Juniper T640 Hardware Manual page 228

T640 Core Router Hardware Guide
196
For further description of the output from the commands, see show chassis environment
pem.
user@host> show chassis environment pem
For DC-powered routers with two-input 160-A DC power supplies, three-input 240-A
DC power supplies or four-input 240-A DC power supplies, the output is similar to
the following:
PEM 0 status:
State
Temperature
DC Input:
DC Output
FPC 0
FPC 1
FPC 2
FPC 3
FPC 4
FPC 5
FPC 6
FPC 7
SCG/CB/SIB
PEM 1 status:
State
Temperature
DC Input:
DC Output
FPC 0
FPC 1
FPC 2
FPC 3
FPC 4
FPC 5
FPC 6
FPC 7
SCG/CB/SIB
For two-input 160-A DC power supplies, three-input 240-A DC power supplies in
mode, and four-input 240-A DC power supplies, the current sharing between
2–INPUT
DC power supplies relies on equal voltages at the input terminals of the power
supplies. However, if the voltages do not match, the router operates normally as
long as the DC input voltages are within the operating range provided in
Power System Electrical Specifications" on page
For DC-powered routers with six-input DC power supplies, the output is similar to
the following:
user@host> show chassis environment pem
PEM 0 status:
State
Temperature
DC Input:
INPUT 0
INPUT 1
INPUT 2
INPUT 3
INPUT 4
INPUT 5
Online
24 degrees C / 75 degrees F
OK
Voltage Current
0 0
54558 981
54558 2800
54700 2225
54375 2387
54308 3543
54558 1287
54616 2650
54150 181
Online
23 degrees C / 73 degrees F
OK
Voltage Current
0 0
50691 0
50766 0
50725 0
50725 0
50766 0
50808 0
50625 0
50300 0
427.
Online
34 degrees C / 93 degrees F
OK
Voltage(V) Current(A)
53.500 7.437
53.750 10.812
53.125 9.562
53.625 11.125
53.750 9.875
53.250 9.500
Power Load
0 0
53 7
152 20
121 16
129 17
192 25
70 9
144 19
9 0
Power Load
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
"T640 DC
Power(W) Load(%)
397 52
581 77
507 67
596 79
530 70
505 67
Copyright © 2013, Juniper Networks, Inc.