DigiTech RP155 Owner's Manual page 9

Display shows
note played
Top LEDs indicate
note is sharp
Green LED indicates
note is in tune
Bottom LEDs indicate
note is flat
In Tuner mode, you can change your tuning reference. The default factory setting is A=440 Hz
(displayed as 40). Rotating Knob 1 selects alternate and dropped tunings. Alternate tunings are
A=453Hz to A=427 Hz (displayed as 53 to 27). Dropped tunings are A=A flat (displayed as A∫),
A=G (displayed as G), and A=G flat (displayed as G∫). The display window will briefly flash the cur-
rently selected tuning preference.
Exit Tuner mode by pressing either Footswitch.
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