false alarm


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false alarm

[¦fȯls ə′lärm]
(electronics)
In radar, an indication of a detected target even though one does not exist, due to noise or interference levels exceeding the set threshold of detection.
References in periodicals archive ?
Instead, his first message after the false alarm was a boilerplate complaint about "fake news.
Overall, the number of false alarms was down from 213 times in 2015/16, and is the lowest number of false alarms recorded since 51 in 2005/06.
Officer Lowether said: "Essentially false alarms waste the organisation's time, firefighters' time and could cost lives.
This can require the manufacturer's assistance, but takes only a few minutes and is well worth the cost of ongoing false alarms," says Blackburn.
This article discusses the most important of these challenges along with the problems associated with dust, the avoidance of false alarms, fire detection installations for clean rooms, the desirability of future proofing in fire alarm systems and the selection of suppliers for fire alarm systems.
Bosses are also reducing the number of crew that attend callsouts they believe may be false alarms.
LIVES could be put at risk every day as firefighters waste hours responding to false alarms in public buildings and businesses.
As the Moscow News later reported, Petrov then made his historic decision and called his Kremlin liaison to report it was a false alarm.
Created by the Security Industry Alarm Coalition (SIAC) and False Alarm Reduction Association (FARA), the award is designed to raise industry awareness regarding false alarms.
Firefighters were called to the Dow Corning chemical plant, in Cardiff Road, Barry, just after 5pm yesterday but the emergency was called off just after 6pm when it was found to be a false alarm.
Columbus, have developed the Multi-Parameter, MicroSensor-Based Low False Alarm Fire Detection System (MMFDS).
Martin says this has resulted in a 50% decrease in false alarm dispatches over a six-month period.