R60 selftuning MIDI/CV interface user`s manual
Contents
1. IMETASONIX R 60 self tuning MIDI CV interface user s manual Warning this device is intended for use only by experienced music and audio professionals It is nof intended for amateur use Copyright 2010 Metasonix All rights reserved READ THIS CAREFULLY DAMMIT 1 1 1 RETAIN INSTRUCTIONS The safety and operating instructions should be retained for future reference HEED WARNINGS All warnings on the R 60 and in the operating instructions should be adhered to FOLLOW INSTRUCTIONS All operating instructions should be followed WATER AND MOISTURE The R 60 should not be used near water e g near a bathtub washbowIl kitchen sink laundry tub in a wet basement near a swimming pool etc Care should be taken so that liquids are not spilled onto or near the enclosure VENTILATION AND COOLING The R 60 MUST be situated so that its location or position does not interfere with convective cooling The R 60 MUST NOT be used on a bed sofa rug or similar surface which may prevent proper cooling It is NOT a toy HEAT The R 60 MUST be situated away from heat sources such as radiators heat registers stoves or other devices including power amps that produce heat POWER SOURCE The R 60 must be connected to a power supply ONLY of the type described in the operating manual or as marked on the R 60 It uses 5v at 100 mA plus 12v and 12v at 10 mA The power input is a standard Doepfer m 16 pin IDC type with the 12v pins2. R 60 is required though a special adapter power cable might need to be fabricated with a 5v regulator added to reduce the 15v to 5v or an additional 5v regulated supply This is an advanced mod and requires the skills of an experienced technician If the tuning procedure was interrupted or the R 60 s memory was otherwise corrupted a hard reset may be performed Note that this is a last resort only if the R 60 does not respond to MIDI keydown signals try cycling its power first Hard reset is simple while holding down the Learn button power up the R 60 then release Learn The R 60 will set itself to its new default state a fixed tuning table that should be suitable for a new R 54 VCO will be loaded and used and the MIDI channel will be set to 1 The R 60 uses a single chip Atmel ATMEGA88 microprocessor Pitch of the VCO connected to it is sensed via a 0 5v input and is processed with an amplifier having a gain of 10 plus a clipper using a zener diode The CV output is buffered and the Gate output is 0 to 5 v TTL compatible MIDI IMPLEMENTATION The R 60 responds to a number of CC MIDI codes after tuning is completed Note that the MIDI channel used to send these codes must be the same one previously set as above or channel 1 if the R 60 is new or has undergone a hard reset Messages responded to include 1 MIDI Panic forces note off 2 Note On 3 Note Off 4 Sustain Pedal suppresses Note Off when sent 5 Pitc
3. and conditions apply 1 Warranty period is for ONE YEAR from date of purchase with proof of purchase submitted Warranty covers electrical failure of vacuum tubes and gas filled tubes except in cases explained in 3 below 2 Operating instructions must be followed This device was intended ONLY for use by AUDIO AND MUSIC PROFESSIONALS IT IS NOT INTENDED FOR USE BY ORDINARY CONSUMERS Product must not have been damaged as a result of defacement misuse abuse neglect accident destruction or alteration of the serial number improper electrical voltages or currents repair alteration or maintenance by any person or party other than our own service facility or an authorized service center use or installation of non Metasonix replacement parts in the product or the use of this product outside of the U S A or Canada except as a product distributed by an authorized Metasonix dealer or modification of the product in any way or incorporation of the product into any other products or damage to the product caused by accident fire floods lightning or acts of God or any use violative of instructions furnished by Metasonix 3 Obligations of Metasonix shall be limited to repair or replacement with same or similar unit at our option To obtain repairs under this warranty present the product and proof of purchase e g bill or invoice to the authorized Metasonix service center transportation charges prepaid When returning the product for re
4. product lies with the user Products manufactured and or sold by METASONIX are not authorized for use as critical components in devices used in life support and other systems whose failure or performance could result in compromised safety or danger to life or property NOTE All sales are FINAL especially custom designs Only a Metasonix authorized dealer is permitted to return products to Metasonix for a refund or exchange What the R 60 does Tunes from C1 32 7 Hz to C5 1056 Hz typical Maximum tuning range will vary with the VCO and other system details Expect about 2 to 4 octaves with your Metasonix oscillators The R 60 does not care if the VCO is Hz V or V octave if the VCO waveform is stable the R 60 will attempt to set its internal tuning table to equal tempering over the maximum possible range There is a short delay between receiving the MIDI note message and setting the output CVx The pitch change time of the connected VCO differs for every VCO and can range from 1 ms to 20 ms The delay is due to the VCO s inherent pitch chaznge delay and is not due to the R 60 which responds in less than 1 ms The R 60 is monophonic on the last MIDI channel set Channel 1 is the default on a new R 60 or after a hard reset Stores the last tuned CV scaling table in non volatile memory 10 note buffer memory 5v Gate out that follows MIDI keydown keyup messages The R60 has a smart learn mode for a new MIDI cha
5. speed It would be wise to allow at least 45 seconds although some VCOs will finish the procedure faster 6 After the R 60 has finished tuning the LED will blink with one of the listed blink codes 7 Press and hold R 60 Learn button for 2 seconds LED will stop displaying the listed blink code and should now light only when you send a note on message from your MIDI keyboard The LED will be off when no key is pressed and on when a key is pressed It s then displaying the Gate voltage Note The lowest tuned note will automatically be assigned to the C1 key of your controller ONLY if you do a MIDI reassign as shown above Adjust the Octave Transpose or Range settings of your MIDI controller as needed for proper range control of the R 60 and VCO Recommended settings for use of a Metasonix R 54 with the R 60 are shown below Note that individual R 54s may require slightly different settings to obtain good results so trial and error is recommended It is CRITICAL that the signal fed to the R 60 is as clean unvarying and repeatable as possible Noisy power supplies and dirty connectors can cause all kinds of tuning problems WAVESHAPE MASTER FILTER OVERDRIVE OUTPUT TUNING RESONANCE LEVEL LEVEL gt 00 dB 20 3 LED Blink Codes After a tuning cycle the R 60 will display the following blink codes on its LED until the Learn button is pressed and held for 2 seconds Sy ese gt eee a etek repeat No input signal det
6. ected ESES ARSE repeat Input signal unreliable 2 3 repeat Some readings were successfully taken but autotune terminated early repeat Autotune completed successfully Each dash is 200ms long Each sequence is followed by a 3 second pause with the LED off The sequence and pause is repeated until the next press and hold of the learn button for 2 seconds at which stage the R 60 returns to normal operation mode Note sometimes the R 60 may show the autotune terminated early code despite having successfully finished a full tuning cycle Press the Learn button and try playing the VCO via the R 60 and MIDI keyboard to determine if a usable tuning range was obtained You might need to use the octave transpose or low key controls on your MIDI keyboard to find the usable range of the R 60 Because there is no industry standard for where MIDI note 24 falls on MIDI keyboards we can t predict where the usable range will be Once tuned the R 60 s LED will light in time with your keyboard gate If you are pressing keys and not hearing anything look at the LED and strike a key If the LED blinks when you strike a key then you know that the R 60 is receiving MIDI data Check the oscillator settings and output level and try the tuning procedure again INSTALLATION AND MAINTENANCE Install the R 60 into any Euro rack modular synthesizer cabinet using M3 machine screws There is no need for the R 60 fr
7. h Bend default in a new R 60 is a range of about a fifth which varies with octave being played 6 CC86 sets the pitch bend range 4 ranges are possible 7 Modulation Wheel sets the depth of the R 60 s in built LFO adds it to the CV output 8 CC77 also sets the depth of the in built LFO per standard MIDI spec 9 CC76 sets the modulation LFO rate from 30 seconds cycle to 30Hz 10 CC85 sets the LFO type 4 types Saw Square Triangle default and Sharkstooth rounded sawtooth If you are confused or have ANY technical questions feel free to contact us Please DO NOT ASSUME and if you are not an experienced technician DO NOT MODIFY THE CIRCUIT IN ANY WAY 870 S MAIN STREET 109 METASONIX LAKEPORT CA 95453 USA 707 263 5343 synth metasonix com www metasonix com
8. nnel Just press the Learn button on the R 60 briefly then any key on the keyboard controller That received MIDI keydown message sets the R 60 s operating MIDI channel which is stored permanently until a hard reset is peformed Sending any MIDI message on the desired channel will set that MIDI channel not just keydown Also if you send a MIDI keydown corresponding to a note value of C the R 60 will set its internal lowest C note to that C instead of the default lowest C MIDI 24 Built in retrigger allows trills SETUP AND TUNING PROCEDURE read all parts below before attempting to use or retune 1 Plug MIDI out of your keyboard controller of choice into the R 60 MIDI input 2 Power up your Euro modular rig If the R 60 does not respond to MIDI keydown after power up try cycling the power off and on again Each R 60 ships as new with a default tuning table that is often usable with a Metasonix R 54 VCO without performing the tuning procedure So try the R 54 and R 60 together and see if you can adjust the R 54 for a usable equal tempered tuning before trying to retune If you must retune or are using a V octave VCO set the R 54 with the recommended settings shown below For other VCOs use the square wave or pulse wave output with no waveform or PWM modulation and output level at maximum Some VCO outputs might need to be amplified with a preamp to obtain good results The R 60 wants to see a clean rectangular wavefo
9. on the BOTTOM The pins above the 5v pin row are not used and not connected Note It is CRITICAL that the power supply be clean and free of noise Homebrew power supplies dirty connectors or other issues may cause the R 60 to improperly tune a given VCO of whatever type VCOs vary greatly in design response and waveform output For these reasons Metasonix cannot warranty the accuracy reliability or repeatability of the R 60 s operation Such accuracy reliability or repeatability is heavily dependent on the VCO or synthesizer used with the R 60 CLEANING The R 60 front panel should only be cleaned with a soft cloth moistened with water Unplug the power supply before attempting to clean It is NOT intended for use in wet or moist environments NON USE PERIODS The R 60 should be shut off when left unused for a long period of time DAMAGE REQUIRING SERVICE The R 60 should be serviced by qualified service personnel when The power supply has been damaged The R 60 has been dropped physically damaged or subjected to force Liquid has been spilled onto the R 60 or it has been exposed to rain The R 60 does not appear to operate normally or exhibits a marked change in performance SERVICING The user should not attempt to service the R 60 All servicing should be referred to qualified service personnel METASONIX LIMITED WARRANTY and standard legal disclaimer Thank you for purchasing this Metasonix product The following terms
10. ont panel to be grounded to the cabinet rails as the power cable provides grounding Powering the R 60 requires a power supply producing 5 volts at 100 mA AND 12 volts DC at 10 milliamps You MUST assure the power supply provides 5v on the proper power bus connector pins and is able to handle the R 60 load plus the load of other modules This power supply MUST BE CLEAN AND STABLE or poor results will be obtained 2 tno used eo 5 R 60 power 12v or 15v connector pinout ee o o R Ground common 12 or 15v The R 60 MUST have 5v DC power Many Euro synthesizer cabinets do not have 5v available requiring the addition of an optional 5v power supply If the cabinet has only 10 pin bus connectors a 16 pin Euro bus will have to be installed to use the R 60 The Doepfer A 100AD5 add on regulator may be added to a bus to provide 5v for the R 60 Some modern cabinets such as the ones made by ModularWorld already have 5v regulators installed on their busses If the regulator chip does not have an attached heatsink as the ModularWorld cases are currently equipped we recommend adding a heatsink to prevent overheating of the regulator chip Note although the R 60 does not have space for an MOTM Frac or Dotcom power connector for 15 volt supply rails the R 60 will work fine on 15v rails rather than 12v as well as the mandatory 5v power No modification of the
11. pair please pack it very carefully preferably using the original packaging materials Please also include an explanatory note IMPORTANT To save yourself unnecessary cost and inconvenience please check carefully that you have fully read and followed the instructions in this instruction manual This warranty is in lieu of all other expressed warranties obligations or liabilities ANY IMPLIED WARRANTIES OBLIGATIONS OR LIABILITIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FORA PARTICULAR PURPOSE SHALL BE LIMITED IN DURATION TO THE DURATION OF THIS WRITTEN LIMITED WARRANTY Some states do not allow limitations on how long an implied warranty lasts so the above limitations may not apply to you INNO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY EXPRESS OR IMPLIED WHATSOEVER Some states do not allow the exclusion or limitation of special incidental or consequential damages so the above limitation may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state METASONIX shall not be held liable for any incidental consequential or direct damages or expenses associated with the use or misuse of its products METASONIX does not guarantee that any of its products are designed for any particular use or purpose The entire risk of suitability and performance of this
12. rm at its input with at least 1 v p p signal strength Note that the maximum possible range the R 60 will control is limited to approximately 0 to 4 5v so the range is limited by the CV response of the VCO within that limitation Different VCOs can give different tuning results with the R 60 Patience is recommended 3 Patch the Audio Output of the R 54 into a mult Feed one cable of that multed signal into a mixer or VCA whatever you want to monitor the tuning procedure with and one cable into the R 60 Audio Input Patch the R 60 CV Output into the R 54 Pitch CV input The R 60 Gate output can be patched into the gate input of a an envelope or directly to the CV input of a VCA Do whatever you want with it The gate output is Ov low 5v high and able to drive TTL inputs To monitor amp optional From MIDI controller CV input Audio out 4 Press and hold the Learn button for 3 seconds The LED will light solidly indicating that the unit has set its CV output to OV and is ready for tuning Now adjust the VCO s pitch to 32Hz or to a reasonably low pitch This will be preset as the R 60 s lowest operating pitch occurring at MIDI note 24 5 Press R 60 Learn button again briefly release when you hear the R60 start tuning itself The VCO pitch should start at about 32 Hz or the lowest pitch you set the VCO to in step 5 and will start incrementing the CV and thus the VCO pitch The time needed will depend on the VCO s response
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