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Summary of Contents for Inventronics SANDERSON ACCU-TUNER
- Page 1 SANDERSON ACCU-TUNER™ OPERATING MANUAL INVENTRONICS,INC. 130 MIDDLESEX RD, SUITE 14 TYNGSBORO, MA 01879-2725 “www.Accu-Tuner.com” Inventronics@aol.com 1-800-FAST-440 OR (978)649-9040...
- Page 2 WITH SPECIAL CONTRIBUTIONS BY: RICK BALDASSIN JAMES W.COLEMAN,SR ROBERT CONRAD THIS MANUAL COPYRIGHTED. RIGHTS RESERVED. THIS DOCUMENT MAY NOT, IN WHOLE OR PART, BE COPIED, PHOTOCOPIED, REPRODUCED OR TRANSLATED WITHOUT PRIOR CONSENT IN WRITING FROM INVENTRONICS, INC. ©2006 INVENTRONICS, INC. TYNGSBORO, MA 01879...
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Page 3: Table Of Contents
Table of Contents SANDERSON ACCU-TUNER™ INTRODUCTION..............................2 GETTING STARTED ............................3 LOW-BATTERY WARNING SIGNAL ........................3 THE FOUR MODES OF OPERATION ......................3 THE TUNE MODE ..............................4 THE FAC MODE..............................4 MEASURING AND STORING THE THREE STRETCH NUMBERS ................5 REVIEWING THE FAC NUMBERS ........................ - Page 4 APPENDIX F................................21 ONTIGUOUS NTERVAL UNING ESTS FOR LECTRONIC IANO UNERS APPENDIX G...............................22 CTAVE UNING APPENDIX H...............................23 DUAL SYSTEMS FOR SMOOTHING OUT THE STRINGING BREAK SPECIFICATIONS..............................24 INPUT/OUTPUT JACKS ............................. 24 ACCESSORIES ..............................25 PROGRAM OPTIONS ............................25...
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Page 5: Sanderson Accu-Tuner
INSTRUCTION MANUAL INTRODUCTION The Sanderson Accu-Tuner ™ (SAT) and Sanderson Accu-Tuner II ™ continue to be the world's first and finest programmable computer-controlled tuning instruments. They are designed to aid the professional tuner-technician to achieve outstanding tuning results without spending an exorbitant amount of time doing so. Aural piano tuners can "memorize"... -
Page 6: Getting Started
GETTING STARTED When first turned on the Sanderson Accu-Tuner will be in the calibration mode or at the exact location where the unit previously "timed out". The SAT checks itself for accuracy during calibration. Two to five lights may be lit and any rotation shows the variation from A-440. -
Page 7: The Tune Mode
4. The MEMORY mode enables a tuner to store and retrieve complete 88-note tunings. The number of pianos that each SAT can store depends upon the number of pages added in memory when it is purchased. The SAT II comes with 60 pages of memory, while the SAT is standard with 40. -
Page 8: Measuring And Storing The Three Stretch Numbers
Once the operation of the SAT in the TUNE mode is mastered, it is easier to understand the operation of the FAC mode. In this mode, the SAT follows a tuning program that is derived from the measurement of three stretch numbers (F3, A4, and C6) on the piano being tuned. -
Page 9: Reviewing The Fac Numbers
REVIEWING THE FAC NUMBERS To review your FAC numbers, hold down the STRETCH button. While the STRETCH button is held, the left window will show the note F3 and the right window will show the F3 stretch number. Release the STRETCH button and hold it again to view the A4 stretch number. -
Page 10: Fac Tuning From A0 To C8
The FAC method, or any other method, cannot produce perfectly progressing beat rates on a piano with widely scattered amounts of inharmonicity. The FAC tuning will be as good as one can expect or can achieve by any method given the scale-design problems inherent in the piano itself. -
Page 11: Pitch Raising
PITCH RAISING The Sanderson Accu-Tuner is able to automatically calculate the overpull or anticipated drop of a given note during the course of a pitch raising. The SAT measures the unknown pitch first, then compares it with the corresponding note of the... -
Page 12: The Reset Button
The pitch-raise calculator is designed to be used with a tuning in memory in order to pitch raise the entire piano to a realistic piano-tuning curve. Choose a page in memory with a piano similar to the one to be pitch raised or measure and store an FAC tuning. - Page 13 Fig. 5. Display with non-standard pitch warning. It is also possible to tune off-pitch by accident. To help prevent this from happening, a plus sign appears in the NOTE/OCTAVE display window as shown in Fig. 5. Whenever the instrument is offset to the sharp side, a plus sign will appear.
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Page 14: Quick Reset Of Cents Window To Zero
QUICK RESET OF CENTS WINDOW TO ZERO It is often convenient to be able to reset the cents reading to zero without having to go to the trouble of counting the cents down to zero. This can be done with the CAL button. Hold the SHIFT button down, and press the CAL button quickly. The CENTS window will revert to zero cents, but the NOTE window will remain as it was and the SAT will not go over to the CAL function. -
Page 15: Storing A Tuning In Memory From Aprintout
STORING A TUNING IN MEMORY FROM A PRINTOUT 1. Turn the Sanderson Accu-Tuner on and press the TUNE button. 2. Select the PAGE by holding SHIFT and then using PAGE button to get to the desired page in memory that you want to devote to this piano. -
Page 16: Up Or Down Footswitch\Thumb Switch
UP OR DOWN FOOTSWITCH\THUMB SWITCH The direction in which the foot switch progresses across the keyboard can be changed from "up" to "down" and back again at will. When the SAT is first turned on, the foot switch moves up the keyboard. To reverse the direction, hold the foot switch down, hold the NOTE down button, release the foot switch, and then release the NOTE down button. -
Page 17: Patent Notice
The method of tuning a piano by measuring its inharmonicity and then creating a numerical tuning customized to fit that piano are the subject of Patent No’s 3,968,719, 3,982,184, 4,014,242, 5,285,711 issued to Dr. Albert E. Sanderson of Inventronics, Inc., and other patents pending. INPUT-OUTPUT JACKS There are six input-output jacks on the back of the SAT that increase the versatility of the SAT for various special purposes. -
Page 18: Battery Charger Indicator
NI-CAD The standard battery used in the Sanderson Accu-Tuner is a Nickel-Cadmium (Ni-Cad) battery. The Ni-Cad will run the SAT for 40 to 60 hours, and can be recharged hundreds of times. To achieve the longest battery life we do recommend that the SAT be used until the "Lo-Bat"... -
Page 19: Two Year Warranty
TWO YEAR WARRANTY* INVENTRONICS offers a 2 year warranty from date of purchase, on parts and labor. We will repair or replace the Accu- Tuner, as determined at the factory, should it be found defective. This warranty is not transferable, and applies only to the original purchaser of the equipment. - Page 20 Cents Tables for some Non-equal Temperaments Pythagorean Temperament. -15.6 13.7 -2.0 -17.6 -9.8 11.7 -3.9 -11.7 -5.9 -13.7 -7.8 The usual practice is to use only the above flats. Meantone Temperament 27.4 -10.3 -24.0 30.8 17.1 -20.5 -6.8 20.5 -17.1 10.3 -3.4 23.9...
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Page 21: Cents Tables For Some Non - Equal Temperaments
Frequency of Frequency of Cents Offset Cents Offset 23.5 -7.9 19.6 -11.8 15.7 -15.8 11.8 -19.8 -39.8 -80.5 415.3 -100.0 -3.9 -101.3 Formula for calculating cents offset of A4 at 420Hz: Log(420/440,2)*1200 = -80.54 APPENDIX C Aural and Visual Tuning (The best of both worlds) By J. -
Page 22: What Are Partials And Beats
By J. Coleman, Sr. A piano string has a series of partials (sometimes erroneously called harmonics) which are approximately whole number multiples of the fundamental frequency (first partial). For example the 3rd A on a piano (counting from A0, A1, A2) has a theoretical frequency of 110 cycles per second (or Hertz). - Page 23 Direct-Interval Tuning Direct-interval tuning is a way of using the Sanderson Accu-Tuner™ that exactly simulates the way fine aural tuners tune by ear. Each interval is tuned by setting its width to a specified number of cents, which is verified by a direct measurement.
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Page 24: Contiguous -Intervalt
Step 8. Tune outwards from the mini-temperament with major thirds down to A2 and up to A3. The thirds tuned downwards are constant width but the thirds tuned upwards may have to be calculated if their width varies. Use straight- line interpolation based on the three known thirds in the A3-A4 octave, to get numbers for the missing thirds. -
Page 25: Octave Tuning
Contiguous major thirds will beat in the ratio of four to five because the major third itself consists of two notes whose frequencies are in the ratio of four to five. Displacing any interval up the keyboard will speed it up theoretically in the ratio of the frequencies of the two root notes involved. -
Page 26: Dual Systems For Smoothing Out The Stringing Break
CLASS C: Lower note is the reference note. If the beat rate between the test note and the upper note is too slow as compared to the beat rate of the test note and the reference note, lower the upper note. If the beat rate with the upper note is too fast, raise the upper note. -
Page 27: Specifications
1, then take a measurement on G3 (the lowest plain string) and transfer that reading to F6 in order to compute and store on page 2. In this case all of the plain string notes would be tuned from page 2 and all of the wound strings would be tuned from page 1. SANDERSON ACCU-TUNER™ SPECIFICATIONS NOTE RANGE: 9 Octaves. -
Page 28: Accessories
Standard with the SAT II or as an optional modification to other SAT's. Makes it possible to transmit or receive stored tunings to a computer. PIANO LIBRARIAN: An Inventronics program for storing and cataloging piano tunings in conjunction with computers running Windows 95 or newer operating systems. Please call for current operating system compatability. PATENTS:...
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