5.Panel Operation
(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) Set QPSK rate:
Press the Rate softkey to set the QPSK rate. The rate at which the output
phase shifts between the carrier phase and the modulating phase is
determined by QPSK rate (for internal source). The range is 2 mHz –
100 kHz.
(5) Set the modulating phases:
Press the Phase1, Phase2 and Phase3 softkey to set the modulating
phases respectively. The range is 0° to 360°.
OSK (Oscillation Shift Keying)
Oscillation Shift Keying modulation is a modulation technique that the
generator to output a sine signal with intermittent oscillation. The
start-oscillation and stop-oscillation of the internal crystal oscillator are
controlled by the internal signal level of the instrument. When the internal
crystal oscillator starts to oscillate, the instrument starts to output the carrier
waveform and when the internal crystal stops oscillating, the output stops. The
OSK user interface is shown below.
Mod
Type
Load
Parameter 1
Parameter 2
Modulating wave
Carrier wave
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