User's Manual

1027144–0001 Draft – Revision D.01
Installing ODUs 6–19
RT installation
You must use a mechanical attenuator, shown in figure 6-17, if:
The RT is within 328 feet to 1,312 feet (100 to 400 meters)
of the HT.
The RT pointing voltage, obtained from a voltmeter,
exceeds 4.1 volts.
The installation work order instructs you to use it.
Figure 6-17 Mechanical attenuator
rt006
WARNING
To avoid the risk of electric shock and
exposure to potentially harmful radio
frequency (RF) waves, make sure the IDU is
turned off, if already installed, before
installing the mechanical attenuator.
Failure to observe these warnings could
result in personal injury.
Use the attenuator size (in decibels) specified in the installation
work order and/or Site Data Record.
Follow these steps to install the mechanical attenuator:
1. Locate the circular waveguide on the rear of the antenna.
See figure 6-18.
2. Insert the mechanical attenuator in the circular waveguide,
as shown in figure 6-18.
6.10
Installing the
mechanical
attenuator