George, I'm not aware of any LabVIEW instrument drivers for Grass Stimulators. You can try contacting them to see if they have any LabVIEW code available. Sometimes vendors will have LabVIEW code that is not available on their website because it is not of release quality, but this code can still be helpful getting started. Otherwise, I might be interested in developing a driver for this instrument. Send me a programming manual for the instrument and I'll let you know if we can help.
Jason Hobbs Instrument Drivers
