Doepfer A-192 User Manual

doepfer
System A - 100
1. Introduction
Module A-192 is a CV-to-MIDI interface that converts 16 control voltages in the range 0...+5V into 16 MIDI control change messages. A-192 is the modular ver­sion of replaced by 16 miniature jack sockets to process any control voltage instead of the manually generated MIDI control changes of Pocket Control.
MIDI messages appearing the MIDI Input are merged to the MIDI controller messages generated by the A-192.
Pocket Control
CVM 16
with the 16 rotary controls
A-192
128 different assignments ( inputs to MIDI controller messages are available. Swit­ching between the 128 presets takes place with an 8-pin DIP switch on the pc board (permanently) or via incoming MIDI program change messages (temporarily). If none of the 128 factory presets is suitable new presets can be programmed with the Pocket Control editor program which is available for free on our web site www.doepfer.com
The snapshot button transmits the 16 momentary states of the 16 inputs as MIDI controller messages.
Preset
s) of the 16 CV
.
1
A-192
CVM 16
System A - 100
doepfer
2. Overview
!
A-192 CVM16
CV-to-MIDI Interface
19
Snapshot
2
3
4
5
6
7
8
10
Control
11
12
13
14
15
16
MIDI
In
MIDI
Out
1
2
"
§
Controls and indicators
1 Snapshot : Momentary switch (sends a snapshot
of all the momentary CV settings)
Control:LED display
2
(- DIP switch: 8 pin switch on the A-192 pc board to
select a preset, not shown
)
In- / Outputs:
Sockets
!
MIDI In : MIDI input
"
§ MIDI Out : MIDI output
: 16 CV inputs (range 0...+5V)
DOEPFER
2
doepfer
System A - 100
CVM 16
A-192
3. Basics
Module A-192 converts up to 16 analog control volta­ges (CV) in the voltage range 0...+5V into 16 MIDI controllers (exactly: MIDI control change messages). The MIDI channel for each controller can be selected (1-16). E.g. 16 different controllers on the same MIDI channel may be chosen, or even the same controller number on different MIDI channels. All mixtures of controller numbers and MIDI channels are possible. The term controller is not quite correct as A-192 even supports similar messages like after touch or pitch bend, as well as most of the common RPN resp.
controllers and most of the
NRPN lers resp. XG sysex messages.
The active input voltage range is 0...+5V. Negative voltages and voltages above +5V are not converted. A protection circuit on each input prevents the da­mage of the module as long as the voltages applied to the inputs are in the range of -12V...+12V. This means that within the A-100 system it is not possible to damage the A-192 module as the output voltages of all A-100 modules are within these limits.
If negative voltages (e.g. from a LFO) or voltages above +5V (e.g. from an ADSR) are to be converted an attenuator / offset generator module (A-129/3) has
GS, XG control-
to be inserted between the voltage and the A-192 input. The A-129/3 enables the addition of a positive voltage and the attenuation of the input voltage so that the output (= input of A-192) is in the required range of 0...+5V.
The assignments of the 16 CV inputs to MIDI control­lers and channels is defined in is selected permanently with an 8-pin DIP switch on the pc board or temporarily via incoming MIDI pro-
gram change messages
nel.
You will find a table of all factory presets with the corresponding DIP switch settings in the appendix of this manual. If none of the factory presets is suitable for your application you may program one or more new presets with the editor program which is avai­lable for free on our web site www.doepfer.com (same as editor program for Pocket Control). The program runs on a PC under Windows 95/98/2000.
For a small extra charge (about US$10.00) we also have available the OEM version of Emagic’s Sound-
(universal editor program) suitable for both PC
diver
and Mac.
128 presets
on the MIDI master chan-
. A preset
.
3
A-192
CVM 16
System A - 100
doepfer
As soon as one of the 16 input CVs changes the corresponding MIDI controller messages is generated. In case of a continually changing voltage (e.g. from a LFO or Theremin) the corresponding MIDI controller is transmitted permanently. In case of a static voltage (e.g. from CV source A-176) the single transmission of all 16 MIDI controllers can be triggered with the
snapshot
Unused inputs are connected to GND (= 0V) by means of the switching contacts of the CV sockets (sockets are “normalled to GND”). This means that an unused input will generate no MIDI data as long as no plug is inserted into the corresponding CV socket (and the snapshot button is not operated). Please avoid to connect a patch cord into a CV socket with the second side left open. In this case the switching contact does no longer connect the CV input to GND and random MIDI data are generated for this CV input.
The 16 analog inputs are internally converted into digital data by means of an 8-bit analog-to-digital converter (ADC). Because of the MIDI data format only 7 bits are used (MIDI data range 0...127).
button.
4. Controls and indicators
1 Snapshot
The Snapshot switch has various functions:
to send a Snapshot of all the current CV settings
for setting the master MIDI channel
to reset the A-192 after an overflow at the MIDI in
The switch is a remnant of equipped with 16 (static) rotary potentiometers. The switch is normally not required for A-192 operation. Especially the snapshot function (item 1 in the list above) is normally not necessary because the input voltages of A-192 usually change permanenty and thus the MIDI data are generated permanently.
Generating a Snapshot:
The snapshot function is not achieved by just pressing the snapshot switch, as this could be accidentally pressed too easily. So to activate the Snapshot func­tion, first briefly press the Snapshot switch once, this causes the LED to flash, the Snapshot switch needs to be (whilst the LED is still flashing). This then invokes the snapshot function, and the data from all 16 control knobs is transmitted from the A-192.
pressed again within at least one second
Pocket Control
which is
4
doepfer
System A - 100
CVM 16
A-192
The snapshot switch may even be used to set the master channel. This is not as simple as for Pocket Control because of the missing 16 potentiometers (remember: the switch is a remnant of Pocket Control):
To set the Master channel, hold the snapshot switch down for at least one second and keep it held down, the LED then stays on to indicate Master channel setting mode (do not let go of the button until the required value has been selected). In this mode the CV inputs become channel selectors, and do not transmit the normal control data. To select a channel, the input voltage change on one while the other 15 voltages remain unchanged (e.g. to set channel 5, the voltage of CV input 5 has to be changed). If you accidentally changed the wrong vol­tage, just change the correct one, as it is the last voltage change that determines the actual Master channel set. In practice all plugs are removed except the one plug that defines the MIDI master channel. On this plug now a changing voltage has to appear. The master channel is stored non-volatile in the mo­dule even during power off. We know that this way of setting the master channel is not very comfortable but this function is a remnant of Pocket Control. In practice this step has to be carried out only once and is not necessary if the editor pro­gram is used.
input is necessary
MIDI
To
clear any MIDI input error
flow (too much data in one go), press the snapshot switch briefly once (do not press it again until at least one second has passed, or this would enter the snaps­hot mode). For details please refer to the next chapter.
such as a MIDI over-
2 Control
The LED 2 indicates the status in various modes. Under normal operation the LED indicates activity, and also MIDI output activity when input voltages are converted into MIDI data. The LED also indicates:
Power on reset - the LED will stay lit for around
one second when the power is first applied.
Any error at the MIDI input (MIDI overflow) - the LED turns on permanently
Data and status when setting the Master channel (see 1 snapshot)
The status of the Snapshot function (see 1 snapshot)
Indication that a preset has been changed
Typical reasons for a MIDI overflow are too much MIDI data (e.g. MIDI output of a computer sequencer with many active tracks/channels) or Sysex data sent too fast to the module. In both cases wrong MIDI data may be sent to the MIDI output of the module.
MIDI input
5
A-192
CVM 16
System A - 100
5. In- / Outputs
CV Inputs 1 ... 16
!!!!
The 16 sockets ! are the control voltage inputs of the CV-to-MIDI interface. The control voltages to be converted into MIDI data are connected to these soc­kets. The active voltage range for each input is
0...+5V. 0V corresponds to MIDI data 0, +5V to 127. The conversion is linear (i.e. +2.5V corresponds to about 63/64 MIDI data).
The module is working reliable as long as the input voltages are within the limits 5V...+12V but only the range 0...+5V is converted into MIDI data. Voltages less than -5V may cause faulty MIDI data. The protec­tion circuit on each input prevents a damage of the module as long as the voltages applied to the inputs are in the range of -12V...+12V. Voltages more than +12V or less than -12V may damage the module. Within the A-100 system it is not possible to damage the module as no voltages beyond these limits are generated within the A-100 system.
An attenuator/offset module A-129/3 should be used to convert voltages beyond the range 0...+5V into the active range 0...+5V.
doepfer
MIDI In
"
The
MIDI In
MIDI data from another MIDI device may be trans­mitted to the A-192 and merged with the MIDI data generated by the A-192 (e.g. the MIDI output of a keyboard).
The MIDI input is required if an editor program is used to change presets in the A-192 or to progam new ones. Please refer to the manual of the editor program for details. An editor program for PC is available for free download on our web site www.doepfer.com
An incoming program change message on the MIDI master channel selects one of the 128 pre­sets. This selection is only temporarily, i.e. the new preset is active only until the next power off. During power on the preset defined by the DIP switch setting is selected. The selection of a new preset via program change is indicated by lighting up of the LED for about one second. During this period no incoming MIDI data is recognized (i.e. no MIDI merging, no program change recognition).
If none of these applications is used the MIDI in socket remains unconnected.
socket " has 3 different functions:
(same as Pocket Control editor).
6
doepfer
System A - 100
CVM 16
A-192
MIDI Out
§
This is the MIDI Out socket. It is connected to the MIDI input of the device controlled by the MIDI data of the A-192 (e.g. computer sequencer, expander, key­board, MIDI-toCV converter and so on).
6. User Examples
Module A-192 can be used to convert any control voltage in the A-100 into MIDI controllers. Especially those applications normally not available in the world of MIDI are the most interesting ones. Of course one may convert a (slowly oscillating) LFO or ADSR into MIDI. But more interesting are e.g. those applications:
Theremin-to-MIDI (A-178
Light-to-MIDI (A-179 ➔➔➔ A-192)
Envelope-to-MIDI (A-119 Envelope
Sequencer-to-MIDI (A-155 ➔➔➔ A-192)
Footcontroller-to-MIDI (A-177
Vocoder MIDI interface
Another very important application of the A-192 is the “MIDI-fication” of the vocoder modules A-129/x. For this the outputs of the vocoder analysis module A-
A-192)
➔➔➔➔
A-192)
➔➔➔➔
A-192)
➔➔➔➔
129/1 is connected to the A-192 inputs. The A-192 converts the 15 analysis voltages into 15 MIDI control­lers. The 16th input may be used for voiced/unvoiced control or as control voltage for the slew limiter. The MIDI data generated by the A-192 may be recor­ded and stored with a computer sequencer. Depen­dent on the power of the sequencer different possibili­ties are coming up:
Recording and playing back the recorded “vocoder
sequence” (MIDI controllers) at different at speeds “Freezing” at a certain position (e.g. a vowel like “a”)
Storing certain vowels or filter settings
Realtime display of the controllers like a spectrum
analyser
The conversion of the recorded MIDI controllers back into control voltages may be performed with a special version of the MIDI-to-CV converter A-191. A modified version that responds to 16 MIDI controllers is required (i.e. without LFO, after touch and pitch bend). The first 15 CV outputs are connected to the CV inputs of the vocoder synthesis section A-129/2. The 16th CV out­put may be used for voiced/invoiced control (i.e. con­trolling a VC switch) or as control voltage for the slew limiter controller A-129/4.
7
A-192
CVM 16
System A - 100
7. Patch-Sheet
The following diagrams of the module can help you recall your own Patches. They’re designed so that a complete 19” rack of modules will fit onto an A4 sheet of paper.
Photocopy this page, and cut out the pictures of this and your other modules. You can then stick them onto another piece of paper, and create a diagram of your own system.
Make multiple copies of your composite diagram, and use them for remembering good patches and set-ups.
P
Draw in patchleads with colored pens.
Draw or write control settings in the little white circles.
A-192 CVM16
CV-to-MIDI Interface
19
Snapshot
2
3
4
5
6
7
8
10
Control
11
12
13
14
15
16
doepfer
MIDI
In
MIDI
Out
DOEPFER
8
doepfer
System A - 100
CVM 16
A-192
Appendix: Selecting a Preset with the DIP switch
On the A-192 main board an DIP switch with 8 single switches is located near the LED behind the sockets no. 10 and 11. This switch is used to select one of the 128 presets after power on. As 8 switches could address 256 presets the eighth switch is unused. Its setting has no meaning so far.
The least significant switch (labelled “1” in the table on the following page) is located below in direction to the MIDI sockets. The most significant switch (labelled “8” in the table) is located above near the LED.
A closed switch (position “ON”) corresponds to a “1” in the table on the following page. An open switch (position “OFF”) corresponds to “0”.
The empty presets from no. 65 are not used while this manual is written. But they may be in use when you receive the module. On our web site www.doepfer.com you will find the current state of all presets (same as for Pocket Control).
The term Masterchn means that the MIDI data are transmitted on the MIDI master channel (see page 5 concerning the master channel).
More detailed information about the presets you may find on our web site www.doepfer.com in the product description and user’s manual of Pocket Control. In this manual the presets are described a little bit more detailed. A-192 is identical to Pocket Control if one replaces the 16 rotary potentiometers (generating
0...+5V) by the 16 input sockets of A-192 in the product description and user’s manual.
For the A-192 probably one of the more general pre­sets 0...15 is the best choice. E.g. presets no. 8 (MIDI controllers 0...15 on the master channel) or preset no. 9 (MIDI controllers 16...31 on the master channel).
Additionally a preset can be selected temporarily with a MIDI program change message on the master chan­nel (see chapter 5 / MIDI In).
9
A-192
12345678 Preset #: preset name 12345678 Preset #: preset name 00000000 Preset 0: Volume Channel 1 - 16
10000000 Preset 1: Panorama Channel 1-16 01000000 Preset 2: Cutoff Channel 1-16 11000000 Preset 3: Resonance Chan. 1-16 00100000 Preset 4: Volume/Pan Ch.1 - 8 10100000 Preset 5: Volume/Pan Ch.9 - 16 01100000 Preset 6: Cutoff/Reson. Ch.1-8 11100000 Preset 7: Cutoff/Reson. Ch.9-16 00010000 Preset 8: Ctrl 0-15 Masterchn 10010000 Preset 9: Ctrl 16-31 Masterchn 01010000 Preset 10: Ctrl 32-47 Masterchn 11010000 Preset 11: Ctrl 48-63 Masterchn 00110000 Preset 12: Ctrl 64-79 Masterchn 10110000 Preset 13: Ctrl 80-95 Masterchn 01110000 Preset 14: Ctrl 96-111 Masterchn 11110000 Preset 15: Ctrl 112-127 Masterchn
00001000 Preset 16: GS/XG Masterchn 00001100 10001000 Preset 17: AWE/SB 1 Masterchn 10001100 Preset 49: XG EQ 01001000 Preset 18: AWE/SB 2 Masterchn 01001100 Preset 50: XG Reverb 11001000 Preset 19: AWE/SB 3 Masterchn 11001100 Preset 51: XG Chorus 00101000 Preset 20: AWE/SB 4 Masterchn 00101100 Preset 52: XG Variation 10101000 Preset 21: AWE/SB 5 Masterchn 10101100 Preset 53: XG Insertion 1 01101000 Preset 22: GS/XG Drum Pitch 01101100 Preset 54: XG Insertion 2 11101000 Preset 23: GS/XG Drum Level 11101100 Preset 55: GS Reverb/Chorus 00011000 Preset 24: GS/XG Drum Pan 00011100 Preset 56: Strings 10011000 Preset 25: GS/XG Drum Reverb 10011100 Preset 57: Rebirth Mchn 01011000 Preset 26: GS/XG Drum Chorus 01011100 Preset 58: CS1x Masterchn 11011000 Preset 27: GS/XG Drum Delay/Var 11011100 Preset 59: Waldorf Pulse Mchn 00111000 Preset 28: XG Drum Cutoff 00111100 Preset 60: ASR-X Masterchn 10111000 Preset 29: XG Drum Reson. 10111100 Preset 61: Doepfer MAQ 1 Mchn 01111000 Preset 30: XG Drum Attack 01111100 Preset 62: Doepfer MAQ 2 Mchn 11111000 Preset 31: XG Drum Decay 11111100 Preset 63: K5000 MCB10 Mchn
CVM 16
System A - 100
00000100 Preset 32: XG Level Chn 1 - 16 10000100 Preset 33: XG Pan Chn 1 - 16 01000100 Preset 34: XG Reverb Chn 1 - 16 11000100 Preset 35: XG Chorus Chn 1 - 16 00100100 Preset 36: XG Dry Chn 1 - 16 10100100 Preset 37: XG Var Chn 1 - 16 01100100 Preset 38: XG Low EQ Gain Chn 1 - 16 11100100 Preset 39: XG Low EQ Chn 1 - 16 00010100 Preset 40: XG High EQ Gain Chn 1 - 16 10010100 Preset 41: XG High EQ Chn 1 - 16 01010100 Preset 42: XG Mpart-Effect Masterchn 11010100 Preset 43: XG Level AD1/2,W1-12 00110100 Preset 44: XG Pan AD1/2,W1-12 10110100 Preset 45: XG Reverb AD1/2,W1-12 01110100 Preset 46: XG Chorus AD1/2,W1-12 11110100 Preset 47: XG Var AD1/2,W1-12
Preset 48: XG Dry AD1/2,W1-12
doepfer
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