VOLTCRAFT FG-1302 - 4 FSK (4 Frequency Shift Keying)

5.Panel Operation
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(6) Set hop frequencies:
Press the HopFreq1 and HopFreq2 softkey to set the two hop
frequencies.
4FSK (4 Frequency Shift Keying)
4 Frequency Shift Keying modulation is a modulation technique that shifts the
output signal frequency among four preset frequencies: the carrier frequency
and three hop frequencies. The shift frequency (4FSK rate) is determined by
the internal signal level of the instrument. The 4FSK user interface is shown
below.
Mod
Type
Load
Parameter 1
Parameter 2
Carrier wave
Parameter 3
Parameter 4
Figure 5-23: 4FSK user interface
How to set the parameters of 4FSK
(1) Press the Mode function key, press the NextPage softkey twice more,
then press the 4FSK softkey to enter 4FSK user interface.
(2) Select carrier wave shape:
The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except
DC). Press , , , or to select a desired carrier wave
shape.
(3) Set carrier wave parameters:
Press the wave shape key of the selected carrier wave to display the
waveform and parameters of the carrier wave. You can change the
parameters of the carrier wave. Press the corresponding carrier waveform
key to return to the modulation mode interface or press the Mode key to
return to the modulation selection mode.
(4) Modulating wave source: