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.)
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. Fix the DB9
connector to the corresponding port on the EMUA.
EMUA monitoring signal cable
Pin on the RJ45
Connector
X1.1
X1.2
X1.4
X1.5
Pin of the DB9
Male Connector
X2.3
X2.7
X2.2
X2.6
Wire Color Wire Type
White Twisted pair
Orange Twisted pair
Blue Twisted pair
White Twisted pair
11
Port on the
APMI
TX+
TX-
RX+
RX-