H3C Technologies H3C MSR 50 - Manual (Page 33)

2-13
Figure 2-11 E1 G.703 75-ohm unbalanced coaxial cable
The 75-ohm unbalanced coaxial cable connects SIC-1E1-F with the DB-15 connector and the network
end with the BNC connector.
The SIC-1E1-F supports 75-ohm unbalanced coaxial cables only.
Connecting the interface cable
When using E1 cable outdoors, you are recommended to install a special lightning arrester on the input
end of the cable in order to avoid lightning more effectively.
If the SIC has been properly installed, follow these steps to connect the cable:
Step1 Connect the DB-15 connector of E1 cable to SIC-1E1-F;
Step2 Connect the other end of the E1 cable to the corresponding network device:
z
Connect the BNC connector of the cable to the remote equipment if there is no need for extension,
or
z
Connect the BNC connector of the cable to the coaxial connector and the other end of the coaxial
connector to the remote network equipment through a 75-ohm E1 trunk cable, if cable extension is
needed.
The wire marked TX in the E1 cable should be connected to the peer wire marked RX and the wire
marked RX should be connected to the peer wire marked TX.