Port USB USB-6009 bug

Hello

I would ask for advice. This is the scenario in a few words:

We have a new project already written in LabView to control a mass of a machine from K - Ar spectrometer and record two analog channels of an NI USB-6009 device data. Rate is the maximum: 24 kHz per channel.

After deployment, we started to get a DAQmx driver strange error, but only when we used a certain port on a DELL laptop (this port was a 2.0, the other SS 3.0). USB ports did not create this error. After several days, when we realized, the error is not in our LabView code, we found this conversation in the forum:

http://forums.NI.com/T5/Multifunction-DAQ/USB-6009-overflow-error-on-continuous-mode-after-restart-o...

We believe that it would be strange to tell the client that "Please do not use this device ON this port, because it's a little bug...". ", then

We were very happy, because this DAQmx property through the property node solved the error of USB port (see attachment file).

However, a few days ago, we got an unexpected behavior: our program during a mode over DAQ completed the acquisition of a few seconds earlier, then he should have done. There was no signal error, but only this strange behavior, like in the "task done? VI DAQmx reported "too early."

Since this 'error', we could not reproduce it yet (so far), we have used the program several times without problems via this "slow" USB 2.0 laptop port.

Well, I'm always interested in a definitive solution of OR to fix this in their products and in the DAQmx driver. I heard many colleagues that they run into this bug of USB port several times when they use NI HWs, and this problem is very annoying. I know that the solution usually easy: plug the device into a different port. But I think that these materials should run flawlessly on the USB ports on all THE...

Hi man,

If you found your own workaround by plugging the USB module to another USB port.

You said the accures only mistake on the special USB computer ports. This can be caused by an internal hub used in the computer. USB hubs may cause difficulties with hardware OR.

Do you have other questions?

Kind regards

Melanie

Tags: NI Software

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