Electronics Weekly
CMW500
The ERA-GLONASS system works much like the European Union’s eCall system. When an accident occurs, the system in the vehicle connects with a public safety answering point via the local wireless communications network and transmits a specified set of data about the vehicle and its situation.
A feature of the ERA-GLONASS system is that if no voice connection can be made or if data cannot be transferred via the voice channel, the data is sent via SMS.
The system is also certified for 2G and WCDMA networks.
Rohde & Schwarz is supporting the deployment ERA-GLONASS with a test setup that allows manufacturers and suppliers of automatic in-vehicle systems (IVS) to perform reliable and reproducible pre-conformance tests on their ERA GLONASS modules in the lab.
Rohde & Schwarz has developed application software, called CMW-KA095, to meet ERA GLONASS requirements in line with Russia’s GOST specification.
Based on the firm’s CMW-KA094 eCall software, the software simulates a data connection and controls CMW500 wideband radio communication tester which emulates a wireless communications network in the lab.
The software also controls the GNSS simulator that supplies the coordinates required for vehicle localisation.
The ERA GLONASS SMS protocol has also been integrated into the test solution, making it possible to test the SMS functionality of the IVS modem when no voice connection is available.
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