Communications Blockset

Running the Simulation

When you run the simulation, you will see signals appear in the three Scope windows, as shown below.

The control signal, which the Voltage-Controlled Oscillator block uses to maintain the frequency of the synthesized signal, initially fluctuates for about 10 microseconds, but then stabilizes to a constant value of 7/4. This occurs when the model reaches a steady state (that is, when the frequency of the synthesized signal is close to 100 MHz). Similarly, the synthesized signal oscillates back and forth at first, but then stabilizes to a square pulse of frequency 100 MHz. The reference signal is a square pulse of frequency 30 MHz.

Variables in the Model

Blocks in the Model