Installation Position
One end of the PGND cable is connected to the grounding bolt on the RRU3804, and the other
end is connected to the nearest grounding bar.
2.3.2 Power Cable of the RRU3804
The RRU3804 uses a shielded –48 V DC power cable. The cable feeds external –48 V DC power
to the RRU3804.
Appearance
One end of the cable is two OT terminals, and the other end is bare, as shown in Figure 2-8.
The OT terminals need to be made on site.
Figure 2-8 –48 V DC power cable
Pin Assignment
The –48 V DC cable is a 2-wire cable. Table 2-14 and Table 2-15 describe the pin assignment
for the wires of the –48 V DC power cable.
Table 2-14 Pin assignment for the wires of the –48 V DC power cable (North American
Standard)
Wire Type
Wire Color
NEG Blue
RTN Black
Table 2-15 Pin assignment for the wires of the –48 V DC power cable (European Standard)
Wire Type
Wire Color
NEG Blue
RTN Brown
Installation Position
At one end of the cable, the OT terminal on the blue wire is connected to the NEG(-) port on the
cabling cavity of the RRU3804, and the OT terminal on the black or brown wire is connected
to the RTN(+) port on the cabling cavity of the RRU3804.
RRU3804
User Guide 2 RRU3804 and SRXU Hardware
Issue 01 (2007-11-29) Huawei Technologies Proprietary 2-17
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