Calibrating 1V/oct and Transpose Jacks
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.
Page of
24
32
Octave
Scale
Press Transpose
Calibrate 1V/oct
+
Spread
Sphere
Push 2 sec.
Save Calibration