Viper500

I have an XP8103 and I want to use the three positions of the Flap/Mixing switch to drive a servo to three distinct positions. I am mounting a camera in a plane and I need the first position for off, the next position for focus and the third to take the picture. I have looked through the manual, but I don't see how to do that. Can anyone help? Thanks.

dsnyder

Plug the servo into channel 6 would be the easiest, then use the landing menu to set the lower position, and sub trim to set the upper/middle posiition.