Field strength meters for TV, Cable and Satellite
CompactMax: DVB-S/S2 to Terrestrial TV transmodulators
Test and measurement
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The EWBS signal (Emergency Warning Broadcast System) is a system for warning and information that is implemented in analogue and digital broadcasting. In an emergency, devices compatible with this system automatically turn on and emit an audible warning. Then they show information in different formats, depending on the device.
September 1, 1985, NHK public broadcaster in Japan launched the EWBS system. The first real use was in 1987, to warn of tsunami. Since then it warned of natural disasters in more than 15 times. With this system the population has more time to take protective measures, avoiding the death of thousands. In 2000 the digital version of EWBS for digital satellite television (ISDB-S) was implemented and in 2003 for digital terrestrial television (ISDB-T).
The EWBS is enabled in the following cases:
In digital broadcasting, the EWBS signal is multiplexed into the transport stream of the ISDB-T/ S digital signal. The warning signal and emergency information descriptor (area code, time, etc) is in the Program Map Table.
The signal transmitted by modulators and transmitters can be detected by RANGER Neo field strength meters. This feature is useful for operators and maintenance staff in order to check that signal is sent and received.
RANGER Neo versions support ISDB-T / Tb standard.
Available depending on the model. Check comparison table.