T-VASI indications
 

Can anyone shed some light on T-VASI indications for me.

From what I understand if you fly a constant light setting (eg 1 dot high) you are still flying the 3 degree approach path, however you will land long (depending on size of aircraft of course). However I can't find anything that will tell me how long the landing will be or your height above 'on slope' approach path when flying 1 dot high (or 1 dot low for that matter).

Cheers for any takers,
Snuffaluff