The main VI runs the scope, function generator and power supply. When the power supply not connected through the gpib cable, the main VI runs perfectly displaying the scope's waveform. As soon as the power supply is connected to the gpib cable, the main VI no longer displays the waveform. All devices have different addresses and all the total cable length in meters is less than twice the number of devices. I also exhausted different combinations of star and linear connections...any Ideas as to what I could try next to solve the problem?
