If you get the "Sorry, the file cannot be displayed. There seems to be a technical issue ..." error when trying to view an image, a workaround is to click on the cog icon in the upper right side of the media viewer, and then select "Disable Media Viewer". We are aware of the problem and are looking for a solution.
The Tektronix TMA802 is an analyzer for coax-based 10 MBit/s Ethernet networks, introduced in the early 1990s.
It provides TDR and traffic analysis functions when used together with a 50+ MHz oscilloscope.