DOEPFER MUSIKELEKTRONIK GMBH
DOEPFER MUSIKELEKTRONIK GMBH
WHEEL ELECTRONIC
(Universal Midi Control Electronics for
Modulation Wheels, Foot Controllers , BreathController, Joy Sticks etc.)
V1.0
© 2007 by Doepfer Musikelektronik
Table of contents
Table of contents ........................................................................................................................................ 2
Electrical safety / EMC compatibility........................................................................................................... 2
Warranty ..................................................................................................................................................... 3
Introduction................................................................................................................................................. 4
Connection and Installation ........................................................................................................................ 5
Power Supply (1) .................................................................................................................................... 5
Midi Out Socket (2) ................................................................................................................................. 5
Midi In Socket (3) .................................................................................................................................... 7
LED Control (4) ....................................................................................................................................... 7
Connectors for the four analog controls (5) ............................................................................................ 7
Connector for the switching control (6) ................................................................................................... 9
Controls and Operation ............................................................................................................................ 10
Function of the jumper area JP1........................................................................................................... 10
Function of the jumper area JP2........................................................................................................... 12
Function of the trimming potentiometer P1 ........................................................................................... 12
Mounting................................................................................................................................................... 13
Check list .................................................................................................................................................. 14
Extent of delivery ...................................................................................................................................... 15
Electrical safety / EMC compatibility
WHEEL ELECTRONIC (abbreviated "WE" in the following) is a so-called OEM product (OEM
original equipment manufacturer) that cannot be used independently but has to be combined
with additional electrical or electronical equipment to become a working device (e.g.
potentiometers, switches, power supply, case/housing). The manufacturer of WE does not know
the final assembly of the complete device in which the WE is used as a part of the complete
device. The final responsibility with regard to electrical safety and electromagnetic
compatibility is up to the user who is assembling the complete device.
Electronic basic knowledge is required to install WE and to connect the controls resp.
control voltages. If you are not sure whether your knowledge is sufficient please consult an
expert. We cannot take back modules that became defective because of wrong installation or
wrong connection of the controls or voltages.
Please pay attention to the following items:
The power supply used in combination with the WE has to be a closed type (in Germany a
power supply with VDE approval is required). Normally an AC adapter with plastic case is used.
It is not allowed to use open power supplies whith open mains voltage access (e.g. via mains
lead, pcb tracks, electronic parts).
On the WE preventing measures against electromagnetic radiation are taken (e.g. an RF
filter at the power supply input). But it is impossible to estimate to what extend the components
added by the user affect the EMC properties of the complete assembly. Therefore the
complete device has to be shielded against electromagnetic radiation (incoming and
outgoing). These demands are normally met by a closed metal case that covers the complete
assembly. The metal case should be connected to GND of the WE.
Page 2
Wheel Electronic V1.0
User's Guide
Warranty
•
•
•
•
•
•
•
•
•
•
Applying any negative voltage (< 0V) or positive voltage above +5V (> +5V) to one of the
five inputs ST1…ST5 will destroy the circuit !
If potentiometers and/or switches are connected between GND and +5V of WE as
described in this manual no problems will occur.
When external control voltages are connected to WE the user has to pay attention that the
voltages applied are strictly within GND and +5V referenced to GND of WE !
Do not solder directly to any of the pin headers but use cable sets with suitable female
connectors to make the connections between WE and the potentiometers, switches,
voltages or other parts. A cable set that contains all required connectors and cables is
included with WE.
Carry out all connections in the off-state of WE (i.e. when powered-off only) !
Do not power on WE (i.e. do not connect the power supply to the corresponding jack socket)
before all five inputs ST1…ST5 are connected. Do not leave analog inputs unconnected !
Unused inputs have to be connected or jumpered to GND or +5V.
WE electronics is an electrostatic sensitive device. Avoid any electrostatic charges ! Do not
touch any of the inputs with your fingers !
Avoid short circuits !
Ignoring any of these items will cause warranty loss !
Return of the WE within the 2 weeks return time limit (valid only in Germany) is only
possible if all these items have been met. Return of used cable sets is not possible. We also
cannot take back modules that have been soldered by the user.
User's Guide
Wheel Electronic V1.0
Page 3
Introduction
•
•
•
•
•
•
•
•
•
•
•
•
•
•
WE is an universal DIY kit to built your own Midi control box. Up to four analog controls and
one switching control can be connected to WE transmitting five different Midi messages.
The controls (e.g. modulation wheels) are not included but have to be purchased by the
customer in addition. We have suitable parts available as spare parts.
Typical examples for analog controls connected to the pin headers ST1…ST4 are
modulation wheels, foot controllers, joy sticks, rotary potentiometers, faders, drawbars,
rotary switches (with resistor chains connected between GND and +5V to generate several
analog voltages), ribbon controllers, pressure sensors, light depending resistors or breath
controllers.
Typical examples for the switching control connected to the pin header ST5 are momentary
or toggling foot switches or any other switches. But even more unusual parts like photo
diodes or photo transistors can be used.
16 so-called presets are available. A preset defines the assignments of Midi messages to
the five control inputs ST1…ST5. The actual preset is selected by a group of jumpers.
Different combinations of Midi control change, pitch bend and (monophonic) after touch
messages are available (pitch bend and after touch are no control change messages). If in
the following the term controllers are used this includes pitch bend and after touch too.
If none of the presets is suitable for the application other combinations of Midi controllers can
be programmed upon request as a special design. Please contact Doepfer Musikelektronik
GmbH for details like additional charges or delivery time (e.g. via email to
[email protected] or [email protected]).
For each of the four analog inputs a jumper is available to select if the full voltage range
(0...+5V) or an adjustable voltage range (0…+V with V+ = +3...+5V) is used for
measurement. This measure is necessary e.g. for modulation or pitch wheels, foot
controllers or joy sticks that do not cover the complete angle of rotation. If such an element is
connected to GND and +5V the maximal output voltage is much less than +5V (e.g. +3V
only). Even breath controllers (e.g. Yamaha BC-1/2/3) output only about +3.5V maximal
voltage. If an electronics is used that analyses the full voltage range 0...+5V the higher Midi
data values are missing. A high resolution trimming potentiometer is available to adjust the
limited voltage range.
If an element is assigned to Midi pitch bend a "plateau" is used in the middle of the
voltage/data range (data value 64). This feature is meaningful in combination with springloaded wheels or joy sticks as due to mechanical tolerances the exact center position is not
always reached
Even voltages sources can be used instead of the controls provided that the voltages
applied are strictly within the range 0...+5V (referenced to WE GND)! Voltages beyond this
range will destroy the electronics !
The four analog controls are connected to four single row pinheaders (three pins each). The
switching control is connected to a pinheader with two pins. Cable sets with suitable female
connectors are available. In this way the controls might be disconnected from the electronics
very easily.
WE is equipped with Midi In and Midi Out. The incoming Midi messages are merged to the
data generated by WE provided that the Midi data does not exceed a certain amount. In this
way several WE can be linked together to obtain larger controller arrays
WE is available only as an assembled and tested pc board (about 59 x 56 x 25 mm).
An external power supply ([email protected] 100mA) is required for the WE. It is included for
all shipments within Germany (230V version with European mains plug). For shipments
outside Germany please ask your local representative or dealer.
We do not offer a suitable housing as this would have to be completely different for various
combinations of controls.
Page 4
Pocket Electronic V1.0
User's Guide
Connection and Installation
Please pay attention to the following notes !
Electronic basic knowledge is required to install the WE electronics and to connect the controls.
If you are not sure whether your knowledge is sufficient please consult an expert. We cannot
take back modules that became defective because of wrong installation or wrong connection of
the controls or voltages. We also cannot take back modules or cables which have been
soldered by the user.
Power Supply (1)
WE does not have a built-in power supply. Instead it uses a plug-in type external power supply
(AC adapter). One reason for this feature is electrical safety. Keeping danger voltages (main)
out of the WE increases the electrical safety. Therefore an external power supply of high quality
and safety should be used. If WE is used in Germany the external power supply has to be VDE
approved. Another reason for the external power supply is the fact that mains voltages and plug
types vary considerably from country to country. Using a plug-in external supply WE can be
used any where with a locally purchased power supply, thus keeping the retail price down.
The power supply has to be able to deliver 7-12 VDC unstabilized voltage, as well as a
minimum current of 100mA. WE is switched ON by plugging the AC adapter into a wall outlet
and connecting it to the appropriate jack on the WE board. There is no separate ON/OFF
switch. After power on the preset adressed by the setting of the jumpers is called up.
If the polarity of the power supply is incorrect, WE will not function. However, there is no danger
of damage to the circuitry since it is protected by a diode. The correct polarity is: outside ring =
GND, inside lead = +7...12V. A power supply for 230V mains voltage with European type mains
plug is included with the WE (valid only within Europe, for other countries ask you local Doepfer
representative or dealer).
Midi Out Socket (2)
Connect the Midi Out socket with Midi In of the device to be controlled by WE (e.g. sound
expander, synthesizer, sample player, computer with Midi interface and suitable software,
second daisy-chained WE) via a suitable Midi cable. If you want to control more than one Midi
device you have to use daisy chain Midi Thru / Midi In connection of the devices ore use a
external Midi Thru box.
User's Guide
Wheel Electronic V1.0
Page 5
Overview: Wheel Electronic Connectors and Controls
(8)
jumper area JP1
for adjustment of Midi
channel and preset
(9)
jumper area JP2
for voltage range
(3)
Midi In
(BU1)
8 7 6 5 4 3 2 1
(4)
LED control
1 2 3 4 5
(2)
Midi Out
(BU2)
(5)
pin headers for
analog controls
(ST1...ST4)
Page 6
(6)
pin header for
switching control
(ST5)
Pocket Electronic V1.0
(7)
trimming
potentiometer
(P1)
(1)
Power Supply
7-12V/100mA DC
(BU3)
User's Guide
Midi In Socket (3)
The WE features a Midi input. This input may be connected to another Midi device (e.g. Midi
keyboard). The incoming Midi data are merged to the data generated by WE. The Midi input
may be used as well for daisy-chaining several WE. The Midi input of WE is not suitable for
large amounts of Midi data (e.g. SysEx strings or Midi messages coming from an computer
sequencer) as the WE has only a small Midi buffer. In case of large amounts of incoming Midi
data loss or delay of data may occur.
If the merge feature of the WE is not required the Midi input is left open.
LED Control (4)
After power on the LED is permanently on. If this does not happen probably the power supply is
not suitable (i.e. not the correct voltage range, minimum current or polarity) or defective. As
soon as a Midi out event occurs the LED turns off for a short time thus indicating MIDI activity.
The LED can be used to show the correct function of WE in principle.
Connectors for the four analog controls (5)
Remark: In the following the terms GND (= abbreviation of ground) and 0V (zero volts) are used
synonymous.
The four pin headers ST1…ST4 with three pins each are used to connect the analog controls.
The pins of these connectore have these functions:
Position
Function
To be connected to ...
end terminal #1 of the potentiometer
(the terminal that corresponds to Midi data 0)
left
GND
center
measuring input
(control voltage)
center terminal of the potentiometer
right
+5V
end terminal #2 of the potentiometer
(the terminal that corresponds to Midi data 127)
The control voltages are normally generated by rotary or fader potentiometers that are
connected between GND and +5V. In this case the wiper of the potentiometers outputs a
voltage in the range 0...+5V while the potentiometer is operated. Another possibility is the
connection of momentary switches or toggle switches (see below). Special potentiometers (e.g.
modulation wheels, foot controllers, joy sticks) usually do not cover the complete angle of
rotation. If an electronics is used that analyses the full voltage range 0...+5V the higher Midi
data values are missing. For this the WE is equipped with a high-resolution trimming
potentiometer (P1) that generates a second reference voltage for controls that do not cover the
complete voltage range 0…+5V. For each of the analog inputs one can select if the full range
(0…+5V) or the reduced range (0…+V, +V adjusted by P1) is used for generating the Midi data.
Even breath controllers (e.g. Yamaha BC-1/2/3) output only about +3.5V maximal voltage.
For details please refer to jumper area JP1.
We recommed the usage of three-pin cable sets with suitable female connectors to establish the
connections between WE and the analog controls. In this way the controls might be
disconnected from the electronics very easily.
User's Guide
Wheel Electronic V1.0
Page 7
GND
+5V
GND
measuring input
+5V
measuring input
Connecting a rotary potentiometer
to ST1…ST4
(valid for potentiometers of
modulation wheels, foot controllers
and joysticks too)
Connecting a fader potentiometer
to ST1…ST4
Linear potentiometers with resistance values 4k7 ... 100k can be used. We recommend 10k
(linear).
Important: Unused measuring inputs have to be connected to GND or +5V. Avoid open inputs !
An open input will cause the transmission of random Midi data causing undesirable side effects
at the Midi receiver (e.g. Midi overflow or random parameter fluctuations). E.g. jumpers can be
used to connect the center pin of ST1…ST4 to GND (left position) or +5V (right position).
Even momentary or toggle switches can be connected to ST1…ST4 altought WE was not
developed for this application. The switches can be used in two different ways:
version 1
version 2
state of rest
Midi data
voltage
0
0V
127
+5V
active state
Midi data
voltage
127
+5V
0
0V
Simple momentary switches (1 contact, open at rest) or simple toggle switches (1 contact on/off)
are required. According to the desired behaviour (version 1 or 2 in the above table) the switch
has to be wired correspondingly:
Measuring input
Page 8
Measuring input
Pocket or
Electronic V1.0Connection of a momentary orUser's Guide
Connection of a momentary
toggle switch (version 1)
toggle switch (version 2)
In both cases an additional 10k resistor is required (possible range 4k7 to 100k) to pull the
analog input to a defined state during the switch is open.
•
Version 1: The resistor is soldered between GND and the measuring input . This way the
input is pulled to GND ( =0V corresponding to Midi data 0) as long as the switch is left open.
When the switch is closed the voltage jumps to +5V corresponding to Midi data 127.
•
Version 2: The resistor is soldered between +5V and the measuring input . This way the
input is pulled to +5V (corresponding to Midi data 127) as long as the switch is left open.
When the switch is closed the voltage jumps to 0V corresponding to Midi data 0.
Even a Yamaha breath controller BC-1/2/3 can be connected to connector ST4 if preset #2 is
used (please refer to page 11). The stereo miniature plug of the BC-1/2/3 uses the same signals
as ST4 of WE: GND, control voltage and +5V. In addition a pull-up resistor (about 1k ...4k7) has
to be added between the control voltage pin and +5V. This measure is – at least for the BC-2 –
required as a serial diode is added to the breath controller's output. Then BC2 generates a
voltage in the range of +5V (no pressure) to ~ +2,5V (maximum pressure). In addition the
behaviour can be adjusted by the trimming potentiometers offset and gain of the BC2.
~ 3k3
+5V
control
voltage
GND
The pinout of the breath controller connector is taken from the service manual of Yamaha BC2.
Pay attention to the unusual connection of +5V and GND ! A BC2 has been tested successfully
in combination with WE. The specification of the breath control connector is without obligation
for other devices! Please check if the connector of your breath control is identical. We are not
responsible for defective breath controllers connected in the wrong way. We recommend the
usage of a 3,5 mm stereo jack socket for the connection. The socket is connected to ST4 of WE
via the 3-pin cable set that is included with WE.
Connector for the switching control (6)
The switching control (e.g. a foot switch or any other switch) is connected to the two pins of
ST5. The connection is planned for a foot switch with closed contact at rest (e.g. the foot
switches VFP1 or VFP2). When the foot switch is operated (i.e. the contact opens) Midi data
127 is sent, when it is released 0 is transmitted.
If another momentary or toggle switch is connected to ST5 a version with closed contact at rest
has to be used. Otherwise the behaviour of the switching element is reverse.
We recommed the usage of two-pin cable set with suitable female connector to establish the
connection between WE and the switching control. In this way the controls might be
disconnected from the electronics very easily.
User's Guide
Wheel Electronic V1.0
Page 9
Controls and Operation
In addition to the elements connected to ST1…ST5 WE has these controls available:
•
•
•
Jumper area JP1 for adjustment of Midi channel and preset selection
Jumper area JP2 for voltage range selection
Trimming potentiometer P1 for adjustment of the reduced voltage range +V
Function of the jumper area JP1
The jumper area JP1 is made of a double row pin header with 16 pins that can be used to install
up to 8 jumpers. The jumpers 1…4 are used to adjust the Midi channel. With the jumpers 5…8
one of the presets is selected. A preset defines the assignments of Midi messages to the analog
inputs ST1…ST4 and the switching input ST5.
The following table shows the relation between the settings of the jumpers 1…4 of JP1 and the
corresponding Midi channels:
1
Q
Jumper #
2
3
4
Midichannel
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Q = jumper installed
The factory setting is shaded grey (Midi channel 1).
Page 10
Pocket Electronic V1.0
User's Guide
The following table shows the relation between the settings of the jumpers 5…8 of JP1 and the
corresponding preset:
Preset
#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
5
Jumper #
6
7
8
ST1
PIT
PIT
VOL
MOD
1/2
SUST
PAN
Midi function of ...
ST2
ST3
ST4
MOD
VOL
AT
MOD
VOL
BC (*)
VOL+1
VOL+2
VOL+3
68
VOL
EXP
3/4
5/6
7/8
SOST
SOFT
VOL
EXP
VOL
BAL
ST5
SUST
SUST
SUST
SUST
SUST
SUST
SUST
Q = jumper installed
The factory setting is shaded grey (preset # 1).
Abbreviations:
PIT
AT
MOD
BC (*)
VOL
BAL
PAN
EXP
SUST
SOST
SOFT
pitch bend
monophonic after touch
modulation (control change # 1)
breath control (control change # 2), voltage range adapted to BC2 (+5...+2,5V)
volume (control change # 7)
balance (control change # 8)
panorama (control change # 10)
expression (control change # 11)
sustain (control change # 64)
sostenuto (control change # 66)
soft pedal (control change # 67)
number
other controller (number = control change number)
Remarks:
•
•
•
•
Preset #1 is the standard preset for pitch bender, modulation wheel and two controllers for
volume and after touch.
Preset #2 is similar to preset #1 but after touch is replaced by breath control. The WE
firmware has been adapted to the Yahama BC2. BC2 generates a voltage in the range of
+5V (no pressure) to ~ +2,5V (maximum pressure), i.e. the behaviour is reverse (higher
pressure → lower voltage) and the voltage range is limited to about +2,5...+5V. Connector
ST4 of preset #2 has been adapted to this behaviour.
Preset #3 is planned to control the volume on four succeeding Midi channels. The Midi
channel selected by the jumpers 1...4 is valid only for ST1. ST2, ST3 and ST4 transmit their
volume data on the following Midi channels (marked by V+1, V+2, V+3).
Preset #4 is a special preset for the organ emulation B4 by Native Instruments. The control
change numbers 1 (actually modulation) and 68 are used to control the rotary speakers.
User's Guide
Wheel Electronic V1.0
Page 11
•
•
•
Control change # 1 is used for fast/slow, # 68 for on/off. Please refer to the B4 manual for
details. In addition volume and expression are available.
Preset # 5 is a special preset for joy sticks. Starting from the center position (i.e. about +2.5V
control voltage) for up/down and left/right movement of the joy stick different Midi control
changes are used (1/2, 3/4, 5/6 and 7/8).
Preset # 6 is a special preset for triple (or dual) foot controllers. For sustain one can choose
between the continuous version (ST1) or the switching version (ST5). In addition a volume
controller can be used. If a foot controler with switches is used the wiring for switches has to
be made (please refer to page 9). If a foot controller with potentiometers is used it depends
upon the type of potentiometer how it has to be wired. If potentiometers with three terminals
are used they are connected like normal potentiometers (please refer to page 8). If
potentiometers with only two terminals are used (variable resistor only) the two terminals
have to be connected to GND and the measuring input. In addition a pull-up resistor has to
be connected between the measuring input and +5V. One has to try out different values for
the resistor. Half the value of the potentiometer is a good starting point. Even a trimming
potentiometer instead of a fixed resistor can be used. If the behaviour is reverse the
connections have to be exchanged: pull-down resistor between GND and the measuring
input, potentiometer of the foot controller between the measuring input and +5V). Even foot
controllers with a combination of switches and potentiometers are available (e.g. the FATAR
VFP3-2D).
Presets # 7 to 15 are not used in the first version of the WE firmare.
Function of the jumper area JP2
The jumper area JP2 consists of a double row pin header with 10 pins that can be used to install
up to 5 jumpers. Four jumpers are used to select between full voltage range (0…+5V) or
reduced voltage range (0…+V) for the analog inputs ST1…ST4. The fifth jumper is unused.
The following table shows the relation between the settings of the jumpers of JP2 and the
corresponding voltage ranges for the analog inputs ST1…ST4:
Jumper
1
2
3
4
Input
ST1
-
ST2
-
ST3
-
ST4
Voltage range
0…+5V
0…+V
0…+5V
0…+V
0…+5V
0…+V
0…+5V
0…+V
= jumper installed
- = jumper not installed
The factory setting is shaded grey (all inputs full range 0...+5V).
Function of the trimming potentiometer P1
The trimming potentiometer P1 is used to adjust the reduced voltage range V+. Any voltage
between 0V and +5V can be adjusted though only voltages in the range +3...+5V should be
used. Reference voltages below +3V cause malfunction of the analog-to-digital converters
Page 12
Pocket Electronic V1.0
User's Guide
though nothing can be damaged. The reduced voltage V+ becomes valid for an input if the
corresponding jumper of JP2 is removed (see above table).
For the adjustment of P1 a small screw driver is necessary. P1 is a multi-turn potentiometer to
enable a fine adjustment of V+. When P1 is turned counterclockwise (CCW) V+ increases,
clockwise (CW) V+ decreases. The factory setting is fully CCW (+5V). This is the same as if the
+5V range is selected by the corresponding jumper of JP2.
If the reduced voltage range V+ is required (e.g. for modulation wheels, foot controllers, some
joy sticks) the element connected to ST1...ST4 should be set to it's maximum position, i.e. the
position that corresponds to a Midi data value 127. Beginning from fully CCW P1 is adjusted so
that a Midi value a bit below 127 is sent (e.g. 125). Then P1 is re-adjusted a little bit until just
data 127 appears. If the element connected to ST1...ST4 does not transmit Midi data 0 in it's
minimum position the potentiometer inside the modulation wheel, foot controller or joy stick has
to be twisted until data 0 is send. After that P1 has to be readjusted again as described above.
A Midi monitor program is a very useful tool for the adjustment of P1, e.g. Midi Ox. A link to this
shareware program is available on our website.
Mounting
Before WE is put into operation the board has to be fixed on a suitable support and built into a
metal case together with the controls (refer to EMC notes on page 2). The metal case has to be
connected to GND of WE. We recommend to use the metal plate of the voltage regulator
7805/IC3 or the GND terminal of the power supply socket for this connection.
The board measures about 59 x 56 x 25 mm. Three mounting holes with 3 mm diameter are
available for mounting the board inside the case e.g. with distance sleeves or spacers (> 5 mm
in length) and suitable screws. Pay attention that no short circuits are made – neither on the top
of the board (electronic parts) nor on the bottom (solder points or pcb tracks). In case of doubt
use isolating plastic parts (e.g. plastic screws, nuts and washers) for mounting.
Position of the mounting holes and sockets
(measures in mm)
User's Guide
Wheel Electronic V1.0
Page 13
Check list
In case that your WE installation does not work at the first go please check the following points:
• Does the power supply work correctly ?
• After power on the LED has to turn on ! Otherwise the AC adapter used is not suitable, has
the wrong polarity, voltage or current, or does not work. The correct polarity is: outside ring =
GND, inside lead = +7...12V.
• Are the controls connected correctly as described in this manual ?
• Is the right Midi channel selected with the jumpers 1…4 of JP1 ?
• Is the right preset number selected with the jumpers 5…8 of JP1 ?
• Is the right voltage range selected with the jumpers jumpers of 1...4 JP2 ?
• Are unused analog inputs connected to GND or +5V (or jumpered correspondingly directly at
the pin headers ST1…ST4) ? When the LED is flickering permanently without operating one
of the controls probably one of the four analog inputs is left open !
• If inputs jumpered for the reduced voltage range seem to work not as they should (e.g.
permanent data transmission or no data transmission) check if the voltage V+ adjusted with
P1 is more than +3V. With reference voltages below +3V the a/d converters do not work
properly.
• Is the LED flickering if incoming Midi messages appear at the Midi In of WE (e.g. from a
keyboard)?
• Was no short circuit made (neither in the wiring nor mounting) ?
• If the diode D3 and the voltage regulator IC3 become hot probably a short circuit between
GND and +5V was made !
• If momentary or toggle switches are used at the analog inputs ST1…ST4: are the 10k
(4k7...100k) resistors soldered accordingly?
• Are the Midi connections between WE and the other Midi devices installed correctly ? Midi
Out of WE has to be connected to Midi In of the Midi device controlled by WE. Especially
when computers are used Midi In and Out are very often mixed up by the user. Once again:
Midi Out → Midi In (not Midi Out → Midi Out nor Midi In → Midi In).
• Please use only cables that are suitable for Midi.
• When a PC with sound card is used only high quality multimedia cables should be used. Low
cost multimedia cables without optocouplers for Midi In and without drivers for Midi Out very
often cause Midi data problems.
Page 14
Pocket Electronic V1.0
User's Guide
Extent of delivery
The WE delivery contains the following parts:
•
•
•
•
•
Wheel Electronic pc board, assembled and tested
Power Supply (230V mains voltage, European type mains plug, output voltage range
7...12V, current min. 100 mA) included only for shipments within Germany, for shipments
outside Germany please contact your local representative or dealer
This Wheel Electronic user's guide
Four 3-pin cable sets (about 30 cm) for ST1…ST4
One 2-pin cable sets (about 30 cm) for ST5
Elements that can be connected to WE (e.g. modulation or pitch wheels, rotary or slider/fader
potentiometers, foot controllers, foot switches, joy sticks and so on) are not included and have
to be purchased in addition. Suitable parts can be found on our website www.doepfer.com.
Please use the link accessories and spare parts of the product overview page. Prices can be
found in the price list.
User's Guide
Wheel Electronic V1.0
Page 15
Doepfer
Musikelektronik
www.doepfer.com
Doepfer Musikelektronik GmbH
Geigerstr. 13
D-82166 Graefelfing / Germany
Tel. +49 89 89809510
Fax +49 89 89809511
Email: [email protected]
© 2007 by Doepfer Musikelektronik
Anhang: Anschluss der Modulationsräder-Box an Wheel Electronic
Appendix: Connecting the modulation wheel box to Wheel Electronic
P
Pitch Bend
M
Modulation
GND
+5V
NC
Messeingang
measuring input
Spannungsbereich (JP2):
eingeschränkter Bereich (+V)
+V so justieren, dass in Mittelstellung der
Pitch-Bend-Wert 40H (64 dezimal)
gesendet wird
voltage range (JP2):
limited voltage range (+V)
adjust +V so that in the center position the
pitch bend data 40H (64 decimal) is sent
GND
NC
+5V
Messeingang
measuring input
Spannungsbereich (JP2):
voller Bereich (+5V)
voltage range (JP2):
full range (+5V)
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement