Functional Description; Figure 1-2. Cdm-740 Network Topology - Comtech EF Data CDM-740 Installation And Operation Manual

CDM-740 Advanced Satellite Modem
Introduction
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1:1 redundancy switch compatibility
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The CDM-740 front panel features a Video Fluorescent Display (VFD) and keypad for
local configuration and control; additionally, the unit may be remote-controlled.
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The CDM-740 is compact – 1RU high X 18.14" deep – and consumes 80 watts
(maximum, without BUC supply) or 300 watts (maximum, with BUC supply).
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Multiple configurations available, including receive-only and duplex.
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Functional Description

Figure 1-2 illustrates the CDM-740 Advanced Satellite Modem as deployed in a typical satellite-
based communications network.
The CDM-740 utilizes a high performance processor and a real-time operating system (RTOS)
combined with multiple Field Programmable Gate Arrays (FPGAs) for optimal performance. All
non-volatile memory is provided by both onboard and Compact Flash devices. Field upgrades are
easily loaded via the Ethernet port; software-based options are added to the unit via FAST (Fully
Accessible System Topology) upgrade.
The CDM-740 runs on an embedded operating system and does not have moving parts for media
storage. This design provides carrier class reliability and high speed, purpose-driven processing.
The unit can be managed through multiple interfaces providing options for both in-band and out-
of-band monitor and control:
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SNMP MIB II and Private MIB, HTTP Web-based Management
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Telnet (CLI), Terminal Port (CLI)
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Serial 232/485 and Front Panel control

Figure 1-2. CDM-740 Network Topology

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