Operating instructions

Installation 5-3
Pedestal Installation
Pedestal installation is similar to the aerial installation with the exception of temperature and
mounting procedure. In an aerial installation, the cable and amplifier are subject to the same
temperature. In contrast, pedestal installation provides a stable temperature environment for
the buried cable while subjecting the elevated amplifier to higher temperatures. The
VADU/VQADU, if installed, functions the same as in an aerial installation and does not require
further attention. See Section 3, “Amplifier Setup,” Amplifier Level Control for additional
information.
To mount the MBV3-100* on a pedestal:
1 Remove two 5/16-inch messenger clamp bolts located on the long sides of the MBV3-100*
housing.
2 Locate the two 5/16-inch holes 7.7 inches center-to-center cast in the housing base.
3 Use the two 5/16-inch bolts to install the MBV3-100* to the pre-drilled pedestal mounting
plate and torque to 10 to 12 ft-lbs.
Grounding
For aerial or pedestal installations, the MBV3-100* housing requires a good earth ground to
function properly.
For aerial metal-strand installations, the metal strand clamp normally provides adequate
grounding. However, if additional grounding is needed, you may attach a wire from earth
ground to a 5/16 × 24 bolt that is tightly secured to one of the pedestal mounting holes on the
bottom of the housing base.
For pedestal installations, the MBV3-100* should be adequately grounded by routine mounting
to the pedestal. However, if additional grounding is needed, attach a ground wire to a 5/16 × 24
bolt and tighten it into one of the strand clamp holes (Figures 2-4 and 2-6).
MBV3-100* Installation and Operation Manual