Huawei BBU3900 V300 Installation Manual page 53

Appendix
b
Pin Assignment for the BBU Signal Cables
75-ohm E1 cable
Pin of the DB26 Male Connector
X1.1
X1.2
X1.3
X1.4
X1.5
X1.6
X1.7
X1.8
X1.19
X1.20
X1.21
X1.22
X1.23
X1.24
X1.25
X1.26
Wire Type Coaxial Series No.
Tip 1
Ring
Tip 3
Ring
Tip 5
Ring
Tip 7
Ring
Tip 2
Ring
Tip 4
Ring
Tip 6
Ring
Tip 8
Ring
52
Label
RX1+
RX1-
RX2+
RX2-
RX3+
RX3-
RX4+
RX4-
TX1+
TX1-
TX2+
TX2-
TX3+
TX3-
TX4+
TX4-