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10 Powering On an RRU
Figure 10-1 RRU power-on check process
(a) The normal input voltage of an RRU is -48 V DC. The voltage of the external power supply should range
from -36 V DC to -57 V DC.
(b) The RUN indicator on the RRU is on for 1s and off for 1s. The ALM indicator is steady off.
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Huawei Proprietary and Confidential
120
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