Thank you for the information.
I can hardly tell if this is the right PDF, it's from another forum...
So you think it's not a camera link? Then how can I connect it to a computer?
I have a old oscilloscope with 20MHZ bandwidth, but I never tried to measure a digital circuit, how to determine the connector type by scope?
The original Indigo seems to be died and bought by FLIR, I cannot even know what's their website. I emailed a "Indigo" from google results and got no reply, maybe I can try FLIR later.
Like Mike said, if the connector says "aux", that's all it is. Your datasheet says there is a RS-232 link in there somehow.
I suppose that back then they sold you a weird cable that went from the AUX connector to a DB-9 for the serial port, and whatever else you could control.
20MHz is not a lot, but I would just carefully probe each pin of the connector, look for life, who knows that's there? At least you'll start somewhere. Maybe look with a DMM, there might be some power pins there too.
Does the RCA output NTSC/PAL video? Then all you need is a video capture board. Probably won't get 12 bits out of it.
Sure, try FLIR, costs nothing, and most people will try to help.