75-Ohm DB9-to-BNC Cable (Dedicated for E1)
Description
A 75-ohm DB9-to-BNC cable is applicable to the card models listed in Table 8-25.
Structure and Pin Assignments
DB9 |
BNC |
|||
|---|---|---|---|---|
Pin |
Signal |
Label |
Pin |
Signal |
1 |
Rx + |
R |
Core wire |
Rx |
2 |
Rx - |
Insulated wire |
GND |
|
6 |
Tx + |
T |
Core wire |
Tx |
7 |
Tx - |
Insulated wire |
GND |
|
- Tx stands for transmission, and Rx stands for receiving.
- The R and T tags on BNC coaxial cables indicate the signal directions on a router. The R and T BNC coaxial cables must be connected to the Tx and Rx interfaces on the remote device.
Trunk Extension Cable
A 75-ohm DB9-to-BNC cable is 3 m long by default. If the default length is not enough for cable connection, you can use a 75-ohm trunk extension cable as an extension cable.
When using a 75-ohm trunk extension cable to prolong a 75-ohm DB9-to-BNC cable, connect one BNC connector of the trunk cable to a coaxial connector and the other BNC connector to the remote device, as shown in Figure 8-17.
Connection
A 75-ohm DB9-to-BNC cable is connected as follows:
- The DB9 connector is connected to a router.
- The BNC connectors at the other end are connected to a network device.
Ordering Information
If 75-ohm DB9-to-BNC cables need to be prolonged, configure two RF coaxial connectors and two 75-ohm trunk extension cables for each 75-ohm DB9-to-BNC cable.
Table 8-27 provides the 75-ohm DB9-to-BNC cable ordering information.
Part Number |
Description |
Remarks |
|---|---|---|
04120275 |
Trunk Cable, 3m, 75ohm, 1E1, 2.2mm, D9M, SYFVZP75-1.2/0.25*4(S), 2*BNC75SM-V, For AR |
Optional |
04024299 |
Trunk Extension Cable, 15.00m, 75ohm, 2.2mm, BNC75AM-II, SYFVZ75-1.2/0.25, BNC75AM-II, C&C08A, DL3445 |
Optional |
14040202 |
Coaxial Connector, BNC, 75ohm, Straight/Socket, Dual, Female, Connected With E1 Cable BNC Male Plug |
Optional |