●HV testing, Monitoring and Diagnostics ●Signal processing: FPGA based digital signal processing ●4 channel PD input on TNC connectors ●Embedded RTOS computer ●PD Signal and low frequency sync. signal on same signal path (only one cable needed) ●Pre-configured digital filters: Range of low cutoff: 100/200/300/400/500/750/1000/1500 kHz Range of high cutoff: 500/1000/1500 kHz ●PD frequency band: 10 kHz ~ 2000 kHz ●PD signal resolution: 12 Bit bipolar ●Accuracy: 0.3∘(at 50/60 Hz)