Hughes 9300 Series Installation Guide
The IDU is equipped with the following ports:
Power Port
The power port is the connection from the power supply (vehicle battery or some other
12 or 24 VDC power source) to the IDU. The power cable has a +V power line, an
ignition sense line, and a –V power line.
Line Type
Pin Number
+V Power Line
1
Ignition Sense
2
-V Power Line
3
Figure 3 – Power Port Pinout
Ethernet Port
RJ 45 Ethernet Port with Power over Ethernet (PoE)
There is one RJ45 port with Power over Ethernet (PoE) on the IDU. The port supplies
standard PoE according to the IEEE 802.3af standard (48 VDC up to 15.4 W) and
10BaseT Ethernet. The pin out of the port supports a direct straight-through connection to
a PC with a standard Ethernet cable. The PC will be supplied with a dynamic local IP
address using a standard DHCP exchange. Figure 4 shows the pinout of the Ethernet
connector.
Pin
1 RX+
2 RX-
3 TX+
4 +48V
5 +48V
6 TX-
7 -48V
8 -48V
Figure 4 – Ethernet Port Pinout
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