Comtech EF Data KST-2000B Dokumentacja Pobierz pdf (Strona 45)

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Chapter 1. INTRODUCTION

The CDM-600 (Figure 1-1) is an Open Network Satellite Modem, intended for both

Intelsat and closed network applications.

• It is compliant with IESS-308/309/310/315 specifications, but also adds

significant other features in closed network modes.

• It offers variable data rates from 2.4 to 20 Mbps, in BPSK, QPSK, Offset QPSK,

8-PSK, 8-QAM and 16-QAM modes. Viterbi, Sequential, concatenated Reed-

Solomon (RS), Trellis Coded Modulation (TCM), Turbo Product Coding (TPC)

and Low-density Parity Check Coding (LDPC) are provided as Forward Error

Correction (FEC) options.

• A full range of interface types is built in (no plug in cards required) including all

G.703 types, and Drop and Insert (both Open and Closed Network) operation

are available.

• The IF frequency range simultaneously covers 52 - 88 MHz and 104 - 176 MHz.

(Units manufactured after February 2005 cover 50 - 90 MHz and 100 - 180 MHz.

The opening screen shows CDM-600(E)- meaning Extended IF range. )

• The modem is compact, 1U high and 12 inches deep, and consumes only 25

watts (typical).

• It has a front panel VFD display and keypad for local configuration and control,

although it can be fully remote-controlled.

Figure 1-1. CDM-600

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Comtech EF Data KST-2000B Dokumentacja Strona 45