Instructions

5.Front Panel Operation
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amplitude with the specified ASK rate, and then returns to the original amplitude.
Term Explanation
ASK Rate:
The rate at which the output amplitude shifts between the carrier amplitude and the
modulating amplitude is called the ASK rate (Internal Modulation only).
PSK (Phase Shift Keying)
Phase Shift Keying modulation is a modulation technique that shifts the output signal
phase between two phases: the carrier phase and modulating phase.
Current Parameter
Carrier Frequency
Carrier Amplitude
Carrier Waveform
Modulating Waveform
Load
PSK Rate
Mod Type
Source
Modulating Phase
Figure 5-18: The User Interface of PSK
How to set the parameters of PSK
(1) Press Mod function button, then press F1 to select Mod.
(2) Press F1 to switch Mod Type to PSK. If the Carrier Waveform is not Sine, the
system will switch it to Sine automatically.
(3) Press button to display the waveform and parameters of the Carrier
Waveform. You can change the parameters, please refer to To Output Sine Signals on
page 12. Press button again to return to the Modulation mode interface.
(4) Press F5 to select Internal or External as PSK source.
(5) If you select Internal, press F3 to set the PSK Rate.
If you select External, press F3 to switch Slope between Positive and Negative.
The external source can be offered by the Ext Trig/Burst/Fsk In connector in the rear
panel. Set the Slope to Positive and the generator would output the carrier phase
when the external input signal is logic low level and output the modulating phase
when the external input signal is logic high level. The situation is the opposite when