The uncertainty of the VSWR test equipment will affect actual measurement values.

Using required equipment suggested in Table: Required Equipment for MA24507A Power Master, follow the manufacturer’s S11 (input return loss) calibration procedure to perform calibration on the vector network analyzer. Connect the Power Master to the vector network analyzer test port and measure the Power Master input match. Typically, return loss are expressed in dB, which can be interconverted to Reflection Coefficient and VSWR as follows:

For the MA24507A, record the measured data into Table: MA24507A Reflection Coefficient Measurement Result under the Actual Measurement column. For the MA24510A, record the measured data into Table: MA24510A Reflection Coefficient Measurement Result under the Actual Measurement column. The Actual Measurement should be smaller than the Maximum Reflection Coefficient. The Maximum Reflection Coefficient is equal to the measurement system uncertainty added to the Power Master’s reflection coefficient specification. If the Actual Measurement reflection coefficient is larger than the Maximum Reflection Coefficient, then the Power Master may be defective. If the actual reflection coefficient is significantly larger than the maximum values recorded, then the Power Master is damaged and it is not necessary to perform further testing.