Optical Options And Requirements; Coaxial Cable Requirements - ADC Digivance Installation And Operation Manual

ADCP-75-110 • Issue 2B • July 2001

2.4 Optical Options and Requirements

Each DHU and its associated DEUs and DRUs are connected over a pair of fiber optic links.
One link transports the forward path optical signal and the other link transports the reverse
path optical signal. Either 50 or 62.5 micron core multi-mode fiber optic cable may be used
for the optical link. If 50 micron cable is used, the optical link may be up to 750 meters (2461
ft) in length. If 62.5 micron cable is used, the optical link may be up to 500 meters (1,641 ft)
in length. A diagram of the optical connections is shown in Figure 11.
DIGITAL
HOST
UNIT
PORTS 1-6
TX
DIGITAL
HOST
UNIT
PORTS 1-6
TX
Page 20
© 2001, ADC Telecommunications, Inc.
BASIC CONFIGURATION WITH DHU AND DRU
RX
BASIC CONFIGURATION WITH DHU, DEU, AND DRU
PORTS
1-6
RX TX
REVERSE PATH
FORWARD PATH
END-TO-END OPTICAL CONNECTOR/CABLE ASSEMBLY DIAGRAM
Figure 11. Digivance ICS Optical Connections
REVERSE PATH
FORWARD PATH
DIGITAL EXPANSION UNIT
RX TX
DIGITAL
REMOTE
FIBER PORT
TX
DIGITAL
REMOTE
HOST
PORT
FIBER PORT
RX TX
REVERSE PATH
FORWARD PATH
UNIT
RX
UNIT
RX