Dell PowerConnect W-AirWave 7.6 Instrukcja Użytkownika Strona 289

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NOTE: All of these values are global variables that cannot be overridden for individual floor plans. VisualRF uses these values to
calculate path loss and client locations. Walls within VisualRF are interpreted as pure dB loss without adjusting for wall thickness.
Setting Default dB Description
Concrete Attenuation (dB) 15 Specifies the attenuation for any concrete walls drawn in VisualRF.
Cubicle Attenuation (dB) 4 Specifies the attenuation for any cubicle walls drawn in VisualRF.
Drywall Attenuation (dB) 6 Specifies the attenuation for any drywall walls drawn in VisualRF.
Glass Attenuation (dB) 6 Specifies the attenuation for any glass walls that are drawn in VisualRF.
Table 141:
Wall Attenuation Settings in VisualRF > Setup
Adding a New Attenuation
In some cases, it may be necessary to create a special attenuation setting. Click on the Add button to specify a new
wall attenuation.
Figure 201: Add a New Wall Attenuation
Update the fields as described in Table 142. Click the Add button on the form when you are finished.
Setting Description
Material Specify the type of material for the new wall.
Attenuation (0-100
dB)
Specify the attenuation decibel value.
Color Select a color for the new wall.
Table 142:
New Wall Attenuation in VisualRF > Setup
VisualRF Resource Utilization
When tuning the VisualRF server, use the default settings as recommended. If you do change any of these settings,
change one at a time and see how the system performs. Each time you restart VisualRF, you will notice a delay
before returning to normal processing. This delay can last anywhere from a minute to upwards of 30 minutes,
depending on the size of the VisualRF database.
If you use the ‘top’ command to check on VisualRF resource utilization, ensure you use the ‘1 and ‘H’ flags to show
cores and threads. Remember ‘top’ also takes 1-2 minutes to normalize and provide accurate data.
Dell PowerConnect W-AirWave 7.6 | User Guide Using VisualRF | 277
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