User Manual

19
Initializing
Hold down both the DATA ENTRY [+] and [-] buttons, and press the [STANDBY/ON] switch to turn on the power.
“Memory is Initialized!” appears on the HARMONY display and all the settings are reset to the factory default values.
Because initialization will erase all User Temperament and Metronome settings, it is recommended that you note
down any settings on the Blank Chart on page 21.
If an error occurs, a message will appear on the display. Use the following chart to confirm the problem and find an
appropriate solution.
Calculating Pitch
What is a Cent?
A cent is a unit used to measure pitch that equals 1/100th of a semitone. Using cents to measure pitch, we can cal-
culate the pitch using simple addition/subtraction rather than multiplication/division. For this reason, the cent is
commonly used in music and acoustics as a standard for measuring pitch.
Temperaments Included in the HD-200
Equal Temperament
In an equal temperament, the octave is divided into 12 equal steps (equal frequency ratios).
The frequency ratio between neighboring notes is
(1.0594631). This temperament is
usually tuned relative to a standard pitch of 440Hz.
Pure Major This tuning preserves the pure mathematical intervals of the major scale, especially for the
triad chords. This tuning includes pure fifths and thirds, both large and small interval whole
tones, and chromatic scale semi-tones, so changing keys requires changing the pitch ratio of
every note in the scale, making it impractical for keyboard or fretted instruments.
Pure Minor Like the pure major, this tuning preserves the pure mathematical intervals of the minor
scale. Changing keys also requires changing the pitch of every note in the scale, making it
impractical for keyboard or fretted instruments.
Error Messages
Message Cause Solution
Low Battery ! Battery power is low. Replace all batteries.
Low Backup Battery ! The lithium backup battery power is low. Contact the dealer from whom you purchased
the instrument and have the battery replaced.
Memory is Initialized ! There is an irregularity in the memory
backup data.
The instrument’s data is reset to factory
defaults.
Contact the dealer from whom you purchased
the instrument.
Keyboard Error !
Keyboard Data Error !
The keyboard may be malfunctioning. Contact the dealer from whom you purchased
the instrument.
About the Preset Temperaments
(Cent Value) =
1200
× log (Pitch Ratio)
(Pitch Ratio) = 10
log2
× (Cent Value)
log2
1200
12
2