... -Directly & accurately measure the contact open distance,-Be able to test and display the gap wave form, bouncing amplitude, bounce ,over-travel ... -travel characteristic curve of sampling frequency, 40KHz,16 digits-Time measurement range, 0.1 ms~999.9ms-Time precision, ±0.05ms ... of sampling frequency, 40KHz-Sampling precision, ≤0.1%-Coil current measurement range, 0~15A normal,0~300 A for customer order ...