Beijing Telestone Technology Co. Ltd WFDS-RUB Benutzerhandbuch
WFDS User Manual
TELESTONE Proprietary
© 2009 TELESTONE. All rights reserved.
3
2 WFDS
Remote
Units
2.1 About
This
Chapter
This chapter consists of the following sections:
z The
compendium
of
function
z Principle of Work and Specifications
z Application of RU
z RU Installation and Power Supply
2.2
The compendium of function
The remote unit is an active transceiver which connects the expansion unit or the main
unit. RU is the last step in the entire system, and it takes a very important part in the
whole system, that is amplifying.
unit. RU is the last step in the entire system, and it takes a very important part in the
whole system, that is amplifying.
RU receives UL fiber optical signal, then it transmitted into the optical module and
transform the optical signal into electric signal, after enlargement, it send by the external
connection antenna; in a similar way, equipment receives uplink RF signal by the
external connection antenna, and amplified in uplink then input to the optical module.
Then output the fiber optical signal to the EU (or MU) after the optical module transform
the electrical signal to the optical signal.
transform the optical signal into electric signal, after enlargement, it send by the external
connection antenna; in a similar way, equipment receives uplink RF signal by the
external connection antenna, and amplified in uplink then input to the optical module.
Then output the fiber optical signal to the EU (or MU) after the optical module transform
the electrical signal to the optical signal.
2.3
Principle of Work and Specifications
2.3.1 Principle
of
Work
The equipment includes the optical module, UL amplifier, DL amplifier, duplexer,
monitoring unit and power supplier.
monitoring unit and power supplier.
.DL: RU receives the DL fiber optical signal from the expansion unit or the main unit,
then the optical module transmits the optical signal into RF signal. After amplifying, the
signal is sent through coaxial cable by the RF antenna.
then the optical module transmits the optical signal into RF signal. After amplifying, the
signal is sent through coaxial cable by the RF antenna.
Meanwhile, RU can receive setting and inquiring information from Expansion and Main
Unit.
Unit.