Ok firstly - i have read the manual

and it is not discussed there (actually there are a lot of things not discussed there), I already have the GPS in the RS232 and when i bought the mount it came with a 50ft serial to rj45 connector that "fits " rather nicely in the FEATURE port of the gemini. My question is can the gemini be controlled through the "FEATURE" port?
I have not tried it yet for fear i will do something to the unit?