The LabPro sensor interface cannot be used with Graphical Analysis app.

General Troubleshooting steps:

  1. Make sure the interface has power. For trouble shooting purposes, remove the batteries from LabPro. A few seconds after connecting LabPro to AC power, it should make the “happy sound” to indicate that it has power and has passed a self-test.


Download the MP3, or WAV file.

If the LabPro does not make the “happy sound”, see
LabPro gives unfamiliar beeps or does not make the "happy sound."

  1. Check all of your cable connections. Make sure that one end of the cable is completely plugged in to the interface and the other end is all the way into the computer.
  1. Are you running Logger Pro version 3.16.2? To find out, open the program and choose “About Logger Pro“. The exact version number will be at the bottom of the window that opens. If Logger Pro was installed via a push or image process from the school IT department, there is chance the software drivers are not installed correctly.

Are the device drivers installed correctly? (For Windows with LabPro, original LabQuests, LabQuest Mini, and LabQuest Stream)

  1. If you have multiple computers and interfaces, with some of them are working and some are not, try methodically switching interfaces, cables, power supplies and computers to see if the problem is with a piece of the hardware. We sell replacement power supplies and cables and while all LabPros ever sold are no longer under warranty, we often can repair them. If you continue to have problems with your interface, contact support@vernier.com or call us at 1-888-837-6437 for further assistance.

Logger Pro can not connect to LabPro

Product Overview

Batteries and Power

Care and Maintenance

Updating the LabPro Operating System (OS)

Using Computers with LabPro

Using Calculators with LabPro

Remote Data Collection with LabPro

Do It Yourself (DIY)

Using LabVIEW with LabPro

Using the Signal Generator Feature of LabPro

Tips and Tricks

Using LabPro with Products from Other Companies

Using LabPro with Older Vernier Software and Sensors

Sensor-specific issues

Extensive help and troubleshooting tips for each of our sensors is available on the individual sensor pages.