Features: USB 2.0 interface and USB power supply, convenient and easy to use. Support for 72 hours long time data logger and wavefom recording and playback examine. Support waveform image import as the comparison reference for real-time waveform. Wide application, suitable for general purpose and precise testing, noise measurements for power supply characterization. Support for buffer wavefom preview and mouse wheel operations. Support for multiple operating systems, for Win XP, for Win 7, for Win 8.1 and for Win10. Support for Serial bus decoding and general purpose I/O interface (TTL3.3V). The source hardware interface to support expansion modules and open software API for third party development. Suitable for being embedded in industrial testing equipment for use and embedded electronics courses for the educational market. Suitable for multi-sensor systems and for Serial bus decoding, car inspection and maintenance, current/voltage recording and analysis system for solar power supply and lighting system, and makers to develop their own modules. Specification: Item Type: Oscilloscope Material: Plastic Model: C550 Input Sensitivity (Vertical 10 Divisions): 50mV/div to 2V/div Connector Type: 2 channels with BNC sockets, 20 mm spacing Vertical Resolution: 8 Bit Maximum Sampling Rate (S/s): 1G (equivalent) Bandwidth (-3dB): 50MHz Input Coupling: AC/DC Input Characteristics: 1MΩ 25pF PC OS Requirements: for Windows XP, for Win 7, for Win 8.1, for Win10 (32 bit and 64 bit). Overvoltage Guard: ±60.0V (x1), ±600.0V (x 10). (DC + AC peak) Triggering Type: Rising/falling edge according to trigger level Triggering Mode: None, Auto, Normal, Single Pre-trigger Capture: 50% of Capture Size Automatic Measurements: Maximum, minimum, average, RMS, frequency, period, positive pulse width, negative pulse width, duty cycle, rise time, peak-to-peak value Deep Measurement: With this function, the waveform jump points are automatically numbered and marked, and the time difference between the two adjacent numbers is automatically displayed Samples Interpolation: Linear or sin(x)/x. FFT: 1024-16K points. FFT Window Function: for Rectangle, for Hanning, for Hamming, for Blackman Math: A+B, A-B, AxB, X-Y Acquisition Mode: Normal Mode / High Resolution Mode / Peak Detect Mode Waveform Recording and Playback: File Format: *.oscxxx. Record Depth: 50-450 Frames File Size: 6MB-20GB Data logger Sampling Interval 1 second to 1 hour Data Logger Record Duration 1 minute - 72 hours Operating Temperature Range 0℃ to 40℃ (20℃ to 30℃ for stated accuracy) Storage Temperature Range -20℃ to +60℃ Reference Output 1K Hz, 1.5 V square wave output with 50% duty cycle Product Size: Approx. 153 x 93 x 23 mm / 6 x 3.7 x 0.9 in Weight: Approx. 517g / 18.2 oz Package List: 1 x Digital Oscilloscope 2 x High Pressure Probe 1 x USB Cable 1 x Compensation Adjustment Lever 8 x Identification Ring (Random Color) 2 x Tip Locating Sleeve 1 x Instructional Manual .