User Guide

English

In addition to being able to transmit MIDI data, Circuit Mono Station is also equipped with

standard CV + GATE outputs which can send analogue note data to other compatible

equipment. The CV and GATE outputs are separate 3.5 mm jack sockets on the rear panel.

Note data is always present when a Pattern is playing, and the CV output will transmit the pitch

values of Oscillator 1. This means you can control the pitch of an external synth (e.g., Eurorack

module) with the Osc 1 Range, Coarse and Fine controls. The CV output is scaled at

1 V/octave and covers a range from 0 V to +7 V: MIDI Note #24 (C1) = 0 V;

MIDI Note #36 (C2) = +1 V, and so on. Linear scaling applies within octaves for the other notes.

The GATE output is a per-note pulse of +5 V amplitude, with a duration equal to the length of

the note and a rise time of 140 - 170 μs. The GATE pulse is output fractionally later than the CV

voltage to permit external equipment to stabilise its pitch before the note is turned on.

Circuit Mono Station also has an AUX CV output

, for connection to external synth modules.

AUX CV is one of the eight destinations of the Modulation Matrix (see page 82), and you

can assign any of the Matrix sources to it. The voltage range is -5 V to +5 V. Be aware of the

necessity to carefully adjust the Depth control

if using multiple modulation sources, as the

matrix’s additive nature may introduce clipping.

Analogue CLOCK IN and CLOCK OUT connectors are also provided on Circuit Mono Station.

See “Analogue Clock Rates” on page 87 for full details.

Synthesiser Block Diagram

Each section of the synthesiser is now discussed in detail: the diagram below indicates the

general signal ow through the various processing elements.

Osc 1

Pre-drive

Main Mix

Osc 2/Noise Submix

12 dB/Oct 12 dB/Oct

Filter

Bypass

Mix

Distort 2

Distort 1

VCA

Mix

VCA

Gate

Volume

Output

Osc 2

Sub

Noise

Ring Mod

Audio