User's Manual

pulsAR radio Operator’s Manual
1-5
1.4 Radio Power
The pulsAR radio complies with the IEEE 802.3af Power over Ethernet (PoE) standard when power
is applied over the data line pairs (pins 1-2 and 3-6). You typically can connect the radio directly to a
PoE port of an Ethernet switch or router and it will provide power to the radio.
Alternatively the radio may also be powered over the spare cat5 line pairs (pins 4-5 and 7-8). On
these lines the radio accepts DC voltage over a very wide range (10 VDC to 58 VDC), allowing it to
easily be powered by a 12 V battery. This method is not in compliance with the IEEE 802.3af mode
B which restricts the voltage range to 48 VDC..
Afar provides two Power Inserter devices (figure 1.2) that use this second method. One is for
operation from an AC source (110-240 VAC), and the other for operation from a DC source (10 to 58
VDC).
The AC Power Inserter Unit includes a power supply for connection to an AC outlet (110-240 VAC),
two RJ45 connectors and a bi-color LED. The two RJ-45 connectors are labeled “To LAN” and “To
Radio”.
The DC Power Inserter Unit has two RJ45 connectors labeled “Data In”, “P+Data Out”, a green LED,
and a 10 ft pigtail cable for connection to your DC supply voltage or the DC/DC converter.
Figure 1.2 – AC and DC Power Inserter Units