RME M-32 AD [18/57] Remote control

User’s Guide M-32 AD © RME

9. Remote Control

9.1 MIDI

The M-32 AD can be completely remote controlled via MIDI. It reacts on special SysEx com-

mands. Furthermore, upon request it will report the complete device status, including all con-

trols and LEDs on the front plate. Each M-32 AD can be programmed with its own ID, providing

a separated remote control of multiple devices via a single MIDI channel. A description of the

MIDI implementation is found in chapter 19.

The key REMOTE is used to select the source of the MIDI remote control commands: MIDI

port, MADI port and Off. The latter is a safety function to prevent any setup-change by any MIDI

signal.

The diagram shows the signal flow

of the MIDI data with all I/Os. The

MIDI input signal reaches both the

internal Remote Command

Processor and the MIDI outputs.

This MIDI Through function

provides the base for a simplified

serial MIDI cabling when using

multiple M-32 ADs. The same is

true for remote control via MADI,

where MIDI is passed through from

device to device automatically via

the serial MADI cabling.

9.2 MIDI over MADI

MADI allows for a transmission of 64 audio channels over long distances with a single line –

perfect. So what about MIDI? Be it remote control commands or sequencer data, in practice

only a single MADI line will not suffice. Therefore RME developed a MIDI over MADI technol-

ogy. The data at the MIDI input are being included into the MADI signal invisibly, and can be

collected at the MIDI output of another M-series converter, ADI-8 QS, ADI-6432, ADI-642, ADI-

648, Micstasy or a HDSP MADI, at the other end of the MADI line.

Technically every single MADI channel includes several additional bits containing various infor-

mation (Channel Status). RME uses the usually unused User bit of channel 56 (channel 28 in

96k frame mode) to transmit MIDI data invisibly within MADI, ensuring full compatibility.

Unlike other MADI-based devices from RME, the M-32 AD is no bi-directional MIDI to MADI

converter for external signals, because only one direction is available for the transmission.