User's Manual

PN 8100-40 Help Hot Line (U.S. only): 1-800-530-9960 4-3
620004-0 Rev. B
LGCell Expansion Hub Front Panel
4.1.1 MMF Downlink/Uplink Port
The Expansion Hub’s MMF downlink/uplink port transmits and receives optical sig-
nals to/from the Main Hub using industry-standard 62.5µm/125µm MMF cable.
There is one MMF port (labeled
MAIN HUB) on the Expansion Hub’s front panel. The
MMF port has two female ST optical connectors: one for downlink (input) and one
for uplink (output).
• MMF Downlink Connector
This female ST optical connector (labeled
DOWN) is used to receive downlink opti-
cal signals from the Main Hub.
• MMF Uplink Connector
This female ST optical connector (labeled
UP) is used to transmit uplink optical
signals to the Main Hub.
Figure 4-3 MMF Downlink/Uplink Port on the Expansion Hub
Uplink/Output to Main Hub
Downlink/Input from Main Hub
Female ST connector
Female ST connector
AC POWER
LGCell
TM
Expansion Hub
SYNC
POWER
SYNC
LINK
STATUS
ANTENNA PORTS
DOWN
UP
MAIN HUB PORT