Choose the calibration from the measurement topology, waveguide band, available standards and whether the DUT is insertable. Record the kit and standard identities, dimensional or model definitions, line or offset values, temperature and certificate state. Mark the calibrated planes on the mechanical drawing and identify every adapter, taper, converter, cable and fixture that remains after calibration.
Verify the calibration with an independent through, line, offset, beadless airline or other suitable check rather than trusting the instrument status alone. Measure residual reflection and transmission, drift, leakage, dynamic range and disconnect/reconnect spread. Keep cable and frequency-converter movement representative of the DUT measurement, because a stable bench with a moving test head is not a stable reference plane.
For a non-insertable or directional device, define the two-calibration, adapter-removal or characterization method and propagate the covariance or uncertainty introduced by the adapter and connection. Preserve native complex data, standard definitions, raw verification results and corrected DUT data. Reject a report that supplies only a smoothed plot or uncertainty-free pass statement.