Peterson Strobe Center 5000-II - Manual (Page 9)

Page 7
rotational speed of each strobe disc is doubled beyond the normal tuning speed. The dark tuning indications are
then shifted downward by one octave into the middle region of the tuning wheels. When in the Display +2 mode,
press the Display key one more time and the tuner wheels are shifted to the -1 mode.
Press the Display key one more time to return the Strobe Center 5000 back to the normal speed tuning mode. The
Display modes will follow this sequence as the Display button is pressed repeatedly: Normal display mode, Display
+2 mode, Display -1 mode, Normal display mode, etc. When in Display +2 or Display -1 modes, the indicator
panel will show the Display status:
OR
KEY = C
A = 440 00 ¢
HI
+2
SETUP IMAG
KEY = C
A = 440 00 ¢
HI
-1
SETUP IMAG
Display for +2 Mode Display for -1 Mode
NOTE - The Display +2 / -1 button is only active in the Run Mode, with the Run Mode screen showing as above.
3. TUNING TO A PITCH STANDARD OTHER THAN A=440
The International Standard pitch of A=440 Hertz (cycles per second) can be raised or lowered to any tuning frequency you
desire within a broad range. This range of adjustment for middle A (A4) is from A = 350 Hz to A = 550 Hz. This modified
standard pitch can be memorized in the Strobe Center 5000 so that the tuner powers-up calibrated for the selected pitch. The
currently selected pitch for "A" is displayed by the LCD indicator screen.
a. To change the pitch standard of the tuner use the following procedure. After the tuner has gone through the
power-up self-check it will then display the Run Mode screen with the standards you have previously chosen. New
from the factory the tuner is set to power-up on equal temperament at A=440Hz. This is shown on the second line
of the screen below as A=440:
KEY = C
A = 440 00 ¢
HI
SETUP IMAG
1 2 3 4
b. From the Run Mode menu above, press key #1 (SETUP) to call up the Setup Menu shown next.