Navy Calibration Program Instrument Calibration Procedure GN-08 COAXIAL DIRECTIONAL COUPLERS NARDA 3001-10, -20, -30 NARDA 3002-10, -20, -30

摘要

1.1 This procedure describes the calibration of the Narda series 3001 and 3002 Coaxial Directional Couplers, which operate in the frequency range from 460 Mc to 2000 lie with coupling values of 10, 20, or 30 db. The instrument being calibrated will be referred to as the Test Instrument and is calibrated as follows:n1.2 The accuracy of the test system is verified by measuring the attenuation of a standard calibrated attenuator.n1.3 Initially, the primary line VSWR is measured with a slotted line and a standing wave indicator.