Huawei BTS3900C Hardware Description page 162

BTS3900C (Ver.C)
Hardware Description
One end of the E1 cable is a DB26 male connector. The connector at the other end of the cable
is prepared on site based on site requirements.
Figure 7-25 E1/T1 signal cable
(1) DB26 male connector
Table 7-26
Table 7-26 Different types of 75 ohm E1 coaxial cables
Cable
75 ohm E1 coaxial cable
Pin Assignment
Table
cable.
Table 7-27 Pin assignment for the wires of the 75-ohm E1 coaxial cable
Pin on the DB26
Male Connector
X1.1
X1.2
X1.3
X1.4
Issue 03 (2013-05-27)
lists different types of 75 ohm E1 coaxial cables.
7-27, Table 7-28, and Table 7-29
Type
Tip
Ring
Tip
Ring
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 7-25
One End
DB26 male connector
describe the pin assignment for the wires of the E1/T1
(1) Coaxial Unit No.
1
3
7 BTS3900C Cables
shows an E1/T1 cable.
The Other End
L9 male connector
L9 female connector
SMB female connector
BNC male connector
SMZ male connector
SMZ female connector
Wire Label
RX1+
RX1-
RX2+
RX2-
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