11-28-2012 12:51 PM
I am attempting to connect my USB4065 DMM to my Windows XP (Service Pack 3) PC. After being notified that drivers have installed correctly, I notice that the green status LED is not on.
When I went to MAX to resolve my issues I was prompted with a "WindowsXPUSBHotfix" issue. I promptly downloaded the patch and resovled this. Upon completing the patch and restarting the PC the status LED remains unlight. Everything is plugged in. Again I returned to MAX to see what the issue was.
In MAX I am able to read back the Serial Number but not much else. Everytime I attempt a "Self-Test" I get the following error:
Error -88705 occured at Self-Test
The specified device is not present or is not active in the system. The device may not be installed on this system, may have been unplugged, or may not be installed correctly.
Device: Unknown device
The device comes up in the hardware manager as a USB-DMM Loader (is this right?)
Anyone have any advice?
11-29-2012 03:34 PM - edited 11-29-2012 03:34 PM
What versions of NI DAQmx and NI DMM did you install on your system? Ideally the USB 4065 will show up in device manager under Data Acquisition Devices as a USB-4065.
Also, has this device worked before, either on this computer or another computer?
It's possible that there is a broken fuse on the device. To replace the fuse, follow the instructions located on page 30 of the following manual:
11-30-2012 09:24 AM
I actually just found the solution to this. Apprently my uninstallation of the hotfix and reinstallation of the hotfix again seemed to have solved the issue. The USB DMM now plugs in with no issue and I am able to self test / test panel the device.
It appeared as if the DMM loader wasn't loading the softtware for the USB 4065. Both the DMM loader and USB 4065 show up in Device manager now.
11-30-2012 11:19 AM
Great to hear barenmeister, and thank you for posting the solution.
10-25-2013 08:34 AM - edited 10-25-2013 08:35 AM
I am having the same problem with a NI-USB-6251. Can you provide a link to the "WindowsXPUSBHotfix" patch?
10-28-2013 12:08 PM
Here is the link: