USB Oscilloscope Software

Download Summary

Software for the Parallax USB Oscilloscope (#28014) - RETIRED.

File NameSizeUpload Date
28014-USB-Oscilloscope-Software-v5.1.1.zip3.05 MBThu, 2012-10-18 08:34
28014-USB-Oscilloscope-Software-v4.0.exe.zip5.18 MBThu, 2012-10-18 08:34

Download Version & Details

Please note:

  • Version 4.0, which operates on Windows 2K/XP, is compatible with the Understanding Signals v1.0/v1.0a Stamps in Class text.
  • Version 5.1.1, which runs on Windows XP/Vista/7, does not support the Understanding Signals text.

Version 5.1.1

The Parallax USB Oscilloscope Software v5.1.1 is a complete rewrite, not an update of the 4.0 software, and includes many improvements as shown in the lists below. This version is Windows XP, Vista, and 7 compatible.Please note that this software is not compatible with the Understanding Signals v1.0 text, nor does it have the FFT or zoom features of the 4.0 software. If you require these features, please use USB Oscilloscope Software v4.0 (requires Windows 2K/XP).

Bug fix in 5.1.1:

  • Fixed "Unable to retrieve PortsGUID" error when enumerating serial ports on some computers.

New features with Parallax USB Oscilloscope version 5.1 (also included in version 5.1.1)


  • 150% faster refresh rate
  • Preview plot with live data (area on top)
  • Variable trigger position
  • 5 different background grids
  • On-screen trigger position indicator
  • Save BMP with choice of black background or white (to save ink)
  • Variable Persistence Dots


  • Cursor snap-to-plot
  • Reference waveform
  • Help file
  • Print save/load function
  • Revised Export Data format
  • Load/Save Settings option

System requirements for Version 5.1:

  • Windows XP/Vista/7
  • Internet Explorer 6.0 or higher
  • 256 MB RAM, or operating system recommended minimum
  • 25 MB available hard drive space
  • Available USB port. Since the Parallax USB Oscilloscope is powered through the USB port, it is not recommended to use an unpowered USB hub.
  • 16-bit color video card
  • Mouse or other pointing device

Version 4.0

This information relates to the Parallax USB Oscilloscope software v4.0.0, its on-line help file, and the Understanding Signals v1.0a. If you wish to use the newer V5.1 software, please visit the Parallax USB Oscilloscope software v5.1. Please note that the V4.0.0 software only runs on Windows XP/2000.

System Requirements for Version 4.0:

Minimum** configuration:

  • Windows 2K or higher operating system*
  • Pentium 233 MHz processor
  • 32 MB of RAM
  • At least 15 MB of free disk space
  • Graphics card able to display an 800 X 600 resolution at 16-bit color depth.
  • HTML Viewer
  • Mouse or similar pointing device

Recommended** configuration:

  • Windows XP
  • Pentium II 450 MHz processor
  • 64 MB of RAM
  • 20 MB free disk space
  • Graphics card able to display a 1024 X 798 or higher resolution at 32-bit color depth.
  • HTML Viewer
  • Mouse or similar pointing device

* - Windows 95, 98, and NT are not supported; Windows XP is recommended.

** - Performance is based on CPU speed.

Installing the Version 4.0 Software:

  • Install the software by clicking on this link Oscilloscope Setup Software 4.0 (.exe) and following the Install Wizard directions. The required Windows XP/2000 compatible VCP Drivers can be installed/updated by the installer.
  • Connect the Parallax USB Oscilloscope hardware to your computer’s USB port.
  • NOTE: You will get the best results if your Parallax USB Oscilloscope is the only device connected to the root, because this device is powered from the USB port. If you need to have other devices connected that are also powered from the same USB port, we recommend you purchase a powered USB hub.

Running the Software for the First Time: (These instructions replace those found in the README files)

  • In your computer’s Device Manager, look under Ports (Com& LPT) and note the number assigned to the new USB serial port.
  • Run the Parallax USB Oscilloscope software from the desktop icon, or from Start → Parallax USB Oscilloscope → USB Oscilloscope4.0.0.
  • Click anywhere on the software identification window to open the interface.
  • From the menu bar, select File → Set COM Port to open the window shown below.
  • In the Selected COM Port field, enter the COM port number that you identified as the new USB serial port. When the correct COM port number is entered, the dot indicator below the field will turn from red to green.
  • If you wish, follow the prompts to calibrate your probes.