HDS242S Handheld Digital Oscilloscope Mini 2 Channel 40Mhz LCD 2 in 1 Multimeter with Backlit Auto Calibration Memory Item Type: Handheld Digital Oscilloscope Model: HDS242S Band Width: 40MHz Channel: Dual channel and single channel signal source Real Time Sampling Rate: 250MSa/s (single channel), 125MSa/s (dual channel) Sampling Mode: Normal, peak sampling Storage Depth: 8K Display: 3.5in LCD Waveform Refresh Rate: 10000 wfrms/s Input Coupling: DC, AC, ground Input Impedance: 1MΩ±2%, parallel with 16pF±10pF Probe Attenuation Coefficient: 1X,10X,100X,1000X Bandwidth Limit: 20MHz Timebase Range: 5ns/div~500s/div, which is in decimal 1 to 2 to 5 Vertical Sensitivity: 10mV/div~10V/div Vertical Resolution: 8bit Low Frequency Response (-3db): ≤10Hz at BNC Rise Time (typical on BNC): ≤5ns Trigger Type: Edge trigger Trigger Mode: Automatic, normal, single Trigger Level: ±4 Fractions from the center of the display Automatic Measurement: Frequency, period, amplitude, maximum, minimum, average, peak to peak Communication Interface: USB TYPE C Power Source: 2 x 18650 Polymer 4400mAh Some Performance Parameters of Multimeter: Digital Display: 4½ (maximum display 20000) Input Impedance: 10MΩ Diode: 0-2V Function name Range  Accuracy DC voltage 200.00mV ±(0.5%+5 dig) 2.0000V/20.000V/200.00V ±(0.3%+3 dig) 1000.0V ±(0.5%+2 dig) AC voltage 200.00mV/2.0000V/20.000V/200.00V ±(0.8%+5dig) 750.00V ±(1%+5dig) DC current 20.000mA/200.00mA ±(1%+5dig) 10.000A ±(2.5%+2dig) AC current 20.000mA/200.00mA ±(1%+5dig) 10.000A ±(2.8%+5dig) Resistance(Ω) 200.00Ω/2.0000kΩ/20.000kΩ/200.00kΩ/2.0000MΩ ±(0.8%+3dig) 20.000MΩ ±(1%+3dig) 100.00MΩ ±(3%+3dig) Capacitance(F) 20.000nF/200.00nF/2.0000μF/20.000μF/200.00μF/2.0000mF ±(3.0%+10dig) Frequency Response (Hz): (40-1000)Hz Signal Source Part Performance Parameters: Waveform Output Frequency: Sine Wave: 0.1Hz~25MHz Square Wave: 0.1Hz~5MHz Sawtooth Wave: 0.1Hz~1MHz Arbitrary Wave: 0.1Hz~5MHz Sampling Rate: 125MS/s Number of Channels: 1 Output Amplitude: 20MVP-5VPP (high resistance), 10MVP-2.5VPP (50Ω) Waveform Length: 8K Vertical Resolution: 14bits Output Impedance: 50Ω