MP7505 Series User Manual
low level. The situation is the opposite when the slope is set to Negative.
(6) Set modulating amplitude:
Press the Amplitude softkey to set the modulating amplitude.
FSK (Frequency Shift Keying)
Frequency Shift Keying modulation is a modulation technique that shifts the output
signal frequency between two frequencies: the carrier frequency and hop frequency.
The shift frequency (FSK rate) is determined by the internal signal level or signal level
offered by the Mod/FSK/Trig connector at the rear panel. The FSK user interface is
shown below.
Figure 5-17: FSK user interface
How to set the parameters of FSK
(1) Press the Mod function key, then press the Type softkey, turn the rotary control
to select FSK, press the OK softkey.
(2) Select carrier wave shape:
The carrier wave can be Sine, Square, Ramp, or Arbitrary wave (except DC).
Press , , , or to select a desired carrier wave shap.
(3) Set carrier wave parameters:
Press the wave shap key of the selected carrier wave to display the waveform
and parameters of the carrier wave. You can change the parameters of the
carrier wave. Press Mod to return to the modulation mode interface.
(4) Select modulating wave source:
Press the Source softkey to select Internal or External as the modulating wave
source.
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