We have a 10+ year old ASL MR safe long range optics eye tracking system that sends a video of the eye to a control unit. The eye camera output port is standard BNC, but the female (?) input on the control side is not. A cord extends from the unit with an end that is much smaller, resembling a 5V power supply connection more than BNC or RCA. The tip of the connector has a white rim.
The cord is annotated
75 ohm coax 1030 AWM 1378 200
The documented ("camera in", pg14) port on the control unit (at the other end of our mystery cord) looks proprietary.
Any idea what this connection is or what to use to adapt to BNC?