O3b Basic System Architecture
Introduction
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OceanTRx™4-500 O3b System Installation Guide
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The OceanTRx™4-500 O3b system consists of the following main elements:
OceanTRx™4-500 Antenna
– either two or three antennas are installed. Two are
operational and a third antenna (if installed) serves as backup.
OSS
(Orbit System Selector) – RF switch installed below deck. It is controlled by the
CCU for switching up to 3 systems L-Band Signals.
CCU
(Control and Communication Unit) – installed below deck. Provides single source
management and control of the system.
The following figure shows the RF and control signals path of a
single
Antenna.
Satellite Modem
ETH Switch
LAN
DL L-Band
UL L-Band
10MHz
1
UL L-Band
+ 10MHz
RF
CCU
OSS
L-Band
DL L-Band
Antenna 1
Above Deck Equipment
Below Deck Equipment
O3B MNG
BU
C
LN
B
Figure
1-2: Basic System Architecture Showing Signal Path
Note the following:
All four signals are routed via the LMR cable: LAN, L-Band UL, L-band DL and 10Mhz.
Downlink (DL) signal – signal from LNB (Low Noise Block)
Uplink (UL) signal – signal to BUC (Block Up Converter)
