IEC 62037-3-2021 Passive RF and microwave devices, intermodulation level measurement – Part 3: Measurement of passive intermodulation in coaxial connectors. This part of IEC 62037 defines the impact test on coaxial connectors to evaluate their robustness against weak connections and particles inside the connector, as independently as possible from the effects of cable PIM (passive intermodulation). For other connectors (e.g. panel mounted connectors), the cable can be replaced by an adequate transmission-line (e.g. airline, stripline). In order to evaluate the effects of mechanical stresses on the connectors, a series of impacts is applied to the connectors while measuring the PIM. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 62037-1 , Passive RF and microwave devices, intermodulation level measurement – Part 1: General requirements and measuring methods IEC 62037-4, Passive RF. and microwave devices, intermodulation level measurement – Part 4: Measurement of passive intermodulation in coaxial cables 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 3.2 Abbreviated terms DUT Device under test IM Intermodulation PIM Passive intermodulation 4 Test method 4.1 Samples for testing One of the two following set-ups may be used. NOTE Correct assembly methods and techniques are critical to the proper operation of the connector on the cable. a) Set-up 1 – Multi-port DUT In order to minimize the effect of the transmission line, a short assembly should be tested. Identical connectors should be assembled at each end. An assembly, as short as physically practical, should be constructed. b) Set-up 2 – One-port DUT A single connector can be assembled on a length of transmission line for which it is designed that exhibits at least 1 0 dB of attenuation in one direction at the lowest frequency in the receive band. 4.2 Connection of unit The unit shall be connected as described in IEC 62307-1 . 4.3 Set-up 1 – Fixed frequency test considerations Due to the phase interaction of the connectors and the length of...
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