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4 Move down a level verify that “SINE” is selected.
For the modulating waveform, you can select a sine, square, triangle,
ramp, noise, or arbitrary waveform. For this example, you will modulate
the carrier with a sine waveform. Notice that the
AM annunciator flashes,
indicating that the displayed parameter is for
AM.
SINE
Enter 5 Save the change and turn off the menu.
The modulating waveform is now a sine waveform.
ENTERED
Shift Freq 6 Set the modulating frequency to 200 Hz.
Notice that the
AM annunciator flashes, indicating that the displayed
frequency is the modulating frequency. Also notice that the modulating
frequency is displayed with fewer digits than the carrier frequency.
MOD 200.0 Hz
This message appears on the display for approximately 10 seconds.
Repeat this step as needed.
Shift Level 7 Set the modulation depth to 80%.
Notice that the
AM annunciator flashes, indicating that the displayed
percentage is the
AM depth (also called percent modulation).
080 % DEPTH
This message appears on the display for approximately 10 seconds.
Repeat this step as needed.
At this point, the function generator outputs the
AM waveform with the
specified modulation parameters.
Chapter 3 Front-Panel Menu Operation
To output a modulated waveform
46
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