Follow the steps below to adjust the properties of the RF calibration model.
Step 1 Choose Monitor > Maps.
Step 2 From the Select a command drop-down list, choose RF Calibration Models and click GO.
Step 3 Click an RF calibrated model name.
Step 4 From the Select a command drop-down list, choose Properties and click GO.
Step 5 Click the Sweep Client Power for Location check box if you want to enable. You may want to enable this if a high density of access points exists, and transmit power is reduced or unknown. The sweeping range of client transmit powers may improve accuracy, but scalability is negatively affected.
Step 6 Choose the binsize (4, 8, 16, 32) from the HeatMap Binsize drop-down menu.
Step 7 Determine the heatmap cutoff. A low heatmap cutoff is recommended, particularly if the access point density is high, and RF propagation conditions are favorable. A higher cutoff value increases scalability yet may cause difficulty when locating clients.
I hope it may help you