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
shap.
(3) Set carrier wave parameters:
Press the wave shap 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 Mode to return to the modulation
mode interface.
(4) Modulating wave source:
4FSK uses internal modulation source, and the modulating wave is set as
a Square with 50% duty cycle.
(5) Set 4FSK rate:
Press the FSK Rate softkey to set the 4FSK rate. The rate at which the
output frequency shifts between the carrier frequency and the three hop
frequencies is determined by 4FSK rate (for internal source). The range is
2 mHz – 1 MHz.
(6) Set hop frequencies:
Press the HopFreq1, HopFreq2 and HopFreq3 softkey to set the three
hop frequencies.
BPSK (Binary Phase Shift Keying)
Binary Phase Shift Keying modulation is a modulation technique that shifts the
output signal phase between two phases: the carrier phase and modulating
phase. Carrier wave phase shifts to the modulating phase with the specified
BPSK rate, and then returns to the original phase. The BPSK user interface is
shown below.
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