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3 Operation Guides
3.1 Basic operation guides
This section describes the operation of different configuration functions of S1465 series vector
signal generator, including: modulation, sweep, etc. The configuration steps are detailed by
examples.
3.1.1 Digital modulation
The signal generator has the function of configuring real-time digital modulation signal output.
Example: The signal generated is real-time baseband signal with data source of PN9,
modulation format of QPSK and symbol rate of 4Msps.
Operation steps:
Step 1. Open Baseband Config Dialog:
Press the
【
Base
】
key or tap [Base] button on the touchscreen to open the Baseband Config
Dialog (Fig.3.1).
Step 2.Select the data source:
Select [Base Config] in the Baseband Config Dialog, rotate the RPG clockwise (or
counterclockwise) to move to Data Source selection combo box, and click the button to display the
available data source options; or tap Data Source on the touchscreen to display the available data
source options. The data source options available include: [PN Serial], [Fix 4], [Equal 10] and [File],
select [PN 9] option under the [PN Serial].
Step 3. Select the modulation type:
Select [Module Type] in the Baseband Config Dialog to display the current type of modulation,
select the modulation type QPSK, or tap [PSK/OQPSK] under [Modulation Type] on the touchscreen,
then tap [QPSK/OQPSK] under [PSK] option, and finally tap [QPSK] under [QPSK/OQPSK] option.
Step 4. Setting the symbol rate:
Select [Base Config] in the Baseband Config Dialog, rotate the knob clockwise (or
counterclockwise) to select the symbol rate input box and press the knob, or tap [Symbo Rate] on the
touchscreen to make the input box editable. Input 4 Msps and finish.
Step 5. Select the filter type:
Select [Filter] in the Baseband Config Dialog, rotate the RPG clockwise (or counterclockwise) to
move to Filter Select combo box, and press the knob to select “ Root Nyquist”; or tap
[Filter] on the touchscreen to display the available filter options and tap [Root Nyquist].
Step 6. Switch on the baseband:
After configuring baseband parameters, select [Base Config] in the Baseband Config Dialog,
rotate the RPG on front panel clockwise (or counterclockwise) to select Base Band switch, press the
knob to open the baseband, or tap [Base Band] on the touchscreen to activate the baseband output.
The modulation section in the main information screen displays
.