Configuration and Installation
4
AXB-DMX512 DMX512 Interface
1.
Remove the jumper that is on pins 1 and 2 of jumper trios JP4 and JP5. (Pins 1 and 2 are marked
HIZ - see FIG. 3).
2.
Place the jumper on pins 2 and 3 of jumper trios JP4 and JP5. (Pins 2 and 3 are marked TERM -see
FIG. 3). This terminates the incoming DMX input with a 120 ohm resistor.
Wiring Devices to the AXB-DMX512
The AXB-DMX512 has three captive-wire connectors on the rear panel (FIG. 4) for DMX512 transmit
and receive, and AXlink.
Preparing/connecting captive wires
1.
Strip 0.25 inch of wire insulation off all wires.
2.
Insert each wire into the appropriate opening on the connector according to the wiring diagrams and
connector types described in this section. Do not tighten the screws excessively; doing so may strip
the threads and damage the connector.
Wiring guidelines
The interface requires a 12 VDC power to operate properly. The interface uses a PSN2.8 power supply.
The Central Controller supplies power via the AXlink cable or external 12 VDC power supply. The
maximum wiring distance between the Central Controller and interface is determined by power
consumption, supplied voltage, and the wire gauge used for the cable. The table below lists wire sizes
and maximum lengths allowable between the AXB-DMX512 and Central Controller. The maximum
wiring lengths for using AXlink power are based on a minimum of 13.5 volts available at the Central
Controller’s power supply.
FIG. 3
Termination jumper pin settings for JP4 and JP5
FIG. 4
AXB-DMX512 (rear view)
Wiring Guidelines at 160 mA
Wire Size Maximum Wiring Length
18 AWG
733.57 feet (223.59 m)
20 AWG
464.11 feet (141.46 m)
22 AWG
289.35 feet (88.19 m)
24 AWG
182.39 feet (55.59 m)
TERM
HIZ
IN
OUT
AXlink
DAT
A
GN
D
GN
D
DAT
A
DAT
A
DAT
A
NC
DAT
A
DAT
A
DAT
A
DAT
A
NC
GN
D
AX
P
AX
M
PW
R
1
2
1
2
1
1
2
2
