Scanning Electron Microscope Video capturing

[delnis]

I have a 20 year old scanning electron microscope (AMRAY 1820) which sends a black and white tv signal to a Seikosha VP-3500 video printer. The printer has been long dead and my goal is to capture the signal with some sort of capture card set up. The signal is fed through a coaxial cable. What is the best method to approach this problem? I have little to no experience.

 

[delnis]

As I searched around, I found out that Amray is toast, no longer in business. Also, the signal is unique (Not NTSC... etc). If this printer is able to capture it, then it must be doable. I think the technology is so old that no one even uses whatever signal format it puts out. Anyone know of any cards that can take really old video signals?