Hello All,
I got this keyboard at an auction a few years ago, I believe it was used to type the emergency broadcast warning messages for tv systems in Arizona.
Its got a PS/2 plug on the rear, and the upper left door reveals an orange button and the 8 dip switches.
I can't get it working

It will light up caps lock and that is toggleable, but nothing sent to the computer afaik.
It came with a ps/2 to din5 cable and din5 to ps/2 adaptor, and I got another ps/2 to ps/2 cable and a ps/2 to USB. No difference in behavior...caps lock light works.
I've tried what I think was every dip switch combo, nothing. Open to any suggestions...
no idea if it uses some custom firmware, I can probably handle dumping the rom if thats a thing.
Thanks!