3com WX4400 3CRWX440095A Manuel D’Utilisation

C

HAPTER

 6: U

SING

 RF P

LANNING

If your floor drawings are contained in JPEG or GIF files, this step does not 
apply. Go directly to “Define Site Information” on page 121.

If you plan to import AutoCAD DXF™ or AutoCAD DWG files into 
3WXM, you should perform some “clean up” work before importing the 
files. Doing this work before you import the files into 3WXM creates a 
more compact file, requiring less storage space. Typically, the more CAD 
diagram cleanup that is done within the CAD software, the more 
smoothly the drawing will import into 3WXM. 

To clean up the AutoCAD file:

„

Perform an audit

„

Turn on, unlock, and unfreeze all layers

„

Remove unnecessary notations

„

Purge unused blocks, line types, and layers

Typically, based on the drawing technique chosen when the drawing file 
was created in AutoCAD or TurboCAD, a single object may be drawn 
with more than one line; for example, walls. When such an object is 
imported, it results in more than one object in 3WXM. To avoid the actual 
object being defined as more than one obstacle, delete parallel lines 
within a certain distance.

Another method you can use to achieve the same result is to group all 
the lines into one object. For example, you might group four lines that 
form an office or conference room to create one attenuation factor for 
that entire area. Or, group multiple lines that were drawn in the floor 
plan to create a bigger line.

Grouping lines is not always recommended. For example, grouping lines 
into one object does not work well with polylines. Grouped polylines are 
recognized by the planning tool in 3WXM as a single, monolithic 
obstacle. This causes incorrect results when viewing RF coverage.