FIELD: automatics. SUBSTANCE: device has random pulse former 1, unit 2 for input of reply actions of operator, time labels generator 3, check program setting unit 4, threshold unit 5 for determination of non-distinguish of signal, indicator 6, control units 7 and 8, switch 9, pulse former 10, comparison unit 11, commutator 12 and registration unit 13. Invention allows to reduce time of checking due to interruption of test in time, i.e. if weal irritant is not distinguished, which has sound force to be higher than O dB. If reply is delayed for 3 seconds, time labels are not shown. EFFECT: improved precision of the device: improved objectiveness of inspection. 6 dwg
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Authors
Dates
1994-09-30—Published
1991-01-29—Filed