5.Panel Operation
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) Select modulating wave source:
Press the Source softkey to select the modulating wave source.
If you select External, use the Sync/Ext Mod/Trig/FSK connector at the
rear panel to input the external modulating signal, then skip ahead to step
(7).
If you select Internal, continue with the following steps.
(5) Select modulating wave shape:
Press the Shape softkey, then press the Sine, Square, Ramp or Noise
softkey to select the modulating wave.
(6) Set modulating wave frequency:
Press the Frequency softkey to set the modulating wave frequency. The
range is 2 mHz – 100kHz (for internal source only).
(7) Set phase deviation:
Phase deviation is the deviation of the modulating wave phase relative to
the carrier wave phase. Press the Deviation softkey to set the PM phase
deviation. The range of phase deviation is from 0° to 180°.
PWM (Pulse Width Modulation)
The modulated waveform consists of the carrier wave and the modulating
wave. For PWM, the pulse width of the carrier Pulse wave varies with the
instantaneous voltage of the modulating wave. The PWM user interface is
shown below.
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