Select [Power SP. additive average] in the input menu of [Averaging mode].
Select the number of averaging to 1 time.
Every time you click [Average Start] button, the data is updated with the number of time which you selected in the "amount of overlap" of the "sampling condition setting" in the input menu.
This procedure enables to update data in a single frame step every time you press the [Average Start] button.
Revised:2007.08.20