Huawei BBU3900 Installation Manual page 12

Installing the BBU in the APM30
b
Installing the BBU Cables
8. Install the EMUA monitoring signal cable. (The EMUA is configured if
there are external dry contacts or analog detection is required.)
8.1. If the MON0 port on the BBU is available, fix the RJ45 connector of the EMUA
monitoring signal cable to the MON0 port on the UPEU and the DB9 connector to the
corresponding port on the EMUA.
8.2. If the MON0 port on the BBU is unavailable, cut off the RJ45 connector of the EMUA
monitoring signal cable, and then connect the four exposed wires to the RX+, RX-, TX+,
and TX- ports on the APMI. For the pin assignment, see Page 38 EMUA monitoring
signal cable. Fix the DB9 connector to the corresponding port on the EMUA.
MON 0
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