User's Manual

User Guide

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User Guide, WherePort IV D1300 REV A

Figure 82 WherePort IV in a Doorway

To enter the room, an object must pass through the guaranteed capture range of the WherePort IV.

The placement of a WherePort IV in the doorway might seem simple. Figure 82 shows this installation.

Any tagged asset passing through the doorway must pass through the guaranteed capture range.

However, an object passing down the corridor would also be pinged by the WherePort IV. If the

WherePort IV is mounted to the top of the doorway, it might be below a space on the floor above that is

part of the application as well. The WherePort IV field might extend far enough into the second floor to

ping a WhereTag moving through a completely separate part of the facility.

The WherePort IV may need to be mounted inside the room to prevent pinging traffic along the corridor.

Its power level may need to reduced so that the range does not extend beyond the actual portal. The

placement of the tag on the asset may need to be adjusted, perhaps by placing it closer to top of a vehicle,

so that only the portal WherePort IV will ping it.

When an area is monitored using portals, all portals must be covered. If a path into the area is not

covered by a WherePort IV, tagged assets may enter or leave through the uncovered path.

Corridor

Functional Area