AMX AXB-MIDI User Manual

AXB-MIDI

MIDI Interface

instruction manual

AXlink Bus Controllers

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Table of Contents

Table of Contents

Product Information .................................................................................................1

Installation .................................................................................................................3

Setting the DEVICE DIP Switch ........................................................................................ 3

Preparing Captive Wires for AXlink.......................................................................................... 3

Wiring the AXB-MIDI ......................................................................................................... 3

AXlink data and power connections ......................................................................................... 3

AXlink Wiring Guidelines.......................................................................................................... 4

Wiring AXlink with Optional 12 VDC power supply .................................................................. 4

MIDI cable connectors ............................................................................................................. 5

Replacing the Lithium Battery ........................................................................................... 5

Programming ............................................................................................................7

Send Commands............................................................................................................... 7

IN A and IN B MIDI Signal Routing ................................................................................... 8

MIDI Programming ............................................................................................................ 9

Programming examples ........................................................................................................... 9

Summary of MIDI Messages ........................................................................................... 11

AXB-MIDI MIDI Interface

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Table of Contents

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AXB-MIDI MIDI Interface

Product Information

The AXB-MIDI MIDI Interface is an Axcess device for pass-through and control of Musical
Instrument Digital Interface (MIDI) protocol signals. This unit can act as a MIDI matrix switcher.

AXB-MIDI decodes and encodes MIDI protocol signals and routes the signals according to the
programming within an Axcess Central Controller. The AXB-MIDI communicates with the Central
Controller AXlink data protocols..

Product Information

OUT LED

THRU LED

IN - MIDI B
IN - MIDI A

AXlink Status LED

AXlink

DEVICE

ON

AINB

IN

OUTTHRU

Front

DEVICE DIP Switch

IN A

IN B OUT

THRU

GND

AXP

AXM

PWR

Rear

AXlink

MIDI A INPUT
MIDI B INPUT

MIDI THRU

MIDI OUT

AXlink connector

FIG. 1 AXB-MIDI - front and rear panel components

The AXB-MIDI provides MIDI signal pass-through and device control. Processing of MIDI
signaling is instantly visible via four front panel LEDs. A lithium battery provides data backup in
the event of power failure. The unit can be mounted in an electronic rack using an optional AC-RK
Accessory Rack Kit.

AXB-MIDI Specifications

Dimensions (HWD) 1.51" x 5.55" x 5.45" (3.84 cm x 14.10 cm x 13.84 cm)

Enclosure Metal with black matte finish

Power consumption 75 mA @ 12VDC

DIP Switch 8-position DIP switch sets the AXlink address for the AXB-MIDI.

Connectors • Four 5-pin DIN MIDI connectors (IN A, IN B, THRU and OUT).

AXB-MIDI MIDI Interface

• 4-pin captive wire connector for AXlink control signaling and power from the
Central Controller.

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Product Information

AXB-MIDI Specifications (Cont.)

Input buffer • 3,072 bytes

Output buffer (AXlink) • 6,143 bytes

Max. Length of
SEND_STRING to device

Max. Length of data packets
from device

LED Indicators • AXlink Status LED (green): Lights to indicate that the AXB-MIDI is

Weight 1 lb. 0.5 oz. (488 grams)

Mounting options Flat surface or Rack mount

Optional Accessories • PS2.8, 12 VDC, 2.8 A Power Supply

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operational and interfacing with the Central Controller (when blinking once
per second).

• IN A LED (red): Lights to indicate that there is MIDI data present on the IN A
connector.

• IN B LED (red): Lights to indicate that there is MIDI data present on the IN B
connector.

• THRU LED (red): Lights to indicate MIDI IN A/B signal passing through
without any changes.

• OUT LED (red): Lights to indicate MIDI data is being transmitted out the OUT
connector (after the AXB-MIDI receives AXlink control commands or MIDI
signals from the Central Controller).

• Five-pin DIN MIDI cable

• AC-ARK Accessory Rack Kit

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AXB-MIDI MIDI Interface