User Manual

Chapter 4 Common Modulation Output RIGOL
User‟s Guide for DG5000
4-17
Phase Shift Keying (PSK)
When PSK (Phase Shift keying) modulation is selected, you can configure the
generator to make its output phase “shift” between two preset phase values (“carrier
phase” and “modulating phase”). The “shift” frequency (PSK Rate) is determined by
the signal level inside the instrument or from the rear panel [ExtTrig] connector at the
rear panel.
To Select PSK Modulation
Press Mod  Type  PSK to enable PSK function.
 When Mod is enabled, Sweep or Burst will be automatically disabled (if
enabled currently).
 After PSK is enabled, the instrument will generate PSK waveform with the
currently specified carrier and modulating waveform.
To Select Carrier Waveform Shape
PSK carrier waveform shape could be Sine, Square, Ramp or arbitrary waveform, and
the default is Sine.
 Press the front panel key Sine, Square, Ramp or (Arb  Select Wform) to
select desired carrier waveform shape.
 Pulse (basic waveform), Noise and DC could not be as carrier waveform.
To Set Carrier Phase
After carrier waveform shape is selected, press Start Phase to highlight it, use
numeric keyboard or knob to input the desired phase. The available phase ranges
from 0 º to 360 º, the default value is 0 º.
To Select Modulating Waveform Source
Press Mod  Source to select “Int” or “Ext” modulating waveform source.