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
35
Phase Shift Keying (PSK)
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- 16 Phase shift keying user interface
Steps to set phase shift keying modulation
(1)
After pressing the Mod function key, press the Modulation type soft key, use
the knob to select, the modulation type is PSK, press the Enter soft key. The
carrier waveform can be selected as needed. The following is a sine wave.
(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 Trig/Burst/Fsk In interface on the rear panel and skip to
step (5). If you select internal, continue with the following steps.
Note: When the source selects external, set the slope to “positive”, then output
the carrier phase when input logic low level, and output the modulation phase