D Midi Out; Brc Connection; A Midi In; B Midi Out - Alesis AI-2 Reference Manual

2.3D MIDI OUT

The MIDI OUT connector is a 5-pin din socket. The MIDI output is
used for MIDI Machine Control responses (MMC), AI-2 responses
and BRC responses to external commands, and for MIDI Time
Code (MTC). Connect a MIDI cable to this socket when using an
external MIDI controller that requires MIDI responses.

2.4 BRC CONNECTION

The AI-2 BRC connections are used to connect a BRC to the AI-2.
Connectors are provided for MIDI, time code and word clock.
These signals are used to control the BRC which in turn controls
the connected ADATs.

2.4A MIDI IN

The MIDI IN connector is a 5-pin din socket. Connect a MIDI cable
to this input from the BRC MIDI output. BRC MIDI responses to
AI-2 or external requests are returned via this cable.

2.4B MIDI OUT

The MIDI OUT connector is a 5-pin din socket. Connect a MIDI
cable from this output to the BRC MIDI input. AI-2 or External MIDI
commands are sent to the BRC and ADATs via this cable.

2.4C MIDI THRU

The MIDI THRU connector is a 5-pin din socket. Connect a MIDI
cable to this socket if MIDI output responses from the BRC are
required.

2.4D GEN OUT

The GEN OUT connector is a 1/4" TRS jack. The generator output
is an unbalanced, longitudinal time code feed with a fixed level of
1.0 Vpp. Connect a 1/4" to 1/4" audio jack cable from this output to
the BRC SMPTE IN connector. The BRC uses the AI-2 time code
output as it's time code chase input. When ADATs are controlled
directly by the AI-2 the generator outputs the LTC value for the
current ADAT position.
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