Peterson Strobe Center 5000-II - Manual (Page 4)

Page 2
The built-in microphone will pick up an instrument from across a relatively quiet room. However, if you are working in a
noisy environment it may be helpful to use an external microphone to be more selective and point the microphone directly
at the instrument you wish to tune. At this point you simply play the note you wish to tune.
Each of the 12 tuning wheels is marked with a note corresponding to the chromatic scale. The tuning wheel that matches the
note sounded will glow brightly, and a dark pattern will appear on the wheel. When this pattern appears to be stationary,
the note is perfectly in tune with the equal-tempered scale derived from middle A at 440 Hertz (cycles per second). When
the pattern appears to rotate to the right, the note being played is sharp. Conversely, if the note is flat the pattern will appear
to rotate to the left. The faster the pattern appears to be moving, the farther out of tune the note is. Observe that the pattern
will appear to move more slowly as your instrument is brought more closely into tune, and that it will appear to stop moving
when the sounded note is exactly in tune.
SUMMARY OF FEATURES AND FRONT PANEL CONTROLS
We'll begin with a brief description of the basic features plus the front panel controls and indicators of the
Strobe Center 5000. This will provide you with a quick reference guide to the front panel of the tuner. Detailed information
about each control is explained later in the section titled “Step-by-Step Instructions”.
FRONT PANEL
1. IMPROVED ACCURACY AND STABILITY WITH QUIET OPERATION, 12 SEPARATE MOTORS - An
internal quartz crystal reference provides absolute stability to the tuning accuracy. No warm up period is required unless
the tuner has been subjected to extreme temperatures, either hot or cold. In this instance allow the tuner to sit at room
temperature for about ten minutes before starting. The tuner is accurate to within 1/10 of 1 cent throughout the entire
range of the instrument. Each of the twelve strobe tuning discs is driven by an individual, electronically-controlled
motor. All twelve motor controllers receive their commands from the microprocessor or "brains" of the tuning center.
Gear box noises previously experienced with 12-wheel tuners are entirely eliminated. Separate motors also allow the
versatility of both multiple temperaments and stretch tuning with the Strobe Center 5000.