| 摘要 |
<p>The method involves measuring the incoming noise level in each receiver at intervals, comparing with a stored level (PZ,PT1-T4), measuring the incoming signal level (PST) from the central station and/or at least one intermediate station at different, multiple intervals, storing as a comparison value, generating an error signal (SF) in a subscriber if a comparison signal level is not significantly greater than the measured level and sending a noise warning (STM) to the central station if this lasts longer than a minimum time. An independent claim is also included for the following: (a) a device for functional monitoring of radio transmission paths in a hazard warning system.</p> |
