Chapter 1. introduction, 1 overview, 1 modem features overview – Comtech EF Data CDM-570A User Manual
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Chapter 1. INTRODUCTION
1.1 Overview
Unless otherwise specified, these products are collectively referred to throughout
this manual as “the modem”. When equipped with the optional High-Performance
Packet Processor, the modem may also be referred to as the CDM-570A-IP,
CDM-570AL-IP, CDMR-570AL-IP, or simply the CDM-IP.
Figure 1-1. CDM-570A and CDM-570AL Satellite Modems
Comtech EF Data’s CDM-570AL and CDMR-570AL Satellite Modems are intended for L-Band closed
network applications. The CDM-570A Satellite Modem is the 70/140 MHz version of the same
modem. Either frequency version serves as a drop-in replacement for the CDM-570L/CDMR-570L
(L-Band) or CDM-570 (70/140 MHz) Satellite Modems. Apart from the IF frequency band, the
modems are essentially identical. The modem is 100% backwards compatible with its
predecessors, but incorporates new features and expansion capabilities.
1.1.1 Modem Features Overview
• The CDM-570AL provides an L-Band IF frequency range from 950 to 2250 MHz.
• The CDM-570A provides a 70/140 MHz IF frequency range from 50 to 90 MHz and 100 to
180 MHz.