Non SDI signal through Mini Converter Optical Fiber 12G

I have a question for people playing with this technology. I want to send a rectangular signal at 120MHz from a coax cable (75 Ohm) through a fiber link. I was wondering if there is some specific logic for SDI in this box, or if it could also work if I send some other signal into the coax plugs? Because the signal does not follow the SDI standard.

I know this is not the usual use case for this devices, but it would be a pretty useful use for this devices.

Thank you,
Samuel

Only these signals are transmitted, which are part of the SMPTE regulations.