Remote Control Basics
R&S
®
NRPxxTWG
103
User Manual 1178.8371.02 ─ 04
Example:
Definition:
INITiate[:IMMediate]
Command:
INIT:IMM
is equivalent to
INIT
Parameters
Parameters must be separated from the header by a "white space". If several parame-
ters are specified in a command, they are separated by a comma.
For a description of the parameter types, refer to
Chapter 9.2.3, "SCPI Parameters"
Special characters
|
Parameters
A vertical stroke in parameter definitions indicates alternative possibilities in the sense of "or". The
effect of the command differs, depending on which parameter is used.
[
]
Mnemonics in square brackets are optional and can be inserted into the header or omitted.
Example
:
INITiate[:IMMediate]
INIT:IMM
is equivalent to
INIT
{
}
Parameters in curly brackets are optional and can be inserted once or several times, or omitted.
9.2.3
SCPI Parameters
Many commands are supplemented by a parameter or a list of parameters. The
parameters must be separated from the header by a "white space" (ASCII code 0 to 9,
11 to 32 decimal, e.g. blank). Allowed parameters are:
●
Numeric values
●
Special numeric values
●
Boolean parameters
●
Text
●
Character strings
●
Block data
The parameters required for each command and the allowed range of values are
specified in the command description.
Numeric values
Numeric values can be entered in any form, i.e. with sign, decimal point and exponent.
Values exceeding the resolution of the instrument are rounded up or down. The man-
tissa can comprise up to 255 characters, the exponent must lie inside the value range
-32000 to 32000. The exponent is introduced by an "E" or "e". Entry of the exponent
alone is not allowed.
SCPI Command Structure