Most analog-guage aircraft have their TCAS displays built into their VSI, therefore called an EVSI. It still performs the VS
function, but it will have a small aircraft symbol, and display the traffic in symbols around your own symbol. When an approaching aircraft gets too close, it will turn into a square, then a red square. The CAWS (cockpit aural warning system) will sound out a TA
, or Traffic Advisory, such as "Traffic, Traffic"....if it gets to the point of the traffic becoming a red square, you will get a TR
, or Traffic Resolution, such as "Descend, Descend, Descend"....at this point, the VSI will come alive with arcs on the commanded FPM....the computer will decide if you should climb at 2,000 FPM, or descend like a banshee at 5,000 FPM, etc etc. A green arc will denote where the needle should be...a red arc tells you where you should not be flying to..i.e. into the traffic. If you were to give too shallow of a climb, CAWS would tell you "Monitor vertical speed", until you corrected with sufficient climb.
The other aircraft's TCAS computer, of course, would have it coordinated so that you both weren't descending
Kind of a crash course description (no pun intended), but there ya go.
"The cockpit, what is it?" "It's the little room in the front of the plane where the pilot sits, but that's not importan