Abstract:We report the results of a bilateral comparison of attenuation measurements between the National Physical Laboratory (NPLI, New Delhi) and the Standards and Calibration Laboratory (SCL, Hong Kong), carried out under the Asia-Pacific Metrology Programme. Commercial 50 coaxial attenuators (in APC-7 connectors), of nominal attenuation values 3 dB, 10 dB and 20 dB, were calibrated at 30 MHz, 5 GHz and 10 GHz against the 30 MHz standard WBCO attenuators of both laboratories. A direct 30 MHz series-substitution tech… Show more
“…The details of the experimental setup and calibration procedure are described elsewhere. 11,12 The calibration results showing error in each 10 dB step of the piston attenuator are given in Fig. 7.…”
“…The details of the experimental setup and calibration procedure are described elsewhere. 11,12 The calibration results showing error in each 10 dB step of the piston attenuator are given in Fig. 7.…”
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