Oscilloscopes are expensive and complicated instruments? Not this one!Build your own oscilloscope and use your PC to display your measurements.This small and easy to build kit has all the features of a full blown oscilloscope, just like our PCSU200 or PCSU1000.Kit comes complete with detailed instructions and test leads.Specifications oscilloscope: bandwidth: DC to 200 kHz +- 3 dB input impedance: 100 kohm / 20 pF maximum input voltage: 30 V (AC + DC) time base: 10 s to 500 ms per division input range: 100 mV to 5 V/division input sensitivity: 3 mV display resolution readouts: True RMS, dBV, dBm, p to p, Duty cycle, Frequency record length: 1k samples sampling frequency: 62.5 Hz to 1.5 MHz sample history function auto set-up function pre-trigger function : on 0.1 ms/div .. 500 ms/div ranges persistence options: Colour graded, Variable and Infinite spectrum analyser: frequency range: 0 .. 150 Hz to 75 kHz operating principle: FFT (Fast Fourier Transform) FFT resolution: 512 lines transient recorder: timescale: 20 ms/div to 2000 s/div max. recording time: 9.4 h/screen automatic storage of data record and display of screens automatic recording for more than 1 year max. number of samples: 100/s min. number of samples: 1 sample/20 s general information: markers for: amplitude/voltage and frequency/time expert or basic mode selection in software input coupling: DC and AC 8 bit resolution storage of display and data power supply through USB: +/- 200 mA uses Microsoft human interface device (HID) driver, no external driver required dimensions: 94 x 94 mm / 3.7 x 3.7 minimum system requirements: IBM compatible PC Windows XP, Vista, 7, 8 * SVGA display card (min. 1024 x 768) mouse free USB port 1.1 or 2.0