Calibrating 1V/Oct And Transpose Jacks - 4ms Company Spherical Wavetable Navigator User Manual

Calibrating 1V/oct and Transpose Jacks

Calibrate 1V/oct
Press Octave + Transpose
Octave
+
Spread
Scale
Save Calibration
Push 2 sec.
Sphere
The 1V/oct and Transpose jacks are calibrated at the factory to change the pitch by
one octave for every 1.000V received. However, due to issues with impedance between
equipment, offset and gain errors from using buffered multiples, mis-calibrated or
inaccurate outputs from sequencers and keyboards, non-standard tuning systems such
as 1.2V/oct, etc., it is sometimes necessary to calibrate the SWN to your external
equipment. The process is easy:
1. Unpatch all cables in the 1V/oct and Transpose CV jacks. It's OK to listen to the
audio, but keep in mind that the pitches may sound out of tune while calibrating.
2. Press the Octave and Transpose knobs at the same time. The top row of buttons
will turn blue. If you make a mistake and want to exit calibration mode without
changing anything, press Octave and Transpose again.
3. Make sure the center switch is flipped to 1V/oct (not flipped to VCA).
4. Patch a cable from the 1V/oct output of the external equipment (e.g. the CV output
jack of a sequencer, or the Pitch CV output of a keyboard) into the Channel A 1V/
oct jack on the SWN.
5. Play and hold a C1 on the sequencer or keyboard.
6. Press the Channel A button to latch the C1. The button will turn red.
7. Play and hold a C3 on the sequencer or keyboard.
8. Press the Channel A button to latch the C3. All six buttons and LFO lights will turn
white.
9. To save your calibration values, press and hold the Browse knob for three seconds.
The SWN will return to normal mode and will use these values even after power
down. If you want to test the new calibration values, press Octave and Transpose
and the new values will be used, but the old values will be restored the next time
you power the SWN on.
You also can calibrate each jack separately. This is not usually necessary, but could be
useful if you want to use multiple tuning systems for each channel. To calibrate each
jack individually:
1. Perform steps 1–3 from the above procedure.
2. Perform steps 4–8, but use the Channel F 1V/oct jack and the Channel F button.
3. Repeat steps 4–8 again using Channel E's jack and button.
4. Repeat steps 4–8 again using Channel D's jack and button.
5. Repeat steps 4–8 again using Channel C's jack and button.
6. Repeat steps 4–8 again using Channel B's jack and button.
7. Repeat steps 4–8 again using Channel A's jack and button.
8. Repeat steps 4–8 using the Transpose CV jack and by pressing the Transpose
knob instead of a Channel button.
9. Save your values by holding down the Browse knob for three seconds.
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