Tascam GA-100CD - Manual (Page 20)

7 – Tuner, oscillator and metronome
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TASCAM GA-100CD
Use the built-in oscillator to output a sine wave through
the speakers. This wave can be set to any pitch in a
3-octave range between C3 and B5.
1 Press the OSC/CAL key. OSC appears on the LCD.
2 Press the and keys to set the generated pitch.
The default setting is A4. The selected pitch (C3–
B5) appears on the screen.
3 Press TIME/ESC to finish making the setting and
return to the time display.
NOTE
The oscillator’s standard tuning frequency depends
on the calibration setting. (See “Setting the standard
tuning frequency” on page 19.)
Using the tuner
Using the oscillator
Using the metronome
Follow these procedures to set the tempo and the
number of beats per measure for the GA-100CD’s built-
in metronome.
1 Press and hold
ª / MTRO to open the Metronome
menu. The metronome is still OFF.
2 Use the and keys to adjust the tempo in
a range of 40–220 bpm (beats per minute).
Adjusting the tempo turns the metronome ON.
3 Press ª / MTRO briefly. Use the and keys to
adjust the number of beats per measure between 2
and 6.
4 Press TIME/ESC when finished using the
metronome to return to the time display.
Use the SUB MASTER VOLUME knob to adjust the
level of the metronome.
1 Connect a guitar and press TUNER . TUNER appears
on the LCD along with the tuning meter. 6E
appears on the right side of the LCD, indicating
that it is set to tune the 6th string.
2 Use the and keys to choose the string (1E, 2B,
3G, 4D, 5A or 6E) you want to tune.
3 Tune the string until only the large dot at the
center of the meter lights.
4 When finished tuning, press TIME/ESC to return
to the time display.
Tuning in guitar mode
1 Connect a guitar and press TUNER . TUNER appears
on the LCD along with the tuning meter shown to
the right. Play the guitar string you want to tune.
The LCD will show the name of the closest note.
2 Tune the guitar roughly until the note that you
want to tune to appears on the LCD.
3 Tune until only the meter's large central dot
lights. If the pitch is too low (flat), the dots left of
the center light. If the pitch is too high (sharp), the
dots right of the center light. More dots light as
the string goes further out of tune.
4 When finished tuning, press TIME/ESC to return
to the time display.
Flat Sharp
In tune
Flat Sharp
In tune
Tuning in chromatic mode
The standard tuning frequency (A4) can be adjusted.
1 Press and hold
OSC/CAL to start calibration. CAL
appears on the LCD.
2 Press the and keys to adjust the standard
tuning frequency from 435 Hz to 445 Hz. Press
the key to restore the default setting of 440 Hz.
3 Press OSC/CAL or ESC to finish calibration and
return to time display.
Calibrating the tuning frequency
The GA-100CD has a built-in guitar tuner with 2 modes
–chromatic mode and guitar mode. In chromatic mode
(the default setting), the GA-100CD automatically
detects the input signal pitch. Guitar mode helps you tune strings to standard guitar tuning. (See “Changing
settings” on page 21 for details on setting the tuner
mode and sound output.)