I don't know why some controls are disable in my picoscope 4424. The peak to peak measurement can't be adjusted to the limits I want. The frequencies can't be filtered in measurement options to show only the peaks above a specific limit. Take a look on the image file. In LABVIEW I 've used the same sensor (piezoeletric acoustic sensor) and I could set up all levels of frequency or amplitude. I thunk this oscilloscope should be run as really one. And you didn't tell us what are the signals measurements limitations because we can't find anything about: You can't use this product if you want control the low and high levels of a signal. This product doesn't works as a real oscilloscope but only emulates one ... At least with this software I very unsatisfied. I take a signal but without control on it. I can't use the 4 channels in frequency mode, for example. But I need to do this. I must have four channels adjusted by frequency. Finally, it's great to create our own adjustments, but I'm a oscilloscope user and I'm interested only in teka measurements. I could acquire a National Instruments data loggers and design my own software, but I can't waste my time. I'm only a user and not a hard or soft developer.