3Com WX4400 3CRWX440095A WX1200, 3CRWXR10095A manual 3WXM supports concave polygons. a concave

98CHAPTER 5: PLANNING THE 3COM MOBILITY SYSTEM

	1	Click at a vertex, then move the cursor to the next
		vertex.
(polygon)	2	Repeat until the polygon takes the shape you want.
		For a polygon with n sides, click n-1additional times
		at the vertices. For example, to draw a 7-sided
		polygon, click at 6 vertices.
	3	At the last vertex before completing the shape,
		Right-click to complete the polygon.
		3WXM supports concave polygons. A concave
		polygon contains an internal angle greater than 180
		degrees.
	1	Click at the start of the line.
(line)	2	Drag the cursor to the end of the line.
	3	Click to finish.
	1	Click to exit RF obstacle mode.

(cursor)

Using an object other than a line to represent an RF obstacle’s dimensions does not materially affect the calculation of RF attenuation. When 3WXM calculates attenuation along any vector passing through the obstacle, it counts the obstacle’s RF attenuation only once, regardless of the floor space it occupies.

The Create RF Obstacle dialog box appears.

4Go to “To use the Create RF Obstacle Dialog box” on page 96.

Importing RF You can import RF measurements from a site survey file generated by the Obstacle Data from a Ekahau Site Survey Tool. 3WXM uses the site survey data to assign

Site Survey attenuation values to objects in the floor plan.

This method of adding RF obstacle data requires the following tools:

„3WXM 4.1

„Ekahau Site Survey™ Tool (www.ekahau.com) and a laptop PC on which to run the tool when you take measurements.

„An “AP on wheels”, a portable AP that you can move to different locations on the floor as you take RF measurements with the site survey tool.