138CHAPTER 6: USING RF PLANNING

7Click Next.

The Channel Assignment Progress page appears.

8Review the results. The 802.11a channel assignments are listed on the 802.11a Radio(s) tab. The 802.11b/g channel assignments are listed on the 802.11b/g Radio(s) tab.

9Click Finish to accept the channel assignments.

The new channel assignments are reflected in the Coverage Areas pane.

Calculate Optimal The “Compute and Place” step is performed using the maximum allowed Power power for the selected channel set in the defined regulatory domain.

Optimal power can be computed for each MAP, where transmit power is adjusted (up or down) to provide adequate coverage with minimum RF interference.

When calculating optimal power, you can manually change positions and counts of MAPs (add or remove MAPs) before the final power optimization is performed. Changing MAP quantities and positions is quite typical, given that an operator can interpret the floor plan and understand any cabling constraints to avoid any positioning problems.

Transmit power levels must be high enough to adequately cover an area, but also low enough to minimize co-channel interference. 3WXM factors in these considerations when calculating optimal power.

To calculate optimal power:

1The Organizer panel is displayed on the left. Expand Sites, right-click on a building, and select Edit.

The Modify Building wizard is displayed.

2Select the Plan RF Coverage tab; then click Compute Optimal Power.

The Compute Power For wizard appears, showing a list of the areas you defined and the corresponding technology.

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3Com 3CRWX440095A, 3CRWX120695A, CRWXR10095A manual Using RF Planning