Manual

Use mode 4 "TEMP. HIST" for this. First

select a temperament. The display will be

similar to the following:

WERCKMEISTER-III

>4< NUMBER 02

Now press keys "S" and "E" briefly and

simultaneously:

CENT REF.: A

>4<

Select the cent relation tone with the keys "<"

or ">" . Then press key "E":

TRANSP. A --> A

>4<

Select the transposition tone with the keys

"<" or ">" . Then press key "E":

>4< TEMP. HIST->

Select mode 1 with the keys "<" or ">":

blinking: KIRNBERGER III

CENT REF D >1< TUNING ->

TRANSP A --> C

After pressing key "E" you can start tuning.

3.6 CENT SETTINGS FOR PIANO TUNING

Striking a string on a piano produces a tone consisting of several harmonics which are not in tune

with their fundamentals.

For example, the tone produced by a piano string for tone a' can consist of a 440 Hz fundamental,

with a second harmonic at 881 Hz and a fourth harmonic at 1768 Hz. If the partials had a harmonic

proportion of frequencies to each other, the second harmonic would have a value of 880 Hertz and

the fourth harmonic 1760 Hertz. However, in our example the second harmonic is one Hertz and

the fourth harmonic 8 Hertz higher than demanded in theory.

This is known as the "Inharmonicity" of a piano string. It is caused by the stiffness of the string and

can be different from instrument to instrument. This inharmonicity explains why, on a piano, the

bass has to be tuned lower than the theoretical frequency and the descant higher. The five

different stretchings of the octaves have been developed through extensive tests with various

upright and grand pianos. The diagrams of these stretchings may be found on the last page.

In the lowest octave (A 2 to G#) the Tuning Set responds to the fourth harmonic, and in the octave

(A 1 to g#) to the second harmonic. This is the reason for the two discontinuities in the graphs.

3.7 SPECIAL ADJUSTMENTS

In the same way that a language can be selected, it is possible to change some other attributes of

the set, so that you can optimize the CTS-5 for your application. The adjustments will be

permanently stored, even if the device is switched off. Operate as follows: