DSO138 oscilloscope production suite features:Training for electronics production， complete and detailed descriptive information， including circuit diagrams， production guidance， instructions， troubleshooting solutions， etc.， making a high success rate.Component species diversity for students to component recognition， line components welding， SMD components welding training.Students can obtain at the same time making a practical tool for audio and video synchronization， low-frequency switching power supply， infrared receiver transmitter signal waveform， and many other occasions were observed and measured effectively， increase interest in learning， improve learning outcomes.Kits using ARM Cortex-M3 processor (STM32F103C8)， and includes a 2.4-inch color TFT display， can be used as test ARM development board.Available source， the ability of friends can be secondary development kit based on， for example it can be changed to mV table， data logger and more.Circuit is simple， reliable， low priceCharacteristics of indicators:The highest real-time sampling rate: 1MspsAccuracy: 12BitSampling buffer depth: 1024 bytesAnalog bandwidth: 0 - 200KHzVertical Sensitivity: 10mV / Div - 5V / Div (1-2-5 progressive manner)Adjustable vertical displacement， and with instructionsInput impedance: 1MΩMaximum input voltage: 50Vpp (1: 1 probe)， 400Vpp (10: 1 probe)Coupling modes include DC / AC / GNDThe horizontal time base range: 10μs / Div - 50s / Div (1-2-5 progressive manner)With automatic， regular and Single mode for easy waveform capture the momentAvailable rising or falling edge triggerAdjustable trigger level position， and with instructionsObserved waveform before trigger (negative delay)Can freeze at any time waveform display (HOLD function)Comes 1KHz /3.3V square wave test signal source