I've been taking scope pictures with my phone, but sometimes the pictures do not have good focus and the picture size is large. The Tek scope has a serial port which commands and data can be sent and received. But I have had a lot trouble to get the Tek's own software to work. For screen capture, it is actually a lot simpler: just set up the hardcopy to output to RS232 and choose a format such as PNG, then just hit the hardcopy button, the data come out on the serial port. Now it is just a matter of capturing it on the PC, which can be a simple Python script using pyserial. A null modem cable is necessary; the maximum baud rate is 38400. It takes about 3-4 seconds to get the screen shot, which is much better than you can capture with your phone.
