Rohde & Schwarz SMW200A - How to Create and Assign a Control List

Configuring the Internal Baseband Source
R&S
®
SMW200A
286User Manual 1175.6632.02 ─ 16
To generate a digitally modulated signal
► To generate a simple 3GPP digitally modulated signal, follow the instructions in
Chapter 2.3.2, "Generating a Digitally Modulated Signal", on page 69.
To apply an external clock signal
Internal and external clock synchronization
The correct synchronization of the internal clock synthesizer requires that the following
procedure is maintained.
1. Supply the instrument with the external clock, i.e. connect the external reference
clock source to the suitable instrument's connector.
2. If necessary, adjust the corresponding connector settings.
3. Adjust the "Symbol Rate".
The selected symbol rate must not deviate from the symbol rate of the external sig-
nal by more than 2% (see also data sheet).
4. Enable "Clock Source External"
4.6.4.1 How to Create and Assign a Control List
The R&S SMW provides the following ways to create a file containing control signals:
●
To use the dedicated Control and Marker Lists Editor and create a file in ASCII for-
mat and with extension *.dm_iqc, see "To create a control list in ASCII format
manually" on page 286
●
To use the tag-oriented format and create a control list file, see "To create a control
list using tag file format" on page 980
●
To use SCPI commands and create a file in binary format, see "To create a control
list in binary format" on page 980
To create a control list in ASCII format manually
Use the intuitive build in Control and Marker Lists Editor dialog:
1. To open the "Control Data Editor":
a) Select "Baseband > Custom Dig Mod > Data Source > Select Control List".
b) Select an existing file or select "New".
If the selected file is an existing one, the dialog shows the used settings.
If a new file has been created, the control list is empty.
2. Adjust the control signals as required.
a) In the graphic editor "Select Ramp to Edit", select the color-coded trace of the
required signal.
b) Tap at a position where a ramp is required. The number or ramps per marker is
unlimited.
Generating Custom Digital Modulated Signals