... TFT LCD display, it can choose the background colour and wave color acoording to the environment. And the LCD brightness also ... speed enough to record the defect information.Rectification: Positive half wave, negative halfwave, full wave, and RF DB Step: 0dB, 0.1 dB ... via USB port. FUNCTIONS : Peak Hold:Automatically searching the peak wave inside the gate and hold it on the display.Equivalent ...