Under the question was a link to a cable with male optical on one end and bnc on the other.

Im aware of running serially but instead am looking to use both madi ports to have the option to use all 50 channels of i/o available on each of the Orions.

Shouldn’t be much in the way of ground loops the units racked right next to each other 18” bnc cable max.

My English is fine you just missed the link for the cable. (Or it isn’t showing due to your settings)

Here it is again

https://www.googleadservices.com/pagead … amp;adurl=

Sorry, the link was not visible to me so I could not understand the request.

Please don't be misled by the similarity of the connectors.

The cable you are asking about is actually a computer network adapter. It is used to connect multimode fiber ports with different connector types, in this case LC to ST. As mentioned in my post, copper and fiber cannot be directly connected.

There are better pictures of the ST connector on the internet, there you can clearly see the fiber cable in the ST connector:
https://www.ficonet-shop.de/ST-Stecker-multimode-1

The MADIface USB manual states, "The BNC input supports MADI coaxial, AES and Word formats."
So its clear that this is for coaxial / copper connections. Copper != fiber.

Looking at your Orions, I have the impression that they have 32 analog inputs and outputs, for a total of 64 analog input and output channels. That should be enough to connect both Orions to a single optical MADI port, if operated at single speed.

What I do not understand yet, what additional features are you missing in this case, if you connect both devices to the optical MADI port serial. Do you mean the ADAT I/O and Monitor L/R in the back?

The IMHO easiest solution would be, to use an RME product which offers two MADI optical ports.
PCIe: HDSPe MADI FX
USB3: MADIface XT

Otherwise, you would need to bridge between MADI coax and optical.
RME had such products in the past (bridge and router):
https://archiv.rme-audio.de/products/madi_converter.php
https://archiv.rme-audio.de/images/prod … ter_1b.jpg

But those are not available anymore and were also not "cheap"; therefore I think it would be better to use either the proposed HDSPe MADI FX card or the MADIface XT, then you have two optical MADI ports and galvanic isolation, plus a little port/feature reserve on top.

ramses & waedi thank you for your feedback.

Ok I’ve scrapped that cable as a thought.

My ultimate aim was to have access to my Orions’ 100 i/o channels available for use at 48k.

Madiface XT would be ideal with the dual optical but the price tag is hard to justify atm.

I’ll likely just do a Madiface USB / serial setup to get going and add a proper format converter later for the full connect.

Thanks again

Maybe RME staff can shed some light onto this. As far as I know production got stopped due to chip supply shortages but not officially discontinued. Not sure if that situation has changed or if they redesign a successor using a different chip.