Rohde & Schwarz SMBV100A, Руководство по эксплуатации

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Instrument Function
R&S
®
SMBV100A
409 Operating Manual 1176.8016.02 ─ 17
File Concept
To provide flexible configuration, the building of a composed multi segment waveform
file involves different stages; by completing of each of them, the R&S
SMBV creates
and stores a dedicated file. The following files are used:
●
Configuration list: is a dedicated file with details on how a multi segment wave-
form is made up from different waveforms, the level and the clock rate settings, and
the file name. The file extension is
*.inf_mswv
.
You can create any number of configurations as a basis for defining further multi
segment waveforms.
●
Output file: is the created output multi segment waveform file. The R&S SMBV
stores it under a user definable name; as with the standard waveforms, the used
file extension is
*.wv
. The instrument appends additional information to the header
of the composed waveform file, e.g. user comments.
●
Sequencing list: are files created in the "Multi Segment Waveform Sequencing"
dialog, i.e. when the ARB sequencer mode is used (see "The ARB Sequencer
Mode" on page 408).
The sequencing list file has an extension
*.wvs
and is automatically assigned to
but independent from the multi segment file. By default, both files have the same
name and are located in the same file directory. You can create more than one
sequencing list file per multi segment waveform file.
The sequencing list file carries information only about the segment number, the
corresponding waveform file names are retrieved from the assigned multi segment
waveform file, i.e. the same sequencing list file can be reused for different multi
segment waveform files with the same number of segments.
Changes and re-calculations of a multi segment waveform file cause a re-check
whether the assigned sequencing list files are still valid. A message is displayed to
inform about necessary corrections in the “play list”.
Impact of the Marker Settings
The general purpose of the marker signal is the triggering of the DUT (device under
test) and the synchronization with other measurement instruments.
For better flexibility, the instrument provides several possibilities to define marker sig-
nals:
●
Segment markers
Because the multiple segments are stand alone waveforms, it might be that they
already carry marker signals. Settings are provided to define how the instrument
should process these available marker signal, to ignore them or to use them in the
composed multi segment waveform.
●
Additional segment restart and sequence restart markers
Additional marker signal can be defined to restart the multi segment sequence or to
restart each of the multiple segments. A marker output configured and defined for
one of these purposes overwrites markers that use the same output connector and
that are defined in the individual waveforms.
Baseband Signal - Baseband Block