(a) Familiarise yourself with the function of the FM generator according to Illustration 169.
(b) How can you set the FM mid-frequency and frequency swing in the module "source signal" (without using a manual regulator)? In these experiments select a sinusoidal source signal.
(c) Vary the frequency swing and the mid-frequency according to Illustration 169 using a manual regulator. Extend the circuit.
(d) Examine the composition and the influence in the frequency domain of the frequency swing, the frequency of the source signal and the FM mid-frequency on the width of the FM spectrum.