
Dell PowerConnect W-AirWave 7.5 | User Guide Using VisualRF | 283
Adding Location Probability Regions
Location probability regions are optional regions that can be used to increase the accuracy of device location in
VisualRF.
VisualRF calculates device locations based on probability. VisualRF determines the probability of a device being
located in every grid cell and places the device where the probability is the highest.
Probability regions will add or remove up to 20% chance from the device location probability. They can be used to
push users into regions where they are more likely to be located, like conference rooms and cubical farms, or they
can be used to pull users out of regions where they are less likely to be like parking lots and courtyards.
To add a probability region to a floor plan, follow these steps:
1. Select the Edit menu and click the Draw Region option.
2. Outline the desired probability region. Double click or Ctrl+click to end the outline process.
3. Name the region, select a Region Type of Location Probability and select OK.
4. Move the location probability slider to the desired level, as shown on Figure 216. Very Low will decrease the
probability of a device being placed in that region by 20%. Very High will increase the probability of a device
being placed in that region by 20%.
Figure 216 Adding a New Location Probability Region
5. Optionally, you can save the location region as the exterior walls. 100% attenuation can be selected to force
VisualRF to only place devices inside of the selected region. No device will ever be placed outside of the
probability region when 100% attenuation is selected. 100% attenuation is only recommended for tall
buildings where it is extremely unlikely that any user is located outside of the building. No heat map or
attenuation grid is calculated for devices outside of the 100% attenuation region.
Adding a Wiring Closet
To add a Wiring Closet to VisualRF, follow these steps:
1. In the Edit menu, select the Draw Region option.
2. Outline the desired region. Double click or press Ctrl+click to end the outline process.
3. Name the region, select a Region Type of Wiring Closet, and select OK, as shown in Figure 217.
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