RLX2-IHx Series ♦ 802.11a, b, g, n
Appendix B - Radio Hardware
Industrial Hotspots
User Manual
ProSoft Technology, Inc.
Page 199 of 248
Using Power over Ethernet (PoE) to power remote devices has several advantages:
"Carrier Class" Power Over Ethernet system.
Power can be supplied over long distances, up to 300 feet.
Power can be available wherever network access is available.
The power supply can be centrally located where it can be attached to an un-
interruptible power supply.
You can easily power or reset the attached equipment from a remote location.
There is no need to run additional power cabling to the device as power can be
supplied over the CAT5, CAT5E, or CAT6 Ethernet cable.
You can save on the cost of coax cable and reduce RF losses for remote mounted
radios.
Built-in Ethernet surge protection to prevent equipment damage.
Overload and short circuit protection.
8.3
Ethernet Cable Specifications
The recommended cable is Category 5 or better. A Category 5 cable has four twisted
pairs of wires, which are color-coded and cannot be swapped. The module uses only
two of the four pairs when running at 10 MBit or 100 MBit speeds. All eight wires are
used when running at 1000 MBit speeds.
Category 5e or better cable is recommended for 1000 MBit speeds.
The Ethernet port on the module is Auto-Sensing. Use either a standard Ethernet
straight-through cable or a crossover cable when connecting the module to an
Ethernet hub, a 10/100/1000 Base-T Ethernet switch, or directly to a PC. The module
detects the cable type and uses the appropriate pins to send and receive Ethernet
signals.
Ethernet cabling is similar to U.S. telephone cables, except that it has eight
conductors. Some hubs have one input that can accept either a straight-through or
crossover cable, depending on a switch position. In this case, ensure the switch
position and cable type agree.
Refer to Ethernet Cable Configuration (page 199) for a diagram of how to configure
Ethernet cables.