Using The Tuner - Tascam DR-40 Reference Manual

10 – Tuning a Musical Instrument (Tuner)
TASCAM DR-40 has a built-in tuner. The unit receives a sound
from a musical instrument and allows you to tune it accurately
on the tuning meter shown in the display.

Using the tuner

Setting the tuner
1 Press the MENU button to open the MENU screen.
2 Use the + or − button to select OTHERS, and press
the ENTER/MARK or / button to open the OTHERS
submenu.
3 Use the + or − button to select TUNER, and press the
ENTER/MARK or / button.
TUNER screen appears.
The TUNER screen contains the CALIB option to set the
fundamental frequency of the A. Press the . or /
button to decrease or increase the fundamental frequency.
Setting range: 435Hz - 445Hz (in 1 Hz increments, default:
440Hz)
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TASCAM DR-40
NOTE
When the TUNER screen is open, press the ENTER/MARK
button to reverse the screen orientation.