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help on simulink input

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i am encountering a simple problem that i want to remove the first input and i want to only connect slider as input.plzz help
SIMULINK FILE CAN EASILY BE OBTAINED FROM FOLLOWING MATHWORKS LINK
https://in.mathworks.com/help/supportpkg/rtlsdrradio/ug/spectral-analysis-with-rtl-sdr-radio.html;jsessionid=6a5e3e8b3cf8083d4d8a2587a119

Accepted Answer

Fangjun Jiang
Fangjun Jiang on 20 Oct 2020
You don't remove the Constant block. You "Connect" the Slider to the Constant block.
Double click the Slider, Drag the Constant block to the window, click "Connect".
set the simulation time to be "inf" and run simulation, move the slider and you will see the Constant block value changing.
If still not getting it, double click Slider, click "Help".
  2 Comments
Fangjun Jiang
Fangjun Jiang on 20 Oct 2020
Follow the Help document to connect the block.

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