F
EATURES
Fig.1 Front Panel Features
Master Clock
The master clock consists of the TEMPO knob, the rotary switch labeled DIVISION, the three-way slide
switch with which you select the main sync source and the large black push button with the blue LED ring
around it on the front edge of the pedal. The button can either be used a Start/Stop button, as the tap
button and/or to re-sync the master clock in certain situations.
The TEMPO knob is only active in FREE mode and can be used to freely adjust the main tempo anywhere
from 40bpm to 240bpm (beats per minute). The main clock output labeled CLOCK on the patch bay sends
a square wave signal every beat with a duty cycle of 50%.
The DIVISION knob can be used to send a division or multiples of the master CLOCK output. This ranges
from 16th notes to once every full bar – in reference of the master clock beats. The DIVISION output also
sends a square wave signal and has a duty cycle of 50%.
The three way switch next to the DIVISION knob has three positions: TAP which allows you to use the
large black push button to tap in a certain tempo. Also this is the position for syncing the pedal to an
external analog clock through the EXT. CLOCK input. The FREE position can be used to freely set the main
tempo of the pedal with the TEMPO button. The EXT. position serves as your choice i.e. if you want the
pedal to sync to either MIDI or DIN Sync input.
LFO
The LFO (low frequency oscillator) consists of four basic features. With the two way switch on the right
you can choose between synced or free running mode. The RATE knob sets the speed of the LFO. If you
chose to have the LFO synced to the master clock you can select a division or multiples of the master
tempo to sync to. If the LFO is running in free mode you can set any speed between 0.25Hz and 260Hz.
The SHAPE knob determines the output wave of the LFO. You can choose between sine wave, triangle,
square, sample and hold, and a special waveform which is composed of a sine wave and digital noise.
The SYMMETRY knob is used to wave shape the LFO output. You can bend the symmetry of the wave from
10% to 90%. More information can be found in the LFO section of this manual.
Envelope Generator
The envelope generator of the RH301 provides the opportunity to have another CV source available for
syncing devices and creating in-time events. It is built much like its well-known ancestors the ADSR
envelopes. In addition to ATTACK, DECAY, SUSTAIN, RELEASE there is also a RANGE knob with which you
can change the length of each segment as well as the behaviour of the envelope. The RANGE knob not only
KOMA Elektronik RH301 – Rhythm Workstation / Utility Tool
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