[Motorola] Smart Rib RLN1015C

[Glenn Little WB4UIV]

I have a RLN1015C Smart Rib.
I hope to be able to use this for reading and programming some Sabers 
I bought at a recent hamfest.
I understand that the center pin for this Rib is negative.
What is the Voltage and Current of the required power supply?
The Rib has a three position switch 1, 0 and XP.
What is the XP position for?
There is a three pin header inside the RIB, what is this for?
Pin 14 is broken off on the DB-25 connector. Is this pin used?
Is there a manual available for this RIB?


Any help greatly appreciated.

Thanks
73
Glenn
WB4UIV