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Installation Manual – Hardware Installation
BBU3806 WCDMA Base Band Unit
Serial No.
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7.4 Power-on Check
Caution:
Before powering on BBU3806, be sure to set the "POWER" switch of BBU3806 and
the external power input switch to the "OFF" state. This ensures both equipment and
human safety.
The "POWER" switch on the panel of BBU3806 controls the power input to BBU3806.
Check the power-on state of BBU3806 as follows:
1)
Turn on the external power switch to check whether the external power supply
falls within normal voltage range below.
When the power supply to BBU3806 is at –48 V DC, the voltage shall stay
between –40 V DC to –60 V DC.
When the power supply to BBU3806 is at +24 V DC, the voltage shall stay
between 19 V DC to 29 V DC.
Labels are attached to both ends of the power cable and PGND
cable.
No power cable or PGND cable is scratched or broken.
No joint lies in the middle of the power cable and PGND cable.
No breaking device, such as switch and fuse, lies in the electric
connection of the grounding system.
The extra part of the power cable or PGND cable shall be stripped off
rather than coiled.
The lugs at both ends of the power cable or PGND cable are soldered
or crimped securely.
The bare wires and lug handles at the wiring terminals are tightly
wrapped up using insulating tapes or heat-shrink tubes.
The flat washers and spring washers are well mounted to all wiring
terminals.
The working ground, protecting ground of the NodeB, and the
lightening protection ground of the building share one group of the
grounding bodies.
If yes, go to step 2.
If not, adjust the external power supply and then repeat step 1.
Huawei Technologies Proprietary
Chapter 7 Checking Hardware Installation
Check item
7-3
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