Qpsk Rate; Modulating Phase; 3Fsk Modulation; Select 3Fsk Modulation - Hantek HDG2000B Series User Manual

5.9.5 QPSK Rate

QPSK uses internal modulation source. Press Rate to set the frequency at which the output
phase shifts between "carrier phase" and "modulating phase".
 Use the numeric keyboard or direction keys and knob to input the desired frequency value.
 The frequency range is from 2mHz to 1MHz and the default is 100Hz.

5.9.6 Modulating Phase

Press Phase1 or Phase2/Phase3 to set the parameter.
 Use the numeric keyboard or direction keys and knob to input the desired amplitude value.
 The phase range is from 0º to 360º and the default is 180º .

5.10 3FSK Modulation

You can configure the instrument to "shift" its output frequency between three preset values using
3FSK modulation. The rate at which the output shifts between the three frequencies (called the
"carrier frequency" and two "hop frequencies") is determined by the internal signal level of the
instrument or the signal level on the front-panel [Sync/Mod/Trig] connector.

5.10.1 Select 3FSK Modulation

Press Mod->Type->3FSK to enable this function.
 When Mod is enabled, Sweep or Burst will be disabled automatically.
 After 3FSK is enabled, the instrument will generate 3FSK waveform with the currently specified
carrier and modulating waveforms. To avoid multiple waveform changes, enable modulation
after configuring the other modulation parameters.

5.10.2 Carrier Waveform Shape

3FSK carrier shape: Sine (default), Square, Ramp, Pulse, Arbitrary (except DC) or Harmonic
waveform.
 Press the front panel key Sine, Square, Ramp, Pulse, Arb -> Type or Harmonic to select a
desired carrier waveform shape.
 Noise and DC could not be used as carrier waveform.

5.10.3 Carrier Frequency

Choose carrier waveform shape, press Frequency/Period to highlight "Frequency", and then use
the numeric keyboard or direction keys and knob to input the desired frequency.
User Manual 49