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Chapter 1
Cisco XR 12404 Router Overview
DC PEMs
Figure 1-13
DC PEM and PDU Components
1
IN PU T
– 48 /6 0V
35 A
5
7
6
3
1
DC PDU
2
DC PEM
3
PEM captive screws
4
Status LEDs
OL-13830-02
Table 1-9
AC-Input PEM LED Indicators (continued)
LED Label
Color
Input OK
Green
Output Fail
Amber
Each DC PEM operates from a nominal source DC voltage of -48 to -60 VDC and
requires a dedicated 35-Amp service.
Figure 1-13
identifies the components of a DC power supply.
2
3
IN PU T
O K
5
6
7
Function
The AC power source is present and operating
within the specified limit.
Indicates a failure in the PEM.
O UT PU
T
O UT PU
O K
T
FA IL
4
On/Off switch
PDU captive screws
PDU terminal block
Cisco XR 12404 Router Installation Guide
Power Entry Modules
1-25
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Table of Contents
Troubleshooting
