Site survey
Page 30 OmniTrax Product Guide
Measurements
The site survey should include a reference scale. Take accurate measurements along the
perimeter. Include the type, size, spacing, and location of fences, buildings, roads, paths and any
other obstructions on the proposed cable route. Measure the full length of both cable paths (TX
and RX) around the perimeter. Record these measurements on the site survey.
Weather conditions
Major seasonal changes in weather can affect system performance. You should be aware of the
seasonal patterns in the region. Note such details as temperature range, hot sunny periods,
periods when the ground is frozen and thaws, and average monthly precipitation.
Snow coverage
Snow coverage does not affect the detection field. However, deep well-compacted snow with an
icy crust may provide an opportunity for an intruder to bridge the detection zone. Deep and drifting
snow can also obscure visual assessment.
Lightning protection
The OmniTrax processor includes built-in lightning protection on its inputs and outputs as well as
on the sensor cable inputs. Additional external lightning protection is available for both copper data
lines and the sensor cable inputs. Senstar recommends using additional lightning protection
devices on copper data lines and the sensor cable inputs for sites that experience thunderstorms
and lightning.
Water table
OmniTrax sensor cable must be installed above the water table. If the soil at the cable burial depth
is consistently waterlogged, reduce the burial depth of the sensor cable accordingly. If the ground
is regularly saturated up to the surface, follow the directions for Above ground berm installation
using geotextile fabric.
Completing the site survey
Review the site drawings and tour the site to verify the accuracy of the site survey and
measurements. Walk along the proposed cable path, adding any relevant information about the
installation mediums, obstacles, and surface grading. Use the site analysis checklist as a guide to
ensure that all applicable areas have been reviewed.
Note Always perform sensor verification tests following major seasonal
changes in the weather, and recalibrate the processor if required.
Note Contact Senstar Customer Service for assistance when planning an
OmniTrax installation.
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