The present invention provides a method of testing a policy to detect problems and provide a mechanism for user feedback in advance of policy deployment in a policy-based network management system, so that network traffic will not be affected by errors in deployment. The output power is compared to a set value and a threshold. Position of the table is monitored with a magnetic sensor element arranged on the bed in opposition to the field magnet. The display YUV data and the recording YUV data thus produced are written respectively to a display data area and a recording data area of the SDRAM and thereafter processed for display on a display and record to a flash memory. The analytics system determines whether the segment definitions present a personal information exposure risk for one or more of the visitors, and processes the segment definitions only in response to determining that the segment definitions do not present a personal information exposure risk for one or more of the visitors. The well is one of an n-type well and a p-type well.