After performing User Calibration with the Open Short and Load+ my YBA250 scale shows only 27 dB instead of the expected 54 dB line near the bottom of the screen when the load is attached. Why?

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After performing User Calibration with the Open Short and Load+ my YBA250 scale shows only 27 dB instead of the expected 54 dB line near the bottom of the screen when the load is attached. Why?

Question: After performing User Calibration with the Open Short and Load+ my YBA250 scale shows only 27 dB instead of the expected 54 dB line near the bottom of the screen when the load is attached. Why?

Answer: The YBA250 Measurement is set to Cable Loss instead of Return Loss, which is why the indicated reading is one-half the expected answer. Set the YBA250 to Return Loss.