Page 46
Slim Phatty User’s Manual - The User Interface
Page 47
Slim Phatty User’s Manual - The User Interface
Notes: All calibration procedures should be thoroughly reviewed before proceeding. Observe the following
precautions and recommendations before attempting any calibration operation.
1. The SP must be at a stable and constant temperature during calibration. You should allow the SP to
warm up 45 minutes before beginning any calibrations.
2. The Note Calibration procedure takes about two hours to cover the full MIDI note range. If you are
performing this calibration, allow sufficient time for the calibration process to complete.
3. The SP is calibrated at the factory. The Note Calibration operation is not necessary unless the SP
goes out of tune. The Note Calibration overwrites the current calibration lookup table (LUT). Performing a
Factory Restore operation will not cause the LUT to revert to the factory calibration.
4. You can exit out of a calibration at any time by pressing the MASTER button. For the Note Calibration
operation, only those notes that have already been calibrated will be saved. The remaining notes will
revert to their previous calibration values. Interrupting the Note Calibration operation in this manner may
result in inaccurate tuning.
5. Note Calibration is not meant for overall tuning drifts, such as if the SP is 10 cents sharp. Small tuning
drifts are best taken care of using the AutoTune function.
6. If you perform a Note Calibration, it is highly recommended that you also perform the Oscillator 2
Frequency Calibration to ensure accurate frequency tracking with the new LUT.
The sixth page of the System Utilities menu allows you to calibrate the
Slim Phatty. In the past, calibration of analog synthesizers had to be
performed manually by experienced service personnel. The SP’s built-
in calibration utilities now allow you to perform many of these proce-
dures yourself, without the expense and hassle of shipping the SP back
to the factory for calibration. The SP’s calibration utilities allow you to
perform individual calibrations on the oscillators and the note range.
For example, the Note Calibration operation individually tunes each
note exactly for each oscillator and octave setting. This tuning informa-
tion is stored in the SP’s EEPROM and referenced when playing a note
to guarantee that the SP’s oscillators will be in tune. Other calibrations
ensure that variable controls such as the pitch wheel amount and oscil-
lator 2 detuning function predictably and precisely.
To access the calibration options, press
ENTER
, then use the
VALUE
knob to select the desired calibration.
While the restore process is taking place, the LCD will briefly
display a ‘RESTORING FACTORY DEFAULTS’ message. When
complete, the screen will return to the System Utilities menu.
