Remote Control; Midi; Midi Over Madi - RME Audio OctaMic XTC User Manual

11. Remote Control

11.1 MIDI

The OctaMic XTC can be completely remote controlled via MIDI. It reacts on special SysEx
commands. Furthermore, upon request it will report the complete device status. Each OctaMic
XTC can be programmed with its own ID (menu Options - General Settings), providing a sepa-
rated remote control of multiple devices via a single MIDI channel. A description of the MIDI
implementation is found in chapter 19.
The menu Options – MIDI Sources is used to define from which port the XTC receives MIDI
remote control commands: USB1, USB2, MADI In or DIN In. The option OFF is a safety setting
to prevent unexpected changes by MIDI signals.
In the same menu the output for the unit's response to external remote commands is chosen.
All MIDI ports of the XTC, USB 1/2, DIN and MADI, are available as Control output, even at the
same time.
In the menu General Settings it is even possible to activate a through-mode of the complete
MIDI signal from the Control input to the Control output port. This option is especially useful with
serial MADI cabling, as remote commands would otherwise get stuck already at the first unit
within the MADI chain.

11.2 MIDI over MADI

MADI allows for a transmission of 64 audio channels over long distances with a single line –
perfect. But what about MIDI? Be it remote control commands or sequencer data, in practice
only a single MADI line will not suffice. Therefore RME developed the MIDI over MADI techno-
logy. The data at the MIDI input are being included into the MADI signal invisibly, and can be
collected at the MIDI output of another OctaMic XTC or other RME MADI device at the other
end of the MADI line.
Technically every single MADI channel includes several additional bits, containing various in-
formation (Channel Status). RME use the usually unused User bit of channel 56 (channel 28 in
96k frame mode), to transmit MIDI data invisibly within MADI, ensuring full compatibility.
To remote control more than one OctaMic XTC every unit can have its own ID (menu Options -
General Settings), providing a separated remote control of multiple devices via a single MIDI
channel.
User's Guide OctaMic XTC © RME
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