Hi Paul,
These issues and much, much more are covered in our Picogroup areas. You are welcome to subscribe.
Briefly:
Quote:When I take a capture ,how can I save all screens in the buffer,instead of just the one on the screen?
You will find the answer to this in the File menu.
Quote:I also notice when saving captures with the latest Picoscope that the files are sometimes several MB on the disc.
Yes, they often are. That is because PicoScope can collect enormous amounts of data. The size of your file is dependent on how high you have the samples turned up, how many channels you are running, and what collection mode the scope is using.
Not long ago we increased the maximum file size for upload here to 8Mb. This covers just about any single screen capture data file.
Collecting large amounts of data is what Pico does well. It's not a problem.