Specifications

Appendix A Connection Data Installation and Operation Manual
A-4 Data Channel Connection Data FCD-E1LC Ver. 1.0
Connection Cable for Unbalanced Interface, CBL-RJ45/2BNC/E1
To connect equipment with unbalanced E1 interface to the FCD-E1LC sublink,
RAD offers a 15-cm long adapter cable, CBL-RJ45/2BNC/E1, which has one RJ-45
plug for connection to FCD-E1LC E1/T1 SUB connector and two BNC female
connectors at the other end. Cable wiring is given in
Figure A-3 .
This cable has different wiring (crossed receive and transmit pins), relative to the
cable intended for use on the FCD-E1LC main link (see Figure A-2
).
Connecting this cable to the FCD-E1LC E1/T1 SUB connector will cause the
interface to switch to the unbalanced mode.
RJ-45
BNC
Femal
e
Receiv
e
(Green)
Transmit
(Red)
1
2
3
4
5
6
7
8
Transmit
(Red BNC)
Receive
(Green BNC)
TX Ring
TX Tip
NC
RX Ring
RX Tip
NC
Cable Sense
GND
.
.
.
.
.
.
Figure A-3. Sublink Unbalanced Interface Adapter Cable, CBL-RJ45/2BNC/E1, Wiring Diagram
A.3 Data Channel Connection Data
Connector Data
Each synchronous data channel of the FCD-E1LC is terminated in a 25-pin D-type
female connector, irrespective of the channel interface type. The connector pin
assignment is given in
Table A-3 . Figure A-4 identifies the pins of the data
channel connector.
Pin 13 Pin 1
Pin 14
Pin 25
Figure A-4. Data Channel Connector, Pin Identification
Note