Cab radios and on-board communication

Systems and devices are compatible with a wide range of operational conditions supporting nearly all trains classes.

High mean time between failures (MTBF) for cab radios reduces overall lifecycle cost.

Specific cab radios are suitable for use in a global GSM-R environment and in specific markets.

Fixed cab radios comply with current EIRENE specifications.

Asset management in the Cloud enables remote software upgrades.

Provides an essential link for the transmission of Radio Block Center (RBC) to the train, where an in-cab display allows the driver to control the train without reference to line-side signals.

The Nexus MCX is Siemens next generation compact cab radio and Siemens’ answer to the Tetra/GSM-R convergence to IP technology. The Nexus MCX builds upon Siemens 20 years’ experience in the Cab radio market.

The Nexus MCX also offers built in Wi-Fi and GPS connectivity as well as embedded accelerometers. This also offers the opportunity to run a number of location dependent applications like Connected-Driver Advisory System and Remote Condition Monitoring.

The GSM-R transportable cab radio is a self-contained unit consisting of a GSM-R radio complete with a textual MMI, handset, and loudspeaker in a robust case. The transportable cab radio is designed to be easily carried between trains and installed with minimum effort and expertise. It can be used as an emergency backup or, in trains without a cab radio, permanently installed.

The Nexus Voice Cab Radio offers a number of new features to improve functionality and performance. The Nexus Voice Cab Radio can have two types of driver control panels, and is designed to be installed with either one or two textual driver control panels.

It features a unique gland box system allowing fast installation and replacement, and an optional uninterrupted power supply unit providing either two or four hours backup power in the event of train power supply failure. A demonstrated MTBF in excess of 250,000 hours minimizes downtime and total lifetime costs.

GPS is integrated into the processor board along with the option of 2 x LTE modules and a Wi-Fi module for multiple data transfers for an array of applications. A new GSM-R transceiver optimizes the shielding of unwanted interference from publicly operated networks. This is an essential addition with the ever-encroaching public 3G/4G networks threatening to interfere with the rail communications network.

The Nexus 19” builds upon the Nexus Cab Radio by introducing a 19” rack solution. Including a new interference resistant transceiver, the Nexus 19” provides the optional modules of GPS/GNSS, 3G/4G, Wi-Fi, additional processor, accelerometers and additional memory. These new modules offer the opportunity to vastly improve the cab radio functionality.

Alongside the voice capability, Nexus 19” is also able to provide full EDOR connectivity to an ETCS On-Board Unit in a fully integrated compact 3U sub rack.

The Siemens SDR-200 ETCS on-board data radio provides an important link for the transmission of movement authorities from the Radio Block Center (RBC) to the train, where an in-cab display allows the driver to control the train without reference to line-side signals. The radio is a compact unit designed for ease of installation with ETCS equipment from other suppliers. All of the main components within the data radio are fully duplicated to provide the necessary high availability the application requires.

The Nexus 19" Data Radio builds upon the SDR-200 ETCS on-board data radio by introducing a 19" rack solution that meets the EIRENE 8/16 specification. The Nexus 19" Data Radio provides an important link for the transmission of movement authorities from the Radio Block Center (RBC) to the train where an in-cab display allows the driver to control the train without reference to line-side signals. The radio is a compact unit designed for ease of installation with ETCS equipment from other suppliers. All of the main components within the data radio are fully duplicated to provide the necessary high availability the application requires.

Driver advisory systems support train drivers in achieving a consistent and economical driving style. Implemented as a software application, the system usually makes use of a train’s cab radio. Nexus hardware is used to provide 4G and GPS functionality, thereby facilitating real-time updates by interfacing with the Train Management System. Real-time updates of route data, timetables, and temporary speed restrictions will improve train punctuality and optimized line capacity

Using Nexus RCM on a fleet of trains is an innovative and inexpensive way to monitor rail networks. Every Nexus RCM system employs sensors to record the train's movements across three spatial axes. Aggregating this information across several runs provides accurate warnings and information on track defects such as voids.