Rohde & Schwarz SMW200A - Page 486

Configuring the Signal in the RF Domain
R&S
®
SMW200A
471User Manual 1175.6632.02 ─ 16
Configuration and operation of list mode signals
The parameters configuring the RF signal are defined in a list (table) and stored in a
file.
Creating and handling lists
List files can be created in the following ways:
●
Internally
Use the build-in table editor with columns for the frequency-level values pairs and
the dwell time.
Define the values manually (row by row) or automatically, with linearly interpolated
values, calculated based on value range and step size.
(See Chapter 7.6.7, "List Editor", on page 486)
Lists are saved as files with user-definable filename and the predefined file exten-
sion *.lsw. To load a saved file, use the "File Manager".
(See Chapter 10.8, "Using the File Manager", on page 639)
Lists can be exported, too. For example, to exchange configuration between instru-
ments or to modify the file content with an external program and reload them again.
●
Externally
Create a list file as a CSV file with Microsoft Excel, with a Notepad or a similar tool
and save it with the predefined extension. Transfer the file to and load it into the
instrument.
Dwell time mode
You can choose whether you want to use different dwell times or a fixed value for all
steps in the list mode:
●
"From List"
This mode uses the values from the data table.
●
"Global"
This mode processes the list using a fixed time interval.
With "Global" dwell time you, however, still need to enter the dwell time values in
the data list.
The reason is that the instrument stores only completed rows and ignores incom-
plete entries. In addition, the data list must be filled completely, in case you want to
change the dwell time mode to "From List".
See Edit List Mode Data
List run mode
The R&S SMW generates signals from list files in two modes, "Live" and "Learned
(Frozen RF Settings)". These modes differ in terms of signal quality, signal processing
and switching time.
For details, see:
●
"Learn List Mode Data list processing mode" on page 473
●
"Live list processing mode" on page 474
Varying the RF Signal in List or Sweep Mode