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TPM
SPC-3000 User Manual
69
6.6.5. PoE Power Ethernet
Figure 6-23: Analog Output
Power over Ethernet or PoE, is the technology used for power transmission in network equipment, via network
UTP cable, together with data. PoE is useful in situations when we want to connect network devices that are
far away from a power source. In this situation we take advantage of the Ethernet cable, because there are 4
pairs of wires, but for the majority of networks, only 2 pairs are used for data transmission. PoE uses 2 unused
twisted pairs, for electrical transmission needed to power the device.
Pin No.
10/100 Mbps
1000 Mbps
1
E_TX+
MDI0_P
2
E_TX-
MDI0_N
3
E_RX+
MDI1_P
4
---
MDI2_P
5
---
MDI2_N
6
E_RX-
MDI1_N
7
---
MDI3_P
8
---
MDI3_N
Figure 6-24: Analog Output