Hello,
The first step is to get Windows to recognize your device and then associate drivers for it.
There are two ways to proceed.
1. Either you use the drivers and dll's provided by Tektronics and use the dll's to send commands to your instrument or
2. Use VISA to develope drivers for your device and then use VISA Read and Write to query your instrument.
You will have to look at the programmer's manual for your device to determine the appropriate command(s) to obtain the
screenshot.
Here is a link to an article on
VISA USB control that should be useful to you.
Christian A
National Instruments
Applications Engineer