Chapter 2 • Subsystems
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1037852-0001 Revision A
CDS replaces the IFSS-TC, which shipped with older systems.
Furthermore, while the introduction of CDS is an upgrade, HX
systems continue to support both CDS and IFSS-TC.
CDDM
The CDDM is a 6U wide module that plugs into one of the I/O
slots in the front of a cPCI chassis.
CDIM
The CDIM is a 6U wide module that plugs into one of the I/O
slots in the rear of a cPCI chassis. The CDIM card accepts a
wideband IF input signal containing one or more inroutes,
centered at 70 MHz with a bandwidth of 36 MHz from the
external NOC equipment.
IF Subsystem-Turbo Code
system
In place of the CDS, most older systems have the IFSS-TC.
The IF Subsystem-Turbo Code (IFSS-TC) is a modular system
that:
•
Acts as the HX gateway satellite radio receiver.
•
Demodulates and decodes inroute signals received from
remote user modems via the satellite.
A typical redundant configuration includes:
•
Up to two compact peripheral component interconnect (cPCI)
chassis, that contain storage media, power supplies, control
processors (CPs), CP transition boards, and RCDs that
contain software radio modules (SRMs) and receive control
modules (RCMs)
•
One optional frequency distribution unit (FDU)
•
Up to two intermediate frequency distribution units (IFDUs)
•
One optional HNS timing control (HNSTC) distribution unit
(HDU)‘
A nonredundant system contains one cPCI chassis.
Return channel components
The NOC can be configured with one or more TDMA return
channel subsystems (TRCSs). The TRCS manages the return
channels associated with a group of satellite modems.
Return channel demodulator
The RCDs provide the demodulation of the TDMA burst return
channels. The RCD accepts the inroute data, extracts the traffic
data, and gives the traffic data to the DNCC. The RCD consists of
the SRM and RCM.
Summary of Contents for HX System
Page 1: ...1037852 0001 Revision A September 4 2008 HX System System Overview Release 1 2 7 ...
Page 8: ... Contents viii 1037852 0001 Revision A ...
Page 10: ... Figures x 1037852 0001 Revision A ...
Page 12: ... Tables xii 1037852 0001 Revision A ...
Page 24: ...Chapter 1 Overview 12 1037852 0001 Revision A ...
Page 26: ...Chapter 2 Subsystems 14 1037852 0001 Revision A Figure 3 HX Subsystems and LAN Connections ...
Page 50: ...Chapter 4 Network security 38 1037852 0001 Revision A ...
Page 62: ...Chapter 5 Bandwidth management 50 1037852 0001 Revision A ...
Page 70: ...Chapter 6 IP features 58 1037852 0001 Revision A ...
Page 80: ...Chapter 8 Transmission features 68 1037852 0001 Revision A ...
Page 88: ...Chapter 10 HX options 76 1037852 0001 Revision A ...
Page 96: ...Appendix B Transportable Gateway TGW 84 1037852 0001 Revision A ...
Page 100: ... Acronyms and abbreviations 88 1037852 0001 Revision A ...
Page 106: ... Index 94 1037852 0001 Revision A ...