Ericsson MINI-LINK TN R3 ETSI Technical Description page 18

MINI-LINK TN R3 ETSI
Figure 9
Figure 10
3.2.1.1 Power Supply
AMM 2p is power supplied by –48 V DC or +24 V DC, connected to the NPU2.
The power is distributed from the NPU2 to the plug-in units, via the power bus
in the backplane of the AMM.
Figure 11
AMM 2p B is power supplied by –48 V DC or +24 V DC redundant power. Two
DC connectors at the left side of the front panel are connected to the backplane.
To achieve redundant power, two power sources must be connected.
12
NPU2
LTU3 12/1
AMM 2p
NPU3 FAU4
LTU3 12/1
AMM 2p B
External Power
_
Supply
+
–48 V DC or
+24 V DC
Power supply for AMM 2p
FAU4
NPU2
4/1555-CSH 109 32/1-V1 Uen B 2007-09-14
9976
9972
7019