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Q119  

Sequential Controller

 

 

Aug 2014 

LED indicates 

active stage. 

Output Section 

for 24-stage mode. 

Glide speed. 

ADD knob offsets the 

output voltage 

up or down. 

Voltage output and 

Gate output. 

DONE OUTPUT 

Short pulse 

when cycle 

finishes. 

Start/Stop section. 
Manual or from  
gates signals. 
GO runs sequencer as 
long as button or signal 
remains high (on). 
 

Mode Control Section. 
8-stage or 24-stage. 
Output range contrl. 
Cycle Once or Continuous. 
Up or Up/Down motion. 

SET END 

Sets the last stage in 

the sequence. 

Oscillator Control Section. 

Speed control and internal/

external selection.   

Use square wave or gate. 

Manual Stepping. 

GATE WIDTH 

Controls duty cycle of 

All Gate Outputs. 

Voltage and 

Gate outputs for 

3-row mode. 

Summary of Contents for Q119

Page 1: ...me Individual gate outputs for each stage are not provided Triggering The sequential controller can be triggered started and stopped manually or by external triggers from oscillators envelope generators keyboard gates etc Several options exist including a level sensitive Go input that causes the sequencer to start on the rising edge of a signal and stop on the falling edge The Start and Stop signa...

Page 2: ...on Manual or from gates signals GO runs sequencer as long as button or signal remains high on Mode Control Section 8 stage or 24 stage Output range contrl Cycle Once or Continuous Up or Up Down motion SET END Sets the last stage in the sequence Oscillator Control Section Speed control and internal external selection Use square wave or gate Manual Stepping GATE WIDTH Controls duty cycle of All Gate...

Page 3: ...helpful when setting the stage controls A switch is provided to select an external oscillator source which can be driven by the Q106 Oscillator keyboard gate pulses etc It is possible to have each stage active for a variable amount of time by using an external Q106 Oscillator which is controlled by one of the bank outputs Length Selection The number of stages in a sequence is set by a front panel ...

Page 4: ...s Gate Width Control Adjusts the gate width from approximately 10 to 90 This affects all gate outputs Go Button Connector This is a level sensitive signal used to control the on off status of the sequencer Pressing and holding this button or applying a signal will cause the sequence to begin assuming other controls are set cor rectly and releasing it will stop the sequence For example to have the ...

Page 5: ...A gate output is provided when a stage is on Gate signals are 0 volts when off 5 volts when on Master Output Section The master output section is important when in 1x24 mode Master Output Connector The selected stage voltage is routed to the output connector When in 3x8 mode all 3 stage s voltages are added together mixed and presented at the master output connector The Add connector voltage and t...

Page 6: ...Turn each stage s knob and insure the voltage is changing accordingly During this test move the Output s switch to both positions and verify that the voltage range is obtainable 3 Attach a volt meter to the master output connector and verify that changing the Add control affects the voltage Also apply a voltage to the Add input and verify that it affects the master output 4 Select Internal oscilla...

Page 7: ...Q119 Sequential Controller Aug 2014 PC Board Layout ...

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