DNET-200 SCPC/MCPC
satellite communication system 
DNET-200 SCPC/MCPC satellite
communication system is an integrated service
duplex satellite communication system made by
ComtechEFData, USA. It can be used as a private or public
network, supporting various services in a wide
satellite-covered area with SCPC/MCPC/FDMA technology.
DNET-200 can provide capability of integrated
applications of data, voice, fax or image. DENT-200
SCPC/MCPC satellite communication system can be
flexibly configured as star or mesh topology based
on the request of customers. It supports point
to point, point to multi-point traffic transmission
within a network, and also supports simplex or
duplex links. As an option, a network management
system can be used to monitor and control the
whole network. Each station within the system
can be easily expanded or modified according to
customer's request. The system has the well-known
excellent characteristics of high reliability,
large transmitting capacity, cost-effectiveness,
with an easy to expand, manage and maintain.
System application:
 File/data
interactive transmission
Paging
networking system
Voice,
fax, image service
Video
conferencing
LAN
interconnectivity
High
speed data collection
Distance
medicine
Internet
backbone
System characteristics:
High
quality SCPC/MCPC/FDMA star satellite digital
communication
system
Easy
system expansion and modification by adding/decreasing
quantity of
device at the remotes
Transparent
transmission supporting various communication
protocol,
satisfying the user terminal demand
Flexible
redundant configuration available for both center
station and
remote station, ensuring reliability of system
DMAC
M&C system, based on Windows NT?, can display
satellite
device parameter, fault information, and configure
device at the remote
station.
DialMAC
M&C system, a telephone dial-up M&C system,
can monitor
and control satellite device, ensuring the network
M&C function even if
the satellite link breaks off
High
reliable components ensure continuous reliable
running
Overcomes
Ku-band rain fade with AUPC
Supports
integrated service of voice, data, fax and image
through Mux
Figure
System composition:
Center station and remote duplex station can consist
of outdoor RF unit and satellite Modem.
ODU:
C-band: CST-5005, CST-5000,etc
Ku-band: KST-2000A, KST-2000L,etc
Satellite Modem:
SDM-300, SDM-8000
ODU redundancy switch:
C-band: RSU-503
Ku-band: RSU-503L
Satellite Modem redundancy switch:
SMS-301 1:1 backup
SMS-758 1:8 or 2:8 backup
SMS-7000 1:8 or 2:8 backup
System performance:
C-band
or Ku-band
Data
rate ranges from 2.4kbps to 9.312Mbps
BPSK,
QPSK, 8PSK, 16QAM modulation
Viterbi,
Sequence or RS (Reed-Solomon)
Selective
EIA-232, EIA-442, V.35 or G.703 interface
Equipped
with MUX, it can support integrated service of
voice, data and image. MUX provides EIA-232, V.35,
EIA-442/499 and analog voice interfaces such as
4-line E&M, 2-line FXO and G3 fax.
C-band
ODU Power: 5W, 10W, 20W, 40W, 75W or 125W.
Ku-band ODU Power: 2W, 4W, 8W, 16W, 25W, 40W or
80W.
Remote duplex station can also
use DST-300Ku or DST-300C satellite terminal
systems as well.
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