I'm posting here since I cannot find any Professional Broadcast area. I have several devices from BFE, Philips and a couple of Ampex items that uses a 15 pole DB style connector that should called 'ES BUS'.
In some device exists in BNC form as well (called ESBUS KOAX), many stuff from BFE uses this but cannot find any information about it!
It looks like some kind of serial connection (like RS422 or 485) but I can be wrong since I really cannot find any info.
For example, I have several switches called BFE bd51 LC z2
If someone can provide me any kind of info I will be really happy!