Patent ID: 8049524
Filing Date: 2011-11-01
Classification: G01R,G05B

Abstract:
1. A method for detecting component defects of an analog signal processing circuit, especially for a measurement transmitter serving for signal conditioning of an analog measurement signal, which is fed, following conditioning, to a downstream digital unit for further signal processing, comprising the steps of: producing a test signal (TS) at a first test point (TP tapping at a signal output (SO) of the signal processing circuit (SPC), serving as a second test point (TP evaluating the response signal (RS) in a digital unit; determining an actual amplitude value (AA) of the response signal (AS) at at least two points in time; comparing actual amplitude values (AA) of the response signal (RS) with predetermined, desired amplitude values; and in case significant deviations are found in the comparison, issuing a defect report and/or an OK-report in the case of agreement.