User's Manual Part 2b

Hardware Installation Guide Installing the BSDU
02030311-05 Airspan Networks Ltd. 5-23
5.12.2. Connecting to Power Supply (BSPS)
The connection between the BSDU and the power supply unit (BSPS) is made via a
two-meter long DC shielded power cable (supplied). The power cable has a power
connector at each end of the cable and a wire for preventing cable disturbances and
radiation. The power cable is connected to the BSDU’s power connector.
The wire color-coding is as follows:
! Red: positive
! Black: negative
Figure 5-12 displays the power cable with the power connectors on each side and the
grounding lug wire on the side that connects to the BSDU.
Figure 5-12: Power cable (with ground wire) for connecting BSDU to BSPS
To connect the BSDU to the power supply unit (see Figure 5-13):
1. Connect the cable’s power connectors on the cable side that provides an
additional wire for preventing power radiation, to the BSDU’s power port
labeled POWER -48 VDC. Ensure that the black-colored (i.e., negative) side of
the connector is inserted in the upper part of the power receptacle; and the red-
colored (i.e., positive) side of the connector is inserted in the lower part of the
power receptacle (see Figure 5-13).
2. Connect the grounding lug wire for radiation immunity, to the BSDU’s
grounding lug screw, located alongside the BSDU’s power receptacle (see
Figure).
Grounding lug wire
Power connectors
for BSDU
Power connectors
for BSPS