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6 Calibration Config The tabular page, called Calibration Config, is designed to configure a VNA calibration. The result will be the switch and error terms of the VNA. There are two models of the VNA: Generic Model stores the switch terms in a N -port and the error terms are stored in a 2N -port for a N -port VNA. For a two port VNA, this calibration model is known as 7-term model. It supports the following calibration types: One Port, GSOLT, QSOLT, Unknown Thru, TRL (only 2-port), Juroshek, LHKM and Optimization. Switched Model stores the error terms in a 2N -port for each switch position for a N -port VNA. For a two port This model is used for the SOLT calibration. The following S-parameter matrix N -port VNA. D1 X1,2 X2,1 D2 .. . XN,1 XN,2 T,1 T,2 .. . describes the calibration error terms of a X1,N X2,N T1, T2, .. . DN TN, M1 M2 .. . T,N MN Dx denotes the directivity of port x. Xy,x denotes the crosstalk from port x to port y. Tx,x denotes the reflection tracking of port x. Ty,x denotes the transmission tracking from port x to port y where Ty,x = Ty, T,x . Mx denotes the match of port x and all other terms are additional crosstalk terms. On the tabular page, called Calibration Config, the following user controls are available, see Figure 29: New Config creates a new calibration configuration. New Config from Template loads a configuration template. Load Config loads an existing configuration from a file (*.calcfg). Save Config saves the configuration to a file (*.calcfg). Start Computation computes the VNA calibration and saves the VNA calibration to a file (*.calb). Cancel Computation cancels the computation. 39