DigiTech HARDWIRE HT-2 Owner's Manual page 15

When Normal mode is selected, single or pairs of LEDs light indicating tuning
status. LEDs to the left of the center blue LED light if the note is flat and needs
to be tuned up. LEDs to the right of the center blue LED light if the note is
sharp and needs to be tuned down. When only the center blue LED is lit, the
note is in tune.
To select a display mode, do the following:
1. Press the Foot Switch to turn on the tuner. A dash appears in the note
display.
2. Press the MODE button. A O appears in the note display and the LED
above the current Mode (STROBE or NORMAL) lights. Press the
MODE button until the LED above the Mode you want to use is lit.
3. Once the selected Mode LED is lit, wait 3 seconds and the pedal
returns to normal operation. The last display mode selected is
automatically saved.
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