# Power

## Basic calculations

Basic calculations are always calculated and displayed in Channel list.

## Period values

We can calculate Period values = values for voltage, current and power for:

**Periods**= each = 1, 1/2, 2 or 4 period can be selected from drop down list

**Overlap**= 0%, 25%, 50% or 75%, 90%, 95%, 99% which can be selected from drop down list

This is very helpful for triggering.

## Star-Delta calculation

- To calculate line voltage check Calculate line voltage option.
- If we measure line to ground voltages, we can calculate Waveforms for the line to line voltages by selecting Calculate waveforms option.