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How do I configure Moku for 100:1 High Voltage probes

Can Moku:Lab be used with 100:1 probes ?

Written by Paul Cracknell

Updated at July 4th, 2024

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100:1 probes are commonly used to measure higher voltages. Such probes have a 100 MΩ impedance and thus divide the measured voltage by a factor of 100  when used with the 1 MΩ input impedance option on Moku devices.

The Moku Oscilloscope incorporates a probe scale factor to display the measured signal with the correct scale; tap on the 'Probe' scaling factor and enter "100x".  This will then correctly scale the measured voltage.  

Below we see the Oscilloscope instrument on Moku:Lab measuring US main voltage of 120 Vrms at 60 Hz despite having an input voltage range of ±5V.



moku:lab high voltage oscilloscope probes input voltage

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