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Klavis

 

 

Logica 

XT 

user manual V1.0 

Page 

8

 of 

11

 

 

Editing 

Turning the pot, the LED column indicates the duration as follows, LED off = 1ms, then one LED at 
a time corresponding to values 2, 3, 4, 5, 6, 7, and 8ms; turning further brings a bar-graph that 
reflects values continuously adjustable from 10ms to 10 second. 

The default value is 4ms which should suffice for typical Gate to Trigger conversion. Longer 
triggers could be used for punchy envelopes (use an ADSR set to AR and acting as A, hold, D).   

Trigger to gate is realized with longer durations whatever the length of the incoming signals. 

1, 2, 3 – Sequence validation 

In this function the numbering of the inputs is important. The output will go on only after the 
inputs have seen triggers or gates in the proper chronology from input 1 to input 3. 

Any time the sequence is broken (e.g. input 3 was activated immediately after input 1) the 
validation is reset and should start again from the beginning. 

After the output successfully goes on, any further signal to any input will shut it off (possibly 
restarting a new sequence if that signal came on input 1). 

Signals may overlap; only their rising edge is considered for proper validation. 

The manual button inverts the current state of the output. 

Coin 

This function offers 3 heads or tails random generators with variable odds depending on the 
input used. When won, the out goes on for the duration of the input signal. 

When more than one input is used, winning signals are combined (ored) on the output. 

 

A signal on input 1 has a fifty-fifty chance of passing through. 

 

A signal on input 2 has one in four chance of passing through. 

 

A signal on input 3 has one in eight chance of passing through. 

The manual button creates a On that is mixed (ored) with the rest. 

Set/Reset + Clock – S/R+C 

The labeling of the inputs is in the black boxes above the jacks (Clock, Set, and Reset). 

The function implements a typical flip-flop circuit. In its simplest use, feed any cyclic signal to the 
Clock input and you get a division by two on the main output. 

The set and reset inputs can respectively force and clear the output. A pulse at the clock inverts 
the current result. The manual button is an additional clock option. 
Without clocking, only using Set and Reset gives you an S/R latch whose result remains stable 
until the other input goes high.  

Only the rising edges of the incoming signals are taken into account. 

Summary of Contents for Logica XT

Page 1: ...D S H 1 High Off Gt Tr S R C Features at a glance 14 modes of operation o 6 basic logic functions o 2 forced states o 6 advanced logic functions The Gater adds up multiple gate signals while maintaini...

Page 2: ...ing up the current draw of all modules mA separately for each of 5V 12V and 12V rails If any of these 3 sums exceeds the available current of your supply for that voltage do not connect the module to...

Page 3: ...With simple logic functions these all work in the same way Any signal can be brought to any jack Normalization With simple logic unused jacks automatically get the necessary default value so that it i...

Page 4: ...active column Manual input button This button acts as a fourth input The default status of the button depends on the logic function selected Where it makes sense this default status can be changed by...

Page 5: ...ccepted and within that half only levels high enough will produce a logic one on the output So changing the amplitude or the voltage offset of the saw will change the width of the resulting pulse saw...

Page 6: ...ate sounds much different from cascading multiple 2 input Xor the div 2 out can even provide melodies out of subtly detuned static pitches Here is the detail of the Xor Xnor function Input jacks Out j...

Page 7: ...ines all inputs as an Or function does but also retriggers the output every time a new gate starts while one or more are already active All inputs work the same the button brings a 4th gate signal The...

Page 8: ...input 1 Signals may overlap only their rising edge is considered for proper validation The manual button inverts the current state of the output Coin This function offers 3 heads or tails random gener...

Page 9: ...l be delayed Turning the pot within its first half the LED column indicates the delay as follows LED off 1 input is copied to out on the next clock then up one LED at a time corresponding to 2 3 4 6 8...

Page 10: ...ne Below lowest Off Off On Input jacks are disabled Button inverts Summary Advanced logic White LED Function Out jack Details Top On On Input jacks are disabled Button inverts 1 2 Gater On if at least...

Page 11: ...and outputs can withstand signals between 12V and 12V without harm Jack Effective voltage range received or generated CV control input 5V to 5V All outputs 0 or 5V logic levels Input low to high chan...

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