User's Manual

ES2440 Hardware Guide
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IMPORTANT SAFETY INFORMATION
The ES2440 is an outdoor device. It should be powered by a mid-span PoE (Power over Ethernet)
injector obtained from Fortress Technologies over a weatherized Ethernet cable OR by a DC
power adapter/supply obtained from Fortress Technologies over a weatherized DC power cable.
Either power source, mid-span PoE injector or DC power supply, and the power cord and AC
supply it plugs into should remain indoors, protected from the weather. The connection between
the ES2440 and its indoor power source/connectors must be made using a weatherized cable
(Ethernet or DC power). In this way, power can be safely provided to the outdoor ES2440 while the
power source/connectors remain protected indoors, as shown:
IMPORTANT FCC INFORMATION
The Federal Communications Commission has released Office of Engineering and Technology
Laboratory Division Knowledge Database (KDB) 44399, which refines the definition of Dynamic
Frequency Selection (DFS) support. Since this device has the ability to use frequencies covered
by DFS, KDB 443999 must be followed. It is published in full on the FCC web site:
https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41732
In order to support FCC KDB 443999, Fortress has limited the use of certain frequencies within
the 5400–5725 MHz range. Specifically, the frequencies defined by the FCC as being of primary
interest are those in the 5600–5650 MHz range, which correspond to 802.11a channels 120, 124,
and 128. In order to comply with the KDB 443999, these channels have been removed from use,
or notched. Notched channels are unavailable for use on this device.
KDB 44399 provides additional restrictions on the use of channels within 30 MHz of notched
channels when the device is within 35 km of a Terminal Doppler Weather Radar (TDWR)
installation. Affected channels 116, 132, and 136 serve as a guard of 30 MHz around the critical
notched frequencies. Guard frequencies are unavailable for use on this device by default. The
FCC allows these channels to be used, however, as long as the device is not within 35 km of a
TDWR installation, as described in this excerpt of KDB 443999:
Any installation of either a master or a client device within 35 km of a TDWR location shall
be separated by at least 30 MHz (center-to-center) from the TDWR operating frequency.
In some instances it is possible that a device may be within 35 km of multiple TDWRs. In
this case the device must ensure that it avoids operation within 30 MHz for each of the
ES2440
weatherized Ethernet
-or-DC power cable
PoE mid-span injector
-or-DC power supply
Ethernet
(if used)
AC wall
outlet