The XiTRON 2503AH Series High Performance Power Analyzers measure power, voltage and current up to 500kHz with premier precision. Available parameters include V, A, W, Power Factor, Crest Factor, K Factor, THD, Harmonics, Phase, VA, VAR, W.Hr, Triplens, Impedance, Inrush, Mean-Peak Values and Efficiency Loss. The 2503AH Series High Performance Power Analyzers have set the standard for production testing. Independent channel control and unparalleled flexibility and speed have made the 2503AH-3Ch the instrument of choice in 3-phase power analysis. The 2503AH-1Ch/2503AH-2Ch offers cost effective solutions for single or two-phase applications such as power supply and appliance testing. Various versatile interfaces such as GPIB, RS232 and Parallel Printer Interfaces and the XiTRON XView Utility Software are all provided as standard accessories.