How to use a Spectrum scope in Matlab Simulink

Hello I am learning the matlab and I want to plot the frequency spectrum of a simple sine wave signal in simulink. I am using the spectrum scope but i could not see any graph turning up what is the problem?? In what way should I use to get it worked...

Can any one please help

Thanks in advance

Answer 1

[Andreas Goser]

My suggestion is you open an example model (AKA demo) and see how the block works and what may be different in what you tried. Open

lmsadtde

This has a "Spectrum Analyzer" block (so it is called in my R2013a installation. You may want to switch the follwing settings in order to compare the demo and your model:

Menu Display -> Signals & Ports -> Port Data Types

Menu Display -> Signals & Ports -> Signal Dimensions