Basic Node
3.2 Access Module Magazine (AMM)
The indoor part consists of an Access Module Magazine (AMM) with plug-in
units. This section describes the subrack types and their associated cooling
and power supply functions.
3.2.1 AMM 2p B
AMM 2p B is suitable for end site and repeater site applications.
02
03
02
03
NPU3
LTU3 12/1
FAU4
9972
L
LIFT
LIFT
Figure 7 AMM 2p B
It has two half-height slots, one equipped with NPU3 or NPU3 B, the remaining
half-height slot can be equipped with LTU, ETU, SAU or SXU.
Two full-height slots can be equipped with MMU, LTU or ETU.
AMM 2p B can be fitted in a standard 19" or metric rack or on a wall using a
dedicated mounting set. The height of an AMM 2p B is 1U.
3.2.1.1 Power Supply
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.
10066
NPU
+
_
+
_
Redundant Power
Supply
–48 V DC or
+24 V DC
Figure 8 Power supply for AMM 2p B
11
12/221 02-CSH 109 32/1-V1 Uen A 2008-03-14
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