GM Detect?

Hey guys,
I have 2 questions about the GM Detect
1. Do I crash if a GM gets to the map or if he is standing near me? o.O
2. When I DC (crash) am I visable for 30 secs or do I disappear immediately? o.O

hope for fast answers :D

PickUp1

1.- When he/she enter's your sight radio
2.- You're visible for some secs, you don't dissapear instantanly