Configuring the internal baseband source
R&S
®
SMM100A
177
User Manual 1179.1341.02 ─ 05
4.6.5
Tags for waveforms, data and control lists
The R&S
SMM100A uses a simple tag-oriented format for externally or internally gen-
erated waveforms, data and control lists. Files with this format can be transmitted from
an external computer to the instrument and vice versa. These files are transmitted as a
binary data block, using SCPI command
[:SOURce<hw>]:BB:DM:DLISt:DATA
.
File can be transmitted via the GPIB interface of the instrument.
Tag general format
Tags are self-contained information units, enclosed in braces { }. Their general format
is
{Name: Data}
or
{Name-Length: Data}
. The colon separates the name part
and the data part. The colon can be followed by a space for the sake of legibility.
●
The
Name
identifies the tag. It is always expressed in capital letters.
●
The
Data
is tag-specific, and usually it is in ASCII plain text.
●
The
Length
specifies the number of bytes in a
WAVEFORM
tag,
DATA LIST
tag, or
EMPTYTAG
Length is an ASCII integer value, defining the number of bytes from the colon
:
to
the end brace
}
Rules
Each waveform file must begin with the
TYPE
tag. The sequence of the remaining tags
is arbitrary. For each tag, an indication shows whether it must be included in the file
concerned (mandatory) or may be included (optional).
Unknown tags are not analyzed by the R&S
SMM100A; they are left unchanged and
saved without an error message for a possible further read back.
R&S SMU waveforms can also be loaded on the instrument, where they are converted
internally into an R&S
SMM100A waveform.
In all examples of file contents listed in this section, the tags have been separated by
line breaks for better reading.
Tag description
This section describes the
mandatory
TYPE
tag
followed by description of all other
tags, grouped per file type and listed in an alphabetical order. Some tags are valid for
all three file types. If a tag is valid only for a single file type, e.g. only for a waveform,
this fact is indicated in the description.
Related step-by-step decriptions
See:
●
Chapter 4.6.4.6, "How to define periodically repeating traces"
Using the arbitrary waveform generator (ARB)
