... : CH1, CH2, EXT, EXT/5, AC lineTrigger type: Edge, Pulse, Video, Slope, AlternativeMath operation: +, -, *, FFT, invertDigital filter: High pass, low pass ... save: Bitmap save, CSV save, waveform save, setting saveInterface: double USB Host, USB Device, LAN, Pass/Fail interfaceLanguages: Chinese, English, Spanish, German, French ...