... 4. Operational DC Bias sourc IntroductionTH2819XA is an automatic transformer multi-parameter measurement instrument used for quality control ... (20 Hz to 200 kHz). Almost all low-voltage transformer parameters can be scanned, including the primary ... full-frequency , LoadMeasure terminal5-terminalModelDirect, Δ , Δ%, V/I (voltage/current monitor)Display320×240 dot matrix graphic LCD display with ...