RAD-Galaxy User’s Guide
6
© 2016 Intrepid Control Systems, Inc.
Version 1.2 - November 28, 2017
Odd Nodes to
Even Nodes
PC to
Odd Nodes
PC to
Even Nodes
AE
Node 2
AE
Node 4
AE
Node 12
PC
RAD-Galaxy
Tapped
from
Even
Nodes
Tapped
from
Odd
Nodes
Even Nodes
to Odd Nodes
...
...
...
AE
Node 1
AE
Node 3
AE
Node 11
AE
5
AE
7
AE
9
AE
8
AE
6
AE
10
Figure 3: Using the RAD-Galaxy as an Active Tap Between AE Node Pairs.
In this application, 12 nodes were formerly
connected to each other in pairs: Node 1 to Node 2, Node 3 to Node 4, and so on. The RAD-Galaxy has been inserted
between each pair, allowing the pair connections to continue in virtual fashion (gray connecting lines) while allowing all traffic
to be monitored by the PC, and additional messages from the PC to be sent to the nodes. The RAD-Galaxy connection pairs
are 1+2, 3+4, 5+8, 7+6, 9+10 and 11+12.
Operation as a Media Converter
Instead of being placed between 6 100BASE-T1 connections, the RAD-Galaxy can be
configured to interface to 12 nodes independently. Any traffic received by a node will be
converted from Automotive Ethernet to standard Ethernet and sent to the PC. Conversely,
traffic from the PC will be converted from standard Ethernet to 100BASE-T1 and sent to the
appropriate node. Since in this operating mode the RAD-Galaxy is converting between two
Ethernet media (Automotive Ethernet and Gigabit Ethernet), it is said to be acting as a
media
converter
. Figure 4 depicts the logical operation of the RAD-Galaxy when used in this manner.