Teledyne LeCroy WaveStation 3000 Operators Manual - Manual (Page 25)

Operator's Manual
Generating a DSB-AM Modulated Waveform
1. Generate a carrier wave of type Sine, Square, Ramp, or Arb(itrary).
2. Before outputting, press the Front Panel Mod function button. You should see "Mod" appear next to the car-
rier wave type on the Channel tab, and the modulation parameter menu and value list on the display.
3. Press the Type softkey, then press the DSB-AM softkey.
4. Set the following DSB-AM parameters:
l
Modulation Source - Internal or External. If External is selected, attach the modulation source to the
Modulation In connector on the Back Panel. You do not need to set any other parameters.
l
DSB Frequency - If using Internal source, set a DSB frequency of up to 50 KHz.
5. Press the appropriate channel Output button to begin outputting the waveform.
Generating a PWM Modulated Waveform
Pulse-Width Modulation is used exclusively with Pulse type waves.
1. Generate a carrier wave of type Pulse.
2. Before outputting, press the Front Panel Mod function button. You should see "Mod" appear next to the car-
rier wave type on the Channel tab, and the modulation parameter menu and value list on the display. The
modulation Type will be set to PWM.
3. Set the following PWM parameters:
l
Modulation Source - Internal or External. If External is selected, attach the modulation source to the
Modulation In connector on the Back Panel. You do not need to set any other parameters.
l
PWM Freq(uency) - the rate at which the pulse is modulated.
l
Width Dev(iation) -modulating pulse width.
4. Press the appropriate channel Output button to begin outputting the waveform.
922869 Rev B 19