Remote Control
MTD200 MPEG Test Decoder User Manual
5–11
Character strings.
Strings must always be given in single or double quotes.
Example:
SYSTem:
LANGuage SCPI"
or
SYSTem:
LANGuage 'SCPI'
Block data.
Block data is a format suitable for the transmission of large data
volumes. A command with a block data parameter has the following structure:
Example:
HEADer:HEADer #45168xxxxxxxx
The ASCII character # denotes the beginning of the data block. The next number
specifies the number of subsequent digits defining the length of the data block.
In the example above, the four digits specify a length of 5168 bytes. The 5168
data bytes follow next. During the transmission of these data bytes, all termina-
tors and other control characters are ignored until all 5168 bytes have been
transmitted.
If block data are returned upon a query, they will always be sent in the above
format (<DEFINITE LENGTH ARBITRARY RESPONSE DATA>).
In the MPEG test decoder, block data are always transmitted as byte stream.
Special formats are either fixed to the respective command or described in the
data stream. Formatting of the commands is described together with the
commands (refer to Description of Commands on page 5–12).
NOTE
. The transmission of block data via the RS-232 interface is subject to
certain restrictions (refer to Appendix A: Interfaces).
The following list provides an overview of the syntax elements.
‘ : ’
The colon separates the keywords of a command. In a command line, the
colon following a semicolon identifies the highest command level.
‘ ; ’
The semicolon separates two commands in a command line.
‘ , ’
The comma separates several parameters of a command.
‘ ? ’
The question mark forms a query.
‘ * ’
The asterisk identifies a common command.
Overview of Syntax
Elements
Summary of Contents for MTD200
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