... Scan display featureSPECIFICATIONSRange,0 to 9999 mm, at steel velocityMaterial Velocity,1000 to 9999m/sDisplay Delay, -20 to 3400 µsProbe Delay ... Tunable Square Wave PulserPulse Repetition Frequency ranges from 10 Hz to 1000 HzPulse Energy,Low, Medium and HighDamping, 100, 200 ... Strong case box probecableUSB interface can connect with the computer. Power interface can recharge the battery.Rotary knob ...