User manual

54
Chapter 4: Using CVs and Gates
Sequential
4. program select button 1 LED lights up. This indicates that the CV Out
Low Point is being adjusted.
5. Press and hold any key on the Prophet-10 to send a gate to the exter-
nal device, so that the external device can be heard. The Prophet-10’s
keyboard does not affect the CV Out voltage when in CV Calibration
Mode.
6. Use the group select (decrement) and bank select (increment)
switches to make negative or positive adjustments to the CV Out Low
Point, bringing the external device’s pitch to “C”. The range is from -99
to 99, adjusting the CV Out Low Point by roughly +/- 90 mV.
7. Press 2 to begin adjusting the CV Out High Point.
8. Repeat steps 5-6. The target pitch for the CV Out High Point is “C” ve
octaves above the Low Point pitch.
9. Press program select button 8 to exit CV Calibration Mode.
Adjusting the Prophet-10’s CV Input Scaling:
The Prophet-10 is calibrated at the factory so that 0v received at the
rear-panel cv in jack will produce the same pitch as the lowest C note
on the instrument’s keyboard, and 5v will produce the highest C note.
Depending on the device you wish to use to control one voice of the
Prophet-10 from the CV Input, you may need to make slight adjustments
to these voltage points in order for your controlling device to cause the
Prophet-10 to produce the correct pitch. Some devices may not produce
perfect Volt/Oct voltage scaling, but the Prophet-10 can accommodate.
Adjusting CV Input scaling:
1. Connect the CV Out of the controlling device to the Prophet-10’s rear-
panel cv in jack using a standard ¼ inch TS patch cable.
2. Connect the Gate Out of the controlling device to the Prophet-10’s gate
in using a standard ¼ inch TS patch cable.
3. Enter CV Calibration Mode by holding down the globals switch and
pressing program select button 5.
4. program select button 1 LED lights up. Press program select button 3
to navigate to the CV In Low Point adjustment.
5. Send a Gate signal from the controlling device so that the Prophet-10
can be heard.