Patent ID: 9733298
Date: 2017-08-15
CPC Classifications: G01D,G01R

Claim:
1. A method for testing an electronic appliance for registering at least one variable of a system, wherein the electronic appliance is designed in the form of a sensor, with the steps: (a) Defining an expected minimum and/or maximum value of the variable; (b) Registering the variable of the system and producing an electric signal by means of the electronic appliance depending on the registered variable; (c) Detecting at least one value of a parameter of the produced electric signal; (d) Defining an expected minimum and/or maximum value of the parameter depending on the defined minimum and/or maximum value of the variable of the system; (e) Testing, whether the detected value of the parameter is greater than the minimum value defined for the parameter and/or smaller than the maximum value; (f) Determining on the basis of the result from step e), whether there is a malfunction of the electronic appliance provoked by an external electromagnetic interference field, the steps (a) to (e) are performed for a first variable of the system; and depending on the result for the first variable the steps (a) to (f) are performed for a second variable of the system and a second parameter, wherein the second variable is different from the first variable and according to step (d) a minimum and/or maximum value of the second parameter is determined depending on the defined minimum and/or maximum value of the second variable; and the steps (a) to (f) are performed for the second variable only if a first parameter of the first variable is smaller than the minimum value or greater than the maximum value.