Ericsson MINI-LINK TN R4 ETSI - Page 17

Basic Node
PFU
FAU
NPU
10067
07/NPU
06
05
04
03
02
08/FAU2
01/PFU3
00/PFU3
M
M
U
2
E
1
5
5
M
M
U
2
F
15
5
NPU3
E
1
/
D
S
1
E
1
/
D
S
1
LT
U
3
1
2
1
E
1
/
D
S
1
PFU3
PFU3
FAU2
M
M
U
2
F
1
5
5
Figure 10 AMM 6p C
07/NPU
06
05
04
03
02
08/FAU2
01/PFU3
00/PFU3
PFU3
PFU3
FAU2
M
M
U
2
E
1
5
5
M
M
U
2
F
1
5
5
NPU3
E
1
/
D
S
1
E
1
/
D
S
1
LT
U
3
1
2
1
E
1
/
D
S
1
PFU
FAU
NPU
10068
Figure 11 AMM 6p D
3.2.2.1 Power Supply
AMM 6p C/D is power supplied by –48 V DC or +24 V DC, connected to the
PFU3 B. The power is distributed from the PFU3 B to the other units, via the
power bus in the backplane of the subrack.
The power system is made redundant using two PFU3 Bs, utilizing the
redundant power bus.
+
_
+
_
PFU
External Power Supply
10069
PFU3 B: –48V DC or +24V DC
Figure 12 Power supply for AMM 6p C or D
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