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valuable tuning. When the Accu-Tuner is turned on, the PAGE number is automatically set to
zero. A page of memory has to be selected before storing a tuning to memory.
To select a page of memory, turn on the Accu-Tuner, press the TUNE button, press the PAGE up
button to step up through the pages of memory. The pages will stop at page “EXAMINEE”,
release the PAGE up button, press PAGE up button again to enterh the generic tunings on pages
141 to 309.
To access the pages of memory from 310 to 589 you will need to turn on the Accu-Tuner, press
the TUNE button and then hold down the SHIFT button and then hold down the SHIFT 2 button
which will switch the page of memory to 310. Any time you hold down the SHIFT and SHIFT 2
buttons the page number will step up to page 310.
FAC TUNINGS
Once the operation of the Accu-Tuner in the TUNE mode is understood, it is easier to work with
the FAC program to create an 88 note tuning. In this mode, the Accu-Tuner creates a tuning that
is derived from the measurement of three stretch numbers on notes (F3, A4, and C6) on the piano
being tuned. The FAC program includes both an optimum partial selection and a calculated cents
setting for all 88 notes on the piano. Once the stretch numbers are measured and stored in the
Accu-Tuner, the rest of the tuning is automatic. Every time the note or octave changes, the
computer references the FAC tuning on the page of memory and sets the Accu-Tuner up correctly
for each note.
With an FAC tuning the upper left side of the display shows the note on the piano that is being
tuned, while the right hand side in the upper half of the display shows the cents deviation of the
particular partial being tuned. The partial that the Accu-Tuner is listening to (first, second, fourth,
or sixth) does not show on the display. To view the partial the Accu-Tuner is listening to, switch to
the TUNE mode, by pressing the TUNE button. Don't forget to switch back to the page in memory
by pressing the MEM button before going on to the next note. If the MEM button is not pressed,
the Accu-Tuner will continue in the TUNE mode, and not follow the FAC tuning.
The pitch of an FAC tuning is normally created at 440Hz pitch. A pitch correction can be added or
subtracted up to 150 cents flat or sharp. This is very helpful if you would like to float the pitch of
the piano. If a piano is 140 cents flat, it is easy to create a tuning seventy cents flat and smoothly
bring the piano halfway up to pitch today.
The FAC tunings fit the piano better than previous stretch tunings and sound better over the mid-
range section as well as providing a beautiful bass and treble tuning. The high treble is tuned in
double octaves, which will please many tuners, and those who prefer single octaves can easily
modify the last few notes of the treble to suit your own taste. The standard FAC tuning can be
altered to suit personal preference, be sure to read the section covering adjusting the double
octave beat, see page 24.
MEASURING AND STORING THE FAC NUMBERS
BASIC METHOD
1)
Set the Accu-Tuner to F5, zero cents in the TUNE mode. Play one string of F3 and use the
tuning hammer to stop the rotation of the LEDs.
2)
Press OCTAVE up to step up one octave on the Accu-Tuner to F6, and play F3 again, and use
the CENTS buttons to stop the rotation of the LEDs. The cents deviation now displays the F3
stretch number, which is the difference in cents between the fourth and eighth partials of F3.
3)
Hold the SHIFT button, press STO-STRETCH, release STO-STRETCH, release the SHIFT button
last. If successful, the Accu-Tuner will jump to A5 and zero cents.
4)
With the Accu-Tuner at A5 and zero cents, play one string of A4 and use the tuning hammer to
stop the rotation of the LEDs. Now press OCTAVE up to step up one octave on the Accu-Tuner
to A6. Play A4 again, and use the CENTS button to stop the rotation of the LEDs. The cents
