Sequential Pro One - Oscillator a Test; OSC a Test Patch

1-3 OSCILLATOR A TEST
Figure 1-1
OSC A TEST PATCH
1. Patch according to Figure 1-1.
2. Check that 0SC A FREQUENCY knob range exceeds one octave. For reference,
play C2 (which is one octave below the highest key, C3) and remember pitch. Then
hold C1 and raise OSC A FREQ. The pitch should increase smoothly, approaching the
reference pitch at 7 - 8 on the dial. At 10 the pitch should be at least a whole step
above the reference.
3. Turn OSC A FREO to 0. Check OSC A OCTAVE switch function by playing C2 and
.. .
switching octaves down to 2, 1, and 0. NOTE: When switching octaves with a key
depressed, it is normal to hear the pitch "jump" between octaves.
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4. Switch OSC A OCTAVE to 2, and switch OSC A SYNC on. Rotate OSC A FREQ
knob 0 - 10 to check sync function.
5. Switch OSC A SYNC off. Switch OSC A SAWTOOTH off. Switch 05C A PULSE on.
The difference between the 'Ibrassylr sawtooth and tfwoody" pulse should be obvious.
Rotate OSC A PULSE WIDTH knob 0 - lo, listening for the timbral effect of varying
harmonics. The pulse will degenerate to dc (or very nearly dc--99% duty cycle) at the
extreme knob settings, resulting in no (or very little) sound. Find the setting where the
second harmonic drops out (50% duty cycle). This normally occurs between dial
markings 5 and 6.