Remote Control
Copyright © Itech Electronic Co., Ltd.
4
TRIG:COUNT 10
Question mark (?)
You can insert question marks into a command to query current values of most
parameters. For example, the following commands will trigger to set the count
as 10:
TRIG:COUN 10
Then, you may query count value by sending the following command:
TRIG:COUN?
You may also query the allowable minimum or maximum count as follows:
TRIG:COUN?MIN
TRIG:COUN?MAX
Comma (,)
If a command requires several parameters, then a comma must be used to
separate adjacent parameters.
Space
You must use blank characters, [TAB] or [Space] to separate parameters with
key words of commands.
Generic commands (*)
Execute functions like reset, self inspection and status operation. Generic
commands always start with a asterisk (*) and occupy 3 character sizes,
including one or more parameters. Key words of a command and the first
parameter are separated by a space. Semicolon (;) can separate several
commands as follows:
*RST; *CLS; *ESE 32; *OPC?
Command terminator
Command strings sent to the instrument must end with a <Newline> (<NL>)
character. IEEE-488 EOI (End or Identify) information can be used as <NL>
character to replace termination command string of <NL> character. It is
acceptable to place one <NL> after a <Enter>. Termination of command string
always resets current SCPI command path to root level.
NOTE
As for every SCPI message with one query sent to the instrument, the
instrument will use a <NL> or newline sign (EOI) to terminate response of
return. For example, if "DISP:TEXT?" is sent, <NL> will be placed after
the returned data string to terminate response. If an SCPI message
includes
several
queries
separated
by
semicolon
(such
as
"DISP?;DISP:TEXT?"), <NL> will terminate response returned after
response to the last query. In all cases, the program must read <NL> in
response before another command is sent to the instrument, otherwise
errors will be caused.
1.4 Data type
SCPI language defines several data types used for program message and
response messages.
⚫
Numerical parameter
⚫
Commands requiring numerical parameters support the notations of all
common decimal notations, including optional signs, decimal points,
scientific notation, etc. Special values of numerical parameters are also
