Posted 24 October 2012 - 08:33 AM
I have a U6Pro, fresh install of Windows 7 64bit, installed the LabJackUDSetupV325.exe software, updated the labjackud.dll file in systemWOW64 with the LabJackUDv327 update.
When the U6Pro is idle, meaning no program causing it to do I/O, it constantly disconnects and reconnects from the system about every 8-10 seconds. If I watch the Device Manager I can see the Labjack USB Device, disappear and reappear, and the system beeps with normal USB connection sound, and the green status light on the U6Pro, flashes Off for abiout 1/2 second and then back on and then flashes indicating communication. When I start either the LJControlPanel and go to Test mode, or start my program, the disconnects stop happening. When I exit the program or LJControlPanel the disconnect cycle resumes.
I tried this with 2 separate U6Pros, and I have seen this issue on one other computer.
Any ideas why the disconnects. The device seems to work properly logging a couple of Analog inputs in my program and looks OK in LJControlPanel Test mode.