Wavetronix VDR24 Radar - Manual (Page 24)

Introduction and Overview
24 VDR24 Radar Detection System, Rev 1.0
2.3.5.1. Radar Sensor Mounting Brackets
Island Radar provides several different types of mounting
brackets for positioning the radar sensors at the right height
and location above the crossing.
2.3.5.1.1. Elevated Mounting Brackets (MNT-0101-00)
The optimum vertical height for the radar sensors is between
18 and 22 feet. The most convenient location to mount the
devices is atop the exit or entrance gate masts, which are
typically a maximum of 15 feet in height. The primary mounting
fixture for most applications, the Elevated Mounting Bracket
provides an additional 48 inches of elevation and provides a
universal joint sensor mounting mechanism to properly position
the radar sensor above, to the side, and just within Minimum
Track Clearance Distance Zone (MTCD) of the crossing island.
2.3.5.1.2. Standard Mounting Brackets (MNT-0100-00)
The standard mounting bracket is intended for use on poles
that are already between 18-22 feet in height and therefore do
not require additional elevation. The standard mounting
bracket positions the radar sensors 12 inches (horizontally)
into the crossing area.
2.3.5.1.3. Extended Mounting Brackets (MNT-0102-00)
The extended mounting bracket is intended for use on poles
that are already between 18-22 feet in height but require
additional horizontal extension for positioning the radar
sensors (horizontally) into the crossing area.
2.3.5.2. Mast Riser Cable
To separate the longer Home Run
Cable from the connection that is made
to the radar sensor at the top of the
mast, a shorter Mast Riser Cable is
provided. At the sensor end of this
cable is a preassembled, weatherproof,
avionics-class plug that is latched into
the sensor connector. At the mast base
this cable is connected to a transitional
interface in the Mast Base Junction Box
where it is connected to the Home Run
Cable for connection to the VDR24 in or
near the crossing equipment bungalow.
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