4000 Router Series Interface Module Guide

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Figure 137 Connect an E1 75-ohm cable

• If you want to extend the cable, connect each BNC connector of the E1 75-ohm cable to one end

of a coaxial connector, and connect the remote device to the other end of the coaxial connector

through an E1 75-ohm trunk cable.

Figure 138 Connect an E1 75-ohm cable

• If the impedance of the E1 interface on the remote device is 120 ohms, you must use an impedance

converter to adapt the impedance.

Figure 139 Connect an impedance converter

Connecting a 4-port E1 75-ohm cable (D25 <----> D15)

1. Connect the D25 connector of the 4-port E1 75-ohm cable to the D25 interface of the interface

module and fasten the bolts to fix the cable.

……

Coaxial connector

1/2/4/8-port E1 75-ohm cable

E1 / E1-F

(75ohm)

Device

(75ohm E1 Port)

75-ohm adapter cable

……