Your Schaltwerk is supplied with the software version 1.xx (xx being
the latest release of version 1). It has been extensively checked, both by ourselves and
numerous beta-testers, and has proved to be bug free. Given the complexity of this new
software, It is nevertheless possible that a hidden problem escaped our attention. We
would be very pleased to hear from you in the event that you encounter such a problem.
Well then try to correct it as soon as possible, and will send you a cost-free
- This service is cost-free only if you send in your EPROM. We will erase it and reprogram
it with the corrected software.
- However, this policy does not apply to the broadening of functions, not included in this
software version, and not part of our advertisement. Only genuine software errors are
- Software upgrades which expand the functionality are always offered at a charge.
- To update the software himself/herself, the customer has to open his/her machine to
change the EPROM. This procedure is carried by the customer at his/her own risk and
expenses, i.e., damage to the machine due to an improperly inserted EPROM is not covered
by the warranty.
Changes in terminology
In order to comply with the good practice of a common terminology in all electronic
music equipment, this manual is already using the terminology to be retained in future
software releases of the Schaltwerk. Please take note that some terms appearing on the
display can be different from those described herein. The following table gives you the
correspondence of terms:
Throughout the manual there are mentions for products that are also registered
trademarks, without any special indication. The lack of a ® symbol does therefore not
imply that these brand names can be used freely. Neither, based on the applied
terminology, can we conclude to the existence of patents, nor legally protected material.
It is also explicitly to be noted that the company DOEPFER Musikelektronik GmbH, is not
liable to any warranty nor legal responsibility regarding any damage resulting from the
use of the machine, its hardware and software, or from the contents of the present users
The contents of the present users manual, the layout, design of the hardware and/or
functions of the software, can be changed without prior notice. The company DOEPFER
Musikelektronik GmbH is declining any responsibility whatsoever regarding the hereabove
All rights reserved. No part of this manual can be borrowed, modified or copied in any
way, form or language whatsoever, including any nonmaterial means, without prior written
permission of the company DOEPFER Musikelektronik GmbH.
© Copyright 1997
DOEPFER Musikelektronik GmbH
Tel: +49 / 89.898 095 10
Fax: +49 / 89.808.095.11
1st English edition August 1996 by E. L-K.
During the course of 1997, we plan to expand our existing Internet
pages through the addition of software information and update service. We would like to
offer you not only detailed information about the various software releases, but also the
possibility to download them. Anyhow, customers will be able to download the required
software in order to burn it into an EPROM.
2 Table of contents
3.1 Product liability and extent of
Please comply to the following advice for using and handling the device. Only by
respecting these recommendations can you expect a trouble-free operation of your machine.
As this document is also concerning the product liability and extent of the warranty, it
is mandatory to carefully read the whole document and to comply to all of its
Any claim for damage or replacement is in principle rejected if one, or several, of the
recommendations detailed here are not followed.
Moreover, the 6 month coverage of the warranty can be shortened by not complying to the
3.2 Device purpose
This machine is only dedicated to the applications described in the
present users manual, and cannot, for security reasons, be used for other purposes than
those described here. It is recommended that you ask to a specialist if you are not sure
about some specific application of this machine.
3.3 Operating voltage
The device is only to be used on mains supply or with the further
described low voltage adaptor.
3.4 Opening of the device
To open the device it is mandatory to disconnect the power supply.
3.5 Warranty expiration
Custom modifications made to the device without the manufacturers consent make the
It goes the same for any intervention made to the device by a third party. Moreover,
changes can only be executed by a specialist complying to valid security regulations.
Practically, these modifications will be done by the manufacturer or a manufacturer
approved company, in order to maintain the warranty and its effects.
3.6 Operating environment
The device should not be used in open air, but only in dry places indoors.
Never use the device in moist or wet environment, nor close to flammable material.
Do not use the device in close proximity of strong interference sources such as
computers, monitors and power lines. These can cause perturbation leading to alteration of
data in the memory of the device.
Do not store the device in places where temperature is above +500C (1220F),
or below minus100C (140F). To use the device, a minimal temperature
of +100C (500F) is recommended.
Do not set the device in direct sunlight, or nearby a source of heat.
3.7 Operating control
Do not spill any liquid or other conductive material onto the device. If this happens,
disconnect immediately the supply of the device, and bring it for examination, cleaning,
and possibly repair, to a qualified repairman.
Do not lay any heavy object on top of the device.
All cables should be regularly checked against defects, and changed as necessary, after
confirmation from a qualified person.
Transport the device carefully, do not drop it nor turn it upside down.
Ensure that the unit sits firmly to prevent any fall, slip down or capsize. Only by
respecting carefully these measures can injuries be avoided.
3.9 Installation and removal of the EPROM
The exchange of the EPROM in the unit can only be performed when the supply is
It is especially dangerous to use tools in and around an open device and wiring carrying
mains voltage. After disconnecting the unit, allow some time for the capacitors of the
power supply to discharge.
Before removing the EPROM, check carefully which side has a notch on its end, as you
will have to insert the new EPROM exactly the same way. Usually this notch is also to be
seen on the socket when the component is removed.
To remove the EPROM, it is recommended to lift it by both sides at once, using two
screwdrivers placed under each end of the component, and then exert a gentle lever
movement. The reason is twofold: too much force on one end could break the ceramic casing
of the component, secondly, this parallel movement avoids bending the pins.
Before inserting the EPROM it is recommended to check that the pin rows are parallel to
each other, i.e., all pins point exactly the same direction and make an exact angle of 900
with the casing. This will facilitate the placement of the EPROM into its socket as each
pin will fit perfectly in place without risking to bend the pins. Usually, the pin rows
angle is somehow more opened than a right angle. If it is the case with your EPROM, the
best way to align the pin rows is to hold the chip by both ends between your thumbs and
forefingers, the pins of the chip facing outwards and parallel to a firm surface such as a
table. Place the lower pin row flat on the table, then tilt slowly but firmly to narrow
the angle. Do it step by step to avoid going beyond a right angle. Repeat the operation as
necessary for the other row of pins.
- To insert the EPROM, it is crucial to match the notches present on the socket and the
component. An EPROM inserted the wrong way is always destroyed and can cause serious
damage to the surrounding circuitry.
- Place the EPROM on top of its socket. When the pins are aligned, they should slip into
the holes perfectly. Check once again the orientation of the chip and, if all pins seem to
match their holes, press down the EPROM slowly but firmly, using both thumbs.
Send your machine in the original packing only. To return your machine
for exchange, repair (under warranty or not), update or verification, it must be sent in
its original packing! Shipments using any other packing will be refused. Be sure to keep
the packing and documents in a safe place for later use.
All connectors described here are located at the back of the device.
4.1. Power supply
4.1.1. Version with external transformer
For the export market, the Schaltwerk is to be used with an external power adaptor as it
doesnt incorporate its own integrated mains supply. The connection for the adaptor
is indicated "9V DC" and is located to the right of the 5 DIN connectors (MIDI
On request, we may deliver a 115V external transformer with "euro" type mains
plug. Other mains voltages require that you purchase the appropriate adaptor in your own
country. Only adaptors with a VDE or equivalent technical agreement are recommended. The
output voltage should be around 9 Volts (ranging from 7 to 12 V.), unregulated DC, with a
minimal output current of 500 mA (0.5 Amps). The polarity of the output plug should be:
external ring = ground, inner ring = +7..12V. If the polarity is inadvertently inverted,
the Schaltwerk will not function but wont be damaged as there is a built-in
The Schaltwerk is functional as soon as the adaptor is plugged into the mains outlet,
and the low voltage plug is inserted at the back of the machine. There is no supply switch
4.1.2 Version with built-in 230V. mains supply
The Schaltwerk will enter in function as soon as the mains connector is hooked up at the
rear of the machine, the mains plug is inserted in the outlet, and the mains switch is set
4.2. MIDI connection
4.2.1. MIDI-IN connection
The MIDI inputs 1 and 2 are dedicated to the control and synchronization of the
Schaltwerk by external MIDI real-time messages, remote control of specific functions and
effects trough MIDI (effect menu, etc.) and reception of MIDI Sys-Ex Dumps.
The MIDI inputs have no merge capability, i.e., The incoming MIDI information is not
retransmitted to any of the MIDI outputs. If the data directed at the Schaltwerk should
also be available to other MIDI devices, it is advised to use a MIDI-Thru-Box with several
outputs. Should this MIDI data be merged with other MIDI information to jointly drive the
same device, then an external MIDI-Merger is needed:
4.2.2. MIDI-OUT connection
The MIDI output 1 is dedicated to the Schaltwerk generated MIDI information and to the
Schaltwerk issued MIDI-Real-time messages.
To date, the MIDI output 2 is restricted to the transmission of Schaltwerk issued
4.2.3. MIDI in-out connection
MIDI IN 1 and MIDI OUT 1 are thought as the main link with the outside world.
In future software versions, MIDI IN 2 and MIDI OUT 2 are planned to be part of a
communication network between various machines.
To control/synchronize with a square signal.
Can be configured as input or output.
Normally, the SYNC connector of the Schaltwerk is configured as an output, i.e., A
square signal is available at this connector. Sensibly, the device at the other end must
be configured as an input (receiver) on its SYNC connector.
To use the Schaltwerk as a SYNC receiver, its SYNC connector must be set as an input,
and the other device must be set to transmit (output) a SYNC signal.
The SYNC-signal is a simple square wave with a range of 0-5 Volts.
It is also possible to use an ordinary LFO from an analog synthesizer
as a clock source.
This way, it is possible with the appropriate shaking in the control
signal to get a "floating groove" in the Schaltwerk timing.
- Note that in case of coupling with other devices, if both devices are set to input or
output, there wont be any effective coupling.
4.4. CV/Gate connection
8 x CV1 (i.e., for pitch or controllers)
8 x CV2 (i.e., for velocity)
8 x Gate
- The CV option does not work separately from the data sent in MIDI, but in parallel and
Despite the limitation of the CV values being linked to their corresponding MIDI values,
the number of voices under control of the Schaltwerk can be almost doubled.
- The 8 CV1 outputs are linked to the parameter "Note Number-Track/Step", with
CV1-1 to CV1-8 corresponding respectively to Track 1 up to Track 8.
- The CVs are covering a range from 0 to 5.6 Volts.
- The curve characteristic of the CV follows a Volt/Octave ratio and is primarily
dedicated to the control of the pitch.
- The relation between the note numbers and the output voltage is: Note #36~100 = 0~5.6
- Going below (note # 0~35) or above (note # 101~127) the allowed range will clip the
output voltage to the lowest/highest voltage possible, issuing valid CVs, which are
nevertheless overlapping with the note range 36~100.
5 Front panel controls
The Schaltwerk sports the following controls:
What is the Schaltwerk
The Schaltwerk is a complex sequential event generator for producing not only MIDI data
but also Trigger, Sync and CV signals for analog systems.
The Schaltwerk does not contain any sound generator but is simply a signal generator for
MIDI receiving devices (MIDI equipment), for CV/Gate receiving devices, and a tempo
generator for devices equipped with a SYNC input.
The Schaltwerk offers effectively most of the aspects a MIDI software sequencer
presents, but due to the strongly reduced variety of functions a direct comparison is not
possible. In comparison with software sequencers, the Schaltwerk takes advantage of this
reduction by offering much more dedicated controls for a direct access to all operations
and the possibility to alter almost any parameter in real time.
At best, the Schaltwerk brings to the mind the Drum Page of the Software sequencers
6.1 Main structural sections: General
A fairly good knowledge of MIDI is used here. To keep control and not get lost, we
recommend you to go through some specialized literature on the subject, otherwise you will
not be able to get the most out of MIDI and particularly of your Schaltwerk.
A small selection Is listed in the Literature chapter.
For Basic knowledge, please refer to chapter 10, MIDI 1.0 specifications: from page
This is the smallest organizational unit in the Schaltwerk and defines a MIDI event.
6.2.1 Step/Event Types
Generally it will be a Note-Event. The Schaltwerk offers nevertheless the possibility to
generate almost any type of meaningful MIDI message.
For example, it can also be:
- Controller Events
- Such events are defined as Event Type, with their associated MIDI channel value, and one
or two associated data values.
- In the example of a Note-Event, there will be the definition of the pitch (note value),
and the definition of the note level (note velocity).
- For controllers, there will be a Controller Number (controller value).
- The Monophonic-Aftertouch is defined as a value
- The Polyphonic-Aftertouch is built around a note value and its associated pressure
- Program-Change is a program select number.
- The Pitch-Bend is made of two linked values; practically, one of them is always set to
Apart from defining in which order the MIDI events are organized, the steps are
controlling the duration of the event. (It is important to note that an event is actually
2 events tied, namely SOUND-ON at the beginning of the step, and SOUND-OFF at the end of
Beside this, there is also for each MIDI event another important aspect, if not the most
important stylistic attribute the Schaltwerk offers, namely, the fact whether each
prearranged MIDI event will be sent or not.
There is for each step a dedicated LED, indicating whether the related event at that
particular place in the row, will be sent (LED on) or not (LED off).
With that, it is now possible to make quick changes on the fly, as each step has also a
button dedicated, with which the event can be switched on or off. These push-buttons work
in a toggle manner, that is, if a step is currently switched on and the button is
depressed, the step will be switched off, and vice-versa.
In special editing modes, these dedicated Step buttons can also be used to call the step
The Step LEDs have some additional functions,
as the report of the currently active step = run through or blink very slowly,
The report of the Step edit values (related notes & velocity values) = fast
And the step position in Rec-Step-Mode = slow blinking.
In the upper organization level, 16 steps are grouped to make a track.
6.3.1 Global Track parameters
A track has several parameters which are global for the 16 steps, these are:
The MIDI Event Type,
its MIDI channel,
the base note number,
Start & End steps,
Run mode, and
various effect parameters
All 16 steps of a track share this common set of parameters, an
individual setting of each step is not possible. Nevertheless, this set of global
parameters can be different for each track.
6.3.2 Track Select button
For that purpose, each track possesses a Track Select button and an associated LED.
Through them, a track can be immediately selected, as it is confirmed by the illumination
of the appropriate LED. All the track edit operations apply to the track whose LED is
currently lit. (In special edit modes, there can be several tracks selected
6.3.3 Track mute button
This second main control available for each track is the On button. Its use is a matter
of taste and depends also on the mode setting. The function is always the same: The tracks
whose On LEDs are lit will transmit their MIDI data, when their LEDs are off,
the tracks will run as usually but no data is transmitted. Switching On and Off is
accomplished by pressing the appropriate On button.
The well-known Mute function is available if, while in the Edit Mode menu,
[mutemode:multi] is selected, and will act as a solo function when [mutemode:single] is
A complete setting for all 8 tracks, together with their 8 x 16 steps and all related
parameters constitute a Pattern.
6.4.1 Pattern number/memory
The Schaltwerk contains 130 pattern storage locations,
128 non-volatile pattern locations,
1 Edit-Pattern, and
1 pattern clipboard
6.4.2 Pattern edit
The pattern to edit is the one that is currently appropriate and can be edited.
When you call back one of 128 patterns, it is not possible to edit it immediately, it
must be first copied into the Edit-Pattern.
The Edit-Pattern can be now modified at your will (naturally, also in real-time), and
saved into one of the 128 available locations before switching off the unit, should it be
The Edit-Pattern is changed at each working step, i.e., completely overwritten (when
selecting a pattern, 1~2, 1~2~3~4, or Song-Mode play), so that its content is volatile.
6.4.3. Pattern Clipboard
The Pattern clipboard is almost the 129er pattern location, in which the
Edit-Pattern can be temporarily stored. This is, for example, necessary to keep a freshly
edited pattern while a free location to store it has to be found. Recalling one of the 128
patterns will inevitably destroy the Edit-Pattern. Another use for the clipboard is to
compare the original pattern with the edited pattern, etc.
A separate button is dedicated to the Pattern Clipboard (see 14 -- Global real time
keyboard). When it is pressed, the currently edited pattern is copied into the clipboard.
To confirm that the clipboard is now full, its LED blinks.
To copy the content of the clipboard back into the Edit-Pattern, press the clipboard
button once more. The pattern is now back into the Edit-Pattern, the LED goes out and the
clipboard is ready to receive a new pattern.
6.5.1 Capabilities of a song
A song is a succession of patterns.
This sequence can be made up of a maximum of 128 patterns, called automatically one
after the other, and where each pattern recalled can be played repeatedly up to 127 times.
Not only will the song data instruct which pattern should be played and how many times,
but will also take care of the variations in the prearranged On-settings.
In addition, it is also possible to jump to any position within the song to realize
6.5.2 Song number/memory
The Schaltwerk holds a maximum of 16 songs of 128 steps each (these 128 song-steps are
not to be mistaken with the 16 track-steps)
7 Users manual
7.1 Powering the unit
At power-on, the unit will show the following message on its display:
Vx.xx is a synonym. Here should appear the actual software release
In place of "[date]" you should read a date in the
format day/month/year, such as 210397 for the 21st of March 1997.
- At the same time, pattern 1 is loaded in the Edit-Pattern buffer of the Schaltwerk hence
the illuminated LED belonging to pattern 1. All other LEDs, functions and parameters
are reflecting the state in which pattern 1 was configured previously.
- Pattern 1 is the default pattern at power-on.
- The respective step positions (at power-on, step 1 from all rows) will blink slowly. The
running indication is flashing faster at the current step position when the sequencer is
7.2 Menu structure
The organization of the menu structure of the Schaltwerk relates to the 16 buttons
located nearby the rotary encoder. Since the device is not equipped with LEDs to
indicate which functions are activated, the corresponding parameters are shown on the
second line of the LCD display.
The editing of parameters applies to single or multiple tracks. In order to edit the
tracks, they have to be activated through the 8 Select upper buttons.
The confirmation of the selected tracks can be checked on their related
Select LED and by the message in the upper row of the display.
- This means, for example, that track 2 is now selected and its set of
parameters is available for editing.
When no select LED is lit, there is no track selected. The display will
No Trk. selected
- In most menus, there are sets of related parameters, known as parameter groups. These
can be accessed by pressing several times the related menu button. Individual parameters
are accessed in rotation.
7.3 Menu overview
Here is a first glance at the various menus (a.k.a. parameter groups) available.
In forthcoming software releases, the various menus may be expanded trough the addition
of related parameters.
The order of the buttons located nearby the rotary encoder follows a numbering sequence:
from 1 (upper left) to 8 (upper right), and from 9 (lower left) to 16 (lower right).
The main menus of the parameter groups are:
- See chapter 5 - Controls of the front panel, page 7, drawing, lower right, close to the
- 16 buttons for menu selection.
- The buttons located in the first row (1-8) apply to all currently selected tracks, to
the exception of buttons 1 & 2 (dec/inc).
- (1) step left / decrement (one step to the left, select a particular step, also required
in most menus)
- (2) step right / increment (same as (1), but to the right)
- (3) Chn Event
- The MIDI channel of the related MIDI event
- The type of related MIDI event
- The program number
- (4) Note
- The global value of the MIDI event
- The number applying to individual steps
- The velocity applying to individual steps
- The global Step time for all 16 steps
- The global Gate time for all 16 steps
- The global delay for all 16 steps
- The last step in the track
- The first step in the track
- The play mode of the track
- The next menu items, which are located in the second row (buttons 9 to 16), do not apply
to a specific set of tracks but are global in their action. The track selection displayed
is irrelevant in this case.
- (10) Reserved for future extension
Patt.End > XXX
- The 8 buttons with LEDs for global real-time functions (from left to right):
- See chapter 5. Controls of the front panel, page 7, Drawing, lower left nearby the
- Buttons with LEDs for global real-time functions
- (17) START button (no display indication): Start of the Schaltwerk from the respective
Track begin, and sending of the MIDI real-time "start" message.
- (18) STOP button (no display indication): Stop of the Schaltwerk, sending of the MIDI
real-time "stop" message.
- At the first activation of this button, the Stop LED is flashing. This is to inform the
user that the button can be pressed a second time.
- At the second consecutive activation of the button, the LED stops flashing and becomes
permanently ON. Simultaneously this command will clear the internal buffer of the
Schaltwerk (i.e. the chord trigger buffer & arpeggio buffer) and issue an
all-notes-off message, for all 16 MIDI channels, at MIDI out 1.
- (19) Cont. (continue) button (no display indication). Start of the Schaltwerk from the
current position. Transmission of the "continue" MIDI real-time message.
- (20) Tempo button. Setting of the Schaltwerk internal tempo (50~240 BpM - Beats per
Minute) (This parameter is stored with the Pattern)
- By pressing the tempo button more than once it is possible to activate/deactivate the
Master-Tempo function (LED on/off). When active, the LED is on. When inactive (normal
mode), the LED is off.
- The tempo is stored along with each Pattern, and is restored when a pattern is recalled
from memory. This can be sometimes annoying, especially in the case of linked patterns
(1~2, 1~2~3~4, and Song-Modes), where the tempo will change successively according to each
pattern recalled. If the Master-Tempo function is activated, the Pattern related tempo
will not be accounted anymore; the currently set tempo will be used instead.
- (21) Reserved for future extension
- (22) Reserved for future extension
- (23) Clipboard pattern memory
- (24) Enter/OK button for functions requiring an explicit confirmation
- The buttons (17)~(24) and their related functions can be activated from any editing
situation. Displaying & editing the tempo will simply overwrite the current message in
- (25) Rotary Encoder. To change the values: clockwise = increment,
counterclockwise = decrement.
7.4 Menus in detail
7.4.1 Step left/Decrement
One step to the left, specifies a precise step - used additionally in
many menus. i.e. decrease a value.
7.4.2 Step right/Increment
Same as above but to the right and value increase.
7.4.3 MIDI Channel/MIDI Event
Pressing this button may bring the following message:
- As stated previously, the track(s) you want to modify must be specified prior to any
- You should thus press the Select button of the track(s) you want to edit
If for example, you press the Track select button of track 2, you will
get the following message in the display:
("m" relates to the Mastertrack, which, if active, is
indicated by a capital "M" in the display)
- Press now, once more, the button (3) of the menu:
If for example, the channel is set to 10 (usually assigned to drums),
this value can be changed to any other in the range 1~16, with the rotary encoder.
If you press the menu button (3) once again, you will see:
In the present case, the type of MIDI event selected for this track is
- With the rotary encoder the Setting can go through the following list:
- "NoteEv" - Note-Event (Note-On + Note-Off)
- "PolyAft" - Polyphonic-Aftertouch
- "Contrl" - Controller
- "MonAft" - Monophonic-Aftertouch
- "PitchB" - Pitch-Bend
One more press of this button will bring:
Access to this parameter was added from version 1.1 upwards. Machines
with version 1.0 do have an "OFF" as normal condition.
- If you are the owner of a version 1.0 machine that you have updated to 1.1, you should
check this parameter for all 8 tracks of each pattern to ensure that it is effectively set
to "OFF", or set it to "OFF" otherwise.
- With this parameter, you can now set a Program-Change message and simultaneously
transmit it on the MIDI channel selected for that track. (A setting of 1~128 = MIDI
- By calling (selecting) a pattern, its preset Program-Change is sent out automatically.
- Care should be taken not to send more than a single Program-Change per MIDI channel.
Multiple sends will override the previous ones, only the last one being effective. If you
get the wrong sound when recalling a pattern, the cause might be that different
Program-Changes in multiple tracks have been set with the same MIDI channel value.
- Program-Changes are putting a load on the sound generators, especially if fast streams
of notes are simultaneously playing. Then, depending on the device, slight or even strong
timing problems can occur, causing disturbance in the sound.
- The behavior of this function is strongly dependent of the sound generator used. Its
functioning cannot be guaranteed to 100%, and in extreme cases, such as linking of
patterns (1~2, 1~2~3~4, or Song-Modes), it should be left OFF if problems subsist.
7.4.4 Note Number - Track/Step
Besides being instructed about dealing with MIDI data, the information
still needs to be expanded in some practical messages, among which:
- Note-Events - Which note (pitch) to deal with.
- likewise for the Polyphonic-Aftertouch.
- Which controller is the information for, and whats its controller number.
- For Program-Change there is a location with its particular number.
- For Pitch-Bend, the actual pitch inflection value must be set (a value of 64 is the
neutral value, and thus equates to no Pitch-Bend)
- For Monophonic-Aftertouch is this value unimportant.
- This value is adjusted in the Note Number Menu.
This brings us to the following message:
As the value 36 appears, a "C" will be sent.
- Of course, the name of this value depends on the MIDI Event Type, In case of a
controller, this will be "controller number" and the indication "C"
will be superfluous. For simplification, this information is always displayed. It is
relevant for note values only, which is the case in 99% of applications. For events, other
than Notes, dont be confused by the note name displayed, and only take into account
the numerical value, "036" in this example.
- This global value is effective for all 16 steps of a track.
- By multiple press on the menu button, you should come to the following indication:
- With this feature, the Schaltwerk doesnt offer a global note number for each
track, but rather a note per step. These individual note number values are added to the
global value. When dealing with notes, it works as a transposition.
- The default value should always be 0, which is also a "no transpose", making
now the global note number value effective.
- To adjust these values, you should also take care of specifying for which of the 16
steps the setting is currently done.
- It is make use of the buttons (1) Step left/dec. , (2) Step right/inc. or directly the
corresponding Step button. In these menus, the 8 × 16 Step buttons are not used to
(de)activate the steps, but simply to select them.
- To help you locate which step is currently selected, its LED will flash at a fast pace.
- To get an idea of how this system works, you could choose a pattern without any step
selected, and select them alternatively with the +/- buttons and the rotary encoder.
Furthermore, the step position is also shown in the display:
In this example, the step position 1 is selected.
"SNo" is the abbreviation of Step Note, after the colon comes
the value of the Note number.
- These values can be set separately for each of the 16 steps of a track.
7.4.5 Velocity Track/Step
Besides instructing which MIDI event, note/controller/etc. is handled, this information
must be expanded into a threefold data stream.
Namely, for Note-Events, their velocity (volume level) should also be defined.
For Controllers, their controller value
For Polyphonic & Monophonic-Aftertouch, the strength of the aftertouch.
For Program-Change messages is this parameter useless.
This value is located in the Velocity menu, with the following display:
The velocity value is 127, which translates to a level of 100%.
- This global value controls all 16 steps simultaneously.
Similarly to the setting of Note numbers, the Velocity value can be
adjusted for each step.
- The Step Velocity is not added to the value of the Global-Velocity setting, but is
rather multiplied with it to get a useful result.
- This way, the multiplication of 100% by 100% results in 100%. If one or both of the
input values are smaller than 100%, the end result will also be smaller than 100%.
- So that a crossed master/slave rule is established through this function.
- These values can also be set independently for each of the 16 steps of a track.
7.4.6 Step, Gate & Delay time
For each track, it is possible to adjust the time spacing between the events in
MIDI-Clock units (Din-Sync units). This setting results in defining a tempo master
reference, obtained by dividing the MIDI clock or the internally generated tempo clock.
The Step time is the duration between two similar events, i.e. between two successive
Additionally, for Note-Events, the time between Note-On and Note-Off (note length) is
For example, the Step time could be set to:
- The "006" value means that, altogether, 6 MIDI clocks should elapse before the
next event occurs, i.e. going a step further in the track.
- The indication "1/16 refers to musical time duration notation, where 6 MIDI clocks
are defined to be value for 1/16 of a bar. To ease the musical use, this notation is used
- Similarly, the Gate time is the duration between the Note-On message and its
accompanying Note-Off message. This parameter is only relevant to Note-Events.
- With the Delay time it is possible to define for each track a delay interval.
- This time will elapse after a start message (and only then), when the sequence should
- This delay will not be summed up for each round of the track, otherwise it would
increase over time.
- So that, while the sequence is running, you can simulate a different start time for each
track by changing this value on the fly.
- In the latter case, the delays will be added, and generally, any change to parameters in
these menus will alter the true predictability of the values.
- To ensure a totally predictable result, the sequencer must be stopped and restarted.
- All 3 parameters are global and valid for all 16 steps of the track.
7.4.7. End step/Start step/Run mode
In this menu, the last and first step of a track can be set. After reaching the last
step defined, the sequence will jump to the first step defined.
The track will start playing from step 8 up to step 15, and then loop
back to step 8.
- The desired operation mode can also be set for each track.
Where "X" can be any value in the range 1~5.
Where "X" can be any value in the range 1~5.
Where "X" can be any value in the range 1~5.
Where "X" can be any value in the range 1~5.
- The indications Up and Down are taken from the arpeggio vocabulary, where they were
defined initially. With these modes it is easy to create very interesting arpeggio-like
- With Alternate, the first and last step will be played twice each, with Pendulum mode,
they will be played only once.
- Beside the basic pattern-play modes (Up, Down, Alternate and Pendulum), various modes
can be chosen. The Schaltwerk can automatically transpose the tracks: For a 1 octave
range, after playing the track the "normal" way, this will be repeated with a
note offset of +12 (1 octave). Followed again by the original tone range and so on. For 2
octaves, the order is: original, original +12, original +24, original, etc.
- These functions inspired by the arpeggio world do offer here a similar and excellent
- For the time being, the Up/Down mode known in arpeggiators, is not available.
- Alternate and Pendulum modes go through a complete run, back and forth, before
transposing up or down the next progression.
7.4.8 Effect menu
In this menu, various functions of the Schaltwerk are joined, automated and made widely
controllable, while offering among the most interesting functions of the machine.
It is important to understand that all effects are realized with the resources of the
Schaltwerk described until now, whereby all resources remain available and all kinds of
intervention are always possible.
As you could activate these effect macros separately per track, you are in control of,
not only one, but up to 8 Arpeggiators / Chord- Triggers / Gaters / Transposers /
To date, 6 Effect macros are available
To the exception of the Gater, all of these effects combine their parameters with MIDI
messages, so that the input for the incoming MIDI data should also be specified.
"IN1" for MIDI input 1
"IN2" for MIDI input 2
"IN12" for MIDI inputs 1 and/or 2
"OFF" for neither input, i.e. the function is disabled
For the Gater there is no ON/OFF setting
Beware that only MIDI events sharing the same MIDI channel as the related tracks are
18.104.22.168. Arpeggiator Modes
- To say that the Schaltwerk includes an arpeggiator is not exactly right.
- But rather, that the sequence control of the individual tracks is applied to the
incoming Note-Events, so that arpeggio-like effects are rendered.
- Furthermore, the notes of the arpeggio are directly put into the step note memory
location, so that they are immediately processed, and can be individually (de)activated.
The difficult task of developing simple arpeggiated polyrythmic structures can be carried
- Qualify this effect as an arpeggio was the closest word available at hand.
- You should take note that this effect is not a cleverly custom designed arpeggiator but
rather a byproduct of the Schaltwerk concept.
- You will perhaps miss some typical arpeggio-like functions, but the wide offering and
possibilities of functions previously unavailable in this form, will present a fair match.
- To use this effect, you connect a master keyboard at the input 1, make it send its data
on MIDI channel 1, and set the same channel to a free track of the Schaltwerk i.e. track
- To proceed, you adjust the note number to 0 (zero), so that the arpeggio sequence will
not be transposed yet, something you can change later for an even more pleasant effect.
- In the effect menu you should set the arpeggiator to MIDI input 1.
- You can now start the Schaltwerk and press a key on the keyboard.
The note will play repeatedly at the Schaltwerk tempo. In accordance,
the arpeggiator will set the first step, so that you should normally hear something.
- When you release the key, the sound stops. You can check that the note in step 1 is
still available. Releasing all the keys will switch back to step 1.
- If you now press 3 keys, you will see the position indicator run from step 1 to step 3
- Therewith, to hear the complete arpeggio pattern, the steps 2 and 3 must also be
- Release now the keys successively and the running span of the Step cursor will shrink
accordingly, down to step 1.
- If you set the arpeggiator to OFF while holding some keys, their notes will continue to
be sequenced, even when releasing them.
- When you take a look at the End Step parameter, this one is now set to 3.
- If you now check the 3 note values, these are exactly the last ones played on the
- The arpeggiator is realized through the simple system of checking an incoming note and
assign it to the next Step position available. The End Step counter is also incremented by
1. This system works up to 16 notes.
- By releasing a key, the End Step counter is simply decremented.
- The Step-Note values remain unaffected but stop playing because of the decrease in the
End Step counter.
- Not only are the Step Note values taken into consideration but also their velocities
which are assigned to their respective Step Velocity locations, to get a very lively
- If no new notes are received while the arpeggiator is active, all Step Notes &
Velocities are held and can be further processed.
- You can, for example, set the End Step to a higher value and the previously hidden notes
will reappear in the arpeggio sequence.
- You can also try to (de)activate various steps to see what kinds of polyrythmic patterns
are possible with this stylistic approach.
- You can also change the operating mode of the track from "UP" to "UP-1
Oct." or "UP-2 Oct., etc.
- Doing so, will also make the arpeggiator musical results correspondingly complex and
- A hold function is available for the arpeggiator through the sending of a
ArpHoldController (see MIDI-Remote-Menu). If an "ON" message (controller value
higher than 63) is received on the appropriate MIDI channel, the arpeggio will be held as
long as the message is effective. New notes wont be taken into account as long as an
"OFF" message is not received.
- The "ON" message is indicated in the menu by a "!" sign at
the end of the line.
22.214.171.124. Record Step mode
- Another mode similar to arpeggio, but offering an entirely different set of effects, is
- With this mode, the Step Note values and velocities of the previously described tracks
will be continuously updated with the notes received from the MIDI input 1.
- After recording each new note in a Step-Position, the Record-Position will move to the
- What follows are only suggestions. You can for example record a sequence in Down-Mode,
what will of course produce entirely new effect types.
- With this effect, the incoming notes are incorporated in the sequence, reminding the
operating mode of typical software sequencers, where this function is often described.
- On one hand, the Schaltwerk can be used as a simple and quick "step-by-step"
sequencer to be played from a MIDI keyboard.
- On the other hand, this effect can also be used dynamically to mimic the Record-Overdub
function of a Track-Loop sequencer.
- The position for the recording of the next note is indicated by the slow (but faster
than the position cursor) flashing of the related Step LED.
- In addition, it is also possible to move manually through the steps, without recording a
note, by pressing the Step Right/Inc button.
- All of these functions are located in the Step-Rec-Menu whose button is shared with
126.96.36.199. Overdub Record
Another mode to transfer individual notes from the MIDI input to the
Step-Memory is the Overdub-Mode.
In this mode, in contrast to the Record-Step-Mode, the sequencer
behaves "normally" and attempts to catch the "separately played" notes
on the fly and assign them to the current Step position, while running.
188.8.131.52. Transpose mode
- One further press on the Effect button brings the following message:
It means that the transpose function for the selected track is
currently switched off. Of course, you can, as in the previous menus, set the function to
achieve a transposition of the Note-Events with the data coming from MIDI in 1, MIDI in 2,
- In this context, transposing means that the value of the note coming at the activated
MIDI input will be added to the value of the present note, if their MIDI channels match.
- It is recommended to adjust the keyboard or any other MIDI-note generating device to a
very low range (usually through its own transpose function), otherwise the sum of the note
numbers will quickly reach very high values, translating to very high pitched notes.
- All effects have a lower processing priority than the primary tasks of the Schaltwerk,
so that under high load conditions, such as fast note changes or great amount of incoming
MIDI data, noticeable delays could be heard.
- Stricto sensu, the hereabove described transpose function only applies to tracks 1 to 7.
The transpose function of the Master Track (8) is working in a special way.
- With the present transpose function, it becomes very difficult to get a simultaneous
transpose of multiple tracks with different MIDI channels, as it will be the case with
most multitimbral MIDI setups. To do that, you should own a Master Keyboard able to send
the same note on multiple MIDI channels at once, a feature you wont usually dedicate
entirely to transpose the tracks of the Schaltwerk.
- To circumvent this shortcoming, instead of offering the same transpose function as for
tracks 1~7, the Master Track, when activated, can transpose all other activated Tracks.
The tracks you wish to transpose must have their various transpose parameters (MIDI
channel, Input) activated, to the exception of the transpose value which becomes
irrelevant as this information will be carried from the Master Track. It should be noted
that there wont be a double transposition as you were perhaps presuming.
- The transpose of master track is not linked to the transpose values of the other tracks,
but replaces them.
- The next press of the Effect-Menu button will bring you the next message:
- To the exception of the Note-Event where a Note-Off will be sent after its related
Note-On, all other Event Type will send only their own event data.
- If the Gater is activated, with an Event Type other than a Note-Event, at the place
where a Note-Off would appear, the same Event Type as the one selected will be sent with a
fixed value of zero.
- Setting the Event Type to Controller and the Note Number (in fact the controller number)
to 7, which is the standard MIDI volume controller, sustained notes played on the same
MIDI channel will be minced.
- These notes can be generated by the Schaltwerk itself or come from any other source, in
which case a merger is required, as the Schaltwerk will not retransmit the MIDI events
present at its input.
- In this example, the Gater works as a MIDI-triggered Noise-Gate. Producing sustained
chords, rhythmically chopped, without retriggering the keys, are not a problem anymore.
- Other applications can be done very easily by selecting a different Controller number or
a different Event Type.
184.108.40.206. Chord Trigger
The next press of the button will bring:
- This effect is also dependent on external MIDI Note-Events and requires to have a MIDI
- The Chord-Trigger beats the sustained notes automatically according to the track rhythm.
- The note values are transposed with the values taken from the respective steps and their
velocities are multiplied by the steps ones accordingly.
- At first sight, you can easily differentiate the Chord-Trigger functions from the note
transposition and velocity multiplication functions also found in the Gater. In contrast,
no controller value, nor controller value zero are offered, but for each step a whole
packet of Note-Events can be sent. This function is restricted to Note-Events, while the
Gater function can rhythmically control almost any type of MIDI event.
- Contrary to the Gater, the sound is retriggered with the Chord Trigger and does not
hold. Furthermore, a MIDI merger is not necessary as the Note-Events are directly produced
by the Schaltwerk.
- You can experience timing inaccuracies and a shaking feel if a huge quantity of
Note-Events must be produced in a single step. In the Gater there is a limit of 2 events
per step per track, while the theoretical limit for the Chord Trigger is of 2 × 128
Note-Events per step.
- A hold function is available through the sending of the Chord-Hold-Controller (see page
26). While an ON-message is received and active, so will all received Note-On messages
(and their corresponding Note-Off messages) until nothing else is registered, or an
- The "ON" message is indicated in the menu by a "!" sign at
the end of the row.
- The Arpeggio effect and Chord trigger are sharing the same cache memory where note
messages to be sent are stored.
- The Hold effect of the Chord-Trigger also prevents the forwarding of new notes in the
- On the other hand, the Arpeggio-Hold message has no influence on the Chord mode, so that
only the transmission of incoming notes to the step positions will be locked. Therefore:
Chord-Hold-On: No further notes are stored in the cache.
- By Note-On, and we mean newly pressed notes, these will not be accepted anymore in the
- By Note-Off, we mean released keys, provided that they were struck previously, so that
their state is valid as they were effectively played.
- Chord-Hold-Off: All Note-On and Note-Off messages are accepted again in the cache
- Through purposeful sending of Chord-Hold-On/Off messages you can, for example, build
stacks of complicated chord patterns.
- Turning off the notes can be obtained by sending the corresponding Note-Off messages or
else by pressing the Stop button twice.
- The cache memory (stacking of notes via the cache memory with the help of the Chord-Hold
message) is also working when the sequencer is stopped, and allows you to tweak the chord
patterns in dry run conditions.
220.127.116.11 Effects combination
- With the techniques seen in the menus, almost all effects can be activated
- Gater-Mode & Chord-Mode are mutually exclusive.
When one of these modes is activated, the other one is not available anymore. If the
currently used mode is no longer needed, it has to be switched off, before access to the
other one is possible.
- As some parameters are common to both effects, editing one of these effects could
overwrite the data in the other one.
- While it is normally avoided to manipulate the parameters this way, this can bring very
interesting results anyway.
- It is however important to know with which priority the effects are processed.
- The processing order of the effects is: The Arpeggio comes first, then the Record-Step,
the Transpose calculation follows, and the Overdub capture is closing the list.
- Both the Gater and the Chord-Trigger run from the first effects mentioned in the
previously explained independent settings.
- A note change in the Chord-Trigger function will not be effective on the chords already
struck, but from the next occurrence onwards.
7.4.9. Edit/Mute mode
This menu handles the behavior of the Track-Select & Mute buttons.
Normally, you will select or mute a specific track by pressing its accompanying button.
This is the "Single Mode" for which these buttons were planned.
- Changing this mode to "multi" allows you to activate multiple buttons
simultaneously. This is the default mode for the Mute buttons.
The third possibility is:
- Where all buttons will be selected to the exception of the one just depressed. This
setting of the mute mode is corresponding to a Solo function.
- You may find another mode such as "Single" very useful too.
- With "Multi" you can select and edit multiple tracks at once. In this case,
the edited values will be identical in the different tracks.
- It offers you a simple and fast way of realizing horizontal editing, without calling,
and editing each track repeatedly.
- Cleverly changing and combining the various edit modes can spare you a lot of work.
To date this button is unused. It could be assigned to new functions to be implemented
in forthcoming versions of the software (such as V2.XX, where XX replaces the actual
release number of a version 2 software). The present device will of course receive the
appropriate text layout on its front panel.
For all users of previous versions, the update package will include the stickers for the
casing. These will be applied at the remaining free locations of the front panel.
7.4.11 Track tools
This menu is here to simplify your work with tracks.
With it, you can:
Copy a track to another
Initialize a track i.e. quickly set its default parameters.
- Select this menu, then press consecutively on the Track Select buttons 1 & 2.
Additionally, an entry cursor will blink in the display.
- Simultaneously, the LED of the OK button is flashing to show clearly that the completion
of the task requires the activation of this button. When the OK button is pressed, the
appropriate function is executed and a report confirming the completion is shown on the
lower line of the display.
- The above procedure is valid for swapping tracks. This is done with the Exchange
function whose operation is identical to the Copy function
- To initialize a track, it should be selected with one of the Track Select buttons:
Will initialize Track 5.
7.4.12 Pattern tools
The four pattern-bank select buttons are used jointly with the 32 pattern buttons to
select any of the 128 available patterns. (4 × 32 = 128)
Copy and Exchange of Patterns share the same approach as the Track functions.
In addition, it is allowed to
- The temporary working memory is stored in one of the 128 non-volatile Pattern memory
- Contrary to software version 1.0, the Store function is now located first in the menu
selection, and is thus immediately available.
- In addition to these menu functions, it is also possible to dump in SysEx format from
MIDI out 1, any one of the four Pattern Banks (1~32, 33~64, 65~96, 97~128), or any single
Where [VALUE] can be any of:
Bank1 ~ Bank4
or pattern number
001 ~ 128
- These dumps can be stored with any suitable program, such as a conventional sequencer
program, and archived for later use.
- Should these Dumps be sent back to any MIDI in of the Schaltwerk at any time, they will
be transferred to the appropriate Pattern memory locations where they will replace the
previous data, as long as no failure occurs during the transfer.
- You should take note that sending back Dumps of one or several Patterns/Songs into the
Schaltwerk while it is running may strongly affect its timing accuracy. It is therefore
recommended to stop the sequencer before this operation. In extreme cases, it is possible
that the data dumped will not be received correctly. This will be displayed as a failure.
- When a faulty transfer occurs, the memory locations related to the Pattern/Song data
just sent, will always be only partially updated. Be sure that there are no illegal values
lying in the memory as there could be a mismatch between old and new Pattern/Song data.
7.4.13 Song tools
All of these functions work similarly to those available for Patterns, with the
difference that there is a maximum of 16 songs. To select them, there are 2 Song-bank
buttons associated to a row of 8 dedicated Song Select buttons. (2 × 8 = 16)
7.4.14 Song menu
The Schaltwerk offers 16 Song memory locations.
When the Song-Mode is desired, one of the Song-Bank or Song buttons must be pressed, and
as their LED's are lit, the Song-Mode is now enabled.
To quit the Song-Mode, press one of the active Song or Song-Bank buttons. Both
LEDs will go out, and the Song-Mode is now disabled.
Caution: To play in Song-Mode the Pattern-Edit buffer is used and overwritten. It is
therefore recommended to avoid activating inadvertently the Song-Mode while valuable
Pattern data is held in the buffer. The latter should be saved in a Pattern memory
location prior to the execution of the Song-Mode.
Each Song is made of a list defining the Pattern sequence chain. This list will be
executed according to:
Play from the beginning with Start
restart from the present position with Continue
execute the current Pattern content
repeat it a number of times as predefined
take care of the individual mute switches status
Each Song has memory for 128 Pattern steps.
The pattern defining each Song step can be repeated up to 127 times.
Each Song-Step can store the individual ON/OFF track mute status for all 8 tracks in
each Pattern. This can be different from the default value of the Pattern.
At any location in the step sequence it is allowed to have
an end marker to stop the song
a jump instruction
All changes are done in the Song-Edit-Buffer only. Should you want to keep these
changes, it is then necessary to explicitly store the data in one of the 16 Song memory
Recalling a Song will load it in the Song-Edit-Buffer, overwriting its current content.
It is therefore recommended to save any valuable data present in this buffer as it is the
case with the Pattern buffer
The activation of the Song Seq. Menu leads us to:
18.104.22.168 Editing of the Song buffer
- The Song we are editing here comes from Song memory location 1 and is held in the Song
buffer. It will execute its first step by playing the pattern 1 twice.
- The instructions for Song1 are based on the data present in the Song-Edit-Buffer and
cannot be edited from this menu.
- To prevent an inadvertent overwrite of the Song-Edit-Buffer while in this menu, all song
buttons are disabled.
- The step position can be selected through the Step Left & Right buttons.
- Any Pattern can be directly selected with its dedicated buttons while standing at the
- The number of iterations each pattern has to play is adjusted with the rotary encoder.
- When the number of iterations is set to zero, it becomes an End Marker. The pattern is
then canceled, and the display shows:
- Should this End Marker be canceled, a repeat value different from zero is displayed, and
a pattern has to be selected.
- When a Pattern is selected, its track mute settings are recalled automatically.
- In each step, the mute settings can be modified freely. This "other" mute
configuration is nevertheless only effective in Song-Mode. The actual mute setting of the
pattern remains unaffected.
- When the number of iterations is set to 128, another special function is activated. In
this case, the pattern will not play 128 times, but instead, will execute a jump. The
target pattern is specified with the pattern buttons.
- the above display means that, at Song-Step 3, a jump to step 21 is taken, and that the
song execution will continue from there.
- While the song is running, it is possible to select manually a pattern and affect the
course of the song. The then selected pattern will play until the execution resumes to the
pattern defined as next step in the song. This operation loads a new pattern in the edit
buffer as would the automatic song sequence execution.
- All parameters such as mute, timing settings, etc. can also be edited during the song
22.214.171.124 Running song report
- Besides the simple display of the pattern number during song play, the next function of
the menu offers a monitor mode where the current song status is also shown.
The display will be very similar to the previous one:
Patt.001 > 002
- To the exception that the running song is now indicated by a right-shifting ">" character.
- The value appearing down right (002 in our example) is not the number of iterations
defined for the step, but rather an iteration down-counter going towards zero as the
pattern plays repeatedly.
- The rotary encoder allows you to alter this value on the fly, while the song is running.
The actual value as defined in the song remains unaffected.
- Doing so, it is possible to alter the number of times a pattern will play, even during
the song performance.
126.96.36.199 Inserting steps in the song chain
Two empty steps will be inserted at step position 3.
188.8.131.52 Deleting steps in the song chain
Two steps will be deleted from step position 3.
7.4.15 MIDI remote menu
Jointly with the control of the effect menu or the reception of SysEx messages, the MIDI
inputs of the Schaltwerk have several other uses.
Through the use of Program-Change messages, it is possible to select
the 128 patterns
or the 16 songs.
To begin with, the MIDI channels defined to receive the song or pattern selection must
be set. Furthermore, this is also the place to define different controller numbers for the
ArpHold and ChordHold functions.
Set the MIDI channels for XXX, as Pattern-Change, and YYY, as
- Usually, the channel numbers set for pattern and song changes will be different, as a
value of 128 pattern is using the full potential of different Program-Changes available in
a single MIDI channel.
- The next step is to define a correspondence table between pattern numbers and
Program-Change numbers. The same can be done for songs.
- In case of multiple assignation of Program-Change values, the foremost Pattern/Song will
- Press then the necessary Pattern (and Pattern-Bank) button(s), then adjust the rotary
encoder to link a Program-Change to that pattern.
In this example, the pattern 1 will be called upon reception of
- Similarly, by pressing a Song button (and Song-Bank button), that specific song can be
linked to a given Program-Change.
It is also possible to set a controller for the arpeggio and chord
These Arpeggio and Chord controllers are set to activate a hold
function upon reception of the corresponding MIDI message.
Usually, master keyboards are equipped with a set of pedals used for
Sustain and Sostenuto (controller # 64 & 66). If your keyboard is only able to manage
a single pedal, you can assign any other controller, such as the modulation wheel
(controller # 1) in replacement of the second pedal.
- In version 1.0 of the software, the controller values for Arpeggio and Hold were
predefined as Sustain and Sostenuto. From software version 1.1 onwards, these can be
freely defined by the user.
- All the settings done in this menu are automatically saved in non-volatile memory.
7.4.16 Sync menu
In most applications the Schaltwerk is working with its own timebase.
The Schaltwerk can however follow an external clock.
- incoming at the DIN synchronization connector.
- In internal clock mode, the Schaltwerk sends the following MIDI real-time messages:
- Start ($FA),
- Continue ($FB),
- Stop ($FC),
- and MIDI-Clock ($F8)
- at both MIDI outputs.
- A synchronized pulsed signal is issued at the DIN-Sync connector.
- In external MIDI mode, the Schaltwerk will respond to MIDI real time messages received
at its MIDI inputs 1 and/or 2.
- In external DIN Sync mode, the DIN connector is switched to input, so that the
Schaltwerk can be controlled by external pulsed clock signal and start/stop control.
- A further Sync parameter related to external MIDI clock control defines the behavior of
the Schaltwerk regarding incoming MIDI Continue messages.
- Only incoming Start messages will play the tracks from their first step.
- Continue messages will make them play from their current step position.
- Both the Start and Continue messages will make the tracks play from the beginning i.e.
- Normally, MIDI real-time MIDI messages are sent simultaneously at both MIDI outputs.
There are however some configurations where this may cause trouble. This is why the option
is offered to individually enable them.
- The default setting is no MIDI real-time messages at none output.
- All settings in the Sync menu are volatile, and should be reestablished each time the
device is switched on.
7.5 Typical operation
7.5.1 Loading of pattern in the Pattern edit buffer
At startup, pattern 1 is automatically loaded in the pattern edit buffer.
During normal use, this temporary edit buffer can be overwritten by any one of the 128
This is done by pressing one of the dedicated 32 pattern buttons, which,
in conjunction with one of the 4 Pattern-Bank buttons allow a range of 32 × 4 = 128
patterns to be covered.
7.5.2 Song-Mode inactive
No song LED is lit
Song-Mode is inactive at power-up
When a Pattern (Pattern-Bank) button is pressed, the related pattern is loaded in the
If the same operation was to be performed while the sequencer is
running, the new pattern would instantly replace the one in the buffer, resulting at best
in a glitch in the rhythm flow, and at worst, in hanging notes, etc. The human reaction
time and behavior of the pattern buttons are by far too inaccurate to ensure a proper
chaining of patterns.
- This is why a master track system was adopted. Therefrom, the currently playing pattern
has to elapse before the new one plays in turn seamlessly.
- The master track is locked to track 8.
The character "m" in the display is for the master track,
which, when selected is indicated by a capital "M" instead of number
- Until the end of the currently playing pattern is reached, its LED remains steady lit,
while the LED of the newly called pattern is flashing.
- At the transition time, the ending pattern LED goes off, and the starting pattern LED
7.5.3 Song-Mode active
The accompanying Song LED is lit
While in Song-Mode, the temporary Song-Edit-Buffer can be overwritten at any time by one
of the 16 song presets.
For this purpose, a set of 8 dedicated song buttons is used in conjunction with
2 Song-Bank buttons to offer the total of 2 × 8 = 16 songs available.
As soon as a song or Song-Bank button is pressed, the related song is loaded in the
Song-Edit-Buffer, and, provided that the sequencer is running, it will be processed.
The change of pattern in Song-Mode works exactly like in manual mode, and thus is also
synchronous to the master track.
It goes the same in case of song chaining while the sequencer is running:
The currently running song LED is lit while the next song LED is flashing. At the
switching time, they become respectively off and steady on.
The editing of patterns is possible in Song-Mode. The changes will nevertheless be
overwritten each time a new pattern is fetched.
7.5.4 Modes 1~2 and 1~2~3~4
The possibility to chain patterns by 2 or 4 allows to create "mini songs".
This is done by chaining any pattern in the left column with the corresponding one in
the right column, and so, make them play alternatively.
In mode 1~2, the patterns in the first column (1, 3,
), can be coupled with those
of the second column (1, 4,
In mode 1~2~3~4, two of the previous pairs are joined in a single quadruple-pattern
chain. (1, 2, 3, 4 or 5, 6, 7, 8 and so on)
These modes are mutually exclusive. When a dual pattern chain is set within a group of
four patterns, it is not possible to set a quad chain anymore within that group. Only the
second possible dual chain can be set.
Should a quad chain be set in a pattern group where dual chains already exist, these
must be deactivated prior to setting the quad chain.
- The dual and quad pattern links can be played as songs on their own, but also included
in songs where they will count as single patterns, while playing their whole link.
- Practically, these song macros will be used to realize patterns with more than 16 steps:
32 steps with mode 1~2, and 64 steps with mode 1~2~3~4.
- While these 2 and 4 pattern sets are effectively operating as single patterns, all
patterns constituting them should nevertheless be edited and saved separately. By
contrast, they are not accessible individually during play, as they are chained
- The pattern editing capability is disabled during play, as the potential changes are
temporary and overwritten by fetching the next pattern to play.
- To confirm that a pattern is part of a 1~2 or 1~2~3~4 link, the relevant link LED will
lit when such a pattern is called.
- The link modes can be (de)activated at any time by pressing the relevant link mode
- This link information is global and stored in non-volatile memory.
- When linked patterns are used in a song, their link status is respected in executing the
- The link starts by playing the pattern called and thus not automatically the first
pattern within the link, it will however always end with the last pattern in the link.
8.1 Activity display during SysEx reception:
When a pattern SysEx is received faultlessly and written successfully in memory, the
display will show the next message:
- Similarly, when receiving a song:
- In case of error during the reception, the existing Song or Pattern memory will not be
overwritten, and the display will show the following message:
- The cause of such error can be in an erroneous dump format, or an excessive data density
for proper processing by the Schaltwerk. In this case, it is recommended to insert small
pauses between the 32 data chunks constituting the complete message.
- This could also be the case when the machine is already in a heavy processing load
condition, running many events at high tempo, while processing dumps and lot of data from
both MIDI inputs, leading the internal buffer to overflow.
- These error messages are temporary, and overwritten during the next operation.
8.2 Complete initialization
The Schaltwerk can be completely initialized.
This may be needed
- At first use.
- In case of data corruption by a mains failure
- In case of corrupted data that cannot be processed properly.
- The reset procedure is done by holding down the Start button while applying the power to
The following warning is then displayed:
- After pressing the OK button (whose LED is not flashing as usual), the following message
Afterward, the entire memory is erased and initialized.
- This will take a few seconds, afterwards the Patterns and Songs will be loaded with
- To close the procedure, the Schaltwerk will return to its normal power-on status.
- This procedure will irremediably delete all information contained in the Schaltwerk.
This function is normally reserved for servicing purpose, or for users who want to quickly
restore the machine in start-up condition. It is in all cases strongly recommended to save
through SysEx-Dump any data that you may want to use at a later time.
If you experience any of the following difficulties while using the Schaltwerk, look at
this troubleshooting guide to help you remedy the problem.
Apparent failures are often related to the particular behavior of the machine. A deeper
understanding of the functioning circumvents or avoids these troubles.
If you can not come to a satisfying solution, then maybe are you encountering a real
hardware or software problem.
In this case, it is recommended that you take contact with your retailer, distributor or
the factory. We will try to solve your problem in the shortest delay.
9.1 Cabling problems
MIDI data cannot be sent or received.
Check first that your setup is properly connected.
Ensure to use only authentic MIDI cables instead of the hi-fi, or home-made variety,
that could differ from the MIDI specifications.
Try swapping cables to identify if one of them is not faulty. Especially all cables
presenting dents, notches, cuts or perforations, as well as badly soldered contacts.
There is no Sync signal sent nor received.
MIDI cables cannot be used to convey the Sync signal. While they are both of the same
mechanical type, their inner cabling differs. Nevertheless, cables offering the complete
inner cabling do exist, and can be used for both applications.
When connecting to external devices, both devices cannot be set simultaneously to input
or to output. They should be set differently to get a functional coupling.
9.2 Reception problems
If data seems to come in, but leads to strange tuning results.
The receiving device is not set to input mode
The Schaltwerk and the receiving device are set to different MIDI channels.
The receiving device is muted by another message sent out inadvertently (Volume off:
control 7 with value 0), etc.
Data seems to be sent by the Schaltwerk, but leads to strange results.
Different MIDI channels are set for the different functions of the Schaltwerk.
The various functions of the Schaltwerk are not activated properly, set to OFF, or are
listening to the wrong MIDI inputs.
The MIDI data present at the MIDI inputs is not available at the MIDI outputs.
The Schaltwerk has no Merge function. The incoming data is not sent along the onboard
generated data to the outputs. If all you need is to have the data sent to the Schaltwerk
be available to other devices, a THRU box allows you to have multiple flows of the same
data going to separate MIDI connectors. If you want your receiving devices to be
controlled both by the Schaltwerk and another source simultaneously, you need to combine
several MIDI flows into one. This is the work of a Merge box, such as the:
9.3 The Start, Stop, & Continue buttons "do not react"
All tracks are muted, and no data is sent despite the sequencer is running.
All steps are switched off, and no data is sent despite the sequencer is running.
Due to the effects (Arpeggiator, Gater, Record-Step,
) currently activated, the
tracks do not send data because they need incoming MIDI data to play.
Start & End step values are set to the same step position, which if muted will send
no data, even if other steps are ON.
Individual parameters (Step, Gate, Delay, Midi-Event,
) are set to extreme
settings. These values, while being sent correctly, may not be recognized by some devices,
may be ineffective, or out of range to bring useful results.
Electric and lightning perturbation on the mains can alter the contents of the
non-volatile memory of the Schaltwerk, leading to inconsistent data in the Pattern
presets. This can be especially annoying for Pattern 1, as it is the default pattern at
power-on. By running the sequencer, this faulty data is processed and can lead to erratic
behavior. Try to correct the parameters in editing mode before starting the
sequencer. If you can not correct the problem, the last solution is to save the remaining
patterns through SysEx, and then reinitialize the Schaltwerk.
9.4 Changes made to a Pattern/Song are not retained.
You forgot to save your changes into one of the 128 Pattern /16 Song memories after the
editing, or you have missed to confirm explicitly the save operation with the OK button.
As when selecting one of the 128 patterns/16 Songs, they can not be directly edited until
a copy is brought into the Pattern-Edit-Buffer. Changes are only possible onto this copy
and must be saved back into a memory location again.
9.5 Problems to edit parameters in the menus
If you enter an edit menu while several tracks are selected, all parameters accessed
will be set equal in all these tracks with the value currently displayed, even if you just
take a look at the parameters without changing them.
The editing of parameters with the buttons and the rotary encoder is very slow,
laborious and disjointed.
When editing values while the sequencer is running, you should keep in mind that, as the
inner computer job priority for editing is lower than that of the play functions, there
could be some laziness in the reaction time of the menus, especially with complex
sequences or fast tempo being at work.
The indication of the Step-LED/running cursor does not match 100% to the actually
expected position, or particular interference effects can be seen.
Here too, is the software strategy at cause. The display and LEDs have a lower
priority than the processing of higher priority tasks, such as the real time processes:
MIDI in and out, values fetching and issuing, timing control,
that suffer no delay
without audible results.
9.6 Individual buttons react differently
Due to the big quantity of buttons used in this single device, there could be a slight
disparity in production. These small differences can lead to subtle variations in the
behavior of the buttons.
Provided that this effect is slight, it is perfectly normal considering the goal of high
production to keep the cost down.