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MIDI BASICS
MIDI CHANNELS
: The 2112 can be set so that they
communicate on 1 of 16 discrete MIDI channels. Some
devices may also be set up to transmit or receive
information on all channels in an Omni mode or to
none of the channels in a Disabled mode.
P
ROGRAM CHANGES: When the 2112 is set to com-
municate on one or all of the MIDI channels, it will rec-
ognize a Program Change command. If the number is
legal (e.g. within the device’s range of selectable pro-
grams) the DigiTech device will respond by changing to
the new program. MIDI sends Program Changes 0
through 127. DigiTech devices begin their program
numbering with 1, thus Program Change 0 will select
program 1.The 2112 also allows the user to ‘re-map’
the Program Change commands so that Program
Change 0 could call program 135, if so desired.
CONTINUOUS CONTROLLERS: A MIDI Continuous
Controller may be ‘Linked’ to nearly any available para-
meter in the 2112. CC links (Modifiers) and their
ranges are treated uniquely in each program with the
assignments being saved only if they are stored as part
of the program.
C
HANNEL
PRESSURE
: DigiTech products treat Channel
Pressure as simply another type of Continuous
Controller which can be linked to parameters for con-
trol.
PITCH
BEND: Pitch Bend information is a higher reso-
lution controller that is not supported in DigiTech
products, due to the density of the information and the
resources needed to process it properly. Many MIDI
control products offer the ability to map Pitch Bend to
normal Continuous Controllers if a user wanted to
control a parameter with a device such as a Pitch Bend
Wheel.
SYSTEM EXCLUSIVE IMPLEMENTATION
MIDI System Exclusive communication allows a user to control a device directly through MIDI in a very powerful and
flexible manner. Much care has gone into creating and testing this documentation but DigiTech can not guarantee
100% accuracy, nor can DigiTech be held responsible for presets and data lost in a product from System Exclusive
Information use.
A working knowledge of the MIDI Version 1.0 Detailed Specification can be useful while implementing any manufactur-
er's SysEx commands. For a copy of the MIDI spec contact:
MIDI Manufacturers Association
5316 West 57th Street
Los Angeles, California 90056 USA
(213) 649-6434
It is a good practice to back up any user programs and/or user algorithms in the device before you begin to work with
SysEx commands due to the fact that incorrect commands can produce unexpected results. Should you encounter
any discrepancies between this documentation, and a DigiTech S-DISC II™ MIDI, product please feel free to contact us
at:
Digitech Electronics
Attn: Product Management Dept.
8760 South Sandy Parkway
Sandy, Utah 84070 USA
(801) 566-8800
http:///www.digitech.com
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