frequency modulation maximum deviation
Parameter fm is the frequency of the modulating signal, Î´max is the maximum deviation, and m is the corresponding modulation index. If a range of frequencies is used to modulate the carrier, the maximum modulating frequency and its corresponding modulation index are used.Commercial FM broadcasting uses a maximum deviation of 75 KHz and a maximum modulating frequency of 15 KHz.arameter fm is the frequency of the modulating signal, Î´max is the maximum deviation, and m is the corresponding modulation index. If a range of frequencies is used to modulate the carrier, the maximum modulating frequency and its corresponding modulation index are used.