Double-coaxial method

Illustrated explanation

Triaxial and double-coaxial fixtures measure defined coupling

2Double-coaxial method
Triaxial and double-coaxial fixtures measure defined couplingCallout 1: Triaxial arrangement. Callout 2: Double-coaxial arrangement. Concentric conducting regions create controlled excitation and measurement paths. The triaxial specimen and the bulkhead feed-through or gasket specimen use different fixture arrangements. Current term: Double-coaxial method, callout 2. 1Concentric excitation + measurementTriaxial arrangement 2Bulkhead specimen interfaceDouble-coaxial arrangement
  1. Triaxial test

    A three-conductor arrangement supports the specified screen measurement. Identify the exact IEC method, specimen and measured quantity.

  2. Double-coaxial methodThis term

    The coupled coaxial regions assess the defined feed-through or gasket interface. A specimen result does not qualify a different complete enclosure.

Concentric conducting regions create controlled excitation and measurement paths. The triaxial specimen and the bulkhead feed-through or gasket specimen use different fixture arrangements.

Topology sketches, not dimensioned test fixtures or standard circuit reproductions. Method-specific terminations, calibration, specimen length and frequency limits remain essential.

ReferencesIEC 62153-4-3 — Surface transfer impedance — Triaxial methodIEC 62153-4-15 — Triaxial-cell screening measurementsIEC 62153-4-10 — Feed-throughs and electromagnetic gaskets — Double-coaxial method