Analog FM tuners had a meter to help you get tuned accurately to the station's carrier frequency (Which is modulated to reflect the audio signal). Proper tuning minimizes distortion and noise. The meter should be adjusted for null: ie: centered.
Digital tuners don't have meters except for signal strength which is used for pointing a directional antenna. Tuning of a digital tuner is based on its crystal oscillator, which is more accurate than anyone could do twiddling a knob.
Digital tuners don't have meters except for signal strength which is used for pointing a directional antenna. Tuning of a digital tuner is based on its crystal oscillator, which is more accurate than anyone could do twiddling a knob.