Logger Pro can not connect to LabPro

Logger Pro will display the message "No Device Connected" in the toolbar when a LabPro cannot be found. Below are troubleshooting steps to solve the most common problems.

Logger Pro can not find an interface. Logger Pro can see the LabPro.

Hardware Issues

1. General Troubleshooting Process. If you have multiple computers and interfaces, the best test is to try methodically switching interfaces, cables, power supplies and computers to see if the problem is with a piece of the hardware or with the computer. Take one of your completely working stations, and try swapping out different components. First try swapping out a different interface, then a new connector cable, etc. If you can trace the problem to one of these pieces, we can probably repair or replace that part. Specific issues are covered below.
2. Will the LabPro power up? Remove the batteries and disconnect the AC adapter from the LabPro. Connect the AC adapter again and wait for the LabPro to power up. The lights will flash across the top of the LabPro and it will play the “happy sound”. If this fails, see:
   TIL 1030: How do I update my LabPro/CBL2?
3. Is the LabPro identified in Logger Pro but then disappears? There may be a failed USB port in the LabPro. If this happens, the LabPro may not connect at all, or it may connect but then mysteriously disappear. Damaged USB ports can be repaired by Vernier's repair department. Contact Vernier technical support for a Return Merchandise Authorization (RMA). If you need to use the LabPro immediately and your computer has a serial port, use the serial connector.
4. Did you use a third party AC adapter? If you connected an AC adapter to LabPro other than the adapter that originally came with the unit, the LabPro may have blown an internal fuse. Try connecting to a Vernier-supplied LabPro AC adapter that worked with a different LabPro to see if the LabPro powers up. If this does not solve the problem, we may be able to repair the unit. Contact Vernier technical support for a Return Merchandise Authorization (RMA).
5. Is your LabPro connected to a USB hub? If so, make sure that it is powered hub. An unpowered USB hub may ot provide enough power for the interface not function correctly.

Software Issues

1. What version of Logger Pro are using? To find out, open Logger Pro and choose "About Logger Pro". The exact version number will be in the About screen. If you have a version of Logger Pro older than 3.8, you may need to update in order to get the latest USB drivers. The free upgrade from previous version of Logger Pro 3 is our web site at:
   
   http://www.vernier.com/tech/lpupdates.html
   
   Please note that not all computer operating systems work with the latest version of Logger Pro. For a summary of which versions of Logger Pro work with the your OS, see:
   
   http://www.vernier.com/tech/lpupdates.html#older_os
2. How was Logger Pro installed on your computer? (Windows)

   If you did not use a CD to install Logger Pro 3 on your computer, the installation may lack the USB drivers for the LabPro. In some schools, IT staff builds custom installation packages that install the Logger Pro program, but not the drivers to communicate with the interface. Additionally, Logger Pro 3 can be damaged during upgrades from previous versions of windows.

   If you suspect this is the problem, the best solution is to uninstall, then re-install the software, which can be done using the free updater from the Vernier web site. If your IT staff has questions about this process, please have them contact Vernier technical support.

   TIL 2102: (Windows) Logger Pro 3 shows "No Device Connected" when I connect my interface. How do I reinstall?

3. Could Logger Pro be running from a network location? It is possible that Logger Pro is not actually installed on the computer, and is instead located on a server. For Logger Pro to communicate with LabQuest or LabPro, certain driver files are required on the local computer. If Logger Pro is only on the network, the USB drivers will not be present on the local computer, and Logger Pro will not find the LabPro. To fix this, install Logger Pro on the local computer. For details, see:
   
   TIL 469: Can I install Logger Pro 3 to run from a network location?
4. Does your LabPro OS need to be updated? Sometimes an older operating system can cause the LabPro to operate poorly. To check/update the LabPro OS, power up your LabPro, connect it to your computer, and run Logger Pro 3. If Logger Pro doesn’t automatically check the LabPro’s operating system, open the Experiment menu in Logger Pro and choose Set Up Sensors → LabPro:1. In the LabPro dialog box that appears, click the button labeled Update LabPro OS, which is located near the lower right hand corner of the image of the LabPro. You may also update the LabPro OS online: http://www.vernier.com/calc/flash.html
   
   TIL 1168: What do I do if the automatic LabPro OS update in Logger Pro 3 fails?

Additional Issues

Are there a lot of data stored on the LabPro?
When you’re running the Datamate program on a TI graphing calculator, or collecting data in remote mode, you can store data in the LabPro. In rare cases, you can have such a large amount of stored data in your LabPro that it interferes with the LabPro’s operation. The easiest way to delete stored data from a LabPro is to connect it to a TI calculator and run the Datamate program. Select “1” (SETUP), and then select “4” (SAVE/LOAD). In the Experiment menu, select either “3” to delete specific sets of data, or “4” to delete all the data in the LabPro.

Is LabPro Connected with a Serial Cable on Windows?

1. If the computer has more than one serial port connector, have you tried LabPro in the other serial port?
2. Is another program currently running that is also using the serial port? The easiest way to check for this is to just restart the computer, then open Logger Pro first.
3. Do you have an internal modem or an infrared port? If so, it could be taking over the serial port and not allowing other programs to use the port. Do you know of any other applications (such as terminal programs) that could be using the serial port on this computer?
4. If your computer has two physical serial ports AND the computer uses a serial mouse, shutdown the computer and move the mouse connector to the other serial port then reboot the computer.
5. Do you have any power saving features turned on? If so, these might be powering down the serial ports when you want to use them. Try disabling all power savings features (O/S and BIOS).
6. Do you have Palm Hot Sync software running? It can take over the serial port and prevent other applications from using the port. Turn off the Hot Sync software or uncheck the serial port choice in the Hot Sync menu.