Chapter 1. Introduction; Figure 1-1. Cdm-600L - Comtech EF Data CDM-600L Installation And Operation Manual

Chapter 1. INTRODUCTION

The CDM-600L (Figure 1-1) is an Open Network Satellite Modem, intended for Intelsat
applications.
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It is compliant with IESS-308/-309/-310/-314/-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,
and 16-QAM modes. Viterbi, Sequential, concatenated Reed-Solomon (R-S), Trellis
Coded Modulation (TCM), and Turbo Product Coding (TPC) 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 operation.
•
The IF frequency range covers : 950 - 1950 MHz.
•
It includes a programmable 13, 18, or 24V LNB power supply at the receive IF connector
center conductor, and optionally includes a 24 or 48V BUC power supply at the transmit
IF connector center conductor.
•
A low phase noise 10 MHz reference output is available at both the transmit and receive
IF connectors for use by the LNB or BUC.
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The modem is compact, 1U high and 18 inches deep, and consumes 57 watts (typical)
excluding BUC power supply and LNB power supply loads.
•
It has a front panel VFD display and keypad for local configuration and control, and it
can be fully remote-controlled.
Figure 1-1. CDM-600L L-Band Satellite Modem
1–1