WaveStation 3000 Function and Arbitrary Waveform Generator
Generating Modulated Waveforms
Sine, Square, Ramp, Pulse and Arb(itrary) waveforms all may be modulated using WaveStation. You can apply
Amplitude Modulation
(AM),
Frequency Modulation
(FM),
Amplitude Shift Keying Modulation
(ASK),
Frequency
Shift Keying Modulation
(FSK),
Phase Modulation
(PM),
Pulse-Width Modulation
(PWM), or
Double-Side Band
Amplitude Modulation
(DSB-AM) depending on the type of carrier wave used.
Noise and DC waveforms cannot be modulated.
Also see:
Adjusting Parameters
Navigating Menus and Making Selections
Understanding the Display
Generating an 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
carrier 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
AM
softkey.
4. Set the following 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
AM Freq
- modulating waveform frequency. The internal source frequency range is 2 MHz to 20
kHz.
l
AM Depth
- also referred to as Amplitude Range or percentage modulation. It's a percentage value
that varies from 1 to 120% . When set to 0%, the output amplitude is approximately half of the user
set amplitude value. When set to 100%, the output amplitude matches the amplitude set. When
using an external source, the AM depth is controlled by the voltage level of the connector attached
to
Modulation In
on the Back Panel. ±10 V corresponds to 100% of your current depth setting.
5. Press the appropriate channel
Output
button to begin outputting the waveform.
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