User's Manual

User Guide

WherePort III User Guide D948 Rev B

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A large doorway may require three WherePorts to reliably detect the passage of a tagged

asset through it. In the example shown in Figure 27 coverage requires a WherePort on

each side of the doorway and on the ceiling. Again each WherePort must be phased

accordingly.

Figure 28 Loading Dock Door Options

Viewed from the side.

Loading dock doors are frequently too close together for each of them to be monitored by

a different WherePort. If unique identification of passage through a given door is

required, a more complex solution will be required.

Figure 28 and Figure 29 show two ways of solving the problem. The example in

Figure 28 uses a WherePort to cover two doors. Since these WherePorts are mounted in

different orientation on the walls, their phases must be set as well. Figure 29 shows a

WherePort mounted above each door. The phases for these ports can all be set to 0 but

they must still be phased together with one of the ports identified as the master.

The orientation of the tags will also affect the location of the WherePorts. If the

tag orientation is horizontal, then the top solution is best so that the WherePort field will

be maximized. If the tags are oriented vertically, then the lower solution, with the

WherePorts mounted over the doors, will be best.

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