be in long-form or short-form, and not something in
between. For example, :SYSTe:PRESe is illegal and will generate an error. The command
will not be executed.
Using all upper case will result in slightly faster command response times.
Section 14 provide the long-form version. However, the short-form
long-form
short-form
long-form and short-form combination
Model 2520 User's Manual
Queries the pulse delay.
Queries the *RST default value.
Queries the lowest allowable value.
Queries the largest allowable value.