I have written a Labview Program that uses GPIB to control an Agilent Spectrum Analyzer and Power Meter. It communicates with and controls the D.U.T. via Telnet. It was debugged here in Massachusetts under Windows 2000. Here the test takes ~ 43 seconds. In Thailand on an equivalent computer running Windows 2000 (Thai) the same test takes ~ 66 seconds. Time is measured by capturing start time and stop time from the O/S. Any clues to account for the difference? The time differential is the same in the development environment and the distribution environment.