GW Instek GDM-8300 series User Manual - Manual (Page 107)

COMMAND OVERVIEW
107
Command types There are a number of different instrument
commands and queries. A command sends
instructions or data to the unit and a query
receives data or status information from the
unit.
Command types
Simple A single command
with/without a parameter
Example CONFigure:VOLTage:DC
Query A query is a simple or
compound command
followed by a question mark
(?). A parameter (data) is
returned.
Example CONFigure:RANGe?
Command Forms Commands and queries have two different
forms, long and short. The command syntax is
written with the short form of the command in
capitals and the remainder (long form) in lower
case.
The commands can be written either in capitals
or lower-case, just so long as the short or long
forms are complete. An incomplete command
will not be recognized.
Below are examples of correctly written
commands.
Long form
CONFigure:DIODe
CONFIGURE:DIODE
Configure:diode