I am having a problem where it appears that LabVIEW is locking up with transmitting commands thought the VISA USB port. I am talking to a Tektronics 3021B waveform generator with commands that turn on/off the output port and to program a pulse width. I am using the labVIEW instrument driver from the National Instruments web site configured for the unit attached to the USB port. The code will run for a while the just hang up while running. If this happens I can go to the interactive mode and excute commands without a problem. I have not tried any of the other interface options such as Ethernet or GPIB. Bill Lane Cooper-Standard Automotive

Instrument Control (GPIB, Serial, VISA, IVI)

I'll have a look at the code again.

I'll note down the exact combination of driver and LV software being used.

Regards

Shane.

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