Fernau Avionics has for many years been at the forefront in the design and manufacture of Distance Measuring Equipment (DME) with over 500 systems operational worldwide.
The 2020 DME meets the increasing demands for greater reliability, performance and control.

   State of the Art
 

 

The 2020 DME is a latest generation solid state system which either meets or exceeds the requirements of ICAO Annex 10. It can operate as a stand alone system or in conjunction with associated navaids such as MLS, ILS, CVOR, DVOR and NDB. The advanced features of the 2020 DME are brought about by the extensive use of programmable logic devices (PLDs).
     Reliability
   

Fernau has paid particular attention during the development of the 2020 DME to equipment reliability and maintenance aspects. The use of latest technology and more reliable components has set new standards in reliability and maintainability, with an MTBO in excess of 15,000 hours. The modern design will see the 2020 DME operational well into the 21st Century.
       Flexibility
 

  The 2020 DME is available in a variety of configurations including a single transponder with dual monitoring. Other alternatives are also available, such as transportable and mobile systems.
     Active Transmitter Control
    The 2010 has a powerful remote control facility that includes control of the output power, operating channel, operating mode and transponder ON/OFF etc. This allows a new dimension in tactical control of the entire 2010 TACAN network, which can now be performed from a central location, without the need for costly and time consuming site visits. System tuning and alignment can also be carried out from a remote terminal.
       Remote Maintenance and Monitoring (RMM)
 

  The 2020 DME has an integrated, powerful monitoring and maintenance system which is displayed on a local and/or remote PC. The RMM system has a number of display screens showing operating parameters, overall system status, LRU status, alarm limits, diagnostics and test, amplifier status, transmitter control status and many more. The history logging facility allows the maintenance engineer to judge the optimum time to effect the repair, before failure or shutdown occurs, whilst the LRU status screen indicates which module is faulty.
   

 Monitoring
    Each Monitor checks that the DME system performs in accordance with ICAO Annex 10. In addition to this, each Monitor is able to change certain system parameters to allow in depth analysis and testing of the DME from a remote location using the RMM system.
       Maintainability
 

  All modules are plug-in and accessed from the front of the DME cabinet. By using the RMM system for fault indication, a typical repair takes less then 15 minutes. All LRU's are keyed to prevent a module being inserted into the incorrect position. The BITE system continually monitors the DME and gives an alarm indication in the event of a module failure, system transfer, or shutdown. The 2020 DME allows for the “hot replacement” of modules which means that the equipment remains operational even while a module is being replaced.
     Remote Control
    Full control of the DME can be performed from a remote location either by the RMM PC or the Remote Control and Status Indicator. In addition to these control functions, the RMM system also provides for control of power, ident, presettable alarm limits, monitor test functions, routine tests and print outs.
       Upgradeability
     

The 2020 DME has a system architecture that allows future upgrade to DME with minimum system redundancy.
       Antenna
   

The 2020 DME operates with all standard omnidirectional, unidirectional and bidirectional antennas. Typically each antenna type will handle an input power in excess of 1000 Watts at standard DME pulse duty cycle and will operate over its entire frequency range with an input VSWR at 50½ of less than 2.0:1.

Furthermore, the 2020 DME does not require a non standard antenna with high gain. Therefore Fernau offer a standard solution with an 8dB gain omnidirectional antenna with dual coupler outputs for high integrity performance.

All antennas are lightweight, rugged, fully waterproof and come with a range of mounting adaptors to suit all sites. Obstacle lights and lightning rods are available as optional extras.

back to product menu