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© 2004 Comtech EF Data Part Number DS-CDM570L.DOC Page 1 of 4 9/22/04
CDM-570L
L-Band Satellite Modem
2.4 kb
s to 5 Mb
s
MODEMS
DM-
7
L
INTRODUCTION
Ideal for optimizing satellite communications, the
CDM-570L is designed to meet the needs of low-cost
terminals with L-band interfaces to Low Noise Block
Converters (LNBs) and Block Up Converters (BUCs).
The CDM-570L includes synchronous EIA-530/422, V.35,
EIA-232 and G.703 interfaces. An optional Internet Protocol
(IP) Module is available with a 10/100 BaseT Ethernet
interface for LAN and network applications.
The architecture is firmware and FPGA-based, and the
internal Flash memory allows easy updating via the serial
port, or front panel USB port. The modem offers
exceptional flexibility and cost-effective performance in a
1RU enclosure.
FEATURES
• 950 to 1950 MHz IF range
• Fast acquisition demodulator (± 32 kHz acquisition
range, 64 kbps, Rate1/2 QPSK: 150 ms average)
• BPSK, QPSK, OQPSK, 8-PSK, 16-QAM modulation types
• Data rate range from 2.4 kbps to 5 Mbps
• Forward Error Correction choices include Turbo Product
Coding, Viterbi, Reed-Solomon, and TCM
• Automatic Uplink Power Control (AUPC) and EDMAC
• Asymmetric Loop Timing
• Built-in 1:1 redundancy controller (Y-cables for data,
simple and inexpensive external module for RF)
• Operation with LNB and BUC
• BUC 10 MHz reference and FSK communications and
optional BUC Power Supplies
• LNB Power Supply and 10 MHz reference
• Backwards compatible with the CDM-500/CDM-550,
CDM-550T and CDM-600 and CDM-600L
• Interoperable with SDM-300A, SDM-300L3
• Ethernet M&C interface
• IP Module option
• Vipersat Management System (VMS)
FEATURE ENHANCEMENTS
Enhancing the CDM-570L’s performance is easy. Additional
features are added quickly on site, using FAST access
codes purchased from Comtech EF Data. To enable these
features, simply enter the code at the front panel.
TURBO PRODUCT CODING
The CDM-570L offers all traditional FEC methods and
incorporates an optional Turbo Product Codec (TPC). TPC
simultaneously offers increased coding gain, lower
decoding delay, and significant bandwidth savings. The
range of code rates offered spans Rate 5/16 through 0.95,
depending on modulation type.
EDMAC OPERATION
The CDM-570L monitors and controls the distant end of a
satellite link using a Comtech EF Data proprietary overhead
channel. This framed mode is called EDMAC (Embedded
Distant-end Monitor And Control). User data is framed and
extra bits are added to pass control, status, and Automatic
Uplink Power Control information. This process is
completely transparent to the user.
REMOTE CONTROL
Configuring and monitoring the modem is accomplished
from the front panel, or through the remote M&C port. Ten
configurations may be stored in the modem. An Event log
stores alarm and status information in non-volatile RAM,
while the Link Statistics log stores link performance (E
b
/N
o
and AUPC performance) for QoS reporting purposes.
In addition to the traditional serial port M&C, the CDM-570L
offers a 10/100BaseT Ethernet port for management
functions. It incorporates a Web Server (HTTP), SNMP
agent, and Telnet capability.
IP MODULE AND VIPERSAT NETWORKS VMS
When configured with the IP Module, the CDM-570L
provides advanced features for maximizing satellite link
efficiency in IP networks.
Optionally, the CDM-570L Modem with IP module can be
integrated with the Vipersat Management System (VMS) to
provide a fully automated network and capacity
management tool designed specifically for satellite
networks.
Read more about the IP Module and VMS capabilities on
page 4.
• Fast acquisition demodulator
• Turbo Product Coding
• BPSK, QPSK, OQPSK, 8-PSK,
16-QAM
• USB port for rapid re-flash
• 10/100 Ethernet M&C port
• Web Server
• SNMP
• Telnet
• IP Module
• VMS Integration
(252 strony)
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