DOEPFER System A-100 Midi-to-CV/Gate A-190
Contents
1. CV4 velocity off Program Change 2 Program Change 3 CV3 volume velocit CV4 Ctr X CV4 velocity on Retrigger off Program Change 4 Program Change 5 CV4 Ctr X velocit Retrigger on Trigger polarity normal Program Change 6 Program Change 7 Trigger polarity invertet CV3 velocity mode 127 steps Program Change 8 Program Change 11 velocity resolution 0 127 CV3 velocity mode 2 steps CV4 velocity mode 127 steps Program Change 12 Program Change 13 velocity 2 steps velocity resolution 0 127 CV4 velocity mode 2 steps Key assign mode highest note Program Change 14 Program Change 15 velocity 2 steps Key assign mode last note Program Change 16 Key assign mode reference note Program Change 17 Key assign mode stack note Characteristics V Octave Program Change 18 Program Change 19 Characteristics HZ V Controller for CV4 Program Change 20 any Midi Controller except Bank Controller 0 32 Midi to CV Gate A 190 2 Notes 1 Midi channel reference for CV1 0V In case of an incoming note event in the learn mode the note number and the channel of the event are taken over as the new reference note and Midi channel The reference note is the Midi note number that belongs to OV CV1 output In practice you simply enter the learn mode and press the key on your Midi keyboard that should belong to OV CV1 Midi note eve2. i e to call up the factory settings For this the button has to be operated during power on of the A 100 system Then the system has to be turned off and on again with about 10 seconds in the off state These are the factory settings Midi channel 1 reference note 36 trigger polarity positive retrigger off CV3 volume controller 7 CV4 modulation controller 1 CV1 characteristics V octave key assign mode highest note System A 100 Midi to CV Gate A 190 2 Glide This is the glide control for the CV output Note this function is even called Portamento or Slew Limiting In the fully CCW position no glide appears i e the control voltage jumps when a new Midi note number is recognized To obtain the glide function the control has to be turned clockwise until the desired glide time is reached Gate Learn The LED light emitting diode displays the Gate function in the normal play mode The LED can be used to control the correct function of the module even without having other modules connected to A 190 2 The LED is also used as Learn display after the Learn button has been operated Details in chapter 5 Midi to CV Gate A 190 2 5 Operation To adjust the A 190 2 parameters one has to enter the Learn mode and send the regarding Midi messages to the module from the Midi transmitter while the A 190 2 is in learn mode To enter the learn mode one has to press the learn button and hold it pressed do
3. 100 are converted into a fixed velocity value 64 6 CV1 Key assign modes These program change messages adjust the type of assign modes for CV1 If highest note is selected the highest key pressed on the midi keyboard is used to generate CV1 if more than one key is operated In the ast note mode always the last note chronological is taken for CV1 The following modes are only useful if two or more A 190 2 are daisy chained via Midi Out In by means of the internal jumpers see attachment Reference note means that only the reference note is accepted This feature is useful if you want to trigger different devices on the same Midi channel using two or more A 190 2 In this case you have to set the reference notes for the A 190 2 s to different values Stack note means that the A 190 2 is filtering out the note event that is used by the A 190 2 to generate Gate and CV1 The note event in question is not transmitted to the Midi output All other note events are passed on Stack mode is used to control more than one synthesizer voice on one Midi channel and enables polyphonic control Midi to CV Gate A 190 2 7 CV Characteristics With programm change 19 and 20 one can select between V Octave and Hz V characteristics for the CV1 output Within the A 100 this features is not required because all VCOs and VCFs use V Oct only Only if the A 190 2 is used to control other equipment this function might be useful V Octave is used by m
4. Otherwise a short circuit is made between the outputs of the CV transmitters CV output Pitch Bend CV2 This socket outputs a voltage that is controlled by valid Midi pitch bend messages i e on the right Midi channel The voltage range is about 2 5V Midi data 0 OV Midi data 64 2 5V Midi data 127 Usually this output is connected to the CV input s of the voltage controlled oscillators VCOs that are equipped with attenuators The attenuators are used to adjust the desired pitch range If more than one VCO is used a multiple module is required to distribute the CV coming from the A 190 2 In this case the usage of the precision adder A 185 2 is a more versatile solution see chapter 6 user examples The CV output Note of the A 190 2 is patched to one of the CV inputs of the A 185 2 without attenuator The CV output Pitch Bend of the A 190 2 is patched to the CV input of the A 185 2 with attenuator That way the pitch bend range is adjusted with one common control only for all VCOs The CV bus jumper of the A 190 2 has to be removed in this application because the A 185 2 is used as CV source for the bus 4 System A 100 QUEPFER 6 CV output Velocity Volume CV3 This socket outputs a voltage that is controlled by valid Midi volume or velocity volume messages The voltage range is 0 V velocity volume data 0 5V velocity volume data 127 The module can be adjusted for volume control only or fo
5. to CV Gate A 190 2 short circuit is made between the outputs of the Gate transmitters CV output Note CV1 This socket outputs a voltage that is controlled by the Midi note number of a valid note on message i e on the right Midi channel and in the note range between the reference note and 5 octaves beyond The voltage range is 0 5V and the scale is 1V Octave i e 5 octaves range OV corresponds to the reference note see chapter 5 5V to the note that is 5 octaves beyond the reference note CV1 is affected by the glide control see chapter 4 A trimming potentiomer can be used to re adjust the 1V octave scaling if necessary see attachment for details Usually this CV output is connected to the 1V Oct compatible CV input s of the voltage controlled oscillator s VCOs of the patch The output is buffered i e it can be used to control even 2 or more CV inputs of VCOs without the need of an additional buffer The A 190 2 has a jumper on board the allows to connect the CV output Note of the module to CV line of the A 100 bus see appendix Midi to CV Gate A 190 2 Important note The module comes with an installed CV jumper i e one has to remove the jumper if e g an A 190 A 185 1 or A 185 2 is already connected to the CV line of the same bus board If the A 190 2 should be used as CV source for the A 100 bus the CV connection of any other CV source e g A 190 1 A 185 1 or A 185 2 has to be removed
6. QOEPFER Midi In Gate Glide Gate CV Note Learn CV Pitch CV V V CV Ctr Fig 1 Schematics System A 100 Midi to CV Gate A 190 2 1 Introduction Module A 190 2 is an economically priced alternative to the Midi CV SYNC interface A 190 1 It can be used in all cases where the additional features of the A 190 1 are not required e g clock output start stop output A 190 2 is the modular version of the MCV4 interface These are the most important features of the A 190 2 Midi to CV Gate interface Gate output 0 5V CV 1 voltage derived from incoming Midi note messages 0 5V 5 octaves the glide control affects this CV output CV2 voltage derived from incoming Midi pitch bend messages 2 5 2 5V CV3 voltage derived from the multiplication of incoming Midi volume messages and the velocity data of the note messages 0 5V CV4 voltage derived from a freely adjustable Midi control change message 0 5V Midi channel reference note for OV CV1 and the midi control change number for CV4 are adjusted by means of the learn button Glide control portamento slew limiter function for CV1 By means of two jumpers CV1 and Gate can be connected to the corresponding lines of the A 100 bus Midi to CV Gate A 190 2 System A 100 QOEPFER 2 Overview Controls Displays Learn Learn momentary switch Midi CV G Intert Glide Glide Control for CV output Note MIDI In Gate Ga
7. e i OG xe OO OOEFFER OOEPFER OUEPFER OUEPFER In this application the A 185 2 is used to add up several voltages that are used to control the pitch of all VCOs that are connected to the same bus board as the A 185 2 e CV Note is connected to one of the inputs of the A 185 2 without attenuator e CV Pitch Bend is connected to the input of the A 185 2 with attenuator to be able to adjust the pitch bend width e CV Ctr is connected to the control input of a VCA e g A 130 and controls the level of the triangle signal of the LFO A 145 The output of the VCA is connected to one of the inputs of the A 185 2 without attenuator That way the Midi controller e g modulation control change 1 is used for the modulation depth If the A 145 is replaced by a VCLFO A 147 the CV Volume of the A 190 2 may be used to control even the modulation frequency of the LFO e The CV output of a sequencer A 155 can be connected to the remaining free input of the A 185 2 Then the CV Note of the A 190 2 is used to transpose the sequence of the A 155 via Midi Attention In this application the bus CV jumper of the A 190 2 has to be removed and the bus CV jumper of the A 185 2 has to be installed Otherwise a short circuit between both CV outputs is made 12 QOOEPFER System A 100 Midi to CV Gate A 190 2 Appendix e Function of the jumpers pin headers e Position of the trimming potentiometers for CV1 scale for da
8. isy chaining of several A 190 2 Midi out to following Midi in from A 190 2 preceeding A 190 2 BU6 MAB5SH 1 4 2 5 3 R16 100 co Zn RI1 220 ICT 87C52PLCC 100n C12 Jumper Jumper Trimming potentiometer Gate Bus CV gt Bus for CV scale 13
9. meter changes have to be stored permanently the learn mode has to be used All program change messages must be sent on the A 190 2 Midi channel see remark 1 QOOEPFER System A 100 Midi to CV Gate A 190 2 6 User Examples 6 1 Simple synthesizer standard patch with one envelope generator A 190 2 A 110 VCO A 124 VCFS A 132 3 DVCA A 140 ADSR STANDARD VCO Midi CV G Inter lin exp VCA MIDI In cv gt D tab 7 i 6 NGA N 9 1 1 16 10 Gai NG a E ae in Retno x Audio Out OOEPFER OOEPFE This is a simple synthesizer patch with one VCO A 110 that is processed by a VCF A 124 Wasp filter in this example but any other filter may be used and two VCAs Dual VCA A 132 3 The first VCA is controlled by the envelope of the ADSR A 140 The second VCA is controlled by the Velocity Volume CV of the A 190 2 and used for a Midi controlled overall loudness The VCF frequency is controlled by both the A 140 envelope width adjustable level and the Midi generated Controller CV fixed level The dashed blue connections CV1 A 190 2 gt CV1 In A 110 and Gate A 190 2 Gate In A 140 are not required if the bus jumpers of the modules A 110 A 140 and A 190 2 are installed 11 Midi to CV Gate A 190 2 System A 100 QOEPFER 6 2 Application of A 190 2 and Precision Adder A 185 2 A 130 VCA A 145 LFO LINEAR VCA of Ci H Frequ Rang
10. nts below the reference note or more than 5 octaves above the reference note are ignored remember the CV1 voltage range is 0 5V The factory default settings of reference note and Midi channel are 36 C and 1 2 6 For the setting of these parameters Midi Program Change messages coming from your Midi device are used Normally you will have to press the program change keys on your Midi keyboard or synthesizer or software while beeing in the learn mode Important note Pay attention that some manufacturers count the Midi program change numbers from 1 128 others from 0 127 In this manual the counting 1 128 is used Please look into the user s manual of your Midi 8 System A 100 QOEPFER device which type of counting is used If the counting type 0 127 is used one has to subtract 1 from the program change numbers in the table above For some devices especially software sequencers the type of program change numbering can be selected In this case you should use the 1 128 range to agree with the numbers in the table above The program change messages must be sent on the A 190 2 Midi channel see note 1 2 Velocity on off These program change messages are used to select whether the note on velocity affects the control voltages CV3 and CV4 If velocity is off only volume CV3 or the free adjustable controller CV4 is used to generate the control voltage If velocity is on the volume or controller
11. ost of the synthesizer manufacturers Moog ARP Oberheim Roland Sequential Circuits Doepfer Because of the non linear voltage range mode the resolution is very poor in the Hz V mode especially in the lower voltage range Consequently the Hz V mode should be treated as a free bonus and used only if there is no other solution 8 Control change number for CV4 If the A 190 2 receives a Midi control change message except bank controllers 0 and 32 while being in the learn mode the control change number of this message defines the new control change number for CV4 except bank controllers 0 and 32 l e the CV4 output of the A 190 2 corresponds from now on to this controller number The control change message must be sent on the A 190 2 Midi channel see note 1 10 System A 100 QOEPFER Temporary parameter changes The program change messages listed in the table can be used to change the settings even temporarily without the need to select the learn mode Temporarily means that the changes are not stored permanently in the non volatile parameter memory but only as long as the module is powered If the A 190 2 is turned off and on the previously stored parameter settings are called up again The temporary changes may be used to try out different settings without storing them into the memory or to change the settings temporarily from a Midi foot switch or sequencer e g retrigger on off for assign mode change If the para
12. r both volume and velocity velocity volume Details in chapter 5 The factory setting is volume only no velocity Usually this output is connected to the CV input of a voltage controlled amplifier VCA that is used to control the overall loudness of the patch But it can be used also to control any other function by Midi volume or velocity e g filter frequency filter resonance LFO frequency CV output Controller CV4 This socket outputs a voltage that is controlled by valid Midi control change messages i e the right control change number on the right Midi channel The voltage range is 0 V controller data 0 5V controller data 127 The control change number can be adjusted to any value Even this output can be connected with velocity same as CV3 Details in chapter 5 The factory setting is controller 1 i e modulation controller no velocity The output can be used to control any parameter by the corresponding Midi control change messages e g modulation depth filter frequency wave multiplication depth waveform morphing panorama QOOEPFER 4 Controls Learn This is a momentary switch that is used to adjust the parameters of the A 190 2 in combination with Midi note control change or program change messages e g Midi channel reference note control change number gate polarity retrigger on off key assign mode Details in chapter 5 The learn button is also used to reset the module
13. te Learn LED In Outputs Midi In Midi input Gate Gate output CV Note CV output Note CV Pitch CV output Pitch Bend CV VIN CV output Velocity Volume O CV Ctrl CV output Controller Width 6 HP Current 50 mA QOEPFER Fig 2 Front panel QOOEPFER 3 In Outputs Midi input The Midi input of the A 190 2 is connected to the Midi output of the Midi transmitter that is used to control the A 190 2 e g Midi keyboard or sequencer Gate output The Gate outputs turns high when a valid Midi note on message is recognized by the A 190 2 It turns back to low when the corresponding note off message occurs The Gate levels are 5V high state and OV low state If desired the gate polarity can be inverted Details in chapter 5 Usually the gate output is connected to the gate input of an envelope generator e g ADSR A 140 that is used to control the VCA and or VCF of the patch The A 190 2 has available a jumper that allows to connect the Gate output of the module to the Gate line of the A 100 bus see appendix Important note The module comes with an installed Gate jumper i e one has to remove the jumper if e g an A 190 1 or A 185 1 is connected to the gate line of the same bus board If the A 190 2 has to be used as Gate source for the A 100 bus the Gate connection of any other Gate source e g A 190 1 or A 185 1 has to be removed Otherwise a System A 100 Midi
14. value is multiplied with the note on velocity i e the CV value changes with every new note event as the velocity of the note event is used to calculate the control voltage together with the volume message CV3 or the assignable controller CV4 QUEPFER 3 Retrigger on off With this parameter one can select whether the gate is reset for a few milliseconds when playing egato i e playing a new note on the keyboard while the key of the former note is still pressed The factory default setting is retrigger off Additionally the Midi controllers LEGATO controller 68 and SUSTAIN controller 64 affect the gate output in the usual manner 4 Gate polarity With this function the gate polarity can be changed Within the A 100 this features is not required because all envelope generators of the A 100 use positive gate polarity only Only if the A 190 2 is used to control other equipment or for special features this function might be useful 5 Velocity resolution This parameter defines whether the velocity resolution is 127 steps as usual or two steps only The two step mode is similiar to the accent used in some vintage equipment e g TB303 TR808 and could make sense to simulate one of these devices The velocity threshold value for the two step mode is 100 incoming velocity values of 100 or more are converted System A 100 Midi to CV Gate A 190 2 into a fixed velocity value 127 incoming velocity values less than
15. wn for about one second The one second delay was programmed to prevent the unintentional release of the learn mode Whenever the LED is flashing without incoming Midi messages the learn mode is active In this mode the A 190 2 is looking forward to an incoming Midi note on program change or control change event see table below If one has entered the learn mode by mistake one can leave it by pressing the learn button again The learn mode is also be terminated if one of the Midi events in the table below is received While the A 190 2 is in learn mode the parameters listed in the table on the next page can be adjusted via incoming Midi messages Whenever the A 190 2 receives one of the Midi messages listed in the table the parameter in question is changed and the A 190 2 returnes to the normal play mode i e the LED stops flashing Pay attention that not unintentional Midi messages appear while beeing in the learn mode e g from a sequencer as you change the settings of the A 190 2 with such messages All parameter changes made while beeing in the learn mode 6 System A 100 QOEPFER are stored non volatile parameter memory When the A 190 2 is turned on next time the parameter settings are taken from this memory QOOEPFER System A 100 Midi to CV Gate A 190 2 Function Midi message Note Comment Midi channel reference for CV1 0V___ Note on 1 CV3 velocity off Program Change 1 CV3 volume CV3 velocity on
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