Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 350

Information About the NM-1VSAT-GILAT Network Module
Figure 33-3
Figure
Callout
1
2
3
4
5
6
Cisco Network Modules Hardware Installation Guide
33-6
ODU Components
1
2
4
5
6
ODU Component
Low noise block converter
(LNB)
Transmit reject filter
Feed horn
Orthomode transducer
(OMT)
Solid state block converter
and power amplifier
(SSPA)
Reflector
Chapter 33 Connecting Cisco IP VSAT Satellite WAN Network Modules
3
Function
Amplifies and converts high-frequency satellite signals into
lower-frequency signals.
Filters out transmitted signals so that only signals received from
the satellite enter the LNB.
Captures signals from and transmits energy to the reflector.
Separates transmitted signals from received signals, which have
different polarization and frequency.
Amplifies and converts the low-frequency signals from the IDU
to high-frequency signals for transmission across the satellite
link.
Concave dish surface which focuses the energy received from
the satellite to the feed horn and which transfers the energy
transmitted by the feed horn to the satellite.
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