I can understand that. I will have to use the QA403 with an external oscillator. Other - analog - equipment that I use for measurements shows useless results with the QA403 bursts. I use analog voltmeters, scopes, wattmeters and of course speakers. With bursts I get I get garbare in, garbage out. If I had known this prior to purchasing the QA403 I don’t think I would have purchased one. I know about future developments in this area, so I can only hope it’s worth waiting.