DigiTech RP55 Owner's Manual page 13

Tuner
The Tuner in the RP55 lets you quickly tune or check the tuning of your guitar. Enter the
Tuner by pressing and holding both Footswitches simultaneously. The tu briefly displays
indicating that you are in Tuner mode. To begin tuning, play a note on your guitar (the
neck pickup usually works best). The display shows the note being played. The Effect
LEDs indicate whether the note is sharp or flat. The right 6 red LEDs indicate the note is
sharp and should be tuned down. The left 6 red LEDs indicate the note is flat and should
be tuned up. The center Green LED indicates the note is in tune. The output is muted in
Tuner mode.
The display shows the note played.
LEDs to the left LEDs to the right
of the EQ LED of the EQ LED
indicate the note is flat. indicate the note is sharp.
When the EQ LED is lit,
the note is in tune.
When the Tuner is enabled, you can change your tuning reference. The default factory
setting is A=440 Hz. (displayed as 40). Press the Value Buttons to select alternate dropped
tunings. Alternate tunings are A = Ab (displayed as Ab), A = G (displayed as G), and A = Gb
(displayed as Gb). The display window briefly flashes the selected tuning preference. Exit
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