User's Manual

6 APCD-LM048-1.3
1: Introduction
Figure 2 EUM3006 Longitudinal and Transverse Axes
The antenna patterns are longitudinal and transverse polarization. If the modem is mounted
vertically, then the longitudinal polarization coincides with vertical polarization and the
transverse is for horizontal polarization. If the modem in mounted horizontally, then the
longitudinal axis is for horizontal polarization and the transverse is for vertical polarization. See
the installation section for suggestions on mounting orientation.
The EUM3006 samples the signal strength from both antenna polarizations during the
preamble of every received packet and automatically selects the best signal. When the
EUM3006 transmits, it sends on the antenna polarization that was last used to receive a
signal.
The integrated antenna has a front-to-back ratio of more than 15 dB, which helps to suppress
interference.
1.3.3 Ethernet Port
The EUM3006 has a weatherproof 10BaseT Ethernet RJ-45 connector. This makes
installation easy and robust, since the correct length of standard outdoor Ethernet cable can
be connected and made weatherproof with the mating connector provided.
The outdoor Ethernet cable can be plugged into the PoE Injector directly or through extension
cables and a UL-approved PoE Lightning Arrestor (recommended, may be required by local
and national codes). Details on the Ethernet port are found in Appendix B on page 39.
Vertical
Horizontal
Modem Vertically Mounted
Modem Horizontally Mounted
Longitudinal Axis
Transverse
Axis
Longitudinal Axis
Transverse
Axis