Feature?4 Channel Oscilloscope+8 Channel Logic Analyzer Abundant Trigger type: Video, Edge, Slope, Pluse Width, Overtime, Alternative, Code-type, Duration, Queue, Repeat trigger. Large 7 inch 64K color Display, WVGA: 800*480. USB host and device connectivity, standard. Ultrathin desigh, handy volume, easily portable. Oscilloscope ?1Gsa/s Real Sample Rate; 4 Channels Oscilloscope; 40MHz Bandwidth, 1MRecord Length; 32 automotive measurement and FFT Analysis for Simplified Waveform Abalysis. Logic Analyzer?8 Channles Logic Analyzer; 500MHz Sample Rate 1MRecord Length Measurement? Cursor Measurement:Manual: Voltage difference between cursors: V              Time difference between cursors: T              Reciprocal of T in Hertz (1/?T); Tracing: The valtage and time at a waveform point; Auto Measuerment:Frequency, Period, Mean, Pk-Pk, Cycli RMS, Minimum, Maximum, Rise time, Fall Time, +Pulse Width, -Pulse Width, Delay1-2Rise, Delay1-2Fall, +Duty, -Duty, Vbase, Vtop, Vmid, Vamp, Overshoot, Preshoot, Preiod Mean, Preiod RMS, FOVShoot, RPREShoot Logic Analyzer Specifications?Channels:8 Channels Max. Input Impendence:200K(C=10p) Input Voltage Range:0V~3V Logic Threshold Range:0V~3V Max. Sample Rate:500MSa/s  Compatible Input:TTL, CMOS, ECL Sample Depth:1M Edge Trigger:D0-D7 select slope (rising or falling edge) Pulse Width Trigger:D0-D7 select pulse polarity (positive or negative pulse), trigger pulse width Code-typeCode-type Trigger:D0-D15 select code-type (H, L, X) Duration Trigger:D0-D7 select persist time and trigger