Installation Prerequisites and Considerations
Access Point Deployment Guide
20
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AP DC Power Requirement
The AP is powered over the Ethernet port using a PoE injector. The acceptable power source
voltage range is 38 – 72 VDC. At the nominal input voltage of 48 VDC the typical input current
is 0.3 Amps. The maximum input power dissipation is 17 Watts. When connecting to the
distribution panel of a 48 VDC power system, it should be fused with a minimum of a ½ Amp
slow-blow fuse. The maximum fuse or circuit breaker size should be 2 Amps.
PoE Injector
A standard PoE (Power over Ethernet) injector is used to apply power to the AP. An example of
an approved device is the L-com HyperLink BT-CAT5-P1 Single-Port CAT-5 Midspan/Injector
(also known as PoE Passive Splitter). When connected to an outdoor AP the PoE injector must
be properly grounded for lightning and surge protection.
The following figure illustrates a typical setup utilizing the PoE injector.
Figure 6.
Block Diagram Showing PoE Injector Connections
Ethernet Cable
The Ethernet cable connection to the AP provides both data and DC power. The maximum
Ethernet cable length is 328 feet (100 meters). A quality Cat5e or Cat6 cable is required. For
most applications, an Unshielded Twisted Pair (UTP) cable with solid conductors is
recommended.
Note:
Shielded Ethernet cable is not recommended.
The following table provides a list of tested Ethernet cables and connector combinations.
Table 5.
Tested Ethernet Cable and Connector Combinations
Cable Type
Manufacturer Part
Number
RJ45 Connector Type
Manufacturer Part
Number
CAT 5E, UTP Stranded,
24AWG Cable
10X6-021SH
CAT 5E UTP RJ45
Connectors, for Stranded
Cable
SW-22342
