USB Driver v6.0 Installation Instructions

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System Requirements

Driver Installation

  1. Download and run (double-click) the file "CP2101 v6.0.exe" from the link above.
  2. Follow the on-screen instructions, accepting all default options in the affirmative. This should install files in two locations.
  3. Follow the "Instrument Installation" instructions below. If you are unable to connect to your instrument as described below, please try installing USB driver version 4.4 instead.

Instrument Installation

  1. First complete the USB Driver installation procedure above.
  2. Disconnect the instrument from your PC, if applicable.
  3. Connect the instrument to your PC and turn the power on.
  4. Wait for any automatic system installation tasks to complete.
  5. Open Device Manager (right-click [My] Computer > Manage > Device Manager).
  6. Double-click the category "Ports (COM & LPT)" to display:

  7. Locate "CP210x USB to UART Bridge Controller" or a similarly named device to verify successful installation.

This completes instrument installation.

Take note of the COM port number (COM5 in the example above). Assign this number in your instrument software, using the System command under the Setup menu, and then run the Hardware Test command under the Setup menu to confirm that the instrument and computer are communicating properly.

Driver Uninstallation

To uninstall any previously installed drivers, right-click on the device in Device Manager and click Uninstall. You may need to do this not only for the COM Port, but also a USB Composite Device.

  1. Right-click on the CP210x COM device in Device Manager and click Uninstall (check "Delete the software driver for this device" when prompted).
  2. If present, you will also need to do this for a "Cygnal USB Composite Device" or "CP210x USB Composite Device" under the Universal Serial Bus Controllers category as shown here.
  3. To confirm that the USB driver is fully uninstalled, disconnect and reconnect the instrument to your computer and make sure that the CP210x device is now listed under Other devices as shown here. The Cygnal or CP210x composite device should also no longer be installed.
  4. If at this point a COM port is still assigned, you may also need to uninstall the driver from Control Panel > Programs and Features and repeat the procedure above.
  5. Rebooting your computer immediately after uninstalling drivers may also help, especially in Windows XP and earlier.


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