Regular Meter Mode - As with using a needle meter, tune the string so that the LED in the center of the meter lights up. The illuminated LED moves to the right if the tuning is low, and to the left if it is high. The process is very intuitive;
Strobe Meter Mode - Tune the string so that the movement of the meter's LED illumination stops. The illumination flows from left to right when the tuning is high, or the other way around if it is low;
Half Strobe Meter Mode - Tune the string so that the movement of the LED illumination of the meter stops and the center LED lights up. The right side of the LED meter flashes in strobe when the tuning is high; and the left side does the same when the tuning is low. When the tuning is correct, the center LED lights.