Pedestal Installation - Motorola STARLINE SERIES Installation And Operation Manual

Pedestal Installation

Pedestal installation is similar to the aerial installation with the exeception 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 ADU, 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.
Manual thermal compensation provided by the TDU can be inaccurate and result in signal level
changes with ambient temperature change. One approach to this problem is to select the least
amount of cable setting (low) on the TDU. This results in minimal gain change with
temperature. A preferred approach is to install a JXP-TH*B thermal attenuator while operating
the MB*/* in the manual mode.
To mount the MB*/* on a pedestal:
1
Remove two 5/16-inch messenger clamp bolts located on the long sides of the MB*/* housing.
2
Locate the two 5/16-inch holes 7.7 inches center-to-center cast in the lower housing.
3
Use the two 5/16-inch bolts to install the MB*/* to the pre-drilled pedestal mounting plate
and torque to 10 to 12 ft-lbs.
Installation
MB*/* Installation and Operation Manual
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