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Selecting Modulation Source
The generator can accept a modulating signal from an internal or external modulation source.
Press Mod → AM → Source to select “Internal” or “External” modulation source. The default is
“Internal”.
Internal Source
When internal AM modulation source is selected, press Shape to select Sine, Square, Triangle,
UpRamp, DnRamp, Noise or Arb as the modulating waveform.
• Square: 50% duty cycle
• Triangle: 50% symmetry
• UpRamp: 100% symmetry
• DnRamp: 0% symmetry
• Arb: the arbitrary waveform selected for the current channel
External Source
When external AM modulation source is selected, the generator accepts an external
modulating signal from the [Aux In/Out] connector at the rear panel. At this time, the
amplitude of the modulated waveform is controlled by the voltage applied to the connector.
For example, if the modulation depth is set to 100%, the output amplitude will be the maximum
when the modulating signal is +6V and the minimum when the modulating signal is -6V.
Do not connect more than ± 6 V into the Modulation In terminal. This
will damage the instrument and void its warranty.
Key Points:
The generator can use one channel as a modulating source for the other channel. The following
example takes the output signal of CH2 as the modulating waveform.
1. Connect the CH2 output terminal to [Aux In/Out] connector on the rear panel using a BNC
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