Comtech EF Data CRS-500, Инструкция по установке и эксплуатации

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CRS-500 1:N Redundancy System
Revision 4
Introduction 1–4 MN-CRS-500
1.2 CRS-500 1:N Redundancy System Features
Chapter 2. SPECIFICATIONS
Key reliability features of the CRS-500:
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Flexible configuration – 1:10 (maximum) for standard redundant operation
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Primary traffic paths are maintained, error free, when power is removed
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No interruption of traffic data when Traffic Modem Interface (TMI) modules are removed
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Dual independent & hot-swappable/uninterrupted Alternating Current (AC) or Direct
Current (DC) power supplies
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Bridged (hot-standby) Traffic Modem(s) ensure quick availability for backup
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Programmable holdoff times to back up or restore
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Modem Prioritization – You may define which Traffic Modem takes operational priority
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Audible alarm – Programmable to activate based on various changes in status
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Remote (serial or Ethernet) Monitor and Control (M&C)
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Multiple user interfaces (Web/HTTP, SNMP, Telnet, EIA-232/485, front panel)
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A Light Emitting Diode (LED) summary panel shows switch and modem status, bridge
and online/offline status
Construction Features:
The CRS-500 is modular in construction. The DSU utilizes a Redundant Modem Interface (RMI)
and TMIs – replaceable modules that are installed into slots in the DSU front panel.
Ease of Connection:
Connection to the Traffic modems and Redundant Modem is remarkably easy – rack cabling is
simplified and the number of potential failure points is reduced.
TMI Monitoring:
Terrestrial user clock and data signals to and from a Traffic Modem are routed through a TMI via
a set of relays. This is arranged so that the de-energized (unpowered) state connects the data
signals directly through to the Traffic Modem. If the power supplies to the system are lost, or if a
traffic-carrying TMI is removed, no interruption of the traffic occurs.
CRS-280/280L Option:
A CRS-280/280L ISU is required when the Traffic modems within the redundancy group connects
to more than one converter or with different polarizations or different satellites. The Traffic
modems can also be used when one or more modems within the redundancy group connect to
the other polarization of the antenna or to multiple antennas.