Mocomtech CDM-570L Manual Do Utilizador

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Chapter 1. INTRODUCTION 
 
Figure 1-1.  CDM-570/570L 
1.1 Introduction 
The CDM-570L is an L-band Satellite Modem, intended for closed network applications. 
The CDM-570 Satellite Modem is the 70/140 MHz IF version of the same modem. Apart 
from the IF frequency band, the two modems are essentially identical. 
•  Variable data rates from 2.4 kbps to 9.98 Mbps, in BPSK, QPSK, Offset QPSK, 8-
PSK, 8-QAM, and 16-QAM modes are offered.  
•  Viterbi, concatenated Reed-Solomon (RS), Trellis Coded Modulation (TCM), and 
Turbo Product Coding (TPC, IESS-315 compliant) are provided as Forward Error 
Correction (FEC) options.  
•  A full range of interface types is built in, including T1 and E1 G.703 types. 
•  The CDM-570 IF frequency range covers 50 to 90 and 100 to 180 MHz. 
•  The CDM-570L IF frequency range covers 950 to 1950 MHz. and supports external 
Block Up-Converters (BUCs) and low-noise block downconverters (LNBs). An 
optional BUC power supply, up to 150 Watts may be installed internally. 10 MHz 
reference signals are available to drive both BUC and LNB. LNB power and FSK for 
‘smart’ BUCs is standard. 
•  The CDM-570L is compact, 1U high and 16 inches deep, and consumes only 22 
Watts (typical, not including BUC power supply or IP module). The CDM-570 is 12 
inches deep and consumes 18 Watts (typical, not including IP module). 
•  They have a front panel VFD display and keypad for local configuration and control, 
although they can be fully remote-controlled.  
•  An optional integrated 10/100 BaseT Ethernet interface offers a wide range of 
network-based management options, such as SNMP, http (web server), and Telnet.