| Watts | True or real power. The true power consumed by a load. The power available to do real work. |
| Vrms | True rms voltage. |
| Vpk | Peak voltage. May be (+) or (-). |
| Vcf | Voltage crest factor. Vpk / Vrms. The crest factor is 1.414 for a sine-wave. |
| Amps | True rms current. |
| Apk | Peak current. May be (+) or (-). |
| Acf | Current crest factor. Vpk / Vrms. The crest factor is 1.414 for a sine-wave. |
| VA | Volt-Amperes or apparent power. Vrms x Arms |
| VAr | Volt-Amperes reactive |
| PF | Power Factor. Defined to be W / VA. |
| Cos phi | The fundamental power factor. The cosine of the angle between fundamental (1st harmonic) voltage and current. |
| Frequency | Frequency of the applied voltage. |
| Inrush | Peak inrush current. |
| THD | Total harmonic distortion. |
| Harmonics | Frequency components of voltage, current and power. |
| INTEG | The built-in integrator measure Wh (Watt-hours), Ah, VAh, VArh and average Power Factor. |
| Inrush Current | The instantaneous peak current when a load is switched on. See the PS1000 Inrush Switch. |
