22
To calibrate, play the lowest note on the keyboard, and set the VCO FREQ
knob to the center position. Send a 0V signal to the VCO EXP IN patch
point and measure the frequency of the VCO. You can use an instrument
tuner for this function. Next, send a +3V signal to the VCO EXP IN patch
point. Adjust VR5 to eight times the first frequency measurement (this
equals 3 Octaves). Repeat this process to verify calibration accuracy.
Note that on the Patchable
Header, the KB CV is output
as about 0.3 Volts/semi-
tone, which is equivalent
to about 3.6 Volts/Octave.
This allows the use of the
Keyboard as a wider range
controller than if it were
output as 1 Volt/Octave.
CREATING CABLES
For internal patching use the included Patchable Header cables. If you
want to patch the Werkstatt to external gear, you may want to convert
the included patch cables so they can plug into the 1/4” (3.5mm) patch
points on the other products. One simple technique is to take a 1/4” TS
patch cable and cut it in half to make two half cables. Now take one of the
Werkstatt patch cables and cut it in half as well. Since the ground is being
provided by the audio output, you would only need to splice and solder
the inner conductors of the two half-cables together, and then insulate
the splice with electrical tape or heat-shrink tubing.
M U S I C I N C
VCO EXP TRIM
V C O
VR1
VCO PITCH
SW1 VCO WAVE
P U L S E
S AW
T P 1 0
T P 8
C14
JMP56
R 2 3
R37
C27
C30
R40
R47
TP14
R39
R43
R46
VR5
V C O M O D
SW3
VCO MOD SRC
U 4
