User's Manual

Personnel Alert: Base Station
User Manual
Figure 18. Honeycomb Pattern
Each number represents the recommended frequency
hopping pattern for the dip switch settings. For information
refer to
Channel Hopping Patterns and Setting the Dip
Switch Addresses.
To develop a system plan, complete the following:
1. Using a site plan (scale drawing) or an AutoCAD
model, design a repeating pattern of seven
hexagonal cells in a honeycomb to determine the
number and approximate locations of the base
stations.
The seven cell honeycomb pattern is optimum
because it allows for the re-use of “frequency
hopping pattern algorithms” within the same
system.
2. To determine the location of a base station,
consider where it will obtain optimum transmission
with surrounding badges. The final layout will not
result in a perfect honeycomb pattern. However, if
the base stations are installed within ten meters of
the layout location, required coverage will be
achieved.
3. When more than one base station is required to
adequately cover an area, use the hexagon cell
with a distance of 90 m (300 ft.) between opposite
corners. Each hexagon equals a radius of 45 m
(150 ft.). Refer to Figure 6. Base Station Broadcast
Coverage.
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