RAD-Galaxy User’s Guide
25
© 2016 Intrepid Control Systems, Inc.
Version 1.2 - November 28, 2017
Automotive Ethernet (100BASE-T1 / BroadR-Reach) Cable Assemblies
Specific cables for Automotive Ethernet are not included with the RAD-Galaxy for two reasons.
First, Automotive Ethernet does not specify an industry-standard cable and connector type.
Second, termination and connector requirements vary from one application to another, so it
makes sense for each company to create the cables/harnesses needed for its own networks.
To support its 12 100BASE-T1 connections, the RAD-Galaxy uses a pair of 20-pin Nano MQS
style connector sets made by TE Connectivity, which are designed for vehicle use. The part
number of the male connector within the RAD-Galaxy is 2177367-3, while the matching female
plugs (supplied) are TE Connectivity part number 2177588-1. The crimp contacts that fit into
the plugs are TE part number 2-2112449-1; 28 of these are provided with the RAD-Galaxy (the
24 required for the 12 channels, plus 4 spares).
You will need to create two cable assemblies for the 100BASE-T1 connections using the
supplied plugs and contacts. To secure the contacts within the plug, you will need a special
Nano MQS crimping tool, TE Connectivity part number 4-1579014-0. This device can be
purchased from various electronic component suppliers or directly from Intrepid Control
Systems. Each of the two cable assemblies will have 12 connections for 6 AE channels,
with the contacts arranged according to the pinout on the bottom of the RAD-Galaxy. This
information is also provided for your convenience in Chapter 6. An example of an assembled
Nano MQS plug with attached cables can be seen in Figure 18.
The other ends of the 12 wires coming from each of the Nano MQS plugs should be terminated
according to the needs of your vehicle network or bench application.
Be sure to label each of the wires and/or termination connectors with the appropriate RAD-
Galaxy 100BASE-T1 channel number. This will allow you to easily link the connectors to the
correct devices in your network.