Korg TONEWORKS DTR-2 User manual

DIGITAL TUNER
DTR-2
Owner’s Manual
TONEWORKS
HYPERFORMANCE RRODUCTS
KORG
NOTICE
KORG roducts are manufactured under strict s ecifications and voltages required by each
country. These roducts are warranted by the KORG distributor only in each country. Any
KORG roduct not sold with a warranty card or carrying a serial number disqualifies the
roduct sold from the manufacturer’s/distributor’s warranty and liability. This requirement is
for your own rotection and safety.
KORG KORG INC.
15 – 12, Shimotakaido 1-chome, Suginami-ku Tokyo, Ja an.
© KORG INC.

SPECIFICATIONS / OPTIONS
Scale: 12-tone tem erament
Meter: CENT indication
Measuring range: A0 – C8 (27.5 Hz – 4186.0 Hz)
Measuring system: ± 1 CENT
Range of calibration:
◦Manual calibration: 438 Hz – 445 Hz (1 Hz ste s)
◦Automatic reference calibration: 428 Hz – 452 Hz
Connecting jacks:
◦Front anel: INPUT jack, MUTE jack
◦Rear anel: INPUT jack, OUTPUT jack, MUTE jack
Power consum tion: 3W
Dimensions (W x H x D): 482 x 44 s 114 mm (19” x 1 ½” x 4 ¾”)
Weight: 1.7Kg (3.75 lbs)
Accessories: Insulation washer (x4), insulation bushing (x4), screw (x4)
* A earance and s ecifications are subject to change for im rovement without advance
notice.

FRONT PANEL AND REAR PANEL
1) POWER switch
2) INPUT jack
Jack for connecting the instrument to be tuned.
However when a lug is connected to this jack,
the rear anel INPUT jack (10) cannot be used.
3) MUTE key/jack
Sets mute on/off. When mute is turned on,
sound from the out ut jack is muted, enabling
tuning without roducing sound.
4) MUTE indicator
Lights when mute is set to on (3 MUTE
key/jack).
5) LED meter
Indicates the difference between the reference
itch and in ut sound in units of CENTs (within
the range of -50 cents to +50 cents). Adjust the
itch of the instrument so that the center LED
lights.
6) CALIBRATION scale
Indicates a set reference itch by a blinking
NOTE LED (7) corres onding to
CALIBRATION scale. For exam le, if the itch
is 440 Hz, E of the NOTE LED blinks, and if the
itch is 441 Hz, F of the NOTE LED blinks. If a
reference itch set by automatic reference
calibration exceeds the range of 438 Hz – 445
Hz, either C or # of the NOTE LED blinks
dimmer according the excess level.
7) NOTE LED
Indicates the itch name closest to the in ut
sound by lighting the LED and # during tuning.
Indicates the set reference itch with a blinking
LED during calibrating (6 CALIBRATION
scale).
8) CALIB key (Calibration key)
Sets the reference itch (the center of a iano =
A4) for tuning. There are two ways of setting
the reference itch; manual calibration and
automatic reference calibration.
9) Rack mount hole
10) INPUT jack
The jack for connecting the instrument to be
tuned. However when a lug is connected to
the INPUT jack (2) on the front anel, this
INPUT jack cannot be used.
11) OUTPUT jack
Connects to the am lifier, mixer, etc. Out uts
the in ut from the INPUT jack (2 or 10).
12) MUTE jack
Selects mute on/off with the latching ty e
footswitch connected to this jack. When Mute is
ON, sound from the OUTPUT jack (11) is
muted, enabling silent tuning. Mute lights on
the MUTE indicator (4). However when a
footswitch is connected to the MUTE jack (3)
on the front anel, this MUTE jack cannot be
used.

TUNING PROCEDURE
Connect an instrument to the INPUT jack (2 or 10). However when the lug is connected to the front
anel, the rear anel INPUT jack cannot be used. When tuning by listening to the sound, connect an
am lifier to the OUTPUT jack (11) of the DTR-2
1. Turn the POWER switch (1) on and set the reference itch according to the “CALIBRATION
PROCEDURE”. The left side LED of the LED meter lights and the system is ready for tuning.
(When the DTR-2 is turned on, the reference itch is set to 440 Hz.)
2. Play a single note on the instrument. The note name nearest to the note is lit on the NOTE LED
(7). If the itch of the instrument is higher than the note by a semitone, a # (shar ) is indicated. If
the itch of the instrument is extremely off, the desired note name will not be indicated. In such a
case, adjust the itch of the instrument so that the correct note name will be indicated. Take care
not to lay two notes or more simultaneously.
3. Adjust the itch of the instrument. Check that the desired note name lights on the NOTE LED
before adjusting the itch of the instrument so that the center LED lights on the LED meter (5).
4. For stringed instruments, follow ste s 2 and 3 for each string.
About CENT:
Cent is the minimum unit for indicating the ercentage of itch. A semitone is 100 cents and 1 octave
1200 cents. The DTR-2 meter indicates the error between the itch of an in ut sound and the correct
itch in units cents. One cent is a very small unit, however, and an error of about ±3 cents does not
resent a serious roblem.
About the reference itch and calibration:
For tuning instruments, A4 (=440 Hz) at the center of a iano is used as the reference itch. Setting
the itch by this reference is called calibration.
CALIBRATION PROCEDURE
Calibration consists of manual calibration that sets the reference itch (the center of the iano = A4)
using the DTR-2 main unit and automatic reference calibration in which the DTR-2 recognizes the
itch of the instrument and sets it as the reference itch. Once set, the reference itch will be retained
until the POWER switch is turned off.
Manual Calibration
1. Turn the POWER switch (1) on. When the DTR-2 is turned on, the reference itch is set to 440 Hz.
2. Press the CALIB key (8) several times and set the reference itch within the range of 438 Hz to
445 Hz. Press the CALIB key once to make E of the NOTE LED (7) blink when the reference itch
is 440 Hz, or F to blink when the reference itch is 441 Hz. In other words, the LED corres onding
to the current reference itch set by the DTR-2 blinks. (In the case the reference itch is set
beyond the range of 438 Hz to 445 Hz under automatic reference calibration, C or # darkly flashes
according to a ortion exceeded). Press the CALIB key continually to change the reference itch.
Each time the key is ressed, the blinking NOTE LED moves and the setting of the reference itch
rises by 1 Hz as shown below.

→ 438 → 439 → 440 → 441 → 442 → 443 → 444 → 445 →
↑ ↓
←--- ←--- ←--- ←--- ←--- ←--- ←--- ←--- ←--- ←--- ←--- ←---
Note: If the CALIB key is ressed for more than one second, the automatic reference calibration
starts functioning.
3. If the CALIB key is not ressed, the system is ready for tuning. (The NOTE LED turns off and the
left side LED of the LED meter lights.)
Automatic Reference Calibration
1. Turn the POWER switch (1) on. When the DTR-2 is turned on, the reference itch is set to 440 Hz.
2. To set the sound of the electric instrument or electric guitar as the reference itch, lay a single
note on the instrument. The note need not necessarily be “A”. Since the DTR-2 measures the itch
error within the range of ±50 cents, it makes automatic reference calibration after automatically
determining the itch name (within the range of ±50 cents) if the reference itch is not “A”. In this
case, a LED of the NOTE LED (7) corres onding to the calibration value after re lacing the in ut
sound with “A4” (the center of the iano) flashes.
Note: Automatic reference calibration is disabled if the sound to the in ut is unstable or too weak to
measure.
3. Press the CALIB key (8) for one second or longer when the lighting of the LED meter (5) becomes
stable. Press the CALIB key (8) until you see the lighting of the LED meter is turned off for an
instant. The DRT-2 measures the itch of the in ut sound and calibrates automatically using the
measured sound as the reference itch. The center LED on the LED meter lights, and the NOTE
LED blinks.
Note: Pressing and immediately releasing the CALIB key starts manual calibration.
Note: Pressing the CALIB key before the LED meter indication becomes fully stable may revent
the reference itch from being correctly measured.
Note: In automatic reference calibration, the reference itch can be set within the range of 428 Hz
to 452 Hz. If the setting exceeds this range, C or # of the CALIBRATION indicator blinks dimly
according to the ortion exceeded.
4. After one second or more has ela sed when the NOTE LED flashes, the system is ready for
tuning. (If no sound is in ut, the NOTE LED turns off and the left side LED of the LED meter lights
u .)
Thank you for urchasing the TONEWORKS Digital Tuner DTR-2. To ensure long, trouble-free
o eration, lease read this manual carefully.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN