VoltLog #10 - HP 3478A Line Voltage and Frequency Adjustment 110V 60Hz to 230V 50Hz

Описание к видео VoltLog #10 - HP 3478A Line Voltage and Frequency Adjustment 110V 60Hz to 230V 50Hz

In this video I am switching my HP 3478A from 120V 60Hz AC to 230V 50Hz AC using the internal selection. I am also comparing some voltage and resistance measurements to my Keithley 175 and I realize the HP needs calibration if I am to trust it’s measurements. While I was inside the meter I also checked the voltage of the internal battery used to store calibration data.

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