Im not sure I understand the question. There is a read buffer parameter sepcified for the function. I'm assuming you're talking about LabWindows ( the ANSI C compiler) and not LabVIEW ( the graphical programming language ). Check out the documentation for the viReadAsync() function for more information. Here is a <a href="http://digital.ni.com/manuals.nsf/webAdvsearch/87E52268CF9ACCEE86256D0F006E860D?OpenDocument&vid=niwc&node=132100_US";>link</a> to the VISA reference manual.Check out pg. 307 of 423
Bilal Durrani NI
