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English to Russian translations [PRO] Tech/Engineering - Engineering (general) / дефектоскоп
English term or phrase:wraparound noise
Руководство по эксплуатации
Manual Pulse Repetition Frequency (PRF) Option
Pulse-repetition frequency (PRF) is a measure of how often the transducer is being pulsed by the electronic circuitry in the [instrument]. PRF is typically adjusted based on the test method or test piece geometry. For parts with long soundpaths, it is necessary to lower the PRF to avoid wrap-around interference that results in spurious signals on the display. For applications with rapid scanning, it is often necessary to use a high PRF rate in order to assure that small defects will be detected as the probe moves past the part. The base [instrument] controls the PRF automatically based on the Range setting selected by the operator. For most applications this automatic control is sufficient to prevent **wraparound noise** and/or other PRF related issues.