instruction manual 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: · · · · · Electroluminescent and LCD Control Panels are warranted for three (3) years, except for the display and touch overlay components that are warranted for a period of one (1) year. Disk drive mechanisms, pan/tilt heads, power supplies, MX Series products, and KC Series products are warranted for a period of one (1) year. 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. Some states do not allow a limitation of how long an implied warranty last. Some states do not allow the limitation or exclusion of incidental or consequential damages for consumer products. In such states, the limitation or exclusion of the Limited Warranty may not apply. This Limited Warranty gives the owner specific legal rights. The owner may also have other rights that vary from state to state. The owner is advised to consult applicable state laws for full determination of rights. EXCEPT AS EXPRESSLY SET FORTH IN THIS WARRANTY, AMX CORPORATION MAKES NO OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. AMX CORPORATION EXPRESSLY DISCLAIMS ALL WARRANTIES NOT STATED IN THIS LIMITED WARRANTY. ANY IMPLIED WARRANTIES THAT MAY BE IMPOSED BY LAW ARE LIMITED TO THE TERMS OF THIS LIMITED WARRANTY. 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 i Table of Contents ii AXB-MIDI MIDI Interface Product Information 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.. OUT LED THRU LED IN - MIDI B IN - MIDI A AXlink Status LED AXlink DEVICE ON IN A IN B THRU OUT Front DEVICE DIP Switch IN A IN B THRU OUT PWR GND AXM AXP 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) Enclosure Power consumption DIP Switch Connectors 1.51" x 5.55" x 5.45" (3.84 cm x 14.10 cm x 13.84 cm) Metal with black matte finish 75 mA @ 12VDC 8-position DIP switch sets the AXlink address for the AXB-MIDI. · Four 5-pin DIN MIDI connectors (IN A, IN B, THRU and OUT). · 4-pin captive wire connector for AXlink control signaling and power from the Central Controller. AXB-MIDI MIDI Interface 1 Product Information AXB-MIDI Specifications (Cont.) Input buffer Output buffer (AXlink) Max. Length of SEND_STRING to device Max. Length of data packets from device LED Indicators · 3,072 bytes · 6,143 bytes · 64 · 64 · AXlink Status LED (green): Lights to indicate that the AXB-MIDI is 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). Weight Mounting options Optional Accessories 1 lb. 0.5 oz. (488 grams) Flat surface or Rack mount · PS2.8, 12 VDC, 2.8 A Power Supply · Five-pin DIN MIDI cable · AC-ARK Accessory Rack Kit 2 AXB-MIDI MIDI Interface Installation Installation Setting the DEVICE DIP Switch The 8-position DIP switch (see FIG. 1) sets the AXlink device number for the AXB-MIDI. The device number must match the number assigned in the Axcess software program. The Device DIP switch example shown in FIG. 2 is set to the factory default setting of 90 (2 + 8 + 16 + 64 = 90). 12345678 FIG. 2 DEVICE DIP Switch, shown set to default address setting (90) The AXlink device number range is 1-255, and is set according to the Device DIP switch positions and their values shown in the following table: Device DIP Switch Settings Position Value 1 1 2 2 3 4 4 8 5 16 6 32 7 64 8 128 Preparing Captive Wires for AXlink Use a wire stripper and flat-blade screwdriver to prepare and connect the AXlink captive wires: 1. Strip 0.25 inch off the wire insulation for all four wires. 2. Insert the exposed section of each wire into the appropriate opening on the captive wire connector according to the wiring diagrams shown in the Installation section of this manual. 3. Using a flat-blade screwdriver, turn the screws clockwise to secure the wire in the connector. Wiring the AXB-MIDI The AXB-MIDI requires 12.5 VDC to operate properly. The power can be supplied by the Central Controller's power supply and AXlink cable or with an optional 12 VDC power supply. The maximum wiring distance between the Central Controller and AXB-MIDI is determined by power consumption, supplied voltage, and the wire gauge used for the cable. AXlink data and power connections Connect the Central Controller's AXlink connector to the AXlink connector on the rear panel of the AXB-MIDI (see FIG. 1) for data and 12 VDC power, as shown in FIG. 3. AXB-MIDI MIDI Interface 3 Installation PWR + AXP/TX AXM/RX GND AXB-MIDI FIG. 3 AXlink wiring PWR + AXP/TX AXM/RX GND Central Controller If using power from AXlink, disconnect the wiring from the Central Controller before wiring the AXB-MIDI. AXlink Wiring Guidelines The following table lists wire sizes and maximum lengths allowable between the AXB-MIDI and the Central Controller power supply. The maximum wiring lengths are based on 13.5 VDC @ 100 mA available at the Central Controller's power supply output cable end. AXlink Wiring Guidelines Wire Size Max Wiring Length 18 AWG 20 AWG 22 AWG 24 AWG 1,173.71 ft (357.74 m) 742.57 ft (226.34 m) 462.96 ft (141.11 m) 291.83 ft (88.95 m) If the AXB-MIDI is installed farther away from the Central Controller than recommended, connect an optional 12 VDC power supply to the AXlink connector on the AXB-MIDI rear panel (see the Wiring AXlink with Optional 12 VDC power supply section on page 4). Wiring AXlink with Optional 12 VDC power supply Connect the Central Controller's AXlink connector to the AXlink connector on the rear panel of the AXB-MIDI, as shown in FIG. 4. PWR (+) GND (-) PWR + AXP/TX AXM/RX GND AXB-MIDI FIG. 4 Wiring AXlink with Optional 12 VDC power supply PWR + AXP/TX AXM/RX GND Central Controller Local +12 VDC power supply (coming from the PSN power supply) Use an external 12 VDC power supply when the distance between the Central Controller and AXB-MIDI exceeds the limits described in Figure 9 or the power supply current capacity cannot 4 AXB-MIDI MIDI Interface Installation accommodate the 75 mA draw of the AXB-MIDI. Make sure to connect the GND and +12 VDC wire on the AXB-MIDI AXlink connector end. Do not connect the optional +12 VDC power supply wire to the Central Controller's power supply side of the AXlink connector. MIDI cable connectors The four MIDI jacks on the rear panel (IN A, IN B, THRU and OUT) are identical 5-pin DIN type connectors. FIG. 5 shows the pinout for wiring cables to these DIN connectors. It is recommended that off the shelf MIDI cables be used. MIDI cable lengths will be determined by physical placement of the Central Controller, AXB-MIDI, and the equipment providing the MIDI input protocol. 1 - (not used) 5 - Signal ( -) 2 - shielded ground FIG. 5 MIDI DIN connector pinout 3 - (not used) 4 - Signal (+) ! Pin 2 (shielded ground) is only connected on the THRU and OUT connectors. It is not connected on IN A and IN B. It is recommended that to maintain signal integrity when connecting to any MIDI device, cable lengths be no more than 20 feet (6.01 meters). ! Replacing the Lithium Battery A lithium battery (Figure 15), with a life of approximately 5 years, in the AXB-MIDI protects stored presets if a power loss occurs. The battery is not used when DC power is supplied to the AXB-MIDI. Write down the replacement date on a sticker or label by adding 5 years to the date of installation. Then attach it to the bottom of the AXB-MIDI. FIG. 6 Lithium battery and socket All control commands in AXB-MIDI memory are lost when the lithium battery is replaced. Contact your AMX dealer before you replace the lithium battery and verify that they have a current copy of the Axcess program for your AXB-MIDI. This will avoid any inadvertent loss of data or a service outage. AXB-MIDI MIDI Interface 5 Installation Static electricity can damage electronic circuitry. Before removing the lithium battery from the enclosure, discharge any accumulated static electricity from your body by touching a grounded metal object. You will need a flat-blade tool (non-conducting) that can be slipped under the lithium battery to pry it up and out of the socket. The location of the Lithium battery on the circuit board is shown in FIG. 7. rear Battery/socket front FIG. 7 AXB-MIDI circuit card, showing location of battery 1. Discharge the static electricity from your body. 2. ...