My final purpose is to control a oscilloscope (Tektronix DPO7254) by GPIB-USB-A. To test communication between a main computer and the scope, I wrote a simple write/read VI program using VISA VIs and GPIB VIs of Labview 8.0.
If I tested the code written by GPIB VIs with very simple command like *IDN? or busy?, I can get reasonable communication speed (about 30 msec). But in VISA VIs, the communcation speed is very slow (about 900msec).
Does Anybody know why the speed in VISA VIs is so slow? How can I improve the speed using VISA VIs?
