3com 3CRWX120695A WXR100 User Manual
Specifying the RF Characteristics of a Floor
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To use this method, perform the following tasks:
1 In 3WXM, identify the major RF obstacles and assign an attenuation value
to them. You can select any attenuation value. 3WXM will use the RF
measurement data from the site survey to correct the attenuation values.
(See “Converting Objects into RF Obstacles” on page 95 and “Drawing
RF Obstacles” on page 97.)
measurement data from the site survey to correct the attenuation values.
(See “Converting Objects into RF Obstacles” on page 95 and “Drawing
RF Obstacles” on page 97.)
3WXM also can create new obstacles based on the RF measurement
data. But adding major obstacles before you import the survey results
helps 3WXM provide a more complete set of RF obstacles.
data. But adding major obstacles before you import the survey results
helps 3WXM provide a more complete set of RF obstacles.
2 In 3WXM, indicate the positions where you will place the portable AP.
These positions are line of sight (LOS) points. You can create the LOS
points in 3WXM or import them from a comma separated values (CSV)
file. In either case, you must assign a unique MAC address to each LOS.
Even though each LOS will use the same portable AP, each position where
you use the AP must have a unique MAC address. (See “Adding LOS
Points” on page 100.)
points in 3WXM or import them from a comma separated values (CSV)
file. In either case, you must assign a unique MAC address to each LOS.
Even though each LOS will use the same portable AP, each position where
you use the AP must have a unique MAC address. (See “Adding LOS
Points” on page 100.)
You can place the LOS points at the places where you are thinking of
installing the permanent MAPs, but this is not a requirement.
installing the permanent MAPs, but this is not a requirement.
3 In 3WXM, generate a site survey order. The site survey order includes the
locations and MAC addresses of the LOS points, and also provides a GIF
image of the floor. (See “Generating a Site Survey Order” on page 106.)
image of the floor. (See “Generating a Site Survey Order” on page 106.)
4 In the site survey tool, import the GIF of the floor plan and use the map
name specified in the site survey work order.
5 Place the portable AP at the first LOS position and assign it the MAC
address specified in the work order. Start the site survey tool on the
laptop PC and take the measurements. (See the Ekahau site survey
documentation for specific instructions.)
laptop PC and take the measurements. (See the Ekahau site survey
documentation for specific instructions.)
6 In 3WXM, import the RF measurements from the site survey file. (See
7 In 3WXM, build the attenuation library. This task updates the attenuation
of RF obstacles that are already in the plan. In addition, this step adds any
new obstacles detected during the survey. (See “Applying the RF
Measurements to the Floor Plan” on page 110.)
new obstacles detected during the survey. (See “Applying the RF
Measurements to the Floor Plan” on page 110.)
8 In 3WXM, define wireless coverage areas. (See “Defining Wireless