Keysight U5532C Sensor Module User’s Guide 15InstallationInstalling the Calibration FactorsInstalling the Calibration FactorsCal factors can be entered and stored in an internal table (Automatic CalFactors) in the PXA’s non-volatile memory. The table is automatically accessedduring RF power measurements (after the measuring receiver has tuned to thefrequency) to correct for the non-linear response of the power sensor. If noentry in the table directly corresponds to the frequency being measured, themeasuring receiver derives a cal factor through linear interpolation using thenearest calibration points in the table.Installing the Cal Factors in the N5531X (N9091EM0E)1. Connect the external storage device via USB that contains the U5532Ccalibration files to the PXA. The U5532C calibration files come on aCD-ROM allowing you to use an external USB CD-ROM drive to load thefiles onto the instrument.2. On the application, click Recall.You can copy calibration files for sensor modules onto the PXA's SSD to provide for easy accessof files. You can give each file a unique name based on the serial number of the sensor module.For example: U5532C_MY12345678.xml