Reference Guide
AXB-FBM AXlink Fiber Transceiver Multimode
Overview
The AXB-FBM AXlink Fiber Transceiver (Figure 1) enables AXlink devices
to be placed at greater distances from the Master Controller converting
AXCESS data signals to optical light waves. The AXB-FBM uses two-way
communication over multimode optical fiber. The use of AXB-FBM
installations is transparent to the Master Controller eliminating the need for
AXCESS commands and device numbers.
AXB-FBMs must be used in pairs, one at each end of a fiber optic cable
run. One acts as a Master and the other as a slave. Application of the AXB-
FBM is a plug-and-play installation. Connect the AXlink and power wiring as
show in Figure 3, then connect the two AXB-FBMs.
Each AXB-FBM pair uses up to 3,280 feet (1 KM) of optical fiber cable, a
total of up to 1,000 feet (304 M) of 18 AWG copper AXlink wiring, and up to
64 AXlink devices located at the far-end.
Specifications
AXlink Status LED Blink Patterns
Figure 2 shows the LEDs and connectors on the AXB-FBM.
Using an Auxiliary 12 VDC Power Supply
The AXB-FBM requires 12.5 VDC to operate properly. The power is
supplied by the Master Controller's power supply, via an AXlink cable, or
with an optional auxiliary 12 VDC power supply. The maximum wiring
distance between the Master Controller and AXB-FBM is determined by
power consumption, supplied voltage, and the wire gauge used for the
cable.
NOTE: The far-end AXB-FBM and AXlink devices always require use of the
supplied auxiliary 12 VDC power supply.
Preparing captive wires
• Strip 0.25 inch of wire insulation off all wires.
• Insert each wire into the appropriate opening on the connector accord-
ing to the wiring diagrams and connector types described in this sec-
tion.
• Do not tighten the screws excessively; doing so may strip the threads
and damage the connector.
FIG. 1
AXB-FBM AXlink Fiber Transceiver Multimode
AXB-FBM Specifications
Power 12 VDC @ 100 mA
Optical transmission • Multi-mode fiber-optic
• 850 nm wavelength, two-way operation
• 8 dB optical loss range
Connectors • 4-pin captive-wire AXlink connector
• 2-pin captive-wire auxiliary power connector
• Fiber-optic connector (ST type)
LEDs • Power indicator (Red)
• AXlink LED status indicator (Green)
Enclosure Metal with black matte finish
Dimensions (HWD) 1.12" x 2.96" x 5.74"
(2.84 cm x 30.48 cm x 3.23 cm)
Weight 6.00 oz (170 g)
Included • Surface mount brackets
Options • 12 VDC external auxiliary power supply (110 VAC input)
• FB-RM AXB-FBM Rack Mount Adapter
• AC-RK Accessory Rack Kit (holds up to 3 FB-RM mounts)
AXlink Status LED Blink Patterns
Master Mode: • Off - No power or the controller is not functioning properly.
• 1 blink per second - power is active and AXlink communication is
functioning.
• 2 blinks per second - devices specified in the master program do
not match the specified devices found.
• 3 blinks per second - indicates an AXlink communication error.
• Full-on - indicates the following conditions:
- There is no AXlink control or activity, but power is on.
- The AXCESS program is not loaded.
Slave Mode: • Off - No power or the controller is not functioning properly.
• 1 blink per second - Connected to Master.
• Full on - Slave is not connected to the Master.
FIG. 2 AXB-FBM AXlink Fiber Transceiver connectors and LEDs
AXlink
Power
Auxiliary
AXlink
Fiber-optic connector
LED
status
LED
power
connector
connector
AMX Corporation reserves the right to alter specifications without notice at any time.
For full warranty information, refer to the AMX Instruction Manual(s) associated with your Product(s).
032-004-2660 12/02 ©2002
AMX Corporation. All rights reserved. The AMX logo is a trademark of AMX Corporation. AMX reserves the right to alter specifications without notice at any time.
3000 RESEARCH DRIVE, RICHARDSON, TX 75082 • 800.222.0913 • fax 469.624.7153 • technical support 800.932.6993 • www.amx.com
93-XXXX
REV: A
Wiring guidelines
The following table lists copper wire sizes and maximum lengths allowable
between the AXB-FBM and the Master Controller's power supply. When
these distances are exceeded, a separate, optional 12 VDC power supply
is used to power the AXB-FBM. The maximum wiring lengths are based
on 12 VDC available at the Master Controller's power supply output.
Wiring AXlink and Auxiliary 12 VDC Power
Figure 3 diagrams wiring the AXlink and a 12 VDC auxiliary power supply
to the AXB-FBM.
Use the 12 VDC power supply when the distance between the Master
Controller and AXB-FBM exceeds the limits described in Figure 3. Make
sure to connect only the GND wire on the AXlink connector when using a
12 VDC power supply. Do not connect the PWR wire to the AXlink
connector's PWR opening.
Wiring Guidelines
Wire Size Max Wiring Length
18 AWG
918.62 ft. 280.0 m
20 AWG
581.19 ft. 177.1 m
22 AWG
362.35 ft. 95.2 m
24 AWG
228.40 ft. 69.6 m
FIG. 3
Auxiliary 12 VDC power supply wiring diagram
PWR+
AXP/TX
AXM/RX
GND-
PWR+
AXP
AXM
GND-
AXlink connector on
AXB-FBM
External equipment
PWR+
GND-
Local 12 VDC power supply
PWR connector on
AXB-FBM
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