Fuataba "Buddy Box"

[Dimosthenis]

Hi guys, I am trying to use the Futaba "Buddy Box" (trainer box) to control FMS. The box is powered from the transmitter, but in this case the the power has to be provided externally. Does anybody know which pin and what voltage is used for supplying the trainer box? Is the signal output from the trainer box the same as the signal from the transmitter? Is there any ather aspect to consider?

Thanx
Dimosthenis

[bascule]

Hi, I just built an interface for the FMS and my Futaba 7UHFS has the following pin out: clockwise from the silver ground pin:Ground
Battery
signal
?
no connection
?
Sorry I don't have pin numbers,I built my own connector using spare pins and cyanoacrylate with a plastic protector over the socket. The one strange thing tho' is that all the pins stay the same whether the trainer switch on the Tx box is on or off.The B+ is there and the signal does not change-whether it is loaded or not-as seen on an oscilloscope.