4.4.3 Technical Specifications
Table 4-8 lists the technical specifications of the AUX interface cable.
Table 4-8 Technical specifications of the AUX interface cable
Item Description
Connector X1 Network interface connector-crystal connector-8PIN-8bit-shielded plug
Connector X2 Cable connector-D type-25PIN-female
Connector X3 Cable connector-D type-9PIN-female
Cable type Symmetrical twisted cable-120-ohm-SEYVPV-0.5mm-24AWG-8core-
PANTONE 430U
Symmetrical twisted cable-100-ohm-SEYVP-0.48mm-26AWG-8core-
black
Number of cores 8
Fireproof class CM
Available
length
15 m ( 49.21 ft ) for the 120-ohm cable
3 m ( 9.84 ft ) for the 100-ohm cable
4.5 Clock Cable
This section describes the structure and technical specifications of the clock cable.
4.5.1 Introduction
Clock cable for the 1588v2-supporting MPU
A clock cable is used to connect the clock interface on the NE40E to the clock interface on
another device. In this manner, the NE40E can receive 2-Mbit/s clock signals, 2-MHz clock
signals, 1 PPS +ASCII time signals, or two channels of DCLS time signals from the upstream
device and provides 2-Mbit/s clock signals, 2-MHz clock signals, 1 PPS +ASCII time signals,
or two channels of DCLS time signals to the downstream device.
One end of the clock cable is an RJ45 connector connected to the clock interface on the MPU
and the other end is connected to the clock interface on an external device. The connector on
the other end needs to be prepared as required on site.
An RJ45 connector is used together with the 120-ohm trunk cable.
NOTE
The wire sequence of a trunk cable used as a clock cable differs from the wire sequence of an ordinary
twisted cable.
4.5.2 Structure
HUAWEI NE40E-X1 & NE40E-X2 Universal Service
Router
Hardware Description 4 Cables
Issue 02 (2011-09-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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