Table 4-11
Pin assignment (E1 cables)
(continued)
Point on
connector
Signal name
(120 Ω, symmetrical)
Signal name
(75 Ω, coaxial)
4
RX positive (a-wire)
Braid of RX coaxial
5
RX negative (b-wire)
nc
6
nc
Inner conductor of RX coaxial
7
GD
GD
8
GD
GD
Cable data (120 Ω, symmetrical)
Preferably shielded twisted pair cables should be used (22 or 26 AWG).
Cable data (75 Ω, coaxial)
Preferably MiniCoax 75 Ω, 2.5 mm cables should be used.
Cable connection
Please connect the E1 cables as shown in the figure below:
Braid of Tx-coaxial
Inner conductor of Tx-coaxial
Braid of Rx-coaxial
Inner conductor of Rx-coaxial
GND
GND
Tinned copper braid
Stranded wire AWG 26
Figure 4-23 E1 cables
System cabling
Option card cable installation
E1 interfaces (Main board/X16E1-V3 card)
...................................................................................................................................................................................................................................
...................................................................................................................................................................................................................................
365-313-103R8.0
Issue 2
July 2009
Alcatel-Lucent – Internal
Proprietary – Use pursuant to Company instruction
4-23