The XDP II displays graphically PD wave form and the built-in speaker allows to listen PD activities. Those information can be recorded in the equipment along with date and time of the reading. The recorded measurements remain stored in memory even when the product is shut off. This allows the transfer of these recordings to a computer upon return from the work site. The Partial discharge testing is a PREDICTIVE qualitative analysis tool that can warn of a potential upcoming system failure. The XDP II is a powerful and flexible Partial Discharge Measurement System. In addition, The said series is an ultra-wide-band amplification system allowing to measure PD activity. It uses a very high speed detection technique to detect PD activities.