Peterson Strobe Center 5000-II - Manual (Page 15)

Page 13
Key #1 is used to Start a TMPR file; also to use and/or
edit a new or existing TMPR file.
Key #2 Copies or Deletes a Custom TMPR file.
Key #3 returns the tuner to the Run Mode.
Key #4 Stops an active TMPR or STRCH File.
Key #1 begins the process of naming and editing a
new temperament file.
Key #2 is visible only from custom user files, and
goes to the Edit sequence for the file name at the
cursor.
Key #3 returns to the TEMPERAMENT MENU.
Key #4 activates the selected temperament and
returns to RUN Mode.
TEMPERAMENT MENU
PLEASE SELECT MODE
START COPY
–EDIT –DEL RUN STOP
1 2 3 4
d. Press the #1 key labeled START-EDIT to call up the listing of all preprogrammed temperaments, and any custom
temperaments you have saved in the memory. The display screen will first show the 8 temperaments
preprogrammed into the Strobe Center 5000: The cursor is an underline beneath the first character of any file
name. In this first screen it shows as"EQUA", with an underline under the "E" character.
SELECT TMPR =
EQUA PYTH JUMA MEAN
WRK3 KRN3 YONG KLNR
NEW (EDIT) CNCL START
1 2 3 4
e. Use the Pitch Down and Pitch Up Keys (Down
Arrow - cursor forward and down; and Up Arrow - cursor up and back) to scroll the cursor through the
preprogrammed temperaments. When the cursor is on the eighth Name on any page of stored temperaments (in
this case YONG), press the Down Arrow key again and the tuner will display the first memory page of your custom
temperaments. Similarly, when the cursor is on the first Name of any custom temperaments screen, pressing the
Up Arrow key for the Back Cursor will show the previous page of custom or preprogrammed temperaments.
When the cursor is on the temperament memory file you desire, press the #4 function key to load this temperament
into the operation buffer of the tuner. The display will then return to the Run Mode screen and indicate the chosen
temperament file.
The temperaments listed on the screen above are the eight preprogrammed temperaments shipped with the Strobe
Center 5000. These eight temperaments are stored in a non-alterable, non-erasable memory of the tuner.
Remembering that there is always a perfect 2/1 frequency ratio (and 1200 Cents) between all octaves, each of the
eight Preprogrammed Temperaments are briefly described below:
EQUA - EQUAL TEMPERAMENT is the standard tuning scale in which the tuner powers up. There are exactly 100 Cents
between each note in the chromatic scale and 1200 Cents in each octave. Equal Temperament has been the standard musical
tuning used throughout the world since about 1850.
PYTH - PYTHAGOREAN TUNING is the most ancient method of tuning musical instruments in our recorded history of
Western music. This tuning was the musical standard for more than 1000 years, until the fourteenth century. It is based on
the exact, whole number frequency ratios of 2/1 for octaves, 3/2 for Perfect fifths, and 4/3 for Perfect fourths. The tuning
was started with the note E= and proceeded in an ascending circle of Perfect fifths (and descending octaves), ending on the
note G<. The interval E= - G< is much too wide to be usable and is known as a "wolf" tone. Major thirds are very wide,
and minor thirds are very narrow compared to the Equal Temperament to which we are accustomed. Thus, triads will sound