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Generating an am modulated waveform – Teledyne LeCroy WaveStation Waveform Generator Operators Manual User Manual

Page 41

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Operator’s Manual

922700-00 Rev A

35

B

Generating an AM Modulated Waveform

After selecting the Mod → AM (Amplitude Modulation) operator button,
the WaveStation shows the AM Operation menu and corresponding
Display and Detail dialogs.

Press adjacent Operation buttons and use the Digital Input Front Panel
Controls to make specific adjustment/selection parameter choices. For
more information on getting to this point, see Navigating Interfaces,
Adjusting Parameters, and Making Selections (on page 11).

Mod → AM Operation menu selections and parameters include AM Freq,
AM Depth, Type, Shape, and Source as follows:

AM Freq - This parameter sets the modulating waveform frequency. The
internal source frequency range is 2 MHz to 20 kHz.

AM Depth - This parameter sets the amplitude range.

NOTE: Amplitude range is also referred to as amplitude depth 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 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.
±6V corresponds to 100% of your current depth setting.

Type - Amplitude modulation.

Shape - Choose the waveform shape type (used as a carrier waveform)
for modulation. Sine, Square, Ramp, or Arb waveforms may be
modulated, while Pulse, Noise, and DC cannot.

Source - Select Internal or External. If External is selected, use the
Modulation In connector on the Back Panel.