Linear fm block in simulink

how can I display the chirp waveform from the linear fm block in simulink? In the matlab workspace I would use the step function. I do not see an equivalent of the step function in simulink. I tried to create a generic block with step function but simulink complained. I am using matlab 2014b.

Thanks, Pierre

[ash]

Pierre

this question will never be answered, because there is not a single person in the world that has used it.

and mathworks will not share an all inclusive example whatso ever