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The real advantage of a MIDI operation can be
seen when two or more units are connected:
Here a daisychain-structure is built up, where
the MIDI Out of the first monitor is connected to
the MIDI In of the next system, and here from
MIDI Through to the MIDI In of the third system
etc., see Fig. 4.2/4.
This way all monitors in the chain will be
controlled by the master.
In menu
2 Midi Settings
the option „
Out/Thr
“ has
to be selected, and the IR remote control of the
slave systems has to be disconnected by
pressing the IR ON / OFF key on the remote
control pointing to every slave, so only the master
will remain active for the RC 55 .
Note:
If any problems with the data transfer
should occur when MIDI is active ( such as MIDI
overflow ) please check the bandrate in the MIDI
Settings menu and select the option „RS-232“.
The RS-232 interface in general has been
provided to allow for a data-transfer between the
O 500 C and a personal computer. The presets
for this interface are made in menu 2 Midi Set-
tings, as described above, in the position „Baud-
rate“ the option „RS-232“ is selected.
Fig. 4.2/3: Wiring scheme of the cable for a Ma-
ster-Slave-operation of two O 500C
Fig. 4.2/5 shows the wiring scheme of the
connecting cable between the O 500 C and a
personal computer for transferring parameter
settings, as described in chapter 6.2. This is a
so called modem cable, which is available in nor-
mal computershops, e.g. RS Components Nr.
777-558.
Fig. 4.2/5: Wiring scheme of the connecting cable
between O 500 C and a PC
Fig. 4.2/4: MIDI-chain (Out: Option Out/Through)
1
13
14
25
1
13
14
25
(MIDI
Out)
MIDI
In
(MIDI
In)
MIDI
Out
1
13
14
25
(7)
(2)
(3)
1
5
6
9
(2)
(3)
25 PIN SUB-D MALE
9 PIN SUB-D FEMALE
O 500 C #1
O 500 C #n
O 500 C #3
O 500 C #2
...
MIDI
In
MIDI
In
MIDI
In
MIDI
In
MIDI
Out
MIDI
Through
MIDI
Through
