Considering that you may customize cables, the following section describes connection modes and the signal.
Table 1-19 Signals of the DB9 Male to RJ-45 Plug Cable
DB9M
RJ-45 Plug
Signal
1
5
RX Ring
2
4
RX Tip
4
1
TX Tip
5
2
TX Ring
Balanced cable with the RJ-45 jack
One end is the DB9 male connector, and the other end is the RJ-45 jack. The characteristic impedance of the cable is
120Ω.
Figure 1-24: Balanced cable with the RJ-45 jack
Considering that you may customize cables, the following section describes connection modes and the signal.
Table 1-20 Signals of the DB9 Male to RJ-45 Jack Cable
DB9M
RJ-45 Jack
Signal
1
2
RX Ring
2
1
RX Tip
4
4
TX Tip
5
5
TX Ring
Non-balanced cable
One end is the DB9 male connector, and the other end is attached with two male BNC connectors. The characteristic
impedance of the cable is 75Ω
Figure 1-25: Non-balanced cable
