SubscribeLetove prevadzkove sluzby Slovenskej republiky (LPS SR) is the air navigation services provider of the Slovak Republic.
The Challenge
It was commercialised on 1st January 2000 as the follow up to the Air Traffic Control Administration of the Slovak Republic.
With its headquarters at M.R. Stefanik Airport, Bratislava, LPS SR provides en-route services in the airspace of the Slovak Republic and approach and tower services at five airports around the country (Kosice, Piestany Poprad-Tatry Sliac, and Zilina)
The replacement of the existing time reference system was required to improve the quality of the time reference source to support time synchronisation of the systems for the provision of air navigation services.
The new system was to provide centralised control and monitoring of the time reference system, while utilising existing time displays at the controllers working positions.
The Solution
We supplied our highly versatile M211 Modular Timing System, which benefits from nine module slots as well as a suite of popular outputs. Hence we were able to easily accommodate variations at each user site and the customer's requirement for high reliability. 
GPS was selected as the synchronising source instead of the previously used DCF to overcome reception difficulties in some parts of the country.
In addition, a module was specially developed to address the requirement of utilising the old digital time displays so the customer no longer needed to run the old and the new timing systems in parallel.
Each M211 included an NTP module (Network Time Protocol) for complete computer synchronisation.
A Network Management software system was installed for the remote control and monitoring of all the sites from Bratislava.
In total eight complete timing systems were supplied plus two Network Monitoring systems.
Result
The GPS receiver modules have now totally eradicated the problem of poor reception, with zero error reports.
The time displays are working perfectly well as a result of the incorporation of the brand new module.
All computers across the entire WAN now display the same time, which is synchronised with the time reference system. This means that a computer in Kosice ATC displays exactly the same time as the wall mounted digital time display in Bratislava.
Since the installation of the Network Management System, all sites have been centrally monitored and configured from the Bratislava Main airport.
