Check the listing for details. [ Whadda Velleman PCSU02 ] Mini 2 Channel USB PC Scope. Condition: New. Listed at 64.95 USD. Description: Oscilloscopes are expensive and complicated instruments? Not this one!This small and easy to use 2 channel oscilloscope has all the features of a full blown oscilloscope and it also has a bandwidth of 500 kHz ±3 dB! Complete with instructions (download), test leads and software (download) and it comes in a design enclosure.Features:Test leadsSoftware downloadUSB cable includedDesign enclosureSpecifications:Oscilloscope:Bandwidth: DC to 2 x 500 kHz ±3 dBInput impedance: 100 kO /20 pFMaximum input voltage: 30 V(AC + DC)Time base: 5 µs to 500 ms per divisionInput range: 100 mV to 5 V/divisionInput sensitivity: 3 mV display resolutionReadouts: true RMS, dBV, dBm, p to p, Duty cycle, Frequency…Record length: 2 x 1k samplesSampling frequency: 50 Hz to 2.5 MHzSample history functionAuto set-up functionPre-trigger function: on 50 µs/div .. 500 ms/div rangesPersistence options: colour graded, variable and infiniteSpectrum Analyzer:Frequency range: 0 .. 125 Hz to 125 kHzOperating principle: FFT (Fast Fourier Transform)FFT resolution: 512 linesTransient Recorder:Timescale: 20 ms/div to 2000 s/divMax. recording time: 9.4 h/screenAutomatic storage of dataRecord and display of screensMax. number of samples: 100/sMin. number of samples: 1 sample/20 sGeneral Information:Markers for: amplitude/voltage and frequency/timeInput coupling: DC and AC8 bit resolutionStorage of display and dataDimensions: 85 x 40 x 14 mmMinimum System Requirements:Windows® XP, Vista, 7, 8 and 10Mouse (or mouse pad)Free USB port 1.1 or 2.0