Method for testing surface acoustic wave sensor for measuring e.g. pressure, involves providing time between two successive emissions to be equal to or larger than duration corresponding to time taken by longest echo to reach testing unit

摘要

The method involves performing a series of basic tests. A radio frequency pulse is transmitted for charging a transducer of a delay line (20) with elastic waves. Response echoes emitted by the transducer are received and analyzed by a testing unit. Test is incremented relative to next test with an equivalent sampling rate. Time between two successive emissions is provided to be equal to or larger than a duration corresponding to time taken by a longest echo to reach the testing unit. A test time is incremented corresponding to the equivalent sampling rate. An independent claim is also included for a system for testing a passive sensor.