I wrote one "vi" to remote agilent MSO6104A through serial port. When the source apply to the oscilloscope, the waveform can be shown continuously on the Front Panel if I press "AutoScale" button. But if I choose manualy to set Horizontal and Vertical division, if the settings just match the source, the waveform will be shown continuously. Othervise, its keep running without showing any waveform and if I'm trying to change the division settings, the "vi" gives me the error message "out of data range". Please advice me to solve this probelm.
