Beginner's Guide to Large Scale Model Railroading
by Marc Horovitz, Russ Larson

Do I want traditional analog or digital Multi-Train System?
Traditional analog systems use variable DC to power your trains. For single-train layouts, analog power is both simple and economical. But with analog power, you need complex "block" wiring to operate multiple trains. The digital Multi-Train System solves that problem by using Digital AC to power your trains and also to send commands to trains, switches and signals. With the Multi-Train System, you and your friends can play with trains together, running lots of trains over lots of track without complex wiring. You can control up to 128 switches or signals with the Multi-Train System, again, without complex wiring. With the Multi-Train System, you can operate special features - like loco bells and whistles - by remote control, or you can let your computer operate your entire layout for you.

LGB : Automatic Train Control
A Multi-Train System Feedback Interface is assigned an address block of four consecutive addresses. Connect a switch or to the input of the Feedback Interface. When the contact or switch is triggered, it sets the Multi-Train System Switch Decoder terminal with the corresponding address.

PC interface:
Or when used with the Multi-Train System Computer Interface, the Feedback Interface can provide feedback to the PC that a contact has been triggered. Using the operation software provided with the Computer Interface, you can control a multitude of functions: Slow down or speed up, start or stop, trigger sounds, set switches, activate accessories, etc. You can use up to 64 Feedback Interfaces to trigger up to 128 switch decoder addresses or up to 512 inputs to your PC