Patent ID: 8874397
Filing Date: 2014-10-28
Classification: G01R

Abstract:
1. A method for operating a computer in order to calibrate a signal transformation path that extends through a series of two or more interconnected modules, wherein an input to the signal transformation path resides in a first module of the series, wherein an output of the signal transformation path resides in a last module of the series, the method comprising: (a) a computer sending a first instruction to the first module, wherein the instruction directs the first module to couple a calibration signal produced by a calibration signal generator to the input of the signal transformation path, wherein the calibration signal generator is located within the first module; (b) the computer reading measurement values from a memory of the first module, wherein the measurement values include a measured value of the amplitude of the calibration signal and a measured value of the frequency of the calibration signal; (c) the computer reading output power measurements from a power measuring device, wherein the output power measurements are measurements of power of an output signal produced at the output of the signal transformation path in response to said calibration signal being coupled to the input of the signal transformation path; (d) the computer calculating a gain between the input and the output of the signal transformation path based on the measured value of the amplitude of the calibration signal and based on the output power measurements; and (e) the computer storing the gain in a memory of the computer.