Record the calibration method, connector type and sex, usable frequency range, kit model, physical standard classes, serial numbers and the exact kit-definition or coefficient-file revision loaded by the instrument. The electrical model must correspond to the physical open, short, load, through, line, reflect or electronic module actually connected.
Retain the calibration certificate, calibration date, stated uncertainty, environmental conditions and any connector inspection or gauge record. A certificate establishes part of the standards history; it does not prove that the operator used the right definition, protected the connectors or established the intended reference plane.
Metrological traceability belongs to the measurement result through a documented unbroken calibration chain with uncertainty contributions at each step. Link the result to the kit, instrument, cable path, fixture revision, procedure, check standard and native data so another reviewer can reconstruct how the result was obtained.