User's Manual

ADCP-75-347 • Issue 1 • 04/2008
Page 5
© 2008, ADC Telecommunications, Inc.
1.6 Wavelength Division Multiplexer System
The Wavelength Division Multiplexer (WDM) system is an accessory product that is used when
it is desirable or necessary to combine the forward and reverse path optical signals from one
URH system onto a single optical fiber. Each WDM system consists of a host module and a
remote module.
At the HU there is a WDM chassis that contains the WDM modules at the RU the WDM is built
into the fiber patch cord. The WDM system is available as an accessory item.
1.7 Antenna Cable Connections
The TX0/RX0 antenna cable connections are through 50-ohm N-type female connectors. The
RU includes an internal duplexer which allows a single antenna cable to carry both forward and
reverse path RF signals between the antenna and the RU. The RX1 diversity antenna cable
connections are through 50-ohm N-type female connectors.
An externally-mounted lightning surge suppressor is available as an accessory. The surge/
antenna connector on the lightning suppressor is an N-type female connector. The URH Remote
Unit must be properly grounded for the lighting surge suppressor to function properly.
1.8 Powering
The FlexWave URH is powered by 100 to 240 VAC (nominal 120 or 240 VAC), 50 to 60 Hz
power. The AC power is supplied through a 15-foot (4.6m) three-wire power cable that is
provided with the unit. The power cable connects to a mini 3-pin AC power connector mounted
on the bottom of the RU. The power cable is rated for indoor or outdoor use and must not be
placed within electrical conduit as this will impede the cooling of the cable during usage.
The stub end of the power cable must be routed to an external junction box (not provided) for
connection to the AC power source. A circuit breaker rated at 15 Amps (120 VAC) should be
used to provide overcurrent protection for the FlexWave URH power circuit. It is also
recommended that an external AC outlet (not provided) be installed near the FlexWave URH
RU to power test equipment and power tools.
1.9 Grounding
A grounding threaded hole (hex socket capscrew and washer provided by installer) is located on
the bottom of the unit for connecting a grounding cable to the unit. A #6 copper wire terminated
with a ring terminal must be provided to link the unit to an earth ground source.
1.10 Cooling
Passive cooling of the electronic assemblies is provided by conducting excess heat from the
internal electronic components to the aluminum enclosure. The heat is then dissipated by
Caution: For proper and safe equipment operation, an approved earth ground connection must
be provided.