© Copyright 2008, Aventura Technologies, Inc.
3
75 ohms. For optimum performance, the use of the shortest practical length of coax cables is
recommended.
FIBER CONNECTION
The fiber optic connections are made via ST (multimode fiber) or FC (single-mode fiber) connectors,
located on the rear of the units.
AUDIO INPUT / OUTPUT CONNECTIONS
Audio input/output connections are made via an RJ-45 connector on the front of each unit. The pinout of
the audio RJ-45 connector is shown in Figure 2.
An RJ-45 to 8-contact terminal block adapter is supplied with the unit to allow for easy termination of
the wires to the units.
Alternatively, a standard category 5e Ethernet patch cord can be used to plug directly into the data RJ-
45 connector. The far side of the patch cord can then be terminated appropriately. Consult the
installation instructions for your audio device if you are unsure which two wires on the audio device are
the drive (audio out) wires and which two wires are the receive (audio in) wires.
Please note that Audio In on the
FBR-4V2A(M/S)-TX
becomes Audio Out on the
FBR-4V2A(M/S)-
RX
after going across the fiber. The reverse flow follows the same orientation.
STATUS INDICATORS
The unit provides the following LED status indicators to aid in installation and troubleshooting:
POWER INDICATOR
A bi-color LED indicator monitors the voltage at the module’s input connector and the operating
internal voltage of the module. The power status associated with this LED is summarized below.
Power Indicator
Power Status
Green
Proper Input Voltage Present – Proper Internal Operating Voltage
Present
Red
Proper Input Voltage Present – Internal Operating Voltage Faulty
Off
No Input Voltage Detected
OPTICAL LINK INDICATOR
A bi-color LED indicator monitors the power of, and proper synchronization with the optical input
signal that is being received at the
FBR-4V2A(M/S)-TX
and/or
FBR-4V2A(M/S)-RX
. The Optical
Link status associated with this LED is summarized below.
Optical Link Indicator
Optical Status
Green
Proper Optical Input Present
Red
Optical Input Not Detected
Off
Check Power Supply
