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Configuration
The GT-3/5 has three sets of configuration data; <MIDI>,
and <SYSTEM> - both of these may be found under the
Utility function settings accessed using the GT-3/5 Utility
Button (naturally) which are global and the control assigns
which are stored on a per patch basis.
<MIDI> Utility Function Settings
To edit the <MIDI> settings we use the 'Utility' button to
select '4. MIDI' sub-menu. Then by using the parameter '<'
and '>' buttons, we can select a specific MIDI parameter to
edit. Finally by using the VALUE dial or 'jog wheel' (as
such controls are more normally known), we can select the
value or setting desired for the selected parameter.
Below are the specific MIDI parameters that we can edit on
the GT-3/5, and what they mean to guitar players (not
computer technicians!):
MIDI RX Channel
Here you set the MIDI channel that the GT-3/5 will receive
on. This parameter should normally be set to the same MIDI
channel that the "Transmitting Unit" (MV-4, computer,
sequencer) is sending MIDI Messages to the GT-3/5. You
would use this if you want to control the GT-3/5 from some
other MIDI unit.
MIDI OMNI Mode
If this parameter is set to "ON", the GT-3/5 will "Listen" to
ALL 16 channels at the same time, regardless of the MIDI
RX Channel that has been set above. OMNI mode only
affects on which channel receiving messages occurs and
does not affect the transmission channel in any way. It is
often best to set this to "OFF", unless you understand why
you are turning it on when using an advanced MIDI based
rig.
MIDI TX Channel:
Here you set the MIDI channel that the GT-3/5 will transmit
on. If it is set to "RX", it will transmit on the same MIDI
Channel as the 'MIDI RX Channel'. The GT-3/5 will only
transmit on one channel (the TX channel) even if 'OMNI
mode' is set to 'ON'.
MIDI Device ID
The Device ID is used inside SYSEX messages. The Device
ID identifies a specific GT-3/5 if there is more than one in
the MIDI chain. In other words, if you had two GT-3 or
GT-5 processors in your rig, you would need to be able to
differentiate between them- hence the Device ID number.
Normally the Device ID is set to 1 for the GT-3/5, but can
be changed to any of 32 different Device ID's. 99.9% of the
time there is no need to change the 'Device ID' on ANY
unit since there is usually only one in the MIDI chain. If you
© Copyright 2000-2002 Barry S. Pearce et al.
Section 28
have more that one GT-3/5 (you show off!), then both GT-
3/5's will load the 'DUMP' if they are set to the same midi
channel at the same time; unless the DEVICE ID's are set to
different numbers. Providing the Device Ids are different
SYSEX messages will find the correct unit even if MIDI
OMNI Mode is set to ON.
MIDI PC OUT
This one is easy. When you have MIDI leads hooked up to
other units, you tell the GT-3/5 whether or not to send
"Program Change Messages". Set to "ON" it will send
them, and set to "OFF" it will not.
MIDI EXP Number
MIDI EXP OUT
You can use the built in expression (EXP) pedal of the GT-
3/5 to send out MIDI Control ('CC') messages to other
MIDI units. With this parameter you set which 'CC'
messages the GT-3/5 will send when the pedal is moved.
This allows you to use the EXP pedal to change parameters
in real time. For a synthesizer or other FX unit, the GT-
3/5's EXP pedal will act as if you were turning that the
actual unit's knob or moving one of its sliders; for example,
to control output volume or chorus depth or speed. You can
turn this function "OFF", or pick a 'CC' number from 1-31
or 33-95.
MIDI CTL Number
MIDI CTL OUT
Similar to the expression pedal above, this setting allows
you to configure the built-in control (CTL) pedal to output
MIDI CC messages. However, whilst the expression pedal
will transmit the entire range of "CC" values ("0-127") as
you move the pedal in a linear fashion, the CTL Pedal will
only have an on/off value like a switch. A value of 127 is
transmitted when the pedal is depressed and a value of 0
transmitted when the pedal is released. It must be noted that
this occurs regardless of any control assigns. As the built-in
CTL pedal is momentary the MIDI messages will also
reflect a momentary switch.
MIDI EXP/CTL1 Number
MIDI EXP/CTL2 Number
These are for the external expression pedals/footswitches.
Their behaviour is exactly the same as that described under
'MIDI EXP Number' for external expression pedals, and
'MIDI CTL Number ' for external footswitches. The GT-5
allows you to connect either an expression pedal or
footswitch to either jack. Therefore you have the flexibility
to connect 2 EXP pedals, 2 CTL Footswitches or one of
each.
All About MIDI
125
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