Yours is an interesting question. From your photo, it appears that the instrument uses a RS-232 serial connection to control it via a computer; the middle cable appears to have DB-9 (9-pin pin or socket) connectors on each end. Old laptops and desk top/tower computers used to come with a DB-9 connector, RS-232 port, but this is no longer the case with modern computers. Today, you would need to purchase a USB-to-Serial interface to control your instrument from a computer. Regardless of whether you are using an older computer with a DB-9 port, or a modern computer with USB ports, you will also need a piece of software known as a terminal emulator (Hyperterminal or PuTTY) to communicate with either the DB-9 port or the USB-to-Serial interface plugged into the USB connector of a modern computer. Both Hyperterminal and PuTTY are available for download from the Internet free-of-charge. However, before we continue, I would need to see documentation for the instrument to confirm that it has a RS-232 serial port. Do you have an English language version of the Users Manual in PDF form, which you can share? And can you provide a photo of the rear of the instrment?