+---+ +---+ +---+ +---+ | T | IA0 | T | 0 - 1 km | T | IB | N | | E |-|---| R |---------------------------------| R |--|-| T | | | | | | | | | +---+ +---+ +---+ +---+
100-200m +---+ |<---------------------->| +---+ +---+ | T | | T | IB | N | | R |----+------------------------+---| R |--|-| T | | | |----- 0-10m | | | | | +---+ | | +---+ +---+ |Ia1 | Ian +-+-+ +-+-+ | T | | T | | E | | E | | 1 | | n | +---+ +---+ TR - lezáró ellenállás (100 ohm) IA - elektromos interfész (TE) IB - elektromos interfész (NT) B - IB helye, ha TR benne van az NT-ben
+------+ | TE 1 |------+ +------+ | +---+ . +----| N | . | T |------ +----| | +------+ | +---+ | TE n |------+ +------+