User's Manual Part 1

3: Detailed Description
APCD-LM043-8.0 (DRAFT C) 17
comes from the CCU, the EUM samples the signal strength often—typically faster than once
every 5 ms.
The end user must position the switched-beam diversity antenna correctly to receive an
adequate signal level. The Radio LED on the EUM, described in Indicators and Connectors on
page 88, can be used to help with the alignment. Since the switched-beam diversity antenna
has a good front-to-back ratio, it can be positioned to suppress interference from other
wireless devices at the end-user’s premises.
Other WaveRider-approved antennas can be used at EUM locations that require outdoor
antennas. A professional installer is required to install outdoor EUM antennas to ensure the
antenna system is properly installed with lightning protection and consistent with FCC and
Industry Canada guidelines, which are outlined in Appendix F on page 229.
Transmission Line
If the WaveRider diversity antenna is used, it comes equipped with RF cables and connectors.
The connector is a proprietary WaveRider connector, which is mandated by the FCC
requirement that the connectors used in ISM band products that are not professionally
installed must be unique, or at least not readily available. If an alternate indoor or outdoor
antenna is used, the installer must obtain an RF jumper cable to connect the antenna cable to
the EUM. These jumper cables can be obtained from WaveRider.
Lightning Arrestor
A lightning arrestor is required at the EUM only if an outdoor antenna is used.
Ethernet Port
The EUM has one 10BaseT Ethernet port.
Any DC voltage applied to the Ethernet port may damage the EUM, the Ethernet
cable, and/or network gear. The EUM is not
a Power-over-Ethernet device.