Seconded,
I have one of these with the TG option, but even the user manual seems to be unobtainium.
Anritsu manuals have always been a pain in the arse to track down.
It is however a fairly straightforward looking design (With some of the biggest DIL packages I have ever seen on the processor and video cards), but I would love to know where they got the neutronium for the chassis, the things are **STUPIDLY** heavy.
Experimenting with grafting an LCD in to replace the slightly soft CRT display on mine is on the todo list, I think the video is composite/sync on green. There is (at least on mine) a composite output on the rear panel which could probably be hooked to a scart cable and hence an old telly easily enough to allow you to verify the rest of the thing is working.
73 Dan.