Pin Assignments - NetModule NB2500 User Manual

2.1.2

Pin Assignments

2.1.2.1 Ethernet Port
Pin: Signal: NB1310
1 TX+
2 TX-
3 RX+
4 Pair 1 for power injection 9-21VDC
5 Pair 1 for power injection 9-21VDC
6 RX-
7 Pair 2 for power injection 9-21VDC
8 Pair 2 for power injection 9-21VDC
Table 1: Pin assignment Ethernet Interface
NB1310 allows power feed through Ethernet. Power can be carried over the spare pairs (RJ45 pin
4/5 & 7/8) only. It is simplified PoE (not compliant with IEEE802.3af standard!). Power feed
through data pairs (RJ45 pins 1/2 & 3/6) is not allowed, this can destroy the device.
Required parameters of PoE power injector:
Output voltage: 18-21VDC
Polarity on spare pairs (RJ45 pin 4/5 & 7/8) can be either.
Output current: min 600mA at 18VDC
Required isolation between primary and secondary side: 1500VAC.
Estimated maximum distance from power injector to NB1310: about 15 - 30m.
User Manual NetBox Wireless Routers
26 October 2011
netbox_manual_e_v1.4.docx
Figure 1: RJ45
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