Cirklon Sequencer User Manual
8. CVIO and Drum Trig Configuration
The optional CVIO expansion gives you 16 high-resolution control voltage and 8 gate outputs
via a 25-pin “analogue bus” connector on the rear panel.
A further choice of external break-out box (BOB) connected via a multicore cable gives access
to the outputs on 3.5mm or quarter-inch sockets, without concentrating a mass of cables
behind the sequencer itself.
The same pattern types used for MIDI instruments are also used for controlling CV-attached
instruments.
Note, controller and pitch-bend messages routed to a channel of the “CV” MIDI port control
the CV and gate outputs directly through a high-speed internal connection.
The 16 channel range supports independent control of a number of instruments by grouping
their CV and gate outputs on a unique channel.
Each CV output can generate a voltage proportional to the note, velocity or controller values,
or a variable combination of all three.
You can think of the CVIO as a MIDI to CV convertor built into Cirklon, without the
bandwidth limit of a serial MIDI connection.
The drum trigger (or drum mux) module is a further option that provides multiple trigger
pulse and CV outputs for driving analogue percussion synths or drum machines.
Cirklon’s SYNC output is used in an alternate mode to transmit drum trigger data.
The drum mux module receives and outputs the triggers to 16 pairs of 3.5mm sockets.
It also features a DIN SYNC output, so the original SYNC capability can be retained.
Multiple drum trigger modules can be attached in parallel, up to a maximum of 48 separate
trigger outputs.
As with the CVIO, the trigger output is driven by note output to a chosen channel on the CV
port.
CVIO Config
Setting up the CV and gate outputs for use with an instrument is a two-step process.
The first step is to create an instrument definition to route the output of a track to a channel
on the CV port.
The second step is to configure one or more CV outputs to respond to messages on the chosen
channel for the desired control of pitch, gate, etc.
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