3Com WX1200 Reference Manual page 151

To resolve optimal power computation problems
If power levels for one or more coverage areas could not be optimized,
show the RF coverage at baseline association and minimum transmit rates
for the coverage areas by doing the following:
1 In the Show RF coverage using listbox, select how you want to display the
coverage:
Baseline Association Rate—Coverage is shown based on the MAP
radio baseline association rate. The baseline association rate is the
typical data rate the radio is expected to support for client
associations. (The baseline association rate is specified during
planning, on a coverage area basis.)
Data Rate—Coverage is shown in colored bands that represent each
of the data transmit rates supported by the radio. These rates are
standard for each radio type.
RSSI—Coverage is shown based on the received signal strength
indication (RSSI) of the radio's signal heard by other radios.
2 In the Coverage Areas section of the Organizer panel, select the scope for
which you want to display coverage. You can display coverage for an
individual radio, a specific coverage area, or all coverage areas on the
floor.
To select multiple contiguous objects, click Shift while selecting.
To select multiple noncontiguous objects, click Ctrl while selecting.
If you need to make adjustments, do the following:
a Manually move the MAPs, or increase the transmit power levels.
b Manually create more MAPs, and place them on the floor.
c Modify the coverage area so that the capacity requirements are
higher.
If you manually add MAPs to a coverage area, they might be moved or
removed the next time you perform Compute and Place.
Computing MAP Placement 151