User's Manual

Table Of Contents
Expansion Hub Overview
InterReach Fusion Wideband Installation, Operation, and Reference Manual Page 45
D-620616-0-20 Rev K TECP-77-044 Issue 9 March 2015 © 2015 TE Connectivity
Optical Fiber Uplink/Downlink Connectors
The optical fiber uplink/downlink port transmits and receives optical signals between the
Expansion Hub and the Main Hub using industry-standard SMF or MMF cable. The fiber port has
two female SC/APC connectors:
Optical Fiber
Up
link Connector—The UPLINK connector transmits (output) uplink optical
signals to the Main Hub.
Optical Fiber Down
link Connector—The DOWNLINK connector receives (input) downlink
optical signals from the Main Hub.
CAUTION! To avoid damaging the Expansion Hub’s fiber connector ports, use only SC/APC fiber cable
connectors. Additionally, use only SC/APC fiber connectors throughout the fiber network,
including fiber distribution panels. This is critical for ensuring system performance.
LED Indicators
The units front panel LEDs indicate fault conditions and commanded or fault lockouts. The LEDs
do not indicate warnings or whether the system test has been performed. Only use the LEDs to
provide basic information or as a backup when you are not using AdminBrowser.
Upon power up, the Expansion Hub goes through a five-second test to check
the LED lamps.
During this time, the LEDs blink through the states shown in Table 35, letting you visually verify
that the LED lamps and the firmware are functioning properly.
NOTE: Refer to “Maintenance and Troubleshooting” on page 181 for troubleshooting using the LEDs.
Unit Status and DL/UL STATUS LEDs
The Expansion Hub unit status and DL/UL STATUS LEDs can be in one of the states shown in
Table 35. These LEDs can be:
Steady green
Steady red
Off
Table 35. Expansion Hub Unit Status and DL/UL STATUS LED States
LED State Indicates
Green/Green
Green/Green
The Expansion Hub is connected to
power and all power
supplies are operating.
The Expansion Hub is not reporting a fault or lockout
condition; but the system test may need to be performed or
a warning condition could exist (use AdminManager to
determine this).
Optical power received is above minimum (the Main Hub is
connected) although the cable optical loss may be greater
than recommended maximum.
Optical power transmitted (uplink laser) is normal and
communications with the Main Hub are normal.
POWER
EH STATUS
DL STATUS
UL STATUS