scope:

The scope of the Train Display System (TDS) thus includes: a) Functions, except functions defined in the ETCS Subset 121. These functions describe exchanges between TDC and the connected display systems; b) Performance allocation (RAMS included as per EN 50126): for each function defined in item a), defining the performances needed and the degraded modes recovering; c) Needs for certification: description of special requirements to avoid ETCS recertification after other display system modification; d) Train Display Controller (TDC): • Redundancy management; • Architecture; e) For each system connected (except those defined in ETCS Subset 121): the Functional Interface Specification (FIS). This Technical Report excludes the following items: • Communication protocols (e.g. EN 61375 series); • Ergonomic aspects; • Interface with ETCS (Subset 121); • Train functions; • GSMR EIRENE functions; • Use of the displays as terminals for maintenance purpose.