InterReach Unison Installation, Operation, and Reference Manual
5-1
D-620003-0-20 Rev J
LGC CONFIDENTIAL
SECTION 5
Unison Remote Access Unit
The Remote Access Unit (RAU) is an active transceiver that connects to an Expan-
sion Hub using industry-standard Cat-5/5E/6 screened twisted pair (ScTP) cable,
which delivers RF signals, configuration information, and electrical power to the
RAU.
An RAU passes RF signals between an Expansion Hub and an attached passive
antenna where the signals are transmitted to wireless devices.
Figure 5-1
Remote Access Unit in a Unison System
Unison Expansion Hub
RAU
Downlink Path:
The RAU receives downlink IF signals from an Expansion Hub via Cat-5/5E/6 cable. It converts the sig-
nals to RF and sends them to a passive RF antenna via coaxial cable.
Also, the RAU receives configuration information from the Main Hub via the Cat-5/5E/6 cable.
Uplink Path:
The RAU receives uplink RF signals from a passive RF antenna via coaxial cable. It converts the signals to IF
and sends them to an Expansion Hub via Cat-5/5E/6 cable.
Also, the RAU sends its status information to the Expansion Hub via the Cat-5/5E/6 cable.
Downlink to RAU
Uplink from RAU
Unison Main Hub
Downlink to antenna
Uplink from antenna
