Comtech EF Data CRS-500, Installation And Operational Manual

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CRS-500 1:N Redundancy System
Revision 4
Introduction 1–5 MN-CRS-500
1.3 CRS-500 Standard and Optional Components Overview
1.3.1 Control Switch Unit (CSU)
Feature Description Feature Description
1 CSU Front Panel View 2 CSU Rear Panel View
A Video Fluorescent Display (VFD) A CRS-512 Ethernet M&C Interface
B 6-Button Keypad B CRS-530 System Controller Module
C Switch Status LED Group C Standard CRS-541 AC Power Supply
D Traffic Modem Status LED Group D Optional CRS-551 DC Power Supply
E Redundant Modem Status LED Group
F Rack Handles
Figure 1-3. CRS-500 Control Switch Unit
The CRS-500 CSU (Figure 1-3) is constructed as a 1RU-high, rack mount chassis, which can be
free-standing, if desired. Rack handles at the front (Feature 1F) ease placement into and removal
from a rack. This provides maximum control of the Redundancy System in the smallest amount of
front-side rack space.
The CSU serves as the controller for the complete CRS-500 1:N Redundancy System. The
switch uses Ethernet to communicate to all modems.
The CRS-530 System Controller Module (Figure 1-3, Feature 2B and Figure 1-5) stores each
Traffic Modem configuration. The system uses this information to program the Redundant Modem
if a Traffic Modem fails. The CSU contains an extensive M&C system and is fully controllable
from the front panel or remotely via EIA-232C/EIA-485 or the 10/100 Ethernet port provided on
the CRS-530. You must connect to this port to have remote control to any modem.