Two channel 3-in-1 digital oscilloscope multimeter: multimeter + oscilloscope + signal generator function 3.5-Inch high-resolution large-screen display, allowing you to read clearly under strong light CH1 CH2 dual channel, 50MHz bandwidth, 280MSa/s real-time sampling rate, signal comparison can better judge and analyze problems, signal detection is more accurate Set and connect to the dual-channel input port, select automatic or manual measurement, and press the SAVE button for 2 seconds to save the waveform 7 signal waveforms can be selected: sine wave, square wave, triangular wave, half wave, full wave, sawtooth wave Arbitrary waveforms: a variety of waveform measurements to meet your daily needs Specifications: Oscilloscope function: Bandwidth: 50MHz dual channel Sampling method: real-time sampling Real-time sampling rate: 200M/280MSa/s Number of channels: dual channels Input coupling: DC, AC Input impedance: 1M0,@16pf Probe attenuation: X1, X10 Maximum input voltage: X1 gear <150V, X10 gear <300V (DC+AC peak) Sampling rate range: 1.5Sa/s-280MSa/s Waveform interpolation (sinx): x Scan speed range: 10ns/div-20s/div Time base accuracy: 20ppm Record length: up to 128Kbyte Sensitivity: 20mV/div-10V/div Displacement range: 4 grids (plus or minus) Analog bandwidth: 50MHZ Low frequency response: greater than 10HZ Rise time: less than 10ns DC gain accuracy: ±3% Automatic measurement: period/frequency/maximum value/minimum value/root mean square/duty cycle/number of pulses Trigger mode: automatic, normal, single Trigger edge: rising edge, falling edge multimeter: AC voltage (V): 0V-750.0V DC voltage (V): 0V-1000.0V AC and DC voltage (mV): 25.000mV-250.00mV AC and DC current (A): 0A-10.000A AC current (μA/mA): 25.000mA-250.00mA DC current (mA): 25.000mA-250.00mA Resistance: 0-250.0MΩ Capacitance: 0nF-99.99mF Hz: can only measure 100kHz 0Hz-999.9kHz at the AC voltage range Diode/Buzzer: √ Low battery indication: √ USB charging: √ Battery model: 3.7V 18650 battery*1 3400 mAh (included) Data storage/viewing: USB connection to computer Sampling rate: 3 times/second Screen display: VA reverse display color screen Screen brightness is adjustable: 30% 50% 80% 100% Data retention: √ Back support frame: √ True valid value: √ Material: ABS/TPE Language options: Simplified Chinese/English Maximum count: 25000 counts