User Manual

ADCP-75-126 • Issue B • April 2002 • Section 1: Overview
Page 1-2
© 2002, ADC Telecommunications, Inc.
Figure 1-1. System Overview Diagram
2.2 Base Transceiver Station Interface
The HU is co-located with the BTS and interfaces directly with the BTS over coaxial cables. In
the forward path, the HU receives RF signals from the BTS. The HU digitizes the RF signals
and then converts them to digital optical signals for transport to the RU. In the reverse path, the
HU receives digital optical signals from the RU. The HU converts the digital optical signals
back to RF signals for transmission to the BTS.
EBTS
EBTS
EBTS
DIGIVANCE ELEMENT
MANAGEMENT SYSTEM
RF
RF
RF
HOST UNIT
HOST UNIT
HOST UNIT
REMOTE UNIT
REMOTE UNIT
REMOTE UNIT
NETWORK
OPERATIONS
CENTER
(REMOTE INTERFACE)
LAPTOP
(LOCAL INTERFACE)
DATA
NETWORK
CONTROLLER AREA
NETWORK
RS-232 ASCII
RS-232
RS-232
16969-B
CD-ROM WITH EMS
SOFTWARE