Understand Accuracy and Resolution

To maximize accuracy, the Volt Meter incorporates a programmable gain amplifier (PGA). This amplifier automatically opens and closes depending on the input voltage. The PGA has 16 different ranges as shown in the table below. 

As an example, with a 110V input, the APM will be on range 12 and the resolution will be 81.6mV. The worst case error will be 1.6V. 

volt meter PGA ranges

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