Comtech EF Data CDM-600 Uživatelský manuál stáhnout pdf (Strana 1)

Modems

CDM-570 & CDM-570L

Satellite Modems

INTRODUCTION

Ideal for optimizing satellite communications, the

CDM-570 and the CDM-570L are designed to meet the

needs of low-cost terminals with 70/140 MHz interfaces

to conventional Up & Down Converters, or L-Band

interfaces to Low Noise Block Converters (LNBs) and

Block Up Converters (BUCs).

The modems include synchronous EIA-530/-422, V.35,

EIA-232 and G.703 interfaces. In addition, an optional

Internet Protocol (IP) Module is available with a

10/100BaseT Ethernet interface for LAN and network

applications.

The architecture is firmware and FPGA-based, and the

internal Flash memory allows easy updating via the

Ethernet port, or front panel USB port. The modem

offers exceptional flexibility and cost-effective

performance in a 1RU enclosure.

FEATURES

• CDM-570: 50 to 90 or 100 to 180 MHz IF range

CDM-570L: 950 to 1950 MHz IF range

• Fast acquisition demodulator (± 32 kHz acquisition

range, 64 kbps, Rate 1/2 QPSK: 150 ms average)

• Modulation types: BPSK, QPSK, OQPSK, 8-PSK,

8-QAM, 16-QAM

• Data rate range from 2.4 kbps to 9.98 Mbps

• Forward Error Correction choices include Turbo

Product Coding, Viterbi, Reed-Solomon, and TCM

• Automatic Uplink Power Control (AUPC)

• Embedded Distant-end Monitor and Control (EDMAC)

• Asymmetric Loop Timing

• Built-in 1:1 redundancy controller (Y-cables for data,

simple and inexpensive external module for IF and RF)

• CDM-570: FSK communications to CSAT-5060 or

KST-2000A

• CDM-570L: Operation with LNB and BUC

• CDM-570L: BUC 10 MHz reference and FSK

communications and optional BUC power supplies

• CDM-570L: 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 with Web browser, SNMP and

Telnet

• IP Module option

• Vipersat Management System (VMS)

• 1:1 and 1:10 redundancy switches available

FEATURE ENHANCEMENTS

Enhancing the modem’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-570 offers all traditional FEC methods and

incorporates an optional Turbo Product Codec (TPC).

TPC is a FEC technique that delivers significant

performance improvement when compared to Viterbi

with concatenated Reed-Solomon. TPC simultaneously

offers increased coding gain, lower decoding delay, and

significant bandwidth savings.

The range of code rates offered spans Rate 5/16

through Rate 0.95, depending on modulation type.

EDMAC OPERATION

A special feature of the CDM-570 is its ability to monitor

and control 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

The operator may configure and monitor the modem

from the front panel, or through the remote M&C port.

Ten complete 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 (Eb/No and AUPC

performance) for Quality of Service (QoS) reporting

purposes.

In addition to the traditional serial port M&C, the CDM-

570 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-570

provides advanced features for maximizing satellite link

efficiency in IP networks.

Optionally, the CDM-570 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.

1 2 3 4

Shrnutí obsahu

Strany 1 - Satellite Modems

ModemsCDM-570 & CDM-570L Satellite Modems INTRODUCTION Ideal for optimizing satellite communications, the CDM-570 and the CDM-570L are designed to

Strany 2 - ENVIRONMENTAL AND PHYSICAL

Optimizing Satellite CommunicationsCDM-570 & CDM-570L Satellite Modems SYSTEM SPECIFICATIONS Frequency Range CDM-570: 50 to 90 or 100 to 180 MHz

Strany 3

www.comtechefdata.com DEMODULATOR CDM-570 CDM-570L Input Power Range -30 to -60 dBm (-130 + 10 Log Symbol Rate) dBm minimum, (-90 + 10 Log Symbo

Strany 4 - VMS Integration

IP Module & VMS Integration 2114 West 7th Street, Tempe, Arizona 85281 USA Voice 1 480 333 2200 Fax 1 480 333 2540 Email [email protected]

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