Time Domain Reflection(TDR)testing method,high precision and easy for operationFour channels,can be used on the same board for 50 Ohm impedance test and 100 Ohm differential impedance testAutomatic data storage,output test report upon requirementsControlled impedance test range:20-150 Ohm single-way test40-200 Ohm differential impedance test Testing uncertainty range: 50 Ohm single-way test100 Ohm differential impedance testLength of testing circuit: 0.09-2m