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