The unit manufactured by collins features 2 connectors for 2 separate transponder unit comunication. Here is the pinout: (Thanks to my friend Curd for providing it to me)
So as you can see both functions are the same. So of our interest we have:
5VAC for panel backlight.
115VAC and return for unit power
Fail logic input
Air/Gnd discrete
ARINC data channel
Here are few shots of the unit powered up. Note when selected transponder 1 you see ---- cause I didn't power the xpdr 1 input.
And here is a video of it during power up test
Hi Edo.
RispondiEliminaHow are you connecting the pins on the back of these units? Are you using original plugs or something else?
Please let me know. Tom.
Yes Tom I am using its original plug
RispondiEliminaWhere did you manage to get the original plugs?
RispondiEliminaI had them in the shell I bought. I can retriem em for you but they are not cheap to buy. 50-70 range each usually
RispondiEliminaThanks Edo but I will try to find a cheaper alternative. I'm sure there is something I can attach to the pins that wont be permanent so I can still disconnect them.
RispondiElimina