Massbus Interface

This document provides the field maintenance print set for the RH20 Massbus Interface (RH20). It contains a comprehensive list of unit variations, a table of contents for the print set modules, and detailed documentation for the RH20 interface components, including EBUS, CBUS, and MBUS control modules. It also includes schematics, logic diagrams, and configuration notes for maintaining and repairing the RH20 interface.