Instructions
Table Of Contents
- 1.General Safety Requirement
- 2.Safety Terms and Symbols
- 3.Quick start
- 4.Panel Operation
- Channel Setting
- Waveform Setting
- Output the modulated waves
- Hexadecimal frequency shift keying (3FSK)
- Quaternary frequency shift keying (4FSK)
- Binary phase shift keying (BPSK)
- Oscillating keying (OSK)
- Output the sweep frequency (Sweep)
- Output the burst (Burst)
- Counter
- Utility function setting
- Edit the Arbitrary Wave (Edit)
- File system (Store)
- Save/recall instrument settings (Preset)
- Use build-in help (Help)
- 5.Communicate with PC
- 6.Troubleshooting
- 7.Specification
- 8.Appendix
4
.
Panel Operation
31
Phase Modulation (PM)
The output modulation waveform consists of a carrier wave and a modulated wave.
The carrier wave can be a sine wave, a square wave, a ramp wave, or an arbitrary
wave. In phase modulation, the phase of the carrier varies with the instantaneous
voltage of the modulation waveform. The phase modulation user interface is shown
below
Figure 4- 13: Phase modulation user interface
Steps to set phase modulation
(1)
After pressing the Mod function key, press the Modulation type soft key, use
the knob to select, the modulation type PM, and press the OK soft key.
(2)
Press to display the waveform and parameters of the current carrier. You
can change the parameters of the carrier. For details, please refer to Output Sine
Wave on page 10. Press or Mod to return to the modulation mode
interface.
(3)
Press Source to select the source. If External is selected, connect the external
signal source to the Ext Mod In interface on the rear panel and skip to step (5).
If you select Internal, continue with the following steps.
(4)
Press Modulation Waveform to select the modulation waveform. You can select
Sine, Square, Ramp, Noise, or Arb.