Edirol UM-1EX Owner's Manual page 10

THRU Switch
4
Selects the destination to which the MIDI messages that flow in through the UM-1EX's MIDI IN
cable are to output.
■THRU switch ON/OFF setting
You can use the THRU switch to switch the destination device for MIDI messages from the MIDI
keyboard or digital piano connected to the MIDI IN cable. There is no need to change any cable
connections.
Switch Setting MIDI Message Destination Device
OFF
ON
fig.connect-change_e
* Don't change the setting of the THRU switch while playback is in progress. Doing so will cause MIDI
errors.
MIDI OUT Indicator
5
This lights when MIDI messages from the computer are transmitted.
MIDI OUT Cable (CONNECT TO MIDI IN)
6
Connect this to the MIDI IN connector of the device (such as a sound
module) that is to be employed by your computer for playing music.
MIDI IN Indicator
7
This lights when MIDI messages are received from the device connected
to MIDI IN.
MIDI IN Cable (CONNECT TO MIDI OUT)
8
Connect this to the MIDI OUT connector of the device (such as a MIDI
keyboard) that will be transmitting MIDI messages to your computer.
10
MIDI messages flowing in through the UM-1EX's MIDI IN cable are routed to the
computer (sequencer software).
MIDI messages flowing in through the UM-1EX's MIDI IN cable are output from
the UM-1EX's MIDI OUT cable. If you are not using sequencer software with your
performances, set this to ON.
MIDI Message Flow (THRU OFF)
MIDI Message Flow (THRU ON)
MIDI Message Flow
MIDI Message Flow