Chapter1 Cisco XR 12406 Router Overview
Line Cards
1-20
CiscoXR 12406 Router Installation Guide
OL-13831-01
DC Power Subsystem
The DC power subsystem consists of the following system components:
•DC PDU (one)
•DC-input PEMs (one for nonredundant operation; two for redund ant
operation)
Caution To ensure that the chassis configuration complies with the required power
budgets, use the on-line power calculator. Failure to properly verify the
configuration may result in an unpredictable state if one of the power units fails.
Contact your local sales representative for assistance.

DC PDU

Facility DC power connects to DC-powered routers though the connector blocks
on the DC PDU (Figure1-8).
DC Output
Power
On Power supply is operating normally in a
power-on condition.
Off Power supply is operating in a fault
condition and shutdown has occurred.
Table1-1 AC-Input Power Supply LED indicators (continued)
LED Label Function State Description