Well I just stumbled on the way to set the Vario tones on. Using the Jeti Profi box you have to go to the bottom line of the display and go to Tx enter and you get tx with arrow. Arrow sideways and you get Rx. Then arrow down and you get mvariom2 menu this enables all the Vario functions to be set up. I fitted a long lead on the sensor and moving it up and down enabled me to hear the beeps.

This way of using the Profi box also enables access to the Xicoy menu but I think only if it is the first in the chain.

None of this is mentioned in the instructions that I could find

john