Remote Control Basics
R&S
®
SMC100A
190
Operating Manual 1411.4060.32 ─ 04
Example:
Setting command:
HCOPy:PAGE:ORIentation LANDscape
Query:
HCOP:PAGE:ORI?
Response:
LAND
Character strings
Strings must always be entered in quotation marks (' or ").
Example:
HCOP:ITEM:LABel "Test1"
or
HCOP:ITEM:LABel 'Test1'
Block data
Block data is a format which is suitable for the transmission of large amounts of data. A
command using a block data parameter has the following structure:
Example:
FORMat:READings:DATA #45168xxxxxxxx
The ASCII character # introduces the data block. The next number indicates how many
of the following digits describe the length of the data block. In the example the 4 following
digits indicate the length to be 5168 bytes. The data bytes follow. During the transmission
of these data bytes all end or other control signs are ignored until all bytes are transmitted.
#0
specifies a data block of indefinite length. The use of the indefinite format requires a
NL^END
message to terminate the data block. This format is useful when the length of
the transmission is not known or if speed or other considerations prevent segmentation
of the data into blocks of definite length.
6.3.4 Overview of Syntax Elements
The following table provides an overview of the syntax elements:
:
The colon separates the mnemonics of a command. In a command line the separating semicolon
marks the uppermost command level.
;
The semicolon separates two commands of a command line. It does not alter the path.
,
The comma separates several parameters of a command.
?
The question mark forms a query.
*
The asterisk marks a common command.
' '
"
Quotation marks introduce a string and terminate it (both single and double quotation marks are
possible).
SCPI Command Structure
