To Output AM Modulated Waveform. Rigol DG1032Z, DG1062Z

RIGOL

To Output AM Modulated Waveform

For amplitude modulation (AM), the amplitude of the carrier waveform varies with the instantaneous voltage of the modulating waveform. This section introduces how to output AM modulated waveform from the [CH1] connector (the carrier is sine with 5kHz frequency and 5Vpp amplitude, the modulating waveform is sine with

200Hz frequency and the modulation depth is 80%).

1. To select output channel

Press CH1|CH2 to select CH1. Now the boarder of the channel status bar is displayed in yellow.

2. To set the carrier waveform shape, frequency and amplitude

1) Carrier Waveform Shape: press Sine to select sine as the carrier waveform.

2) Carrier Frequency: press Freq/Period to highlight “Freq”. At this point, use the numeric keyboard to input 5. Then, select kHz from the pop-up menu.

3) Carrier Amplitude: press Ampl/HiLevel to highlight “Ampl”, and then use the numeric keyboard to input 5. Then, select Vpp from the pop-up menu.

3. To select AM modulation

Press Mod  Type  AM to enable AM function.

 When Mod is enabled, Sweep or Burst will be disabled automatically (if enabled currently).

 Int and AM will be displayed in the bottom of the screen.

4. To set Modulating waveform frequency

Press AM Freq, and then use the numeric keyboard to input 200. Then, select

Hz from the pop-up menu.

5. To select modulating waveform

Press Shape to select Sine from the pop-up menu.

6. To set modulation depth

Press AM Depth, and then use the numeric keyboard to input 80. Then, select % from the pop-up menu.

7. To enable the output

Press Output1 to turn CH1 output on. At this point, the backlight goes on and the [CH1] connector outputs the AM modulated waveform based on the current settings.

8. To observe the output waveform

Connect the [CH1] connector to the oscilloscope using BNC cable. The waveform is as shown in the figure below.

DG1000Z Quick Guide 21