AMX AXB-MIDI MIDI INTERFACE User Manual
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AXB-MIDI

MIDI Interface

AXlink Bus Controllers

AMX Limited Warranty and Disclaimer

AMX Corporation warrants its products to be free of defects in material and workmanship under normal use for three (3) years from the date of purchase from AMX Corporation, with the following exceptions:

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Unless otherwise specified, OEM and custom products are warranted for a period of one (1) year.

Software is warranted for a period of ninety (90) days.

Batteries and incandescent lamps are not covered under the warranty.

This warranty extends only to products purchased directly from AMX Corporation or an Authorized AMX Dealer.

AMX Corporation is not liable for any damages caused by its products or for the failure of its products to perform. This includes any lost profits, lost savings, incidental damages, or consequential damages. AMX Corporation is not liable for any claim made by a third party or by an AMX Dealer for a third party.

This limitation of liability applies whether damages are sought, or a claim is made, under this warranty or as a tort claim (including negligence and strict product liability), a contract claim, or any other claim. This limitation of liability cannot be waived or amended by any person. This limitation of liability will be effective even if AMX Corporation or an authorized representative of AMX Corporation has been advised of the possibility of any such damages. This limitation of liability, however, will not apply to claims for personal injury.

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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-MIDIMIDI Interface

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Table of Contents

 

ii

AXB-MIDIMIDI Interface

 

 

 

Product Information

Product Information

The AXB-MIDIMIDI Interface is an Axcess device forpass-throughand control of Musical Instrument Digital Interface (MIDI) protocol signals. This unit can act as a MIDI matrix switcher.

AXB-MIDIdecodes and encodes MIDI protocol signals and routes the signals according to the programming within an Axcess Central Controller. TheAXB-MIDIcommunicates with the Central Controller AXlink data protocols..

OUT LED

THRU LED

IN - MIDI B

IN - MIDI A

AXlink Status LED

DEVICE

IN

IN

AXlink

A

B THRU OUT

 

 

 

ON

 

DEVICE DIP Switch

 

 

 

IN A

IN B

THRU

OUT

 

GND

AXM

 

AXP

PWR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AXlink

MIDI A INPUT

MIDI B INPUT

MIDI THRU

MIDI OUT

AXlink connector

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

Front

Rear

The AXB-MIDIprovides MIDI signalpass-throughand 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 optionalAC-RKAccessory Rack Kit.

AXB-MIDISpecifications

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-positionDIP switch sets the AXlink address for theAXB-MIDI.

 

 

Connectors

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

 

4-pincaptive wire connector for AXlink control signaling and power from the

 

Central Controller.

 

 

AXB-MIDIMIDI Interface

1

 

 

 

 

Product Information

AXB-MIDISpecifications (Cont.)

Input buffer

• 3,072 bytes

 

 

Output buffer (AXlink)

• 6,143 bytes

 

 

Max. Length of

• 64

SEND_STRING to device

 

 

 

Max. Length of data packets

• 64

from device

 

 

 

LED Indicators

• AXlink Status LED (green): Lights to indicate that the AXB-MIDIis

 

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-MIDIreceives AXlink control commands or MIDI

 

signals from the Central Controller).

 

 

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

 

Five-pinDIN MIDI cable

 

AC-ARKAccessory Rack Kit

 

 

 

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AXB-MIDIMIDI Interface