Roland ep-90/70 - Manual (Page 26)

26
Connecting to MIDI Devices
Cautions when Connecting
an External MIDI Device
Here we will explain the “Local On/Off” and “Omni On/
Off” settings that you need to be aware of when connecting
the ep-90/70 to an external MIDI device.
■ Disconnecting the ep-90/70’s
keyboard and internal sound
generator—Local On/Off
When the ep-90/70 is connected to a MIDI sequencer or the
like, set it to Local Off.
As shown in the diagram, the data that is produced when
you play the keyboard will reach the sound generator by two
routes, (1) and (2), causing each note to be played in
duplicate. To prevent this, select the Local Off setting to cut
route (1).
fig.9-04.e
This sets it to Local On:
fig.9-05.e
This sets it to Local Off:
fig.9-06.e
NOTE
Be aware that if you set your instrument to Local Off when no
external MIDI device is connected, there will be no sound.
■ Switching Local On/Off
Local On is set when the power is switched on.
While holding down the [Piano 1] button,
[Piano 2] button, and [Harpsichord] button,
the “B4” note to turn the setting On, or
press the “C5” note to turn the setting Off.
→ For the notes that correspond to each setting, refer to
“Functions Assigned to the Keyboard” (p. 31).
fig.9-07.e (While holding down three buttons)
MEMO
If the ep-90/70 is connected to a Roland MT series (except
MT-80s), it is not necessary to make the Local Off setting.
When the power is turned on, the MT series will transmit a
Local Off message. If you turn the power on in the order of
first the ep-90/70 and then the MT series, the ep-90/70 will
automatically be set to Local Off.
■ Receiving on all MIDI channels—Omni
On/Off
MIDI features sixteen MIDI channels, numbered 1–16.
The connected devices must be set to use the same MIDI
channels, otherwise no sound will be produced.
When set to Omni On, the ep-90/70 plays regardless of the
MIDI channel on which the MIDI messages are received.
It is useful to turn Omni On when, for example, the MIDI In
connector of the ep-90/70 is receiving music data in which
the right-hand and left-hand parts are recorded on different
MIDI channels.
(1)
MIDI
MIDI MIDI
MIDI
(2)
IN
IN OUT
OUT
Sequencer
Memory
Sound
Source
Each note played
is sounded twice
Thru function On
Local On
Local On
Sound is emitted
Sound Source
Local Off
No sound produced
Sound Source
B4 C5
E.Piano Piano 2 Piano 1
Vibra-
phone
Harpsi-
chord
While holding down three buttons
Press
Local On
Local Off