Roland RG-3 用户手册

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页码 124
100
Chapter 7. Connecting External Devices
Making MIDI-related Settings
Here’s how you can set the transmit channel and other MIDI 
related settings.
■ MIDI Transmit Channel Settings
MIDI features sixteen MIDI channels, numbered 1–16.
Simply connecting a cable is not enough for communication 
to take place. The connected devices must be set to use the 
same MIDI channels. Otherwise, no sound will be produced, 
and no sounds can be selected.
The RG-3 receives all channels 1–16.
1.
Press the [Function] (Exit) button, getting its 
indicator to light.
2.
Press the [Song] (Select -) button or [
] (Select 
+) button to display the MIDI screen.
fig.07-110d
3.
Press the [Song] (Select -) button or [
] (Select 
+) button to get the value for “Tx Ch” (Transmit 
channel) to flash.
fig.07-120d
4.
Press the [
] (Value -) button or [
] (Value 
+) button to set the MIDI Transmit channel.
Value:
1–16
5.
Press the [Function] (Exit) button so the indicator 
goes out.
■ Disconnecting the Internal Sound 
Generator and Keyboard (Local Control)
When connecting a MIDI sequencer, set Local Control to 
“OFF.” The setting is at “Local Control ON” when the RG-3 
is powered up.
As illustrated, information describing what has been played 
on the keyboard is passed to the sound module over two 
different routes, (1) and (2). 
As a result, you hear overlapping or intermittent sounds. 
To prevent this from happening, route (1) must be disabled, 
by setting the unit to what is known as “Local Off.”
fig.07-130
Local On:
The keyboard and internal sound generator are 
connected.
fig.07-140
Local Off:
The keyboard and internal sound generator are 
separated. No sound will be produced by the keyboard 
when it is played.
fig.07-150
→ When connecting a unit in the Roland MT series, you don’t 
need to switch off Local Control. MT units transmit Local Off 
messages when their power is switched on. If you first switch 
on the RG-3, then the MT-series device, Local Control is 
automatically switched off on the RG-3.
(1)
MIDI
MIDI
MIDI
MIDI
(2)
IN
IN
OUT
OUT
Sequencer
Memory
Sound
Generator
Each note played is sounded twice
Soft Thru On
Local On
Local On
Sound is emitted
Sound Generator
Local Off
No sound produced
Sound Generator