I have an intercom display, Elvox 5721, and I'd like to program it with its software, called "saveprog".
It has a 6 pin programming connector which requires Elvox's cable which is called 692I/U as in this link.
This cable is hard to get and expensive, but I know for sure that it's an FTDI (according to the drivers of the cable), maybe a UART or other low voltage serial protocol. I think it's not RS232 because I measured only about 1V on a couple of pins. The problem is that I don't know the pinout of this connector in order to prepare one by myself and succeed to connect it with my PC.
Is there a method to extract the pinout only by external tests? I have an osciloscope, DVM, logic analyzer.
Any ideas what should I do to find the pinout? Thanks!