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Parts of the Sledgehammer Custom 100
Note name indicator
Left
shuttle light
Left shuttle switch
Battery holder (Rear)
Installing the battery
Make sure to turn the power off before you
install or replace the batt ery.
When it is time to replace the batt ery, the
note name indicator will blink. Immediately
replace the batt ery with a new one.
1. Open the batt ery compartment cover on
the rear of the tuner in the direction of
the arrow.
2. Insert the batt ery, making sure to observe
the correct polarity, and then close the
cover.
Tuning procedure
1. Turn the left shutt le switch upward. Each time you turn the shutt le switch,
the Sledgehammer Custom 100 will be turned on or off .
If the power is left on for approximately 3 minutes without any user input,
it will turn off automatically.
2. If necessary, change the meter mode and calibration (reference pitch).
3. Play a single note on your instrument.
The note name closest to the detected pitch appears in the note name indicator.
Tune your instrument to the correct pitch so that the desired note name
appears on the display.
4. Tune the instrument by playing a single note and checking the meter.
The tuning indications diff er depending on the selected meter mode sett ing.
Even if the pitch is within the range of detection, it may not be possible to detect the
pitch of an instrumental sound that contains large numbers of overtones or a sound
that has a rapid decay.
The meter may respond to vibrations it picks up from the environment; however,
this will not aff ect tuning of the instrument.
Setting the meter mode (*M)
Each time you turn the left shutt le switch downward, the meter mode changes.
A number indicating the meter mode appears in the note name indicator for
a few seconds.
1 (Regular) → 2 (Strobe) → 3 (Half strobe) → 1 (Regular) ...
1: Regular meter
Tune your instrument so that the center LED of the meter display is lit up.
The LED illumination will move from the center toward the right if the note
is sharp, or from the center toward the left if the note is fl at.
The pitch is flat.
In tune.
2: Strobe meter
Tune your instrument so that the illumination stops fl owing in the meter display.
Since the strobe meter has higher precision, it allows you to tune with greater
accuracy. The illumination will fl ow from left to right if the note is sharp, or
from right to left if the note is fl at.
In tune.
The pitch is flat.
3: Half-strobe meter
Tune your instrument so that the stream stops and only the center LED is lit up.
Meter display
shuttle light
Right shuttle switch
Tuning
The pitch is sharp.
The pitch is sharp.
The right side of the meter display will strobe if the note is sharp, and the
left side of the meter display will strobe if the note is fl at. When the pitch is
correct, only the center LED will light up.
Right
The pitch is flat.
Calibration (reference pitch) settings (*M)
Each time you turn the right shutt le switch upward (or downward), the
calibration value (reference pitch) increases (or decreases) in 1 Hz steps. The
last digit of the sett ing appears in the note name indicator for a few seconds.
6 (436Hz)...
The sett ing range is between 436 and 445 Hz.
Attaching to the instrument and range of motion
The Sledgehammer Custom 100 tunes by picking up the vibrations of the
instrument. Therefore, be sure to att ach the Sledgehammer Custom 100 to
the headstock of your instrument in order to tune it. In addition, the Sledge-
hammer Custom 100 can be freely moved so that the display is easy to read.
The Sledgehammer Custom 100 may be damaged if you apply excessive force
within its range of motion, or att empt to move it beyond its intended range of
motion.
20°
20°
Please carefully att ach the Sledgehammer Custom 100 to your instrument. Leaving
the Sledgehammer Custom 100 att ached for a long time may damage or mark the
instrument's surface.
Depending on various factors such as age-related change or the surface fi nish,
there is a possibility that your instrument may be damaged by att aching this
product.
As a default, the shutt le lights are set to light up when no note is inputt ed for
tuning and to go off while tuning.
If you want the shutt le lights to remain off , hold the left shutt le switch turned
upward for three seconds when you turn on the tuner. After the shutt le lights
blink, they will go off .
Repeat the procedure to return the shutt le lights to the sett ing where they
light up when no note is inputt ed.
Scale:
Range (sine wave):
Precision:
Reference pitch:
Dimensions:
Weight:
Batt ery life:
Included items:
*M Sett ings are remembered even when the power is off .
• Specifi cations and appearance are subject to change without notice for
improvement.
In tune.
9 (439Hz)
0 (440Hz)
1 (441Hz)
90°
20°
20°
Shuttle lights (*M)
Specifi cations
12-note equal temperament
A0 (27.50 Hz)–C8 (4186 Hz)
+/-0.1 cent (Strobe meter)
A4 = 436–445 Hz (1 Hz steps)
64 mm(W) X 49 mm(D) X 66 mm(H)
2.52'' (W) X 1.93'' (D) X 2.60'' (H)
37 g/1.31 oz. (including batt ery)
approximately 100 hours (tuner continuously operat-
ing, A4 input, when using alkaline batt ery)
Owner's manual, One AAA batt ery
The pitch is sharp.
2 (442Hz)
... 5 (445Hz)
180°
360°
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