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Range: 0 to +5V rectangular wave, rapid, with varying duty cycle.
#5 - REGISTER OUT:
Source: Wiper of Register Rotary Switch (SW1) on Panel Board
Destination: Signal Input of Waveshaping circuit
Range: Same as #2 - #4.
#6 - WAVEFORM POT:
Source: Wiper of WAVEFORM pot (P5) on Panel Board.
Destination: Biasing input of Waveshaping circuit.
Range: 0 to as high as +4.5V, depending on magnitude of Pitch CV.
#7 - BRIGHTNESS POT:
Source: Wiper of BRIGHTNESS pot (P4) on Panel Board.
Destination: Gain Control input of waveshaping circuit.
Range: 0 to +5V
#8 - FILTER POT:
Source Wiper of FILTER pot (P3 on Panel Board.
Destination: Control input of filter circuit.
Range: 0. to +5V
#9 - TUNER JACK:
Source: Filtered High Register Audio (on Volume Board)
Destination: Tuner jack.
Range: 1V peak-to-peak
#10, #18, #26, #28, #32, #34 - GROUND:
System ground.
#11, #12, #13 - TIMBRE SELECT BITS:
Source: TIMBRE SELECT rotary switch (SW2) on panel board.
Destination: Control inputs of U11, U12, and U13 on Pitch Board.
Range: Either +5V (through 100K resistors) or ground.
#14 PITCH ANTENNA RESPONSE:
Source: Wiper of Pitch Antenna Response pot on front panel.
Destination: Gain Control input of U4-A on Panel Board (provides
variable coupling between oscillators)
Range: 0 to -12V DC
#15 TOP OF WAVE POT:
Source: Emitter of Q14 on Pitch Board
Destinations: Top of Waveform Pot; R50, 51, 52, 54, and 55 on Pitch
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Board
Range about _2.8 V to +4.5V, depending on magnitude of Pitch CV
#16 - VOLUME TUNING POT:
Source: Wiper of VOLUME pot (P2) on Panel Board
Destination: Volume Oscillator tuning circuit
Range: 0 to -12V DC
#17 - VOLUME ANTENNA RESPONSE:
Source: Wiper of Volume Antenna Response pot on front panel.
Destination: Volume CV Processor.
Range: 0 to +5V
#19 - HEDADPHONES OUT:
Source: U6-12 (Headphones VCA) on Volume Board
Destination: Inputs of U1 on Panel Board
Range: 10V P-P Audio
#20 - HEADPHONES CV:
Source: Wiper of Headphone Volume pot on front panel
Destination: R25 on Volume Board
Range: 0 to -12V DC
#21 - VOLUME CV:
Source: U1-7 (Output of Volume CV Processor)
Destinations: Gain Control input of Audio Out VCA; Gain Control Input
of Headphone Out CV; VOLUME CV jack; control input of filter.
Range: -0.3 to +5.5; 0V = silence; +5.0V = maximum volume
#22 - PITCH CV:
Source: Output of Pitch-to-CV converter
Destinations: PITCH CV jack; control input of filter; R58 on Pitch
Board.
Range: -3V to +4V; one volt per octave; 0V = 256 Hz (middle C)
#23 - AUDIO TO VCAs:
Source U9-9 on Pitch Board (Output of Filter)
Destination: Audio inputs of Main Audio VCA and Headphone VCA
Range: 4V Peak to Peak audio.
#24 - AUDIO OUT GND:
Source: Junction of R63 and R66 on Volume Board
Destination: Ring Terminal of Audio Out jack.
Range: close to 0V
