T-Check Accuracy Test for Vector Network Analyzers utilizing a Tee-junction

The measurement accuracy of vector network analyzers can be tested simply, easily and quickly, with a simple DUT which consists of a common tee-junction with one port, terminated with a resistive load Z, and the T-Check program. The four S-parameters from ports 1 and 2 are measured with the vector network analyzer to be checked and then evaluated by means of the T-Check software.