Thank you for your elaborations.
"Scatter" does not have to be the same thing as "bouncing".
They simply hit the ceiling, wall, floor, a piece of furniture or a tree branch or whatever between the target and themselves and the grenade detonated.
Motion sensor grenades use standard ranged rules (target get to use reaction+intuition to avoid it). As long as they get one net hit or more the grenade will hit their target (and not scatter at all).
My problem occurs in a very specific situation with impact triggers. By the rules it is possible, that you shoot at a target 20m away from you, the target wins the opposing test and the scatter roll is 2 for direction and 16 for range. This means that you shot the grenade 4m in front of you. The grenade didn't leave the safety zone...it couldn't have, because it is impossible (except when you are glitching) for this type of triggered grenade to bounce from something and come back. So the grenade would just lie there and do nothing. But the rules state, that the grenade explodes immediately after scattering. How can I give a logic explanation for the grenade being primed although it didn't travel more than 5 meters?
The purpose of the Airburst link is to detonate wireless grenades for you.
Both your grenade launcher and your mini grenades need to have Wireless ON.
[...]
So technically I got a motion triggered grenade, that uses a success test instead of an opposing test to hit?