MP7505 Series User Manual
Figure 5-16: ASK user interface
How to set the parameters of ASK
(1) Press the Mod function key, then press the Type softkey, turn the rotary control
to select ASK, 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.
(5) If you select Internal, the modulating wave is set as a Square with 50% duty
cycle. Press the ASK Rate softkey to set the ASK rate. The rate at which the
output amplitude shifts between the carrier amplitude and the modulating
amplitude is determined by ASK rate (for internal source only). The range is 2
mHz – 1 MHz.
If you select External, use the Mod/FSK/Trig connector at the rear panel to
input the external modulating signal. Press the Slope softkey to switch between
Positive and Negative polarity of the modulating wave to control the output
amplitude. Set the slope to Positive, the generator would output the greater of
the carrier amplitude and modulating amplitude when the external input signal
is logic high level, and output the lower when the external input signal is logic
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