Self Test Period

In the Self Test Period area of the "Schedule UPS Tests" dialog box, you can disable UPS self-tests or set when they occur. APC recommends periodic self-tests to ensure that the UPS is working correctly.
Button
Function
Off Turns off automatic self-tests
At Turn On Schedules a self-test only when the UPS turns on
Daily Schedules a daily self-test. Below Daily, specify the time of the test. Enter the hour in the first box and the minute in the second box, and select AM or PM.
Weekly Schedules a weekly self test schedule. Below Weekly, specify the day and time for the test to occur. Select the day in the drop-down list box, enter the hour in the second box, enter the minute in the third box., and select AM or PM.