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Calibration
The four on-board trim pots need to be adjusted for optimum performance. All these adjustments should be done
with the MIX control FCW.
RT1 affects the output gain and may be adjusted from unity gain (FCCW) to 3X gain (FCW). This feature allows
you to match signal levels to other equipment.
RT2 sets the minimum frequency frequency of the VCO. Set the FREQ. control FCCW and the freq. ENV control to
mid position. Turn RT2 CW until the VCO is running at about 5 Hz. The output signal will sound as if it has a fast
vibrato at this frequency. This is not a critical adjustment.
RT3 nulls the signal feedthru. With the SOURCE switch in the EXT. position (and no EXT. input or ENV amount),
insert a signal from a keyboard or other source into the IN jack. Turn up your amp and listen for this signal. Rotate
RT3 for minimum level.
RT4 nulls the carrier feedthru. This is probably the most important adjustment on the module. Since the carrier
signal is always present, an effective null is important to avoid hearing the carrier in the output, when the input
signal is not present. The optimum setting for the trimmer is affected a bit by the SIGNAL GAIN and MIX controls,
CV
CV
*shield not connected this end
3.3"
3.4 strip 1.8"
5"
TYPE
3.5"
shielded*
S1
2.3"
2.5"
4.5"
S2
3.8"
2.9"
S3
2.9"
5"
5"
6.7"
Page 4
J1
strip 0.5"
Switch Pins
J2
3
2
1
8.0"
J3
8.5" strip 1.6
J4
J5
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