Mode Switch - 4ms Company QCD Expander User Manual

Eurorack module
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Mode Switch

Delayed Trigger Mode:
Top trace (blue) is master clock
(shown as a trigger for emphasis).
Bottom trace (red) is Delayed Trigger.
PW/Trig Delay is at 50%.
Inverted Gate Mode:
Top trace (blue) is main QCD OUT.
Bottom trace (red) is INV OUT.
PW/Trig Delay being swept from 0%
to about 75%.
Inverted Gate Mode:
Top trace (blue) is main QCD OUT.
Bottom trace (red) is Delayed Trigger.
PW/Trig Delay is set to 25%.
Each channel has a mode switch located above the Div/Mult CV attenuator.
The Mode Switch only effects the INV OUT jack. It has no effect on the main QCD
output. The Mode Switch interacts with the Pulse Width/Trig Delay setting.
The switch has three positions: left, center, and right.
Left: Delayed Trigger mode
Center: Inverted Gate mode
Right: Shuffle Mode (delayed + original triggers)
Mode Switch: Left
Delayed Trigger Mode
Gate PW/Trig Delay sets delay time (percentage)
The INV OUT jack will output a 5ms trigger delayed by a percentage (fraction) of the
beat's period. Delay time is set by the Gate PW/Trig Delay knob and CV. For
example, with the knob at 50% and no CV, the delayed trigger will happen after 50%
of the period has passed (on the up-beat). At 25%, the trigger will happen 25%
through the beat period.
Another way of looking at this mode is that a trigger will fire every time the main
QCD output falls from high to low (falling edge). Since pulse width is defined as the
amount of time between rising and falling edges, controlling the Pulse Width
changes the amount of delay between the rising edge and the (delayed) trigger.
Mode Switch: Center
Inverted Gate Mode
Gate PW/Trig Delay sets pulse width
The INV OUT jack will be an inverted copy of the main QCD output. The INV OUT
always ranges from 0V to +5V (positive voltage), so technically it's an inverted and
shifted gate output.
What this means is when the main QCD output goes high from 0V to +5V, the INV
OUT goes low from +5V to 0V, and vice-versa.
Gate PW/Trig Delay always controls the pulse width of the main QCD OUT, and so
in Inverted Gate Mode, it inversely controls the pulse width of the INV OUT. Thus, if
Gate PW is set to 75%, the main QCD OUT will have a pulse width of 75%, and the
INV OUT will have a pulse width of 25%.
The minimum pulse width is 5ms. The maximum pulse width is the full period minus
5ms.
Mode Switch: Right
Swing Mode
Gate PW/Trig Delay sets swing amount
The INV OUT jack will output the same trigger as in Delayed Trigger Mode plus an
additional non-delayed trigger. This creates a shuffle or swing pattern. Another way
of looking at this mode is that it fires a trigger when the main QCD output rises and
another when it falls. Note that this creates twice as many triggers as the other two
modes. Essentially, the tempo is doubled as well as swung. Tip: if you don't want the
tempo to be doubled, use the Div/Mult control to halve it!
Like Delayed Trigger Mode, the amount of delay time is controlled by the Gate
PW/Trig Delay. Mixed with the original trigger, this creates a shuffle/swing rhythm. If
you're familiar with the 4ms SCM, you may recognize the Gate PW/Trig Delay knob
is similar to the "Slip" knob.

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