I am interested in having the capability (of not using VISA) for the same reasons as you. Please let me know if you are able to find a substitute for the VISA serial functions.
<Yes. My company manufactures a variety of instruments that communicate solely with serial. We have been using NI-VISA and are happy with it, but NI-VISA requires an installation that is often larger than the application we supply to our customers, and there are licensing restrictions for distribution. I was hoping to develop our own serial functions in a much smaller package than NI-VISA. This is why I am interested in using the Windows API. NI-VISA with its support for so many kinds of instruments seems like overkill for our application. When the customer installs the NI-VISA driver they end up installing features to support GPIB etc. that are not needed for our application. Allen > Lewis Drake Process Automation Corporation Belle Mead, NJ 908 359-1011 www.processauto.com
