Terrasat IBUC 3, Operation Manual

Page: 24 / 236

System Components
|
2-2
Engineered to Endure
System Components
The interfacility link (IFL) between the ODUs and the L-band modem uses 950 MHz
to 2.0 GHz (L-band) as the interface frequency. This approach enables transmission
and reception over the entire satellite band as opposed to a single transponder. The L-
band IFL can also carry associated signals such as 10 MHz and DC voltage which
simplify installation and reduce costs. Terrasat IBUC systems can be used for single
channel per carrier/multiple channels per carrier (SCPC/MCPC), point - to - point, or
point - to - multiple point network applications (such as voice, data, video, or IP
services). The integrated RJ45 connector enables Telnet, SNMP and the embedded
Web Pages for monitor and control purposes. Its smaller form factor and lighter
weight make the IBUC
3
and IBUC
3 G
ideal for situations where mobility is key.
These smaller models can be carried in a backpack/case or mounted on antennas that
can be quickly assembled and disassembled. See Figure 2.4 on page 2-15 through
Figure 2.5 on page 2-16 for typical equipment configurations.
The IBUC
3
and IBUC
3
G
are available in a variety of frequency bands as listed in
Table 2.1 and Table 2.2 . The IBUC houses the IF interface (demux), the upconverter,
the monitor and control (M&C) card, a DC - to - DC converter and associated circuitry
and a solid state power amplifier (SSPA) assembly. The IBUC can also house an
optional internal 10 MHz reference signal module. Higher-power IBUCs also have an
external cooling fan assembly. The input interface to the IBUC connects to a 50

or
an optional 75

coaxial cable that carries the L-Band transmit signal. This IFL
(interfacility link cable) interface can also carry an external 10 MHz reference for the
oscillator signal band and DC power.