Varying the RF Signal in List or Sweep Mode
R&S
®
SMA100B
141
User Manual 1178.3834.02 ─ 03
Example: Fast changing frequency and level settings in list mode
The following example shows you how to generate an amplitude modulated RF signal
based on list mode data.
General workflow
Since any change of the hardware settings or list entries can affect the RF signal char-
acteristics directly, we recommend that you proceed as follows:
1. Configure the modulation settings.
Activate the RF signal.
2. Wait until the hardware settings have settled.
3. Create a list file.
4. Configure the list processing mode.
5. Activate list mode.
To configure amplitude modulation and switch RF on
1. Press PRESET to start from an initial state.
2. Select "Modulation" > "Amplitude Modulation > On".
3. Select "Level" > "RF ON" to activate RF signal generation.
To create list mode data
1. Select "Sweep" > "List Mode".
2. In the "List Mode Data" tab, select "List Mode Data > New"
3. Enter the filename
ListMode_Test
for the data list and confirm with "Ok".
The instrument creates a file and stores it in the
/var/user/
directory.
4. Select "Edit List Mode Data".
5. Enter the first value pairs "Frequency > 2", "Power > 0" and "Dwell > 2".
6. Enter further frequency, power and dwell time values in the same way.
7. Select "Save" and close the dialog.
To configure the list processing mode and start signal generation
1. In the "General" tab, select "List Mode > Auto".
2. Select "Dwell Time Mode > From List".
3. Switch state to "On".
4. Select "General > State > On".
The instrument continuously generates an amplitude-modulated RF signal whose
frequency and level values change according to the dwell times, as defined in the
list.
How to Generate a Signal in List or Sweep Mode
