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Home > CGM-101



CircuitGear Mini

Standard Function Generator
Arbitrary Waveform Generator
Network Analyzer
Digital Inputs and Outputs
PWM Output
and more...


An oscilloscope, waveform generator, and digital I/O port integrated into one small, low cost unit.

  • 2MS/s dual channel, 11-bit oscilloscope
  • 200 kHz DDS arbitrary waveform generator
  • Eight channel digital I/O
  • USB powered, no AC adaptor required
  • Open source software for Windows, Linux and Mac

    Wow! Will use in my classes.THANK YOU for providing source code! --E.M., Toronto.

    Your device with my Mac Core 2 Duo Mini is perfect for my audio design projects. --D.P., Toronto



    Click Here to Download the Datasheet


    Thank you again for providing great instrument. I recommend my friends to get one. --Y.M, Japan

    The oscilloscope is just fantastic. --O.E.O., Nigeria


    Screen Shots




    Maximum Sampling Rate
    Analog Bandwidth
    200 kHz
    Input Voltage Span
    10mV/div to 5V/div
    +/-25Vp-p with 1X Probe
    +/-250Vp-p with 10X Probe
    Input Ranges

    9 ranges in 1:2:5 sequence
    2Hardware Ranges

    Vertical Calibration
    Yes, software
    Input A/D Resolution
    11 bit
    Input Impedance
    Timebase Span
    500ns/div to 20s/div
    Timebase Ranges
    24 steps in 1:2:5 sequence
    Normal, Auto, Single Shot, External
    Trigger Polarity
    Rising and falling
    Trigger Level
    On-screen, cursor selectable
    Pre-Post Trigger Display
    On-screen, selectable
    Amplitude and timebase cursors
    Sample Memory
    1K points/channel
    Display refresh rate
    > 5 updates/second
    USB 1.0 or 2.0
    Additional Displays

    Strip Chart Mode
    X-Y Plot
    Spectrum Analysis (FFT)
    Waveform Math

    Waveform Generator

    Frequency Range
    0.2 Hz to 200 kHz
    Frequency Resolution
    0.2 Hz
    Output Amplitude
    Amplitude Control
    Offset Control
    Vertical Resolution
    8 bits
    (Independent of Amplitude)
    Output Impedance
    150 ohms
    Standard Waveforms
    Sine, Square, Triangle, Ramp, Noise
    Arbitrary Waveform
    8 bit resolution, vertical and horizontal

    Digital I/O

    8 bits, 5 volt, HCMOS
    8 bits, 3/5 volt, HCMOS
    Variable Frequency
    Variable Duty Cycle
    Trigger In
    Trigger Out

    Vector Network Analyzer/Bode Plotter

    The Bode Plotter is VNA (Vector Network Analyzer) software that operates the CircuitGear hardware over the frequency range 0.2 Hz to 200 kHz to measure amplitude and phase for circuit theory and filter design exercises.

    System Requirements

    Pentium 600 MHz, 128 MB RAM, 30 MB Hard Drive Space
    Minimum 1024x768 screen resolution at 16 bit color depth
    USB Port
    Windows XP/Windows Vista/Windows 7 32/64/Windows 8

    Linux with kernel 2.4 or higher, X Windows
    USB Port

    Mac OS X 10.4 or higher, PowerPC or x86
    USB Port