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Input impedance verification test.

A project log for Multimeter +

Dual input 24 bit Multimeter with USB interface, single channel 10 bit USB oscilloscope, PWM out, 2 Ch Data-logger, R, C, Digital sniffer.

romanRoman 02/15/2016 at 18:050 Comments

Just tested to verify the input impedance and it shows to be 10 Mega Ohm. Apparently the input low pass filter drops it from 20 Meg down to just a little over 10 Meg (2% above 10 Meg). Need to improve it. The goal is toget higher impedance, significantly above 10 Meg. My Fun continues.

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