Thuraya IP Voyager - Manual (Page 11)

• Package materials 11
Power port
The power port is the connection from the power supply (vehicle battery or some other
12 or 24Vdc power source) to the BDU. The power cable has a positive DC power line,
a Remote Switch line and a negative DC power line.
Line type Pin number
V+ DC power line 1
Remote Switch 2
V- DC power line 3
Table 2. Power port pin out
Four RJ-45 Ethernet with Power over Ethernet (PoE) ports
There are four RJ-45 ports with Power over Ethernet (PoE) on the BDU. The ports
supply standard PoE according to the IEEE 802.3af standard and 10/100BaseT
Ethernet. The pinout of the ports supports a direct straight-through connection to a PC
with a standard Ethernet cable. Table 3 shows the pinout of the Ethernet connector.
Pin
1 RX+
2 RX-
3 TX+
4 NC
5 NC
6 TX-
7 NC
8 NC
Table 3. RJ-45 Ethernet port pinout
Note: The +48V and -48V are supplied over the TX, RX pairs.
They are only active when an 802.3af compliant device is
plugged in. The other pairs (4, 5, 7, and 8) are unused.
The total power supplied by the PoE is limited to 30W maximum for 12V installations
and 60W maximum for 24V installations. The BDU automatically detects the class of
the device plugged in and will apply power so that the total cannot exceed these limits.
If the user attempts to connect a combination of devices that require more than this,
the BDU will not power any devices that would cause the limit to be exceeded.
Note: Class 4 (802.3at) PD devices are not supported.