RIGOL DG4000 Series - Manual (Page 114)

RIGOL Chapter 5 Modulated Waveform Output
DG4000 Series User’s Guide 5-14
FSK
When FSK (Frequency Shift Keying) modulation is selected, you can configure the
generator to “shift” its output frequency between two preset frequencies (“carrier
frequency” and “hop frequency”). The “shift” frequency (FSK Rate) is determined
by the internal signal level or signal level at the [Mod/FSK/Trig] connector at
the rear panel.
To Select FSK Modulation
Press Mod  Type  FSK to enable FSK function.
 When Mod is enabled, Sweep or Burst will be automatically disabled (if
enabled currently).
 After FSK is enabled, the instrument will generate FSK waveform with the
currently specified carrier and modulating waveforms.
To Select Carrier Waveform Shape
FSK carrier waveform could be Sine, Square, Ramp or arbitrary waveform (except
DC), and the default is Sine.
 Press the front panel key Sine, Square, Ramp or Arb  Select Wform
(or User, the pre-defined waveform can not be DC) to select desired carrier
waveform shape.
 Pulse, Noise and DC could not be used as carrier waveform.
To Set Carrier Frequency
Different carrier waveforms have different frequency ranges as shown in the table
below. For all the carrier waveforms, the default value is 1kHz.