CRS-180 70/140 MHz IF 1:1 Redundancy Switch
MN/CRS180.IOM
Modem and Switch Configuration
Revision 11
4–10
Because the modem automatically detects if it is connected to a 1:1 redundancy system, the
steps required to configure both modems are minimal. Modem configuration, monitor and
control are possible through local or remote means (Figure 4-1):
•
Local Control – Use the modem front panel to fully configure, monitor, and control the
modem operation:
o
The LEDs indicate, in a summary fashion, the status of the modem.
o
The VFD (Vacuum fluorescent Display) is an active display showing two lines of 24
characters each. It produces a blue light with adjustable brightness. Nested menus
display all available options and prompt you to carry out a required action.
o
The keypad comprises six individual keyswitches. The keys have a positive ‘click’ action
that provides tactile feedback. Enter data via the keypad. Data, prompts, and messages
are displayed on the VFD.
•
Serial Remote Control – Configuration, monitoring and control of redundant systems is
possible via remote means over an RS-485 multi-drop bus using the Windows Command-
Line, where data is transmitted in asynchronous serial form using ASCII characters.
•
Ethernet Remote Control – Configuration, monitoring and control of redundant systems is
possible via remote means over an Ethernet connection using the Telnet Command Line
Interface (CLI) or the CDM-570L/AL HTTP (Web Server) Interface.