Idu Functional Design - SAF CFM-LM Series Technical Description

I N D O O R U N I T

IDU Functional Design

The CFM IDUs consist of the following functional blocks (see Figure 12 and Figure 13):
•
Cable interface
•
Base-band modem
•
Power supply unit
•
Management controller
•
Multiplexer (MUX) board (refers to the multiplexer, E1 and modular Fast Ethernet
bridge IDUs only);
•
Ethernet Interface board (refers to the CFM-8-REB only)
•
Traffic interfaces
IDU
Cable
Interface
Power
Supply Unit
IDU
Cable
Interface
Power
Supply Unit
Base-band
Modem
Figure 12. The CFM series E1 IDU block diagram
Base-band
Modem
Figure 13. The CFM-8-REB IDU block diagram
37
RS232 Ethernet LCD
Management Controller
MUX
. . . . (4 ... 16) x E1 Interfaces . . . .
RS232 Ethernet LCD
Management Controller
Ethernet
Interface
Board
Alarm Port